SERVICE MANUAL REVISION 1 MAR. 1997 FY8-13EL-010 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV.1 MAR.
IMPORTANT THIS DOCUMENTATION IS PUBLISHED BY CANON INC., JAPAN, TO SERVE AS A SOURCE OF REFERENCE FOR WORK IN THE FIELD. SPECIFICATIONS AND OTHER INFORMATION CONTAINED HEREIN MAY VARY SLIGHTLY FROM ACTUAL MACHINE VALUES OR THOSE FOUND IN ADVERTISING AND OTHER PRINTED MATTER. ANY QUESTIONS REGARDING INFORMATION CONTAINED HEREIN SHOULD BE DIRECTED TO THE COPIER SERVICE DEPARTMENT OF THE SALES COMPANY.
INTRODUCTION This Service Manual provides basic facts and figures needed to service the plain paper copier NP6045 in the field. The NP6045 is designed to enable automated copying work and may be configured with the following system components: 1. Stapler Sorter-E2, Stapler Sorter-G1, Sorter-E1, Sorter-G1 2. RDF-H1 For descriptions on the system components, see their respective service manuals.
The following rules apply throughout this Service Manual: 1. Each chapter contains sections explaining the purpose of specific functions and the relationship between electrical and mechanical systems with reference to the timing of operation. In the diagrams, represents the path of mechanical drive—where a signal name accompanies the symbol , the arrow indicates the direction of the electric signal.
System Configuration Stapler Sorter-E2 In addition to the functions of a 20-bin sorter, automatically staples sorted copies. Further, it swings out copies to the front for removal, and is equipped with a multiple stacking function, in which two or more sets of copies may be delivered to a single bin. RDF-H1 Feeds originals one by one from a stack to the copyboard for copying. Stapler Sorter-G1 In addition to the functions of a 20-bin sorter, automatically staples sorted copies.
blank page iv
CONTENTS CHAPTER 1 GENERAL DESCRIPTION I. II. III. FEATURES.........................................1-1 SPECIFICATIONS ..............................1-2 1. Type..........................................1-2 2. System .....................................1-2 3. Performance .............................1-3 4. Others.......................................1-6 NAMES OF PARTS ............................1-9 A. External View.................................1-9 B. Cross Section ................................
6. Adjusting the Position of the Scanner ....................................3-24 B. Lens Drive Assembly.....................3-25 1. Removing the Lens Y Direction Drive Motor...............................3-25 2. Removing the Lens Stage Temporarily ...............................3-27 3. Installing the Light-Blocking Belt ...........................................3-28 4. Removing the Lens X Direction Drive Motor...............................3-29 5. Attaching the Lens X Direction Drive Belt................
E. F. G. H. I. J. 1. Removing the Blank Exposure Lamp Assembly........................4-41 Photosensitive Drum .....................4-42 1. Removing the Drum Unit..........4-42 2. Replacing the Drum Heater......4-44 3. Installing the Photosensitive Drum.........................................4-44 Potential Sensor Assembly ...........4-44 1. Removing the Potential Sensor Assembly .....................4-44 Primary Charging Assembly..........4-45 1. Removing the Primary Charging Assembly ...............
A. Two-Sided/Overlay Copy Operation.......................................5-20 1. Sequence of Operations for Making Two-Sided/Overlay Copies (1st side) ......................5-21 B. Making Two-Sided Copies (2nd side) ......................................5-22 1. Sequence of Operations for Making Two-Sided Copies (2nd side) .................................5-23 C. Making Overlay Copies (2nd side) ......................................5-24 1. Outline ......................................5-24 2.
D. E. F. G. 7. Orientation of the Feeding Roller of the Cassette/Deck Pick-Up Assembly ....................5-76 8. Position of the Pick-Up Roller Releasing Solenoid of the Deck .........................................5-77 9. Position of the Pick-Up Roller Releasing Solenoid for the Cassette ...................................5-77 10.Adjusting Registration for the Cassette ...................................5-77 Pick-Up Vertical Path Roller Assembly .......................................5-78 1.
5. Removing the Upper Fixing Unit ...........................................6-20 6. Removing the Fixing Heater.....6-22 7. Installing the Fixing Heater.......6-24 8. Removing the Upper Fixing Roller ........................................6-24 9. Installing the Upper Fixing Roller ........................................6-26 10.Removing the Thermal Switch .6-27 11. Removing the Main Thermistor (TH1) ........................................6-27 12.Removing the Lower Separation Claw Assembly ......6-28 13.
J. Pick-Up Drive Assembly................7-39 1. Construction .............................7-39 2. Removing the Pick-Up Drive Assembly ..................................7-39 K. Duplexing Unit Drive 1 Assembly..7-40 1. Construction .............................7-40 2. Removing the Duplexing Unit Drive 1 Assembly .....................7-40 L. Lifter Drive Assembly ....................7-41 1. Construction .............................7-41 2. Removing the Lifter Assembly .7-42 M.
5. Adjusting the Left/Right Margin ....................................10-8 6. AE Auto Adjustment ...............10-8 7. Adjusting the AE Slope ..........10-9 B. Exposure System ........................10-10 1. Adjusting the Scanner Home Position...................................10-10 2. Routing the Scanner Drive Cable ......................................10-11 3. Adjusting the Tension of the Scanner Cable .......................10-12 4. Adjusting the Mirror Position ..10-12 5. Cleaning the Mirror (No.
IV. 5. Checking the Developing Assembly................................10-55 6. Checking the Paper................10-55 7. Checking the Periodically Replaced Parts.......................10-55 8. Others.....................................10-55 B. Image Fault Samples ..................10-58 C. Troubleshooting Image Faults.....10-59 1. The copy is too light. (halftone area only) ................10-59 2. The copy is too light. (solid black also) ..............................10-60 3. The copy is too light.
V. VI. 49.The Control Card Set indicator fails to turn OFF. ......10-104 50.Paper jams at the fixing assembly inlet. .......................10-104 51.The Add Paper indicator fails to turn OFF. ............................10-104 52.The fixing heater fails to turn ON. .........................................10-105 TROUBLESHOOTING FEEDING PROBLEMS......................................10-106 A. Copy Paper Jams........................10-106 1. Pick-up assembly ...................10-107 2.
CHAPTER 1 GENERAL DESCRIPTION This chapter introduces the copier's features and specifications, shows how to operate the copier, and explains how copies are made. I. II. III. IV. FEATURES.........................................1-1 SPECIFICATIONS ..............................1-2 NAMES OF PARTS ............................1-9 A. External View.................................1-9 B. Cross Section ................................1-11 OPERATIONS ....................................
blank page
CHAPTER 1 GENERAL DESCRIPTION I. FEATURES 1. The NP6045 is capable of making as many as 45 copies (A4, horizontal) every minute. 2. It uses newly designed pick-up and feeding mechanisms so that it not only helps save space, but it also is less susceptible to jams. 3. It provides high durability and high image quality required of high-speed copying.
CHAPTER 1 GENERAL DESCRIPTION II. SPECIFICATIONS 1. Type Body Console Copyboard Fixed Light source Halogen lamp (70 V, 265 W) Lens Zoom lens Photosensitive medium Amorphous silicon (ø80) 2. System Body Front deck paper deck type Copying Indirect electrostatographic Charging Corona Exposure Slit (moving light source) Copy density adjustment Automatic or manual Development Dry (toner projection) Pick-up Automatic 2 front cassettes 1 front paper deck Manual Multifeeder (5.
CHAPTER 1 GENERAL DESCRIPTION 3. Performance Original type Sheet, book, 3-D object (2 kg max.) Maximum original size A3/11" × 17" Copying ratios Direct 1:1 Reduce I 1:0.500 Reduce II 1:0.707 Reduce III 1:0.816 Reduce IV 1:0.865 Enlarge I 1:2.000 Enlarge II 1:1.414 Enlarge III 1:1.224 Enlarge IV 1:1.154 Zoom 1:0.490 to 2.040 (1% increments) Wait time 5 min or less (at 20°C room temperature) First copy 3.
CHAPTER 1 GENERAL DESCRIPTION Cassette Paper deck Automatic Copy paper type • Plain Paper (64 to 90 g/m2) A4, B5, LTR • Colored Paper (Canon-recommended) A4 • Plain Paper (64 to 90 g/m2) A3, B4, A4, B5, A4, B5R, 11" × 17", LGL, LTR, LTR-R, STMT-R*, postcard • Tracing Paper (SM-1)* A3, B4, A4, B5, A4R, B5R • Transparency* (Canon-recommended) A4, LTR • Colored Paper* (Canon-recommended) B4, A4 • Label Sheet (Canon-recommended) A4, LTR • Thick Paper* (91 to 200 g/m2) Automatic • Plain Paper* (64 to 90 g/
CHAPTER 1 GENERAL DESCRIPTION Tray Non-image width Claw None Cassette 55 mm deep (500 sheets each of 80 g/m2 paper) Paper deck 162 mm deep (about 1500 sheets each of 80 g/m2 paper) Copy tray 250 sheets (approx.; A3, 80 g/m2) Leading edge 4.5±1.5 mm in Direct (4.5±1.5 mm in non-Direct, Overlay, Two-sided) Trailing edge 2.0 ±1.0 mm (2.0 ±1.0 mm in non-Direct, Overlay, Two-sided) Left/right (1st side) A4 horizontal, B5 horizontal, B4, A3, LTR horizontal 2.75±2.
CHAPTER 1 GENERAL DESCRIPTION 4. Others Front paper deck Operating environment Power supply Power consumption Noise Temperature 7.5° to 32.5°C/45.5° to 90.5°F Humidity 5 to 80% RH Atmospheric pressure 810.6hPa to 1013.3hPa (0.8 to 1.0 atm) 120 V 220/240 220/240 220/240 220/240 220/240 220/240 220/240 NGQ XXXXX FGB XXXXX DGB XXXXX BGB XXXXX AGB XXXXX UBW XXXXX, CGB XXXXX RBJ XXXXX PCL XXXXX, EGB XXXXX V(ITA) V(UK) V(FRN) V(GER) V(AMS) V(CA) V Maximum 1.5 kW or less Standby 0.
CHAPTER 1 GENERAL DESCRIPTION Size Copy size Copies/min A3(297 × 420mm) A3 24 A4(210 × 297mm) A4 45 B4(257 × 364mm) B4 30 B5(182 × 257mm) B5 45 A4R(297 × 210mm) A4R 35 B5R(257 × 182mm) B5R 39 A3 → 5R A5R 44 A3 → 4R A4R 35 B4 → B5R B5R 39 A4 → A5 A5 45 III (81%) B4 → A4R A4R 35 IV (86%) A3 → B4 B4 30 A4 → B5 B5 45 I (200%) A5R → A3 A3 23 A4R → A3 A3 24 B5R → B4 B4 29 A5 → A4 A4 45 III (122%) A4R → B4 B4 30 IV (115%) B4 → A3 A3 24 B5 → A4 A4
CHAPTER 1 GENERAL DESCRIPTION Size Copy paper size Copies/min LTR LTR 45 11” × 17” 11” × 17” 24 LGL LGL 30 LTRR LTRR 37 STMT/STMTR STMT/STMTR 45 I (50%) 11” × 17” → STMTR STMTR 43 II (64.7%) 11” × 17” → LTRR LTRR 37 III (73.3%) 11” × 15” → LTRR LTRR 30 I (200%) STMR → 11” × 17” 11” × 17” 24 II (129.4%) LTRR → 11” × 17” 11” × 17” 24 III (121.
CHAPTER 1 GENERAL DESCRIPTION III. NAMES OF PARTS A. External View w q !2 q w e r t y !1 e !0 Copy tray RDF Toner supply mouth Power switch Original tray/manual holder Multifeeder r t y i u o u i o !0 !1 !2 Upper right door Lower right door Paper deck Cassette 3 Cassette 4 Front door Figure 1-301 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 1 GENERAL DESCRIPTION @1 @8 @2 @4 @3 @6 @7 @1 Fixing/feeding assembly @2 Fixing assembly knob @3 Fixing/feeding assembly releasing lever @4 Toner hopper @5 @5 @6 @7 @8 Holding Holding Holding Holding tray tray tray tray feeding knob feeding assembly assembly knob Figure 1-302 1-10 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 1 GENERAL DESCRIPTION B. Cross Section 1. Cross Section of the Body q wer t @9 q No. 3 mirror w No. 2 mirror e Heat absorption glass r Scanning lamp t No. 1 mirror y Fixing assembly u Copyboard glass i Fixing cleaner belt o Lens !0 Drum cleaning assembly !1 Pre-exposure lamp y @8 u @7 i @6 o !0 !1 !2 !3 @5 @4 @3 !2 Primary charging assembly !3 Potential sensor !4 No. 6 mirror !5 Blank exposure lamp !6 Developing cylinder !7 No. 4 mirror !8 No.
CHAPTER 1 GENERAL DESCRIPTION IV. OPERATIONS A. Control Panel q w e r t y u i o !0 !1 !2 !3 !4 Touch panel display Guide key Reset key Keypad Display Contrast key Energy Saver key Stop key Toner supply mouth Pilot lamp Copy Start key Clear key Interrupt key User Mode key Preferences key we r q i t yu RESET STOP 1 2 3 ? 4 5 6 7 8 9 10 0 C START !1 !3 !2 C !0 o Figure 1-401 Ready to copy.
CHAPTER 1 GENERAL DESCRIPTION B. Special Features Mode Description Mode Auto Start Use it while the copier is in wait state so that it will start copying operation as soon as it becomes ready. Pre-Heat Use it to turn off all indications on the control panel including the Power indicator but excluding the Pre-Heat indicator. Bind Margin Use it to select right binding, left binding, top binding, or bottom binding. Erase Frame Use it to erase frame images of the original, sheet, holes, or book.
CHAPTER 1 GENERAL DESCRIPTION C. User Mode 1. Types of User Modes The copier offers the following four user modes, in which the user may freely select specific settings. 1. Specifications 2. Adjustment/cleaning 3. Timer 4. Preferences function 1. Specifications Item (on display) Description Remarks auto sort ON/OFF Use it to select or deselect automatic sorting when using the RDF and making copies of multiple originals (copy count 2 or higher).
CHAPTER 1 GENERAL DESCRIPTION Item (on display) Description Remarks inch input ON/OFF Use it to specify whether inch input should be enabled when in hole image erasing or zoom program size specification mode. ON: Enables inch input. OFF: Disables inch input. Factory setting: OFF Ref.: ON if US model copy wait time display ON/OFF Use it to specify whether the copy time should be displayed during copying. ON: Display. ON: Do not display.
CHAPTER 1 GENERAL DESCRIPTION 2. Adjustment/Cleaning Item (on display) Description wire cleaning Use it so that the primary charging wire, pretransfer charging wire, and transfer/separation charging wire may be cleaned automatically. feeder cleaning Place ten sheets of blank paper on the feeder tray, and press the OK key. The blank sheets will be fed in 'one-sided to onesided' copying mode, thereby cleaning the separation belt and feeding roller.
CHAPTER 1 GENERAL DESCRIPTION 4. Preferences Item (on display) user customized key Description Use it to set mode setting keys of preferences on the standard screen. Remarks Maximum: 2 keys Table 1-405 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 1 GENERAL DESCRIPTION V. ROUTINE WORK BY THE USER Instruct the user to clean the following once a week without fail. 1) Copyboard Glass Wipe it with a moist cloth, and dry wipe it. 2) RDF Feeding Belt Wipe it with a cloth moistened with a solution of mild detergent, and dry wipe it. 1-18 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 1 GENERAL DESCRIPTION VI. IMAGE FORMATION A. Outline Copyboard glass Scanning lamp Lens Primary charging assembly Pre-exposure LED Blank exposure LED Cleaning assembly Developing assembly Fixing assembly Roller electrode Pre-transfer charging assembly Pick-up (multifeeder) Separation claw Separation charging assembly Transfer charging assembly Pick-up (cassette) Figure 1-701 The copier uses an electrostatographic method to produce images and is constructed as shown in Figure 1-701.
BLANK PAGE 1-20
CHAPTER 2 BASIC OPERATION This chapter provides outlines of the copier's various operational workings. (Note that a single rotation of the drum takes about 0.79 sec.) I. BASIC OPERATIONS ........................2-1 A. Functional Construction.................2-1 B. Outline of the Electric Circuitry......2-2 C. Basic Sequence of Operations......2-4 D. Main Motor (M1) Control Circuit ....2-11 COPYRIGHT © 1997 CANON INC. E. Inputs to the DC Controller............2-13 F. Outputs from the DC Controller ...
BLANK PAGE
CHAPTER 2 BASIC OPERATION I. BASIC OPERATIONS A. Functional Construction The copier can be roughly divided into four functional blocks: namely, pick-up/feeding system, exposure system, image formation system, and control system.
CHAPTER 2 BASIC OPERATION B. Outline of the Electric Circuitry The copier’s major electrical mechanisms are controlled by the microprocessor on the DC controller PCB. • Copy sequence • High-voltage • Fixing temperature • Scanner drive • Pick-up/feeding • Lens motor (X, Y) • Blank exposure LEDs • Analog signal input Thermistor signal Potential sensor signal Room temperature signal Manual size signal The control panel is equipped with its own CPU (Q937) which controls its keys, LEDs, and LCD.
CHAPTER 2 BASIC OPERATION Control system Sensors Loads DC controller PCB Sensors/ switches Q156 (CPU) Motor driver PCB Main motor Scanner motor AC driver PCB Heaters Control panel (CPU) Potential measurement circuit Potential sensor Q160 Q161 Solenoids Clutches (ROM) Lens motor Q136 Q137 Q138 Q162 LED HVT Charging assemblies Developing cylinder Roller electrode Lamp regulator Scanning lamp (RAM) Q158 (IPC) Fans Holding tray driver PCB Holding tray unit RDF controller PCB Sensors/ s
CHAPTER 2 BASIC OPERATION C. Basic Sequence of Operations 1. Basic Sequence of Operations at Power-On (1/2) The following sequence applies when the surface temperature of the fixing roller is 75°C at power-on and, in addition, the ambient temperature is 17°C or more.
CHAPTER 2 BASIC OPERATION 2. Basic Sequence of Operations at Power-On (2/2) The following sequence applies when the surface temperature of the fixing roller is 75°C at power-on and, in addition, the ambient temperature is 17°C or more.
CHAPTER 2 BASIC OPERATION Function Period WMUP (warm up) From when the power switch is turned ON until the surface temperature of the fixing assembly upper roller reaches 195°C. • Waits until the fixing assembly warms. INTR (initial rotation) From the end of WMUP until CNTGR1 starts after the surface temperature of the fixing assembly upper roller has reached 195°C. • Evens out the surface temperature of the fixing assembly roller. • Discharges copy paper, if any.
CHAPTER 2 BASIC OPERATION 3.
CHAPTER 2 BASIC OPERATION Period Function Remarks INTR (initial rotation) From when the Copy Start key is pressed until CNTR1 starts. Stabilizes the sensitivity of the drum in preparation for copying. • Moves the lens. If the lens does not reach a specific position within a specific period of time, INTR is continued until the lens reaches the position. CNTR1 (control rotation 1) For about 5 sec after the end of INTR. Controls the drum surface potential VD.
CHAPTER 2 BASIC OPERATION 4. Basic Sequence of Operations for Page Separation In page separation mode, the original on the left side of the copyboard is copied (CSFW1) and then the original on the right side of the copyboard is copied (SCFW2). If the copy count is set to ‘2’ or higher, the original on the left is copied for as many copies as specified; then, the original on the right is copied as specified.
CHAPTER 2 BASIC OPERATION Period SCFW1 (scanner forward 1; copying original on left) SCRV1 (scanner reverse 1) SCSW2 (scanner forward 2; copying original on the right) SCRV (scanner reverse 2) Function Remarks While the scanner is moving forward. • The distance over which the scanner moves forward varies according to the copy paper size and the reproduction ratio.
CHAPTER 2 BASIC OPERATION D. Main Motor (M1) Control Circuit 1. Outline Figure 2-107 is a block diagram showing the main motor control circuit, which has the following functions: q Turning on and off the main motor. w Controlling the main motor to a specific speed. The main motor is a DC motor equipped with a built-in clock pulse generator. When the motor rotates, the clock pulse generator generates clock pulses (MMCLK) according to the revolution of the motor.
CHAPTER 2 BASIC OPERATION b. Controlling the Main Motor to a Specific Speed The copier’s main motor is controlled so that it rotates at a specific speed. The reference signal generator circuit on the motor control PCB generates reference pulses, which are sent to the phase comparator circuit and the frequency comparator circuit.
CHAPTER 2 BASIC OPERATION E. Inputs to the DC Controller Inputs to the DC Controller (1/8) DC controller PCB +5V Scanner home position sensor PS1 J728-1 J727-3 J111A-1 -2 -2 -2 -3 -1 -3 J729-1 J727-6 J111A-4 -2 -5 -5 -3 -4 -6 J776-1 J775-5 J112A-5 -2 -4 -4 -3 -3 -3 When the scanner is at home position, SCHP ’1’. (The light-blocking plate is at PS1.) +5V Scanner original leading edge 1 sensor PS3 When the scanning lamp is at image leading edge 1, SCDP1 ’1’.
CHAPTER 2 BASIC OPERATION Inputs to the DC Controller (2/8) DC controller PCB +5V External delivery sensor PS10 J2747-1 J2755-32 J108B-8 -2 -33 -7 -3 -34 -6 J742 Fixing cleaning belt length sensor PS11 When PS10 detects copy paper, EXDPD ’1’. (The light-blocking plate is at PS10.) +5V J2757 J2755 J2743-1 -3 -5 -14 J108A-14 -2 -2 -4 -13 -13 -3 -1 -3 -12 -12 CBOP When the fixing cleaning belt is shorter than a specific length,’1’. (The light-blocking plate is at PS11.
CHAPTER 2 BASIC OPERATION Inputs to the DC Controller (3/8) DC controller PCB J2081 Holding tray Y home position sensor PS20 J202A J752-1 -3 J208-3 -2 -2 -2 -3 -1 -1 J113A -5 -10 HTYHP When the side guide is at PS20. ’1’. (The side guide plates are on both sides.) HTXHP When the rear partition plate is at PS21. ’1’. (The partition plate is at the rear.
CHAPTER 2 BASIC OPERATION Inputs to the DC Controller (4/8) DC controller PCB +5V Pick-up vertical path 4 sensor PS30 J818-1 J816-5 J130B-5 -2 -4 -4 -3 -3 -3 J795-1 J793-5 J116A-5 -2 -4 -4 -3 -3 -3 J796-1 -8 J116A-8 -2 -7 -7 -3 -6 -6 PS30D When PS30 detects copy paper, ’1’. (The light-blocking plate is at PS30.) +5V Deck lifter position sensor PS31 RDLTP When PS31 detects the lifter, ’1’. (The light-blocking plate at PS31.
CHAPTER 2 BASIC OPERATION Inputs to the DC Controller (5/8) DC controller PCB +5V Upper right door sensor PS41 J839-1 J838-5 J119B-5 -2 -4 -4 -3 -3 -3 J840-1 -8 J119B-8 -2 -7 -7 -3 -6 -6 J725-1 J7252-1 J105A-10 -2 -2 -9 -3 -3 -8 J2748-1 J2755-35 J108B-5 When the right door (upper) is open, RUPDOP* ’0’. (The light-blocking plate is at PS41.) +5V Lower right door sensor PS42 When the right door (lower) is open, RLWDOP* ’0’. (The light-blocking plate is at PS42.
CHAPTER 2 BASIC OPERATION Inputs to the DC Controller (6/8) DC controller PCB SW2 J714-2 J104A-4 -1 -3 Front door switch FDOD When the front door is open,’1’. +5V Original size detection 1 DS1 J745-3 J738-6 J110B-6 -2 -5 -5 -1 -4 -4 DSZ1 Varies according to the size of the original. +5V Original size detection 2 DS2 J746-3 J738-9 J110B-9 -2 -8 -8 -1 -7 -7 J747-4 J738-13 J110B-13 DSZ2 Varies according to the size of the original.
CHAPTER 2 BASIC OPERATION Inputs to the DC Controller (7/8) DC controller PCB +5V Multifeeder paper width detection SVR1 J792-1 J789-3 J115B-3 -2 -2 -4 -3 -1 -5 MFPW Varies acoording to the size of copy paper. +5V Cassette 3 paper width detection SVR2 J826-1 J117B-11 -2 -10 -3 -9 C3PW Varies acoording to the size of copy paper. +5V Cassette 4 paper width detection SVR3 J828-1 J117A-13 -2 -12 -3 -11 C4PW Varies acoording to the size of copy paper.
CHAPTER 2 BASIC OPERATION Inputs to the DC Controller (8/8) DC controller PC +5V Cassette 3 paper detection SV1 J827-4 J122A-4 -1 -1 -2 -2 -3 -3 J829-4 J122B-4 -1 -1 -2 -2 -3 -3 C3PL0 C3PL1 Varies depending on the length of copy paper.
CHAPTER 2 BASIC OPERATION F. Outputs from the DC Controller Outputs from the DC Controller (1/11) (120V model) DC controller PCB J714-2 J104A-3 -1 -4 FDOD When ’1’, the front door is open. +12V J716-2 -7 -1 -8 CB1 PWOFF* Power supply unit When ’0’, the power switch turns OFF.
CHAPTER 2 BASIC OPERATION Outputs from the DC Controller (1/11) (220/240V model) DC controller PCB J714-2 J104A-4 -1 -3 FDOD When ’1’, the front door is open. +12V J716-2 -7 -1 -8 CB1 PWOFF* When ’0’, the power switch turns OFF. SW1ON* When the power switch turns ON, "0".
CHAPTER 2 BASIC OPERATION Outputs from the DC Controller (2/11) DC controller PCB Main motor M1 J601-1 38V -2 0V From power supply unit J602-12 J733-3 J111B-2 -11 -4 -3 -14 -5 -4 -13 -2 -1 J611-1 38V -2 0V 5V M1FG M1ON From power supply unit 5V Pick-up motor M2 J612-1 J114B-10 -3 -12 -8 -5 -7 -6 -6 -7 -5 -8 -4 -9 -2 -11 J631-1 38V -2 0V 5V M2BRK M2FG M2H/L M2ON From power supply unit 5V Scanning motor M3 J632-11 J778-3 J112B-2 -12 -2 -1 -9 -5
CHAPTER 2 BASIC OPERATION Outputs from the DC Controller (3/11) DC controller PCB J739 J736 J110A-3 M741 -1 -3 -1 -4 -2 M4 Lens (X) motor X-HOLD -6 -2 -5 -6 -4 -5 M4_A M4_A* M4_B M4_B* While M16 rotates, altemates between ’1’ and ’0’. (pulse signal) J736 J110A-12 M740 -1 M5 Lens (Y) motor Y-HOLD -15 -2 -3 -10 -4 -11 -5 -6 -13 -14 M5_A M5_A* While M17 rotates, altemates between ’1’ and ’0’.
CHAPTER 2 BASIC OPERATION Outputs from the DC Controller (4/11) DC controller PCB J754 Holding tray recirculating lever motor J2071 -4 -4 -4 -2 -5 -5 -5 M7 J209-1 J751-1 M8 J113A-9 J113A-13 -2 -2 -3 Holding tray (X) motor J207 J755-1 -3 -4 -4 -5 -6 -5 -12 -11 -6 M7ON When ’1’ , M7 turns on. M8_A While in rotation, alternates between ’1’ and ’0’. M8_HLD When ’1’, M8 stops. M8_B While in rotation, alternates between ’1’ and ’0’.
CHAPTER 2 BASIC OPERATION Outputs from the DC Controller (5/11) DC controller PCB 24V Hopper motor (for stirring) M10 J719-1 J770-1 J105A-1 -2 -2 -2 J720-1 -3 J105A-3 -2 -4 -4 M10ON* When ’0’, M10 turns ON.
CHAPTER 2 BASIC OPERATION Outputs from the DC Controller (6/11) DC controller PCB Heat exhaust fan FM2 Fixing heat exhaust fan FM3 Developing fan FM5 Feeding fan FM6 Cleaner fan FM7 Scanner cooling fan FM8 J704-1 J117B-12 -2 -13 J710-1 J104A-1 -2 -2 J784-1 J115A-1 -2 -2 J109-1 J109-1 -2 -2 J3774-1 J114B-3 -2 -4 J715-2 J104A-5 -1 -6 FM2D At 12V, rotates at half speed; at 24V, rotates at full speed. FM3D At 24V, rotates. FM5D At 24V, rotates.
CHAPTER 2 BASIC OPERATION Outputs from the DC Controller (7/11) DC controller PCB 24V Hollding tray feeding 1 clutch CL1 J870-2 J112A -6 -1 -7 J871-2 J112A -8 -1 -9 HTF1CD* When ’0’, CL1 turns ON.
CHAPTER 2 BASIC OPERATION Outputs from the DC Controller (8/11) DC controller PCB 24V Pick-up vertical path roller 3 drive clutch CL11 J810-1 J809-1 J117B-1 -2 -2 -2 J813-1 J812-1 J130A-1 -2 -2 -2 J817-1 J816-1 J130B-1 -2 -2 -2 J794-1 J793-1 J116A-1 -2 -2 -2 CL11D* When ’0’, CL11 turns ON. 24V Cassette 4 pick-up clutch CL12 C4PUCD* When ’0’, CL12 turns ON. 24V Pick-up vertical path roller 4 drive clutch CL13 CL13D* When ’0’, CL13 turns ON.
CHAPTER 2 BASIC OPERATION Outputs from the DC Controller (9/11) DC controller PCB 24V Delivery paper deflecting solenoid SL2 J2749-2 J2755-31 J108B-9 -1 -30 -10 J2753-2 J2755-23 J108B-9 -1 -22 -10 DPDSD* When ’0’, SL2 turns ON. 24V Fixing drive stop solenoid SL3 FXDSD* When ’0’, SL3 turns ON.
CHAPTER 2 BASIC OPERATION Outputs from the DC Controller (10/11) DC controller PCB 24V Cassette 3 pick up roller releasing solenoid SL11 J822-1 J805-9 J117A-9 -2 -10 -10 J823-1 J812-9 J130A-9 -2 -10 -10 C3PURR* When ’0’, SL11 turns ON. 24V Cassette 4 pick-up roller releasing solenoid SL12 C4PURR* When ’0’, SL12 turns ON. 24V Fixing/feeding unit locking solenoid SL13 J2754-1 J108B-1 -2 -2 J2746-1 J108A-10 -2 -11 FFULSD* When ’0’, SL13 turns ON.
CHAPTER 2 BASIC OPERATION Outputs from the DC Controller (11/11) DC controller PCB 24V Counter 1 CNT1 J718-1 J104B-1 -2 -2 TCNTD* When ’0’, the total counter turns ON. 24V Counter 2 (Accessory) J7181-1 J104B-7 -2 -6 CNT2 When ’0’, the option counter OPCNTD* turns ON. Option counter PCB LED1 Pre-exposure LEDs 24V J712-1 J711-1 J103B-1 -3 -3 -2 LED2 24V J708-4 J706-5 Blank exposure LEDs When ’0’, the pre-exposure LEDs PEXP* turn ON.
CHAPTER 2 BASIC OPERATION G. Inputs to and Outputs from the Options (1/1) DC controller PCB J772 Connection to RDF -1 J7710-1 J115A-5 -2 -2 -6 -3 -3 -7 -4 -4 -8 -7 -5 -9 -8 -6 10 -11 J887-1 -12 -2 0VU -9 -3 24VA -10 -4 0VA -6 -5 24VU -1 J701-1 J102-1 -2 -2 -2 -3 -3 -3 -4 -4 -4 TXD GND RXD GND FG RFEDGE See the RDF Service Manual. 24VU From power supply unit J703 Connection to sorter TXD GND RXD GND See the Sorter Service Manual.
BLANK PAGE
CHAPTER 3 EXPOSURE SYSTEM This chapter discusses the principles of operation used for the copier's lens drive unit and scanner drive unit. It also explains the timing at which these drive units are operated, and shows how they may be disassembled/assembled and adjusted. I. II. III. BASIC OPERATIONS ........................3-1 A. Varying the Reproduction Ratio.....3-1 LENS DRIVE MECHANISM ...............3-2 A. Moving the Lens ............................3-2 SCANNER DRIVE MECHANISM .......3-6 A.
BLANK PAGE
CHAPTER 3 EXPOSURE SYSTEM I. BASIC OPERATIONS A. Varying the Reproduction Ratio The reproduction ratio in the axial direction of the drum is varied by the lens drive system, and the reproduction ratio in the drum peripheral direction is varied by the scanner drive system and the main drive system. The lens drive system uses a zoom lens; as shown in Figure 3-101, the position of the lens and the focal distance are changed to vary the reproduction ratio in the axial direction of the drum.
CHAPTER 3 EXPOSURE SYSTEM II. LENS DRIVE MECHANISM A. Moving the Lens 1. Outline The copier picks up and feeds copy paper using center reference; originals, on the other hand, are placed using rear reference when the copyboard cover is used. As such, the lens is moved in Y direction (vertical) to suit the width of copy paper even in Direct mode.
CHAPTER 3 EXPOSURE SYSTEM 2. Moving the Lens a. Moving the Lens in Y Direction (vertical) The copier’s lens is installed to a mobile lens stage which moves in Y direction (vertical) by the rotation of the lens Y motor (M5). b. Moving the Lens in X Direction (horizontal) The lens is moved in X direction (horizontal) by the rotation of the lens X motor (M4) installed to the back of the lens stage. 3. Controlling the Lens Motors Both lens X motor (M4) and lens Y motor (M5) are 4-phase stepping motors.
CHAPTER 3 EXPOSURE SYSTEM 4. Moving the Lens a. At Power-On When the power switch is turned ON, the lens X motor (M4) rotates, thereby moving the lens in the direction of the lens X home position sensor (PS6). Then, the lens Y motor (M5) rotates to move the lens in the direction of the lens Y home position sensor (PS7).
CHAPTER 3 EXPOSURE SYSTEM Light-blocking belt Lens Lens stage Light-blocking belt Lens Y home position sensor (PS7) X direction Cam plate Signal plate Cam groove Lens Y motor (M5) Signal plate Lens X motor drive signal Y direction Lens X home position signal (LXHP) Lens X home position sensor (PS6) Lens Y motor drive signal Lens Y home position signal (LYHP) Lens X motor (M4) Enlarge Reduce DC controller PCB Figure 3-205 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 3 EXPOSURE SYSTEM III. SCANNER DRIVE MECHANISM A. Driving the Scanner 1. Outline The scanner is moved forward and in reverse by changing the direction in which the scanner motor (M3) rotates. The speed at which the scanner motor rotates when the scanner moves forward varies according to the selected reproduction ratio. The speed at which the scanner motor rotates when the scanner moves in reverse remains the same regardless of the selected reproduction ratio; it is 2.
CHAPTER 3 EXPOSURE SYSTEM 2. Relationship between Scanner Sensor and Signals Scanner Scanner sensor Signal Description Forward Scanner home position sensor (PS1) Reverse SCHP • The scanner is at home position. • The scanner has reached home position. Original detection leading edge 1 sensor (PS3) • The registration clutch turns ON. • The scanner is checked against reference travel distance. SCDP1 • The brakes are applied to the scanner to slow down. Table 3-301 COPYRIGHT © 1997 CANON INC.
CHAPTER 3 EXPOSURE SYSTEM 3. ,, Basic Sequence of Operations for Scanner Movement The distance over which the scanner moves forward is determined by the microprocessor in relation to the copy paper size and the reproduction ratio as well as copying mode. The microprocessor computes the dimensions of an original that can be copied to the selected copy paper size and reproduction ratio to determine the distance over which the scanner travels forward.
, , CHAPTER 3 EXPOSURE SYSTEM 4.
CHAPTER 3 EXPOSURE SYSTEM Reference: If two or more modes are selected, the scanner is controlled using the lowest value that has been obtained by reading the size of the original. The microprocessor exerts control with reference to the size of the original when the following modes are selected: Reference original size Mode • RDF in use Original size detected by the feeder • Original frame erasing mode Original size set by the user Table 3-302 3-10 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV.
CHAPTER 3 EXPOSURE SYSTEM 5. Scanner Motor (M3) Control Circuit a. Outline Figure 3-304 shows the circuit that controls the scanner motor, and the circuit has the following functions: q Turning on and off the scanner motor. w Controlling the rotation direction of the scanner motor. e Controlling the rotation of the scanner motor to a specific speed. b. Stopping the Motor When the scanner motor drive control signal (M3ON) goes ‘0’, the drive circuit turns OFF and the motor remains stationary. c.
CHAPTER 3 EXPOSURE SYSTEM The rotation speed control circuit compares the scanner speed signal and the clock pulse (SCMCLK) generated by the scanner motor and sends control signals to the motor drive circuit according to the difference. The motor drive circuit does not change the voltage applied to the motor but rather turns ON and OFF the power to the motor at short intervals to control the speed of rotation. (The voltage is maintained constant, but the ON/OFF periods are varied.
CHAPTER 3 EXPOSURE SYSTEM IV. OTHERS A. Detecting the Size of Originals 1. Outline The copier is provided with an auto paper selection function and an auto reproduction ratio selection function, which require identification of the size of originals.
CHAPTER 3 EXPOSURE SYSTEM Phototransistor LED LEGAL Original detection circuit 1 Original detection circuit 2 "11x17" LETTER STMT LETTER-R Original detection circuit 0 "11x17" LEGAL LETTER PS5 DC controller PCB INCH size (North American specification) Figure 3-401b 2. Operation The DC controller measures the outputs of the original detection circuits for 15 sec after the closing copyboard cover turns on the copyboard cover open/closed sensor (PS5) or at intervals of 0.
CHAPTER 3 EXPOSURE SYSTEM If an original is over a sensor, the light reflected by the original is received by the original detection circuit so that the output of the detection circuit is specific regardless of the angle of the copyboard cover. If no original is over the sensor, on the other hand, the output immediately after PS5 turns on is small.
CHAPTER 3 EXPOSURE SYSTEM b. Inch Configuration Original detection signal DS2 Size DS1 Sensor 2 Sensor 1 Sensor 0 Inch 0 0 0 None 0 0 1 LTRR 0 1 1 LGR 1 0 0 LTR 1 1 1 11” × 17” Table 3-402 3-16 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 3 EXPOSURE SYSTEM V. DISASSEMBLY AND ASSEMBLY This section explains mechanical characteristics and describes how to disassemble/assemble the machine. Be sure to observe the following whenever disassembling/assembling the machine: 1. ! Disconnect the power plug before starting the work. 2. Unless otherwise shown, assemble the parts by reversing the steps given to disassemble them. 3. Identify each screw by type (length, diameter) and location. 4.
CHAPTER 3 EXPOSURE SYSTEM w q Figure 3-502 8) Remove the mounting screw r, and remove the RDF detecting assembly t. t r Figure 3-503 9) Remove the three mounting screws y, and disconnect the two connectors u; then, remove the scanner drive motor i. y i u y Figure 3-504 3-18 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 3 EXPOSURE SYSTEM Caution: The gear on the motor shaft is in contact with the drive belt; remove the motor while detaching the belt from the gear. Caution: When removing the scanner drive motor, be sure to mark the end of the motor assembly with a scriber for positioning later. The scanner drive motor assembly is fixed in position using a special jig so that the tension on the belt of the motor assembly is within a specific range of values. 2.
CHAPTER 3 EXPOSURE SYSTEM 3. 1) 2) 3) 4) 5) Removing the Scanner Drive Cable Remove the upper right cover, left cover, rear cover, and upper rear cover. Remove the copyboard glass. Remove the control panel. Remove the RDF rear right mount. (See p. 3-17.) Remove the two mounting screws q, and remove the scanner locking disk w. w q Figure 3-506 6) Disconnect the three connectors from the potential control PCB and the connector for the service switch.
CHAPTER 3 EXPOSURE SYSTEM 8) Remove the two cable fixing screws (rear) y from the No. 1 mirror mount. y Figure 3-508 9) Remove the two cable fixing screws (front) u from the No. 1 mirror mount. u Figure 3-509 10) Loosen the tension screws i, and loosen the scanner cable. i Figure 3-510a 11) Remove the scanner cable. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 3 EXPOSURE SYSTEM 4. Adjusting the Tension of the Scanner Drive System When you have installed the scanner drive cable, be sure to perform the following steps to adjust the tension on the cable: 1) Remove the five mounting screws, and remove the upper left cover. 2) Loosen the fixing screw on the tension spring bracket. 3) Turn the tension adjusting screw so that the value is as indicated below.
CHAPTER 3 EXPOSURE SYSTEM 5. Positioning the Mirror When you have installed the scanner drive cable, be sure to perform the following steps to adjust the mirror position: 1) Move the No. 1 mirror mount and the No. 2/No. 3 mirror mount to the left. 2) Set the mirror positioning tool (front, rear; FY9-3011) as indicated. Figure 3-511 3) Tighten the two screws on the clamp used to fix the scanner drive cable to the No. 1 mirror mount. Figure 3-512 4) Remove the tool. COPYRIGHT © 1997 CANON INC.
CHAPTER 3 EXPOSURE SYSTEM 6. Adjusting the Position of the Scanner After making copies, remove the control panel, and check to make sure that the line A of the electrode, i.e., the front of the No. 1 mirror mount, matches B of the hole in the glass support (front). Otherwise, change the setting of ‘BRAKE_SC’ in service mode (*3*) so that the line of A matches B. Electrode mount (front) No. 1 mirror mount A (left) of wall Glass support (front) Hole B Figure 3-513 3-24 COPYRIGHT © 1997 CANON INC.
CHAPTER 3 EXPOSURE SYSTEM B. Lens Drive Assembly Take note of the following when handling the zoom lens or the lens stage drive motor; the gear of the output shaft may become damaged if you turn on the power without removing the lens fixing or if you move the lens or the lens stage without disconnecting the power plug. q At the time of installation of the machine, be sure to remove the lens fixing from the lens stage before connecting the power plug.
CHAPTER 3 EXPOSURE SYSTEM 4) Remove the two cable mounting screws e, and remove the two mounting screws r; then, lift the lens Y direction drive motor together with its support t. t r e Figure 3-515 5) Disconnect the connector y, and remove the two mounting screws u; then, remove the lens Y direction drive motor i. u y i Figure 3-516 3-26 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 3 EXPOSURE SYSTEM 2. Removing the Lens Stage Temporarily 1) Remove the copyboard cover. 2) Move the No. 1 mirror mount to the left of the scanner rail. Caution: Be sure to push the center of the No. 1 mirror mount. 3) Remove the lens hood. 4) Remove the Y direction cable clamp, and fix the end of the Y direction cable in place temporarily. 5) Remove the mounting screw q, and remove the light-blocking plate w (on the lens mount).
CHAPTER 3 EXPOSURE SYSTEM 7) Lift the lens stage t, and remove the bushing y from the rail u. t y u Figure 3-519 3. Installing the Light-Blocking Belt 1) Take up the light-blocking sheet w on the bobbin q, thereby removing the slack; then, turn the bobbin mount e two to three times to the right, fit the boss on the bottom of the bobbin mount into the hole in the belt mount r to set the bobbin, and fix it in place with a mounting screw t. q t w e r Figure 3-520 3-28 COPYRIGHT © 1997 CANON INC.
CHAPTER 3 EXPOSURE SYSTEM 4. Removing the Lens X Direction Drive Motor 1) Remove the lens stage. 2) Disconnect the connector q, and remove the mounting screw w; then, remove the motor mount e. q w e Figure 3-521 3) Remove the two mounting screws r, and remove the lens X direction drive motor t from the motor mount. t r Figure 3-522 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 3 EXPOSURE SYSTEM 5. Attaching the Lens X Direction Drive Belt Attach the belt with a mounting screw w when the lens X direction drive motor q has lowered on its own weight. q w Own weight Figure 3-523 6. Attaching the Light-Blocking Belt e q w r q Light-blocking belt 1 w Light-blocking belt 2 e Light-blocking belt 3 r Light-blocking belt 4 Figure 3-524 3-30 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 3 EXPOSURE SYSTEM 7. When Replacing the Light-Blocking Belt 1) Take up the belt q on the bobbin w by turning it clockwise, and tape it in place. w q e Figure 3-525 2) Fix the light-blocking belt mount in place on the lens mount. 3) Turn the bobbin clockwise and counterclockwise by giving it several half turns; then, release it so that the spring inside the bobbin is free. 4) With the bobbin turned 2 to 2.5 times clockwise, detach the tape, and slide out the end of the belt.
blank page
CHAPTER 4 IMAGE FORMATION SYSTEM This chapter discusses the principles of how images are formed. It also explains the timing at which the various units involved in image formation are operated, and shows how they may be disassembled/assembled and adjusted. I. II. PROCESSES .....................................4-1 A. Controlling the Surface Potential of the Drum....................................4-1 B. Controlling the Scanning Lamp Intensity .........................................4-6 C.
blank page
CHAPTER 4 IMAGE FORMATION SYSTEM I. PROCESSES A. Controlling the Surface Potential of the Drum 1. Outline Changes in the latent static images affect the quality of copy images to a very high degree, and such changes can be caused by any of the following: q changes in the sensitivity of the drum. w changes in the degree of charging by the primary corona assembly. e changes in the degree of exposure. These changes, in turn, are caused by changes in the site of installation (e.g.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Control Method The copier uses its internal potential sensor to measure the dark area potential (VD) and the light area potential (VL1) of the drum surface, and uses the data to enable the target value through correction. In addition, the copier measures the light area potential (VL2) for developing bias in relation to the conditions it used for such correction when determining the DC component of the developing bias.
CHAPTER 4 IMAGE FORMATION SYSTEM a. Primary Current Control To measure the dark area potential (VD) for the first time after power-on, a reference current (setting stored in ROM) is sent to the primary charging assembly, and the potential sensor is used to measure the drum surface potential.
CHAPTER 4 IMAGE FORMATION SYSTEM Note: If the measurement is in excess of the control range of the target value after measuring the potential eight times, the notation ‘1’ will be indicated for ‘LLMT’ (upper limit flag of the lamp ON voltage) in service mode (display mode; *1*). c.
CHAPTER 4 IMAGE FORMATION SYSTEM 3. Potential Measurement Circuit Figure 4-103 is a cross-sectional diagram of the potential sensor, and Figure 4-104 is a block diagram of the potential measuring circuit. The drive signal from the sensor drive circuit drives the chopper to detect the drum surface potential with the electrode in the sensor unit.
CHAPTER 4 IMAGE FORMATION SYSTEM B. Controlling the Scanning Lamp Intensity 1. Outline Figure 4-105 shows the circuit used to control the intensity of the scanning lamp, and the circuit has the following functions: q Turning ON and OFF the scanning lamp. w Controlling the intensity of the scanning lamp. • Maintains the intensity to a specific level against changes in the voltage of the power supply. • Controls the intensity to suit the sensitivity of the drum.
CHAPTER 4 IMAGE FORMATION SYSTEM The LINT signal varies the pulse duty between 10% and 57.6% according to the setting of the Copy Density key or the density of the original, sensitivity of the drum and the setting of the intensity control VR so that the supply voltage to the scanner varies between 45 and 65 V (effective value) by way of exerting phase control. 10% pulse duty 100% pulse duty Figure 4-106 c.
CHAPTER 4 IMAGE FORMATION SYSTEM Scanning lamp intensity Figure 4-108 shows the changes in the intensity of the scanning lamp in relation to differing densities of originals. If the density of an original is lower (darker) than that of the Test Sheet and higher (lighter) than that of a newspaper, the intensity of the scanning lamp varies between F5 and F9 with reference to the copy density indications.
CHAPTER 4 IMAGE FORMATION SYSTEM 4. Check Points a. Checking the Voltage of J111B-8 (LAON) Check to make sure that the voltage between J111B-8 and J111B-5 (GND) on the DC controller PCB is about 5 V while the scanner is moving forward and is 0 V during initial rotation, while the scanner is moving in reverse, and during last rotation. b. Intensity/AE Adjustment Table 4-103 is a list of items that may be adjusted using the scanning lamp intensity control circuit.
CHAPTER 4 IMAGE FORMATION SYSTEM C. Controlling the Primary/Transfer Corona Current 1. Outline Figure 4-109 shows the circuit that controls the primary/transfer corona, and the circuit has the following functions: q Turning ON and OFF the primary corona current. w Controlling the primary corona current to a specific level. e Turning ON and OFF the transfer corona. r Controlling the transfer corona to a specific level. 2.
CHAPTER 4 IMAGE FORMATION SYSTEM Q156 Microprocessor J202 -6 HVTPC J114 -A5 J202 -1 DCON D/A converter J202 -5 HVTTC J114 -A6 J114 -A10 T502 + -- Variable width pulse oscillator circuit Primary high-voltage transformer Photosensitive drum Variable width pulse oscillator circuit Comparator circuit DC controller PCB Drive circuit Switching circuit + -- Primary charging assembly HVT T501 Drive circuit Transfer charging assembly Transfer high-voltage transformer Figuire 4-109 In this cond
CHAPTER 4 IMAGE FORMATION SYSTEM The transfer corona current output is turned ON and OFF by the high-voltage DC remote signal (DCON). Further, the output level of the transfer current is controlled by the transfer charging level control signal (HVTTC). When the HVTTC signal is about 3 V or more and less than 11 V, the output of the transfer corona current turns ON; it turns OFF when the signal is about 12 V or more. a. Transfer Corona Current OFF HVTTC is about 12 V. DCON is ‘0’.
CHAPTER 4 IMAGE FORMATION SYSTEM D. Controlling the Separation/ Pre-Transfer Corona Current 1. Outline The circuit shown in Figure 4-111 is the circuit that controls the separation corona current and the pre-transfer corona current, and the circuit has the following function: q Turning ON and OFF the separation/pre-transfer corona current. w Switching the separation corona current. e Controlling the separation corona current to a specific level. r Switching the pre-transfer corona current.
CHAPTER 4 IMAGE FORMATION SYSTEM Temperature ( C) Separation current (-) Drum surface potential high Drum surface potential medium Drum surface potential low Figure 4-112 The corona current is varied to suit the measurements of temperature and humidity taken by the environment sensor, thereby limiting the effects of the environment. Pre-transfer current (-) Humidity (%) Figure 4-113 4-14 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Turning ON and OFF the Separation/ Pre-Transfer Corona Current The separation corona current and the pre-transfer corona current are turned ON and OFF by the HVTAC drive signal (HVP.POST.AC), roller electrode drive signal (ROED), and high-voltage DC drive signal (DCON). 3.
CHAPTER 4 IMAGE FORMATION SYSTEM 5. Controlling the DC Component Overcurrent of the Separation/Pre-Transfer Corona Current If an overcurrent flows into the separation/pre-transfer charging assembly, the highvoltage transformer stop signal (HVTOFF) is generated to cut off the corona current (DC/AC component) temporarily to the pre-transfer/separation charging assembly.
CHAPTER 4 IMAGE FORMATION SYSTEM E. Controlling the Blank Exposure Lamp (LEDs) 1. Outline The blank exposure lamp is a LED array consisting of 134 LEDs. All 134 LEDs turn ON when the blank exposure lamp ON signal (BLKON) goes ‘0’ while the drum is rotating to prevent adhesion of unwanted toner on the photosensitive drum. (This does not apply while an original is exposed or during potential control and AE measurement.
CHAPTER 4 IMAGE FORMATION SYSTEM 5. Controlling the Activation in Original Frame Erasing Mode In original frame erasing, LEDs are turned ON so that a margin (about 2 mm) along the sides in relation to the original are kept free of toner. Paper size Non-image width All paper sizes 2.75 ± 2.5mm Table 4-105 ,,,,, ,,,,, ,,,,, ,,,,, 6.
CHAPTER 4 IMAGE FORMATION SYSTEM 7. Controlling the Activation in Hole Image Erasing Mode Hole image erasing mode is provided to prevent black dots from appearing on copies made of an original with holes. LEDs are turned ON so that a width covering such holes will be free of toner. The width may be varied between 1 and 20 mm. Feeding direction 1~20mm Figure 4-118 8. Controlling the Activation of AE Mode In AE mode, the surface potential of the drum is measured, requiring that LEDs be turned OFF.
CHAPTER 4 IMAGE FORMATION SYSTEM F. Drum Heater Circuit 1. Outline The inside of the photosensitive drum is equipped with a drum heater (60 W), and the heater serves to keep the surface temperature of the drum at a specific level at all times. The AC power is supplied to the drum heater through the power switch (SW1), door switch (SW2), drum heater switch (SW3), and AC driver.
CHAPTER 4 IMAGE FORMATION SYSTEM AC power supply +12V DC controller PCB SW1 Power supply switch Power supply unit SW2 SW3 Drum heater switch Door switch AC driver Drum heater drive circuit J01 -5 Comparator circuit + -- Trigger circuit Triac Drum heater H3 -6 TP3 Thermistor TH Drum heater control PCB J01-1 Figure 4-120 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Idle Rotation of the Photosensitive Drum and the Developing Cylinder In a high-humidity environment, the photosensitive drum and the developing cylinder could absorb moisture, possibly lowering the density of copies made in the morning while at times distorting images.
CHAPTER 4 IMAGE FORMATION SYSTEM G. Cleaning the Primary Charging Wire 1. Outline The copier is equipped with an automatic cleaning mechanism for cleaning the charging wire of the primary charging assembly, and cleaning is executed when the following conditions are met: • The temperature of the fixing roller is 100°C or less at power-on. • Charging wire cleaning is executed in user mode. (p. 1-16) • Last rotation (LSTR) has ended after making about 2000 copies.
CHAPTER 4 IMAGE FORMATION SYSTEM H. Cleaning the Pre-Transfer, Transfer, and Separation Charging Wires Automatically The copier is equipped with an automatic cleaning mechanism for the charging wires used in the pre-transfer, transfer, and separation charging assemblies. As in the case of the primary charging wire automatic cleaning mechanism, a cleaner drive motor is used to operate the cleaning mechanism.
CHAPTER 4 IMAGE FORMATION SYSTEM Transfer/separation charging wire DCDc controller PCB controller Wire Transfer/separation charging wire cleaner motor drive signal TSCLM J108A-1.19 Wire cleaner Re ar Fro nt Transfer/separation charging wire cleaner motor (M6) Figure 4-123 (transfer/separation charging assembly) COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM II. DEVELOPING ASSEMBLY AND CLEANING ASSEMBLY A. Outline The developing assembly is driven by engaging and disengaging the drive from the main motor by the developing clutch (CL8). The cleaning assembly is supplied with drive by the main motor through drum gears.
CHAPTER 4 IMAGE FORMATION SYSTEM B. Detecting the Toner Level and Controlling the Supply Operation The toner inside the developing assembly is monitored by the toner sensor (TS2); when the toner inside the developing assembly drops below a specific level while the developing clutch (CL8) is ON during copying, the developing assembly toner level signal ( DTEP ) goes ‘0’ and the signal is sent to the DC controller PCB.
CHAPTER 4 IMAGE FORMATION SYSTEM The number of copies valid at this time is stored in RAM on the DC controller PCB. If the hopper toner level detection signal ( TEP =1) is detected for 1 sec or more, the DC controller PCB will assume the presence of toner and clear the counter reading while removing the message Add Toner from the control panel. Reference: A piezoelectric oscillator is used inside the developing assembly and the hopper.
CHAPTER 4 IMAGE FORMATION SYSTEM C. Controlling the Developing Bias/Roller Electrode 1. Outline The developing cylinder during copying is given an AC bias and DC bias. The DC bias is a sum of VL2 measured by the potential sensor before starting copying operation and 100 V. To prevent adhesion of unwanted toner to the photosensitive drum, the DC bias is varied according to the surface potential of the drum.
, CHAPTER 4 IMAGE FORMATION SYSTEM If the surface temperature of the fixing roller is 75°C or less and the ambient temperature is 17°C or more, Power switch ON WMUP Main motor (M1) Developing clutch (CL8) DC bias INTR CNTR2 CNTR1 LSTR STBY , AC bias DC bias: : +600V Figure 4-205 Making the 2nd and subsequent copies after 60 min or up to 10 min after power-on, Copy Start key ON INTR AER SCFW SCRV SCFW SCRV LSTR STBY Main motor (M1) Developing clutch (CL8) DC bias AC bi
CHAPTER 4 IMAGE FORMATION SYSTEM , Making the 1st copy after 60 min or more or 10 min or more after power-on, Copy Start key ON INTR Main motor (M1) Developing clutch (CL8) DC bias AC bias CNTR1 DC bias: CNTR2 AER SCFW SCRV SCFW SCRV LSTR STBY :+600V :Potential control value (VL2 + 100 V) Figure 4-207 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM 3. Developing Bias Control Circuit The circuit that controls the developing bias is equipped with the following functions: a. Turing the AC bias ON and OFF. b. Controlling the DC bias to a specific level. q Turning OFF the AC Bias The developing bias remote signal ACBTP is ‘0’. The AC bias switch circuit turns OFF. The drive circuit turns OFF. The AC transformer (T401) output stops. The above condition stops the AC bias to the developing cylinder.
CHAPTER 4 IMAGE FORMATION SYSTEM e Controlling the DC Bias Voltage to a Specific Level The voltage level of the DC bias is determined by the level of the signal (DCBC) from the DC controller PCB. • The high-voltage DC remote signal (DCBTP) is ‘1’. • The roller bias remote signal (ROED) is ‘1’. • The developing DC control signal DCBC is 3 V or more or less than 12 V, and the AC bias switch circuit turns ON.
CHAPTER 4 IMAGE FORMATION SYSTEM w Turning OFF the Roller Electrode • When the high-voltage DC remote signal (DCBTP) is ‘0’ and the roller bias signal (ROED) is ‘0’, the switching circuit turns OFF and the high-voltage transformer drive circuit turns OFF. The DC transformer T402 turns OFF to deprive the roller electrode of the bias.
CHAPTER 4 IMAGE FORMATION SYSTEM D. Detecting the Locking of the Waste Toner Feeding Screw If, for some reason, the waste toner pipe becomes clogged with waste toner and the waste toner feeding screw is prevented from rotation, the waste toner can fall out of the pipe. To prevent such a problem, a feeding screw locking detection mechanism is provided.
CHAPTER 4 IMAGE FORMATION SYSTEM III. DISASSEMBLY AND ASSEMBLY This section explains mechanical characteristics and describes how to disassemble/assemble the machine. Be sure to observe the following when disassembling/assembling the machine: 1. ! Disconnect the power plug before starting the work. 2. Unless otherwise shown, assemble the parts by reversing the steps given to disassemble them. 3. Identify each screw by type (length, diameter) and location. 4.
CHAPTER 4 IMAGE FORMATION SYSTEM 4) While pushing the rear electrode block to the rear with a finger, remove the scanning lamp r. r Figure 4-302 Caution: 1. Do not work until the surface of the scanning lamp has cooled. 2. Do not leave fingerprints on the surface of the scanning lamp. 3. If the surface of the scanning lamp is soiled, dry wipe it. 4. Do not leave fingerprints on the reflecting shade. 5. Take care not to deform the deflecting shade. 6.
CHAPTER 4 IMAGE FORMATION SYSTEM B. Standard White Plate Assembly 1) Remove the RDF. 2) Remove the rear cover. 3) Remove the two mounting screws q, and remove the copyboard glass right retaining plate w. w q Figure 4-304 4) Remove the two stepped screws e (M3x6), and remove the standard white cover r. e r e Figure 4-305 4-38 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM 5) Remove the six mounting screws e, and remove the RDF mount cover r. 6) Remove the two mounting screws t, and remove the rear top cover y. r e y r e t t Figure 4-306 7) Remove the control panel. 8) Remove the two mounting screws u, and remove the standard white plate i. u i u Figure 4-307 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM C. Pre-Exposure Lamp Unit 1. Removing the Pre-Exposure Lamp Unit 1) Open the front door, and slide out the hopper assembly; then, slide out the fixing/feeding unit. 2) Remove the process unit. (See p. 7-17.) 3) Remove the primary charging assembly and the pre-transfer charging assembly. 4) Remove the blank exposure lamp assembly. 5) Remove the two mounting screws q, and remove the blank exposure assembly rail stay w.
CHAPTER 4 IMAGE FORMATION SYSTEM D. Blank Exposure Lamp Assembly 1. Removing the Blank Exposure Lamp Assembly 1) Open the front door, and slide out the hopper assembly. 2) Disconnect the two connectors q, and remove the mounting screw w; then, slide out the blank exposure lamp assembly e. q w e q Figure 4-310 Caution: Take care not to damage the photosensitive drum when removing the blank exposure lamp assembly. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM E. Photosensitive Drum n Photosensitive Drum The copier’s photosensitive drum is a high-sensitivity amorphous silicon drum, whose sensitivity may lower if the drum or the process unit is not positioned correctly. Keep the following in mind whenever handling the photosensitive drum: q If you have removed the process unit from the copier or the photosensitive drum from the process unit, keep the photosensitive drum out of light.
CHAPTER 4 IMAGE FORMATION SYSTEM 7) Remove the two mounting screws e, and remove the front side stay r. r e e Figure 4-312 8) Holding it as shown, remove the photosensitive drum t. t Figure 4-313 Caution: Remove the photosensitive drum, taking care not to damage it. You need not remove the bearing at the rear and the gear at the front. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Replacing the Drum Heater 1) Remove the photosensitive drum from the process unit. 2) Remove the two mounting screws q, and remove the flange w at the front. w q Figure 4-314 Caution: After removing the photosensitive drum, wrap about five to six sheets of copy paper or the drum protection sheet kept near the waste toner case around the photosensitive drum to protect the photosensitive drum from dirt and scratches.
CHAPTER 4 IMAGE FORMATION SYSTEM G. Primary Charging Assembly 1. 1) 2) 3) Removing the Primary Charging Assembly Open the front door, and open the hopper assembly. Loosen the mounting screw q, and slide up the fixing member w to fix it in place. Disconnect the connector e, and remove the primary charging assembly r. r w e q Figure 4-315 Note: After servicing the charging assembly, execute cleaning of the wire in user mode.
CHAPTER 4 IMAGE FORMATION SYSTEM I. Transfer/Separation Charging Assembly 1. 1) 2) 3) Removing the Transfer/Separation Charging Assembly Open the front door, and slide out the fixing/feeding unit. Remove the fixing/feeding front cover. Remove the mounting screw q, and remove the fixing guide w. q w Figure 4-317 4) Disconnect the connector e, and slide out the transfer/separation charging assembly r to the front; then, remove it by lifting it at an angle to the left.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Installing the Transfer/Separation Charging Assembly Install the transfer/separation charging assembly by reversing the steps used to remove it with the following in mind: 1) Fit the four bosses q of the transfer/separation charging assembly into the cut-offs of the fixing/feeding unit frame w. 2) Slide it from the front so that the leaf spring e will come into contact with the frame of the transfer/separation charging assembly.
CHAPTER 4 IMAGE FORMATION SYSTEM 3) Install the fixing guide plate r with a mounting screw t. t r Figure 4-322 4) Execute cleaning of the wire in user mode. (If the surface temperature of the upper fixing roller is 100°C or less, you need not perform this step, as the execution will be automatic.) 4-48 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM J. Charging Wire 1. Outline The primary, pre-transfer, transfer/separation charging wires are located around the photosensitive drum. (The wire diameter is 0.06 mm.) 2. Removing the Primary Charging Assembly Wire Cleaner 1) Hold the wire cleaner, and disengage it with a flat-blade screwdriver. Figure 4-323 3. Installing the Charging Wire The charging wire (except the grid wire) is installed in the same way for all charging assemblies.
CHAPTER 4 IMAGE FORMATION SYSTEM 3) Free a length of about 5 cm from a 0.06mm-dia. charging wire reel, and form a loop of about 2 mm in diameter. Reference: To form a loop, wind the wire around a hex key once, and twist the hex key three to four times; then, twist the charging wire. 4) Cut the excess end of the twisted charging wire by a nipper or the like. 5) Hook the loop on the stud.
CHAPTER 4 IMAGE FORMATION SYSTEM (correct) (wrong) Grid side (correct) (wrong) Figure 4-328 Primary Charging Wire 9) Install the cushion to the front of the charging wire. (This does not apply to the primary charging assembly.) 10) Remove the shielding plate (left, right). Caution: For other charging assemblies, install the lids (2 pcs.). 11) Install the wire cleaner. (At this time, pay attention to the orientation of the wire cleaner.
CHAPTER 4 IMAGE FORMATION SYSTEM 3) Loosen the mounting screw, and move it in the direction of the arrow shown in Figure 4-330; then, fix it in place temporarily. Screw Figure 4-330 4) Free a length of about 5 cm from a 0.1mm-dia. charging wire reel, and form a loop at the end of about 2 mm in diameter. Reference: To form a loop, wind the charging wire around the hex key once, turn the hex key three to four times, and twist the wire. 5) Cut the twisted wire (excess) by a nipper.
CHAPTER 4 IMAGE FORMATION SYSTEM 11) Wipe the grid wire with lint-free paper moistened with alcohol. Caution: 1. Check to make sure that the grid wire is not broken or twisted. 2. Check to make sure that the wire is run at even intervals, i.e., it is in the groove of the block. 5. Adjusting the Height of the Charging Wire Height of charging wire Assembly Range Primary ± 1mm 7.5 +1.5 - 0 mm 7.5 +1.5 - 0 mm A No adjustment mechanism Pre-transfer 9.5 +1.0 - 0 mm B Transfer 10.2 –0.
CHAPTER 4 IMAGE FORMATION SYSTEM 6. 1) 2) 3) 4) 5) Cleaning the Primary Charging Assembly Anti-Stray Toner Sheet Open the front doors. Remove the developing assembly. Remove the hopper unit. Remove the process unit. Remove the two screws q, and remove the blanking exposure rail w. w q q Figure 4-333 6) Clean the primary charging anti-stray toner sheet e. e Figure 4-334 4-54 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM K. Developing Assembly Caution: The copier’s developing assembly is not equipped with a protection cover, requiring you to be careful not to damage the developing assembly after removing the developing assembly. Be sure not to install the developing locking assembly if the developing assembly is not set in the copier.
CHAPTER 4 IMAGE FORMATION SYSTEM 2. Removing the Blade Unit 1) Remove the developing assembly from the copier. 2) Remove the two mounting screws q, and remove the developing assembly cover w. w q q Figure 4-337 3) Place a newspaper on the floor or a desk, and pour out the toner from the developing assembly. 4) Remove the two mounting screws e, and remove the blade unit r together with the mounting plate. r e e Figure 4-338 Caution: The blade must be installed with high precision.
CHAPTER 4 IMAGE FORMATION SYSTEM 4. 1) 2) 3) Removing the Developing Cylinder and the Magnetic Seal Remove the developing assembly from the copier. Remove the blade unit. Remove the two mounting screws q, and remove the gear unit w together with the gear. q w q Figure 4-339 Caution: When removing the gear unit, be careful of the gear attached to the screw, as it will become free.
CHAPTER 4 IMAGE FORMATION SYSTEM 5) Remove the two mounting screws u, and remove the electrode plate i. u i Figure 4-341 6) Remove the mounting screw o, and remove the magnetic positioning plate !0. o !0 Figure 4-342 7) Remove the grip ring !1 from the cylinder shaft at the front, and remove the butting roll !2. !1 !2 Figure 4-343 4-58 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM 8) Remove the two mounting screws !3, and remove the blade !4 together with the mount. !3 !4 !3 Figure 4-344 9) Remove the bearing !5 at the front and the rear, and remove the developing cylinder !6. !5 !6 !5 Figure 4-345 Caution: Do not leave fingerprints or oil on the surface of the developing cylinder. If necessary, dry wipe it with lint-free paper. (Do not use solvent.) 5.
CHAPTER 4 IMAGE FORMATION SYSTEM L. Hopper Assembly 1. 1) 2) 3) Removing the Hopper Assembly Remove the developing assembly from the copier. (See p. 4-55.) Slide out the hopper assembly to the front. (See p. 7-16.) Remove the mounting screw q, and remove the hopper assembly w. q w Figure 4-347 4-60 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM M. Drum Cleaner 1. Construction Cleaning blade Separation claw Figure 4-348 2. 1) 2) 3) Removing the Cleaning Blade Slide out the process unit from the copier. (See p. 7-17.) Disconnect the connector q of the drum heater AC line. Remove the four mounting screws w, and remove the cleaning blade assembly e. e w q w Figure 4-349 4) Remove the E-ring r, and remove the pressure spring t. t r Figure 4-350 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM 5) Loosen the five mounting screws y, and remove the cleaning blade from the blade support plate. y Figure 4-351 3. Installing the Cleaning Blade Install the cleaning blade by reversing the steps used to remove it. 1) Push in the cleaning blade q until it butts against the rear. No gap. q Blade retaining plate Figure 4-352 2) Lightly tighten the five mounting screws w; then, temporarily fix them in place where resistance is felt.
CHAPTER 4 IMAGE FORMATION SYSTEM 4. Installing the Side Seal 1) Install the side seal q on the inner side of the cleaner housing where indicated (both ends) while taking care so that it is not displaced outside the edge. q Figure 4-354 5. Cleaning the Cleaning Side Scraper Perform the following when replacing the cleaner blade (every 500,000 copies). 1) Remove the cleaning blade.
CHAPTER 4 IMAGE FORMATION SYSTEM Remove waste toner. 30~40mm 4~8mm A (front) Toner guide roller Magnet roller Side scraper (front) Figure 4-355b 4) Turn the magnet roller clockwise (while viewing it from the front). 5) If a coating has developed once again in the area from which waste toner was removed in step 3), repeat steps 3) through 5). 4-64 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 4 IMAGE FORMATION SYSTEM N. Separation Claw/Separation Claw Drive Assembly 1. 1) 2) 3) Removing the Separation Claw/Separation Drive Assembly from the Drum Unit Remove the process unit from the copier. (See p. 7-17.) Remove the screw q, and remove the No. 2 heat insulting plate w. Remove the screw e, and remove the claw holder r. w q e r e Figure 4-356 Caution: 1. Take care not to bend the separation claw. 2. Take care not to damage the photosensitive drum. COPYRIGHT © 1997 CANON INC.
CHAPTER 4 IMAGE FORMATION SYSTEM O. Waste Toner Feeding Assembly 1) Slide out the process unit and the fixing/feeding unit from the copier. (See p. 7-17, p. 5-82.) 2) Remove the rear cover. 3) Remove the cleaner fan and the feeding fan. (See p. 7-30.) 4) Remove the high-voltage transformer PCB. 5) Remove the waste toner drive assembly together with the waste toner feeding assembly. 6) Remove the mounting screw q, and remove the waste toner feeding screw locking sensor w.
CHAPTER 5 PICK-UP/FEEDING SYSTEM This chapter explains the principles used from when copy paper is picked up to when a copy is delivered in view of the functions of electrical and mechanical units and in relation to their timing of operation. It also shows how these units may be disassembled/assembled and adjusted. I. II. III. IV. V. VI. PICK-UP/FEEDING SYSTEM ............5-1 A. Outline ...........................................5-1 PICK-UP FROM THE CASSETTE .....5-3 A. Pick-Up Operation ..............
blank page
CHAPTER 5 PICK-UP/FEEDING SYSTEM I. PICK-UP/FEEDING SYSTEM A. Outline The copier uses center reference, in which copy paper is moved along the center of the pick-up/feeding path, thereby ensuring stable pick-up feeding operations. The pick-up system consists of the paper deck, cassettes, and multifeeder assembly; in addition, the system includes the holding tray assembly and the holding tray feeding assembly for making two-sided/overlay copies.
CHAPTER 5 PICK-UP/FEEDING SYSTEM Registration roller Delivery paper deflecting plate Fixing assembly Delivery assembly PS10 Multifeeder PS22 Photosensitive drum PS47 PS23 Feeding assembly PS52 Copy tray PS12 PS15 Holding tray assembly Holding tray feeding assembly PS8 PS14 PS33 PS17 PS9 PS24 PS37PS31 PS32 PS36 Paper deck PS27 PS25 PS26 Cassette 3 PS30 PS28PS29 Cassette 4 Figure 5-101 5-2 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM II. PICK-UP FROM THE CASSETTE A. Pick-Up Operation See Figure 5-201 for an idea of how cassette pick-up operations are controlled.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 1. Outline The copy paper inside the cassette is lifted by the lifter so that it remains in contact with the pick-up roller. When the pick-up clutch (CL10, CL12) turns ON, the pick-up roller rotates to pick-up copy paper. Then, the pick-up roller releasing solenoid (SL11, SL12) turns ON so that the pick-up roller leaves the paper.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Cassette Lifter Operations The lifter inside the cassette is designed so that the pick-up roller lowers when the cassette is pushed inside the copier, causing the lifter position sensor (P25, PS28) to leave the light-blocking plate. This condition turns ON the lifter motor (M14, M15) to move up the lifter. The lifter motor stops where the lifter position sensor (PS25, PS28) can detect the top surface of the stack of copy paper on the lifter.
CHAPTER 5 PICK-UP/FEEDING SYSTEM Pick-up motor M2 Pick-up roller Feeding rollers Copy paper Separation roller Lifter position lever Lifter position sensor (PS25/PS28) Pick-up roller Paper detecting lever Paper sensor (PS26/PS29) Lifter Cassette open/closed sensor (PS50/51) M Lifter motor (M14 / M15) Figure 5-205 5-6 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM C. Detecting the Size of Copy Paper in the Cassette 1. Outline The size of the copy paper inside the cassette is detected by the paper size sensor installed to the rear of the cassette holder. When the cassette is slid into the cassette holder, the paper size sensor is pushed by the boss on the cassette, enabling the identification of the width and the length of the copy paper.
CHAPTER 5 PICK-UP/FEEDING SYSTEM Width guide (rear) Paper width detecting VR Width guide (front) Paper length sensor unit Cassette Length guide Figure 5-207 3. Markings on the Width Guide Rail The width guide rail inside the cassette has paper size positioning holes marked A through M as shown in Table 5-201. Make use of these holes if the user reports such problems as skew pick-up to make sure if the specified width is the actual width of the copy paper being used.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 4. Paper Sizes The microprocessor on the DC controller PCB identifies the size of paper according to the following table. The paper sizes in Table 5-203 are specified in service mode selected in relation to each group. (The asterisk indicates the paper size specified at time of shipment.
CHAPTER 5 PICK-UP/FEEDING SYSTEM • Paper Types Description Summary Size (length × width mm) A3 A3 (297±1) × (420±1) A4R A4R (210±1) × (297±1) A4 A4 (297±1) × (210±1) A5 A5 (210±1) × (148.5±1) A5R A5R (148.5±1) × (210±1) B4 B4 (257±1) × (364±1) B5R B5R (182±1) × (257±1) B5 B5 (257±1) × (182±1) 11" × 17" 11 × 17 (279±1) × (432±1) LETTER-R LTRR (216±1) × (297±1) LETTER LTR (297±1) × (216±1) STATEMENT STMT (216±1) × (139.5±1) STATEMENT R STMTR (139.
CHAPTER 5 PICK-UP/FEEDING SYSTEM III. PICK-UP FROM THE PAPER DECK A. Outline The paper deck picks up and feeds paper by operating various loads in response to the instructions from the DC controller PCB. The loads used to pick up and feed paper and move up the lifter are driven by the pick-up motor. The service person is expected to register the new size in service mode whenever the deck size has been changed.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 1. Pick-Up Operations The copy paper inside the deck is lifted by the lifter so that the copy paper remains in contact with the pick-up roller. When the deck pick-up clutch (CL14) turns ON, the pick-up roller rotates to pick up copy paper. Then, the deck pick-up roller releasing solenoid (SL4) turns ON so that the pick-up roller leaves the surface of the paper.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Lifter Operations 1. Operations When the deck is pushed inside the pedestal, the deck open/closed sensor (PS38) turns ON and, at the same time, the pick-up roller lowers, causing the deck lifter position sensor (PS31) to leave the light-blocking plate. This condition turns ON the lifter drive motor (M18), and the drive of the pick-up motor (M2) is transmitted to the cable take-up shaft to move up the lifter.
CHAPTER 5 PICK-UP/FEEDING SYSTEM Lifter detecting lever Pick-up roller Feeding roller Lifter position sensor (PS31) Separation roller Copy paper Lifter Deck : Pick-up roller up; i.e., the light-blocking plate of the lifter detecting lever lowers, blocking the lifter position sensor (PS31). : Pick-up roller down; i.e., the light-blocking plate of the lifter detecting lever moves up, leaving the lifter position sensor (PS31). Figure 5-304 2.
CHAPTER 5 PICK-UP/FEEDING SYSTEM C. Detecting Paper for the Deck 1. Detecting the Presence/Absence of Paper The presence/absence of paper inside the deck is detected by the deck paper sensor (PS32). When the deck runs out of copy paper, the paper detecting lever leaves the deck paper sensor (PS32), indicating the absence of paper. Paper sensor Paper detecting lever Figure 5-306 (paper present) Paper sensor Paper detecting lever Figure 5-307 (paper absent) 2.
CHAPTER 5 PICK-UP/FEEDING SYSTEM IV. PICK-UP FROM THE MULTIFEEDER A. Pick-Up Operation The presence of paper in the multifeeder is checked by the multifeeder paper sensor (PS22).
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Detecting the Size of Paper in the Multifeeder When the slide guide of the multifeeder is set to suit the paper width, the variable resistor operating in conjunction with the movement of the slide guide generates a specific output, allowing the DC controller to identify the width of the copy paper. The width identified this way is used to control the lens and blank exposure.
, CHAPTER 5 PICK-UP/FEEDING SYSTEM C. Sequence of Operations (multifeeder) Copy Start key ON INTR SCFW SCRV SCFW SCRV LSTR Multifeeder pick-up solenoid (pick-up direction; SL10) Multifeeder pick-up solenoid (releasing direction; SL10) Multifeeder pick-up clutch (CL7) Registration paper sensor (PS23) Registration roller drive clutch (CL9) Scanner motor (M3) Multifeeder pick-up relay solenoid (SL15) Scanner motor rotation CCW (in reverse) Figure 5-403 5-18 COPYRIGHT © 1997 CANON INC.
, , CHAPTER 5 PICK-UP/FEEDING SYSTEM V. CONTROLLING THE REGISTRATION CLUTCH The registration clutch serves to make sure that copy paper and the image on the drum match at a specific point. In modes other than binding mode, the registration clutch exerts control so that the leading edge of copy paper and that of the image on the drum match. In binding mode, control is as shown in Figure 5-501 so that a binding margin will be created on the copy.
CHAPTER 5 PICK-UP/FEEDING SYSTEM VI. MAKING TWO-SIDED/OVERLAY COPIES (1st SIDE) A. Two-Sided/Overlay Copy Operation The feeding path for copying on the first side of a two-sided/overlay copy is formed when the delivery paper deflecting plate is lifted by the delivery paper deflecting solenoid (SL2). The paper deflecting plate is lifted as soon as the registration clutch (CL9) turns ON.
, CHAPTER 5 PICK-UP/FEEDING SYSTEM 1.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Making Two-Sided Copies (2nd side) When copying on the second side of a two-sided copy, the copy paper is picked up from the stack on the holding tray. When the Copy Start key is pressed, the holding tray separation clutch (CL6) and the holding tray re-pick up roller solenoid (SL6) turn ON to feed one sheet of copy paper to the holding tray registration roller.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 1.
CHAPTER 5 PICK-UP/FEEDING SYSTEM C. Making Overlay Copies (2nd side) 1. Outline The feeding path for copying on the second side of an overlay copy is formed when the holding tray paper deflecting plate is lifted by the holding tray paper deflecting solenoid (SL8). The second side is copied on copy paper picked up from the holding tray. The copy paper is first fed in the direction of the holding tray inlet and then switched back in the direction of the holding tray registration roller.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. Outline of Operations q After pick-up, the copy paper is fed upward by the holding tray paper deflecting plate. Holding tray paper deflecting plate PS14 Figure 5-606 w As soon as the trailing edge of the copy paper leaves the holding tray paper deflecting plate, the holding tray forward clutch (CL5) turns OFF, temporarily stopping the copy paper.
CHAPTER 5 PICK-UP/FEEDING SYSTEM r The copy paper reaches the holding tray registration roller and moves ahead to the registration roller through the holding tray feeding assembly. ly emb ass g n i feed ray ng t i d l o To h PS14 Figure 5-609 5-26 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3.
CHAPTER 5 PICK-UP/FEEDING SYSTEM D. Reversal Delivery The reversal delivery feeding path is formed by the delivery paper deflecting plate lifted by the delivery deflecting plate solenoid (SL2). The delivery deflecting plate operates as soon as the registration clutch (CL9) turns ON, thereby forwarding the paper in the direction of the holding tray.
, , CHAPTER 5 PICK-UP/FEEDING SYSTEM 1.
CHAPTER 5 PICK-UP/FEEDING SYSTEM E. Switching Paper Sizes for Two-Sided/Overlay/Reversal Delivery Copies 1. Movement of the Paper Size Guide When the Copy Start key is pressed in two-sided/overlay/reversal delivery copy mode, the holding tray (X, Y) motor (M8, M9) starts to rotate clockwise, and the paper size guide moves in the direction of the arrow (Figure 5-614).
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. Movement of the Paper Jogging Plate and the Rear Guide Plate When copy paper reaches the holding tray assembly, the paper jogging plate (X direction) and the rear guide plate (Y direction) operate to arrange sheets of paper. The holding tray paper jogging solenoid (SL9) on the holding tray paper guide plate is turned ON/OFF to operate the paper jogging plate to put the sheets of copy paper into order, thereby preventing skew movement for re-pick up.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3. Detecting Copy Paper Copy paper (last sheet) is detected for re-pick up from the holding tray. When copy paper has been stacked on the holding tray, the holding tray re-circulating motor (M7) is driven to place the re-circulating lever on the top sheet of the stack.
CHAPTER 5 PICK-UP/FEEDING SYSTEM F. Re-Pick Up from the Holding Tray When the Copy Start key is pressed for copying on the second side, pick-up/separation operation is initiated.
CHAPTER 5 PICK-UP/FEEDING SYSTEM G. Skipping 1. Outline What is termed skipping is a copy sequence used when making two-sided copies of one-sided originals by skipping every other original, thereby making efficient use of the space in the feeding assembly (holding tray assembly and holding tray feeding assembly) not taken up by copy paper.
3. Skip Mode (copying an even number of originals) 1 2 3 4 RDF 1 2 3 Originals 4 Photosensitive drum Registration rollers Scanner Fixing rollers 3 4 1 4 1 2 3 4 1 2 2 3 2 4 Holding tray 4 4 w The 4th original is picked up and copied. q The Copy Start key is pressed. e The 3rd original is picked up, but is returned to the 4 r The 2nd original is picked up. t The 2nd original is copied. RDF’s original tray without copying (skip operation).
1 2 3 4 2 3 4 2 3 4 1 1 1 3 1 3 2 4 2 4 3 1 3 1 3 1 3 4 2 4 2 4 2 4 2 !9 The 1st original is picked up. @0 The 1st original is copied on the back of the 2nd @1 End. copy paper picked up from the holding tray. (2nd set) Figure 5-620b 5-36 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
4. Skip Mode (copying an odd number of originals) 1 2 3 4 5 RDF 1 2 3 4 Originals Fixing rollers 4 5 1 2 3 4 5 Photosensitive drum Registration rollers Scanner 4 5 1 2 5 1 2 3 3 3 5 Holding tray 5 w The 5th original is picked up and copied. q The Copy Start key is pressed. 5 e The 4th original is returned to the RDF’s original tray r The 3rd original is picked up. t The 3rd original is copied. without copying (skip operation).
5 1 2 3 4 5 1 2 3 4 5 1 2 5 1 2 3 3 4 5 1 3 4 2 4 W 5 1 3 5 4 5 W 2 4 W 5 1 53 1 W 2 4 W 3 5 1 3 5 1 3 4 W 2 4 W 3 3 5 1 3 5 1 3 5 1 3 5 4 W 2 4 W 4 W 2 4 W 1 1 3 @1 The 5th copy paper picked up from the holding tray @2 The 4th original is picked up. @3 The 4th original is copied (2nd set) on the back of the 3rd copy paper picked up from the holding tray. The copy paper is moved through the delivery assembly, reversed, and discharged.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 5. Reverse Delivery Reverse delivery is executed when an odd number of originals are copied in skipping mode or when reverse delivery is selected. In reverse delivery, the copies are turned over for delivery so that they are collated on the copy tray. a. If the copies of an odd number of originals are stacked not using reverse delivery, 1 2 3 Figure 5-622a b.
CHAPTER 5 PICK-UP/FEEDING SYSTEM VII. DETECTING JAMS A. Outline As many as 17 sensors are arranged as shown in Figure 5-701 to check if copy paper is moving properly. The microprocessor reads signals from sensors at such times as programmed to detect jams. When the microprocessor detects a jam, it discharges all sheets moving ahead of the jam and stops the ongoing operation; thereafter, it indicates instructions on jam removal on the control panel.
CHAPTER 5 PICK-UP/FEEDING SYSTEM Function Name Function PS8 Holding tray feeding assembly 1 paper sensor Detects delay/stationary jams. PS23 Registration paper sensor Detects delay/stationary jams. PS9 Holding tray feeding assembly 2 paper sensor Detects delay/stationary jams. PS24 Pick-up vertical path 0 paper sensor Detects delay/stationary jams. PS10 External delivery sensor Detects delay/stationary jams. PS27 Pick-up vertical path 3 paper sensor Detects delay/stationary jams.
CHAPTER 5 PICK-UP/FEEDING SYSTEM The microprocessor identifies any of the following conditions as a jam: a. Paper exists over a sensor at power-on, at the end of wait-up, or during standby. b. Delay jams are detected when copy paper does not reach a specific sensor within a specific period of time. 1. Registration roller delay jam by the registration paper sensor (PS23). 2. Pick-up vertical path feeding delay jam by the pick-up vertical path 1 paper sensor (PS33). 3.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 1. Registration Roller Delay Jam Jam indicator ON Copy Start key ON INTR SCFW SCRV SCFW SCRV 0.4 sec(approx.) Multifeeder pick-up clutch (CL7) Pick-up vertical path 1 sensor (PS33) Pick-up vertical path 0 sensor (PS24) Pick-up vertical path 2 sensor (PS36) Pick-up vertical path 3 sensor (PS27) Pick-up vertical path 4 sensor (PS30) 0.7 sec (approx.) 0.9 sec (approx.) 1.4 sec (approx.) 1.7 sec (approx.) 2.1 sec (approx.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3. Pick-Up Vertical Path Feeding 0/1 Delay Jam Copy Start key ON Jam indicator SCFW PKUPR SCRV SCFW Right deck pick-up clutch (CL14) Jam check Pick-up vertical path 0 paper sensor (PS24) Pick-up vertical path 1 paper sensor (PS33) Normal Error Pick-up motor (M2) Figure 5-704 4.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 5. Pick-Up Vertical Path Feeding 2–4 Delay Jam Copy Start key ON PKUPR Jam indicator ON SCFW SCFW SCRV Left deck pick-up clutch (CL16) Jam check Pick-up vertical path 2 paper sensor (PSS36) Pick-up vertical path 3 paper sensor (PS27) Pick-up vertical path 4 paper sensor (PS30) Normal Error Pick-up motor (M2) Figure 5-706 6.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 7. Fixing Assembly Outlet Delay Jam Jam indicator ON SCFW SCRV SCFW LSTR SCRV Registration paper sensor (PS23) 1.1 sec (approx.) Jam check Fixing assembly outlet paper sensor (PS47) Error Normal Main motor (M1) Figure 5-708 8.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 9. External Delivery Delay Jam Jam indicator ON SCFW SCRV LSTR Fixing assembly outlet paper sensor (PS47) I Jam check External paper sensor (PS10) Error Normal Main motor (M1) I: About 0.25 sec in normal delivery. Varies according to the length of copy paper in reverse delivery. Figure 5-710 10.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 11. Internal Delivery Delay Jam Jam indicator ON SCFW SCRV LSTR Fixing assembly outlet paper sensor (PS47) 0.2 sec (approx.) Jam check Internal delivery paper sensor (PS12) Error Normal Pick-up motor (M2) Figure 5-712 12. Internal Delivery Paper Stationary Jam Jam indicator ON SCFW SCRV LSTR Internal delivery delay jam check I Jam check Internal delivery sensor (PS12) Normal Error Pick-up motor (M2) I: Varies according to the length of copy paper.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 13. Holding Tray Inlet Delay Jam Jam indicator ON SCFW LSTR Internal delivery sensor (PS12) 0.2 sec (approx.) Jam check Holding tray inlet sensor (PS15) Error Normal Pick-up motor (M2) Figure 5-714 14. Holding Tray Inlet Stationary Jam Jam indicator SCFW LSTR Holding tray inlet delay jam check I Jam check Holding tray inlet sensor (PS15) Normal Error Pick-up motor (M2) I: Varies according to the length of copy paper. Figure 5-715 COPYRIGHT © 1997 CANON INC.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 15. Holding Tray Re-Pick Up Delay Jam Copy Start key ON Jam indicator ON INTR SCFW SCRV SCFW Holding tray separation clutch (CL6) Jam check Holding tray pick-up sensor (PS17) Error Normal Pick-up motor (M2) Figure 5-716 16. Holding Tray Registration Delay Jam Copy Start key ON Jam indicator ON INTR SCFW SCRV SCFW Holding tray separation clutch (CL6) I Jam check Holding tray registration paper sensor (PS14) Error Normal Pick-up motor (M2) I: 0.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 17. Holding Tray Registration Stationary Jam Jam indicator Copy Start key ON INTR SCFW SCRV SCFW SCRV Holding tray registration delay jam check I Jam check Holding tray registration paper sensor (PS14) Error Normal Pick-up motor (M2) I: Varies according to the length of copy paper. Figure 5-718 18.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 19. Holding Tray Feeding 1/2 Stationary Jam Jam indicator ON Copy Start key ON INTR SCFW SCRV SCFW Holding tray feeding 1/2 delay jam I Jam check Holding tray feeding assembly 2 paper sensor (PS9) Error Normal Holding tray feeding assembly 1 paper sensor (PS8) Pick-up motor (M2) I: Varies according to the length of copy paper. Figure 5-720 20.
CHAPTER 5 PICK-UP/FEEDING SYSTEM VIII. DISASSEMBLY AND ASSEMBLY This section explains mechanical characteristics and describes how to disassemble/assemble the machine. Be sure to observe the following whenever disassembling/assembling the machine: 1. ! Disconnect the power plug before starting the work. 2. Unless otherwise shown, assemble the parts by reversing the steps given to disassemble them. 3. Identify each screw by type (length, diameter) and location. 4.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. Removing the Pick-Up Roller 1) Open the multifeeder paper guide. 2) Remove the stop rings q from both left and right 1 (two each); then, remove the shutters w and the two rollers e (two each). q w e w q Figure 5-802 Caution: If the multifeeder was used at time of installation or if it was used after a long time, pick-up operation may fail. If such is the case, remove the protection sheet from the sponge roller, and dry wipe the surface of the sponge roller. 3.
CHAPTER 5 PICK-UP/FEEDING SYSTEM • The pick-up roller at the rear is gold. When installing the pick-up roller r to the pick-up assembly, be sure that the round marking t on the side of the roller and the round marking y on the collar (gold) are at the rear of the copier. y t Direction of rotation r Rear (copier) Collar (gold) r Pick-up roller t Marking (roller) y Marking (collar) Figure 5-803a 4. Removing the Separation Roller 1) Remove the multifeeder assembly.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3) Remove the spring e at the front and the rear (one each) and the mounting screw r at the front; then, pull out the positioning pin t, and remove the lower registration roller assembly y. y e r t Figure 5-805 4) Remove the two mounting screws u, and remove the separation roller support i. 5) Remove the joint, and remove the separation roller o. Caution: The bushing at the front will come off when removing the separation roller. Take care.
CHAPTER 5 PICK-UP/FEEDING SYSTEM Caution: The urethane sponge used is pink immediately after foaming and changes to yellow as time passes, faster if exposed to light; it changes from pink to orange and to yellow, showing the general characteristics of urethane sponge; however, such discoloration will not lower its physical properties (performance). Keep in mind that the same type of sponge can take on different colors. Urethane sponge Figure 5-806a 5.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 6. Removing the Multifeeder Paper Sensor 1) Remove the mounting screw q, and remove the solenoid cover w. Remove the mounting screw e. Remove the solenoid r together with the support plate. r e q w Figure 5-808 2) Remove the two mounting screws t, and remove the grip y. y t Figure 5-809 5-58 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3) Remove the ten mounting screws u, and remove the door sensor fixing i and the multifeeder cover o. i u u o u u Figure 5-810 4) Remove the two mounting screws !0, and remove the lower cover !1. !1 !0 Figure 5-811 5) Remove the two mounting screws !2, and remove the guide plate !3. !2 !3 Figure 5-812 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 6) Remove the two mounting screws !4, and remove the sensor mount !5. 7) Remove the sensor from the sensor mount. !5 !4 Figure 5-813 7. Attaching the Side Guide Timing Belt for the Multifeeder Assembly Butt the rack plate of the multifeeder against section A (open state). Move the slide volume in the direction of B, and attach the timing belt to the pulley. Pulley Timing belt Pulley Rack plate Section A B Slide volume Figure 5-814 8.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 9. Adjusting the Pick-Up/Feeding Roller Pressure (multifeeder) If double feeding or pick-up failure occurs during pick-up, adjust the position of the pressure spring of the separation roller: • If double feeding occurs, move the position of the spring hook on side A. • If pick-up failure occurs, move the spring hook on side B. B A Figure 5-816 10.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B. Paper Deck Assembly 1. Removing the Paper Deck Assembly from the Copier 1) Remove the two stoppers q from the left and the right of the paper deck, and remove the paper deck. q Figure 5-820 (left side of paper deck) q Figure 5-820a (right side of paper deck) 5-62 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. Removing the Lifter Cable 1) Remove the paper deck. 2) Remove the two mounting screws q from the top, loosen the two mounting screws w on the side, and remove the deck front cover e. 3) Remove the two mounting screws r from the inside of the deck; then, remove the guide plate t at the front and the rear.
CHAPTER 5 PICK-UP/FEEDING SYSTEM u i y y Figure 5-822a (right) 6) Remove the mounting screw o from the front, thereby freeing the oil damper plate !0. o !0 Figure 5-823 7) Remove the E-ring !1, and remove the end of the cable !2 from the pulley while sliding out the gear and the pulley cover to the front. !2 !1 Figure 5-824 5-64 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 8) While holding the gear and the spring at the rear, remove the E-ring !3; then, remove the cable !5 from the pulley cover !4 while sliding out the pulley cover to the front. 9) Remove the end of the cable from the pulley. !4 !5 !3 Figure 5-825 10) Remove the mounting screw !6 from the cable relay assembly at the front, and remove the fixing !7. !7 !6 Figure 5-826 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 11) Remove the mounting screw !8 from the cable relay assembly at the rear, and remove the fixing !9. !8 !9 Figure 5-827 12) Remove the two mounting screws @0, and remove the grip assembly @1. @0 @1 Figure 5-828 5-66 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 13) Remove the eleven mounting screws @2, and remove the cable together with its mounting plate @3. @2 @3 Figure 5-829 (front) @3 @2 Figure 5-829a (rear) COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3. Changing the Deck Paper Size To change the size of the paper deck, change the position of the guide plate at the front, rear, and rear left. Reference: At time of shipment from the factory, the paper deck is set to A4. You need not perform the following steps if the user uses A4 sheets. (Be sure, however, to attach the paper size label.) 1) Pull out the deck to the front until it stops.
CHAPTER 5 PICK-UP/FEEDING SYSTEM B5 LTR A4 AL LTR B5 3) Install the front, rear, and rear left guide plate w according to the size markings on the base plate, front side plate, and guide plate of the deck. LTR A4 B5 Figure 5-831 Caution: Check to make sure that the front and the rear guide plates are installed as follows: • The plate is installed at a right angle in relation to the base of the deck. • The plate is installed in parallel in relation to the metal plate at the front and the rear.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 4. Adjusting the Registration for the Deck Remove the deck front cover; then, loosen the mounting screws q on both left and right of the deck (2 in total), and slide the latch assembly w back and forth until the specifications indicated in Figure 5-833 are met. w q Figure 5-832 (left) w q Figure 5-832a (right) 0–1.5mm 0 2 4 6 8 10 Figure 5-833 5-70 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM C. Cassette/Paper Deck Pick-Up Assembly 1. Removing the Pick-Up Assembly from the Copier 1) Slide out the paper deck and the cassette from the appropriate holder. 2) Open the upper right door and the lower right door. Caution: You may not be able to remove the pick-up assembly if you try to remove it without first removing the cassette and the paper deck because of the lifter. 3) Remove the mounting screw q and the connector cover w; then, disconnect the two connectors e.
CHAPTER 5 PICK-UP/FEEDING SYSTEM n Orientation of the Pick-Up Roller Install the pick-up roller by reversing the steps used to remove it with the following in mind: • The front and rear pick-up rollers are not interchangeable. • The collar of the front pick-up roller is gold. When installing the pick-up roller q to the pick-up assembly, be sure that the round marking w on the side of the roller and the round marking e on the collar (gold) are toward the front of the machine.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3. 1) 2) 3) 4) Removing the Feeding Roller Remove the pick-up assembly from the copier. Remove the screw w, and remove the feeding roller cover q. Remove the stop ring e from the front of the feeding roller. Remove the stop ring r at the front and the pick-up roller t; then, remove the feeding roller u together with the timing belt y. u e q w r y t Figure 5-837 4.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2) Remove the two mounting screws r, and remove the separation roller assembly t from the joint. t r Figure 5-839 3) Remove the separation roller y from the separation roller shaft mount. Caution: Take care not to drop the pin from the roller.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 5. Adjusting the Separation Roller Pressure If double feeding or pick-up failure occurs during pick-up, adjust the position of the pressure spring of the separation roller: • If double feeding occurs, move the position of the spring hook on side B. • If pick-up failure occurs, move the spring hook on side A. q w A e B r q Feeding roller w Separation roller e Locking lever r Pressure spring Figure 5-841 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 6. Orientation of the Separation Roller Keep the following in mind when replacing the separation roller: Wider groove Narrower groove (rear of copier) (front of copier) Figure 5-842 Caution: If installed in the wrong orientation, the separation roller will interfere with the locking washer. 7.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 8. Position of the Pick-Up Roller Releasing Solenoid of the Deck Adjust the position of the solenoid so that the left end of the right solenoid arm is 57.2 ±0.5 mm from the center of the hole A in the solenoid mount as indicated in Figure 5844. A 57.2–0.5mm Figure 5-844 9.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 0–1.5mm 0 2 4 6 8 10 Figure 5-847 Note: If you have adjusted the front/rear registration for the cassette, you will have to register the basic settings (]4]). D. Pick-Up Vertical Path Roller Assembly 1. 1) 2) 3) Removing the Pick-Up Vertical Path Roller Assembly Open the upper right door and the lower right door. Remove the right deck pick-up assembly/1st cassette pick-up assembly.
CHAPTER 5 PICK-UP/FEEDING SYSTEM E. Registration Feeding Assembly 1. Construction Registration feeding assembly Figure 5-849 2. Removing the Registration Feeding Assembly 1) Open the front cover, and slide out the fixing/feeding unit from the copier. 2) Remove the fixing/feeding front cover, and remove the transfer/separation charging assembly. 3) Remove the two mounting screws q, and remove the right rail support plate w; then, remove the registration feeding assembly pressure spring e.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 5) Disconnect the connector y, and remove the registration feeding assembly u from the fixing/feeding unit. u r t y Figure 5-851 3. Removing the Registration Roller (upper rubber roller) 1) Loosen the two set screws q on the stopper of the electromagnetic clutch at the rear. 2) Remove the spring w, E-ring e, spacer r, bushing t, and bearing y. w rty e q Figure 5-852 5-80 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 3) Remove the spring u, E-ring i, spacer o, and bearing !0, and bushing !1. 4) Remove the pre-transfer upper front guide !2 and remove the registration roller (upper rubber roller) !3. !2 !3 o u !0 !1 i Figure 5-853 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM F. Feeding Assembly 1. Construction Feeding assembly Figure 5-854 2. Removing the Fixing/Feeding Unit 1) Remove the front door, open the hopper assembly, and remove the power supply switch assembly cover; then, close the hopper assembly. 2) Slide out the fixing/feeding unit. 3) Remove the left and right mounting screws q (1 each), and remove the fixing/feeding unit stopper w.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 4) Lift the fixing/feeding unit off the copier. Caution: Take care. The fixing/feeding unit weighs about 15 kg. 3. 1) 2) 3) Removing the Feeding Belt Lift the fixing/feeding unit off the copier. Remove the fixing/feeding front cover. Remove the E-ring q, spacer w, and bearing e at the front. we q Figure 5-857 4) Remove the E-ring e and two mounting screws r at the rear. r e Figure 5-858 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 5) Remove the E-ring t, gear y, and pin u at the rear. 6) Remove the E-ring i and bearing o at the rear. io yu t Figure 5-859 7) Remove the three harness retainers !0 and the two edge saddles !1; then, free the connector !2 from the harness, and remove the screw !3 to remove the cord guide !4. !1 !2 !4 !3 !0 Figure 5-860 8) Remove the two screws !5, and remove the handle support plate !6. !5 !6 Figure 5-861 5-84 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 9) Remove the two mounting screws !7 at the front and the rear; then, remove the feeding belt unit !8. !7 !8 Figure 5-862 (front) 10) Remove the screw @0, and remove the feeding upper plate S !9; thereafter, remove the feeding belt @1 and the postcard belt @2. @1 !9 (front) @2 @0 Figure 5-863 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM G. Holding Tray Assembly 1.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. 1) 2) 3) Removing the Holding Tray Assembly from the Copier Open the front cover. Remove the fixing/pre-feeding cover. Slide out the holding tray assembly to the front and out of the copier. 3. Removing the Holding Tray Re-Pick Up Assembly 1) Slide out the holding tray assembly to the front and out of the copier.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 4) Remove the three mounting screws i (front), and disconnect the two connectors o while lifting the holding tray re-pick up assembly; then, remove the holding tray repick up assembly !0. i !0 o i Figure 5-867 (rear) 4. 1) 2) 3) 4) Removing the Holding Tray Registration Paper Sensor Open the front cover. Slide out the holding tray assembly to the front and out of the copier. Remove the holding tray re-pick up assembly.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 5. 1) 2) 3) Removing the Re-Pick Up Roller Open the front cover. Slide out the holding tray assembly to the front. Remove the mounting screw q (1 each), and remove the two pick-up rollers w. w q w Figure 5-869 6. 1) 2) 3) 4) Removing the Holding Tray Driver PCB Open the front cover. Slide out the holding tray to the front and then out of the copier. Turn over the holding tray assembly. Remove the two mounting screws q, and remove the holding tray driver PCB cover w.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 5) Remove the two mounting screws e, and disconnect the nine connectors r (J201, J202, J203, J204, J205, J207, J208, J209, J210); then, remove the holding tray driver PCB t. e r t Figure 5-871 7. 1) 2) 3) Removing the Holding Tray Y Motor Slide out the holding tray assembly to the front, and remove the copier. Turn over the holding tray assembly. Remove the two mounting screws q, and remove the right rail w. w q q Figure 5-872 5-90 COPYRIGHT © 1997 CANON INC.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 4) Turn over the holding tray assembly. 5) Remove the E-ring e, flange r, and belt t. t e r Figure 5-873 6) Remove the two mounting screws y, and turn over the holding tray Y motor assembly u; then, disconnect the connector 1. y u y Figure 5-874 7) Remove the two mounting screws, and remove the holding tray Y motor. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 8. 1) 2) 3) Removing the Y Motor Home Position Sensor Slide the holding tray to the front and out of the copier. Remove the right rail, and turn over the holding tray. Remove the mounting screw q, and remove the Y motor home position sensor assembly w. w q Figure 5-875 9. Removing the Holding Tray Inlet Assembly 1) Remove the mounting screw q, and remove the inlet assembly upper front cover w. q w Figure 5-876 5-92 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2) Remove the mounting screw e, and remove the inlet assembly upper rear cover r. r e Figure 5-877 3) Remove the two mounting screws t, and remove the inlet assembly y. t y t Figure 5-878 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 10. Removing the Feeding Roller/Separation Belt Assembly 1) Slide out the holding tray assembly to the front. 2) Remove the holding tray inlet assembly. 3) Remove the mounting screw q. q Figure 5-879 4) While opening the left cover w, remove the feeding roller/separation belt assembly e. w e Figure 5-880 5-94 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 11. Removing the Feeding Roller 1) Remove the feeding roller/separation belt assembly. 2) Remove the stop ring q and the bushing w at the front. q w Figure 5-881 3) Remove the stop ring e, gear r, and bushing t at the rear. 4) Remove the roller y from the feeding roller assembly. y rt e Figure 5-882 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 12. Removing the Separation Belt Assembly 1) Remove the feeding roller/separation belt assembly. 2) Remove the stop ring q and the bushing w at the front. q w Figure 5-883 3) While lifting the front of the separation belt assembly, shift it to the rear to remove. 4) Remove the belt from the separation belt assembly. 13. Adjusting the Pressure of the Separation Roller of the Holding Tray Turn the separation roller adjusting roll so that the distance to the shaft is 32.7 ±0.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 14. Position of the Holding Tray Paper Deflecting Plate Drive Solenoid Install the solenoid so that its stroke (gap between the rubber silencer and the end of the solenoid) is 5.0 ±0.3 mm. 5.0– 0.3m m Figure 5-885 15. Removing the Side Guide Plate 1) Mark the position of the side plate assembly with a scribe. (See Figure 5-894.) 2) Remove the two mounting screws q, and disconnect the two connectors; then, remove the side guide plate assembly w.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 16. Removing the Holding Tray X Motor 1) Remove the side guide plate assembly. 2) Remove the mounting screw, and remove the motor cover. 3) Remove the two mounting screws q, and disconnect the connector; then, remove the motor w. q w Figure 5-887 17. Removing the Holding Tray Re-Circulating Motor 1) Remove the side guide plate assembly. 2) With the paper jogging guide plate fully open, mark the position of the paper guide plate with a scribe. (See Figure 5-893.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 4) Remove the mounting screw r, and remove the motor assembly t. t r Figure 5-889 18. Removing the Holding Tray Paper Jogging Solenoid 1) Remove the side guide plate. 2) With the paper jogging guide plate fully open, mark the position of the paper guide plate assembly with a scribe. 3) Remove the three mounting screws q, and disconnect the connector w; then, remove the front guide plate assembly e. e q q w Figure 5-890 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 4) Remove the mounting screw r, and remove the cover t. r t Figure 5-891 5) Remove the two mounting screws y, two grip rings u, and spring pin i; then, remove the solenoid o. i o y u Figure 5-892 5-100 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 19. Installing the Holding Tray Paper Jogging Guide Plate Assembly Mark the position of the paper jogging guide plate assembly with a scribe, and install it along the marking. Figure 5-893 20. Installing the Holding Tray Assembly Side Guide Plate Assembly Mark the position of the side guide plate assembly with a scribe, and install it along the marking. Figure 5-894 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 21. Attaching the Timing Belt for the Holding Tray Assembly Paper Jogging Guide Plate Butt the rack plate of the paper jogging guide plate against section A (open state), and attach the timing belt. A Figure 5-895 22. Position of the Holding Tray Paper Jogging Solenoid When installing the solenoid, be sure that the stroke (between the rubber silencer and the end of the solenoid) is 1.5 ±0.3 mm. 1.5–0.3mm Figure 5-896 5-102 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV.
CHAPTER 5 PICK-UP/FEEDING SYSTEM H. Holding Tray Feeding Assembly 1. Removing the Holding Tray Feeding Assembly from the Copier 1) Open the front cover, and slide out the holding tray feeding assembly to the front. 2) Remove the three mounting screws q, and remove the holding tray feeding front cover w. q q w Figure 5-897 3) Remove the five mounting screws e and the two metal fixings r; then, remove the holding tray feeding assembly t from the rail.
CHAPTER 5 PICK-UP/FEEDING SYSTEM 2. Removing the Sensor from the Holding Tray 1) Open the front cover, and slide out the holding tray feeding assembly to the front. 2) Remove the mounting screw q and the metal fixing w; then, remove the holding tray feeding sensor cover e from the bottom of the holding tray feeding assembly. r we q Figure 5-899 Caution: Do not open the holding tray upper feeding guide more than it is designed to open; otherwise, the stopper r will be damaged.
CHAPTER 6 FIXING SYSTEM This chapter explains the principles used to fuse toner images to transfer medium in view of the functions of electrical and mechanical units and in relation to their timing of operation. It also shows how these units may be disassembled/assembled and adjusted. I. BASIC OPERATIONS ........................6-1 A. Outline ...........................................6-1 B. Fixing Drive Assembly...................6-2 C. Controlling the Fixing Temperature .................................
blank page
CHAPTER 6 FIXING SYSTEM I. BASIC OPERATIONS A. Outline The upper and lower rollers of the fixing assembly and the delivery roller are driven by the main motor (M1) through clutches. (See Figure 6-101.) The upper roller is equipped with two built-in heaters; the sub heater is turned on during WMUP after power-on, and the main heater is turned on/off during WMUP and thereafter for temperature control. (See Figure 6-102.
CHAPTER 6 FIXING SYSTEM B. Fixing Drive Assembly If a jam occurs in the fixing delivery assembly, the DC controller PCB generates the fixing drive stop signal to turn ON the fixing drive stop solenoid (SL3), thereby immediately stopping the fixing roller. The belt used to clean the upper fixing roller is taken up gradually when the cleaning belt take-up arm is moved up and down by the cleaning belt drive solenoid (SL14).
CHAPTER 6 FIXING SYSTEM C. Controlling the Fixing Temperature The surface temperature of the upper fixing roller is monitored by the main thermistor (TH1), and the output of the thermistor is sent to the microprocessor. Using the output, the microprocessor varies the main heater drive signal (MHRD) and the sub heater drive signal (SHRD) to control the fixing temperature. The rear of the copier’s upper fixing roller is equipped with a sub thermistor (TH2) to monitor overheating.
CHAPTER 6 FIXING SYSTEM The copier uses the six types of control shown in Tables 6-101 and -102 in relation to the time that has elapsed from power-on and according to the ambient temperature.
CHAPTER 6 FIXING SYSTEM w Copy Speed Down Sequence The copier makes as many as 45 copies per minute normally. To ensure proper fixing, however, the sheet-to-sheet gap is increased if the main thermistor (TH1) on the upper fixing roller detects the following surface temperature.
CHAPTER 6 FIXING SYSTEM n Fxing Assembly Temperature Control Sequence 60 min after power-on with fixing roller surface temperature 75°C Power switch ON 195 C WMUP Copy Start key ON About 10 sec after end of CNTR INTR CNTR1 CNTR2 LSTR STBY INTR CNTR1 CNTR2 AER SCFW SCRW SCRF SCRV LSTR STBY Main heater (H1) Sub heater (H2) Main motor (M1) Wait indication ON in green ON in orange (212 C) (210 C) (210 C) 210 C (205 C) 205 C (205 C) (200 C) (200 C) 200 C (195 C) 195 C Mode
, CHAPTER 6 FIXING SYSTEM 60min Copy Start key ON STBY Auto shut-off ON Pre-Heat key ON INTR CNTR1 CNTR2 AER SCFW SCRV SCFW SCRV LSTR STBY *1 Main heater (H1) Sub heater (H2) Main motor (M1) ON Pre-Heat key indicator Flashes 210 C 205 C 200 C 195 C Mode H (17 C~) , Mode M/L (12~17 C, ~12 C) 10% power saving 180 C 25% power saving 155 C 50% power saving 110 C *1: May be varied in service mode. Figure 6-104 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 6 FIXING SYSTEM D. Reciprocating Mechanism for the Main Thermistor (TH1) The main thermistor (TH1) is moved back and forth over a distance of 12 mm in the axial direction of the upper fixing roller to prevent damage to the roller. The reciprocating cam is supplied with drive from the cleaning belt drive solenoid (SL14) through a one-way arm.
CHAPTER 6 FIXING SYSTEM E. Reciprocating Mechanism for the Upper Separation Claw The upper separation claw is moved back and forth over a distance of 3 mm in the axial direction of the upper fixing roller to prevent damage to the roller. Separation claw Upper fixing roller 3mm Separation claw Reciprocating cam Main motor M1 Internal delivery roller Figure 6-106 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 6 FIXING SYSTEM F. Fixing Heater SSR Error Detection Circuit The safety circuit for the copier’s fixing heater SSR uses the following signals to identify an error: 1. Fixing main heater drive signal (MHRD) 2. Main heater ON detection signal (MHOND) Figure 6-107 shows the main heater only, but the sub heater is controlled in the same way. Heater ON The CPU causes the SSRON signal to go ‘0’, and the MHRD signal goes ‘1’ to turn ON the heater.
COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 6 FIXING SYSTEM G. Locking the Fixing/Feeding Unit If a jam straddles the fixing/feeding unit and the holding tray unit when the copier stops because of a jam, i.e., paper exists over the internal delivery sensor (PS12), the main motor (M1) and the fixing/feeding unit locking solenoid (SL13) are turned ON for about 3 sec. This way, the locking lever is lowered from the fixing/feeding unit to the rear of the holding tray unit.
CHAPTER 6 FIXING SYSTEM H. Error Detection Circuit LA1 Lamp regulator 1. Outline Figure 6-109 is a control block diagram of the error detection circuit, which has the following functions: a. monitoring the activation of the scanning lamp (LA1). b. monitoring the activation of the fixing heaters (main, H1; sub, H2). c. monitoring the rotation of each motor in normal reading and stream reading. Each of these functions is executed by the gate arrays of the DC controller PCB.
CHAPTER 6 FIXING SYSTEM 2. Scanning Lamp Error Activation Detection Circuit The gate array is designed to receive the scanning lamp ON signal (CVRON) and the scanning lamp ON detection signal (CVRACTIVE). It detects an error if the scanning lamp is ON in the absence of the scanning lamp ON signal. In such cases, the gate array informs the master CPU of the error detection of the scanning lamp and, at the same time, generates the power switch OFF signal.
CHAPTER 6 FIXING SYSTEM 3. Fixing Heater Error Activation Detection Circuit The gate array generates the fixing heater ON signal (SSRON) and receives the fixing heater ON detection signal (SSR ACTIVE). An error is detected if the fixing heater is ON in the absence of the fixing heater ON signal. In such cases, the gate array informs the master CPU of the error activation of the fixing heater and, at the same time, generates the power switch OFF signal.
CHAPTER 6 FIXING SYSTEM II. DISASSEMBLY AND ASSEMBLY This section explains mechanical characteristics and describes how to disassemble/assemble the machine. Be sure to observe the following whenever disassembling/assembling the machine: 1. ! Disconnect the power plug before starting the work. 2. Unless otherwise shown, assemble the parts by reversing the steps given to disassemble them. 3. Identify each screw by type (length, diameter) and location. 4.
CHAPTER 6 FIXING SYSTEM 3. Removing the Fixing Cleaning Belt Take-up roller Feeding roller Figure 6-203 1) Slide out the fixing/feeding unit from the copier. 2) Remove the feeding/feeding front cover. 3) Remove the mounting screw q, and remove the fixing upper cover w. w q Figure 6-204 4) Remove the two mounting screws e used to hold the fixing cleaning belt assembly in place, and open the top of the fixing cleaning belt assembly r in the upward direction. r e Figure 6-205 COPYRIGHT © 1997 CANON INC.
CHAPTER 6 FIXING SYSTEM 5) Remove the cleaning belt feeding roller t and the cleaning roller take-up roller y while pushing them to the rear. y t Figure 6-206 Caution: When cleaning the silicone oil pan, be sure to remove the silicone oil collecting at the bottom of the cleaning belt feeding roller. 6-18 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 6 FIXING SYSTEM 4. Installing the Fixing Cleaning Belt Install the fixing cleaning belt by reversing the steps used to remove it with the following in mind: 1) Wind the cleaning belt two to three times around the cleaning belt take-up roller q. When doing so, be sure that the arm guide plate w is outside the take-up roller. Check that the area where the roller comes into contact is impregnated with oil.
CHAPTER 6 FIXING SYSTEM 5. 1) 2) 3) 4) Removing the Upper Fixing Unit Slide out the fixing/feeding unit from the copier. Remove the fixing/feeding front cover. Remove the fixing upper cover. Open the fixing delivery assembly q. q Figure 6-209 5) Remove the two mounting screws w, and remove the flywheel mount e. e w Figure 6-210 6-20 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 6 FIXING SYSTEM 6) Remove the E-ring r, and remove the flywheel t. t r Figure 6-211 7) Remove the fixing cleaning belt, and clean the silicone oil pan; then, remove the two mounting screws y and the two harness retainers u, and disconnect the three connectors i. y u i Figure 6-212 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 6 FIXING SYSTEM 8) Open the upper feeding unit o slightly, and remove it in the upper left direction; then, place it on a desk. Caution: Draw out the silicone oil in advance from the silicone oil pan to avoid spilling it during work. o Figure 6-213 6. 1) 2) 3) 4) 5) Removing the Fixing Heater Slide out the fixing/feeding unit from the copier. Remove the fixing/feeding front cover. Open the fixing delivery assembly. Remove the flywheel.
CHAPTER 6 FIXING SYSTEM 8) Free the two cables r at the front of the heater from the wire saddle t. w q e t r Figure 6-214 9) Remove the two fastons y from the rear. y Figure 6-215 10) Pull out the main heater and the sub heater from the fixing assembly while taking care not to damage them.
CHAPTER 6 FIXING SYSTEM 7. Installing the Fixing Heater Install the fixing heater by reversing the steps used to remove it with the following in mind: a. Do not touch the surface of the heater. b. Install both heaters so that the side with the longer wire is toward the front. c. Install the main heater (800W) on the right and the sub heater (400 W) on the left when viewing them from the front; however, install the main heater only to a 220/240V model, which does not have a sub heater. d.
CHAPTER 6 FIXING SYSTEM 9) Remove the two stoppers t (front, rear). t Figure 6-218 (rear) t Figure 6-218a (front) 10) Remove the upper roller unit y while being careful of the thermistor and the thermal switch. y Figure 6-219 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 6 FIXING SYSTEM 11) Remove the C-ring u at the front, and remove the gear i. 12) Remove the C-ring o at the rear, and remove the gear !0. 13) Slide out the bearing !1 and the bushing !2 at the rear toward the front. 14) Slide out the bearing !3 and the bushing !4 at the front of the upper roller toward the front. !3 o !0 !1 !4 i u !2 Figure 6-220 9. Installing the Upper Fixing Roller Install the upper roller by reversing the steps used to remove it.
CHAPTER 6 FIXING SYSTEM 10. Removing the Thermal Switch 1) Slide out the fixing/feeding unit from the copier. 2) Remove the fixing/feeding front cover. 3) Remove the flywheel. 4) Remove the fixing upper cover and the stay cover. 5) Remove the fixing cleaning belt. Remove the mounting screw q, and remove the oil pan w. 6) Remove the mounting screw e and the faston r, and remove the thermal switch assembly holder t. 7) Remove the four mounting screws y, and remove the thermal switch assembly.
CHAPTER 6 FIXING SYSTEM 6) Remove the mounting screw e, and shift the thermistor assembly r to the right to remove. e r Figure 6-224 7) Remove the mounting screw t and two retaining springs y, and remove the thermistor u. t y u y Figure 6-225 12. Removing the Lower Separation Claw Assembly 1) Slide out the fixing/feeding unit from the copier. 2) Remove the fixing/feeding front cover. 3) Remove the flywheel. 4) Remove the upper fixing cover.
CHAPTER 6 FIXING SYSTEM 6) Remove the two mounting screws q, and remove the lower separation claw assembly w together with the support plate. q w q Figure 6-226 7) Remove the tension spring, and remove the lower separation claw assembly. 13. Removing the Lower Roller 1) Slide out the fixing/feeding unit from the copier. 2) Remove the fixing/feeding front cover. 3) Remove the flywheel. 4) Remove the fixing cleaning belt and fixing upper cover; then, clean the silicone oil pan.
CHAPTER 6 FIXING SYSTEM 14. Removing the Upper Separation Claw 1) Slide out the fixing/feeding unit from the copier. 2) Open the fixing delivery assembly, and release the spring q; then, remove the upper separation claw w. q w Figure 6-228 15. Adjusting the Nip (tightening the pressure adjusting nut) The nip width is correct if it is as indicated in Table 6-201. Otherwise, turn the pressure adjusting nut.
CHAPTER 6 FIXING SYSTEM a. Measuring the Nip Wait 15 min after the end of the copier’s warm-up, and make 20 copies before measuring the nip. 1) Place A3 copy paper, and select A3. 2) Open the copyboard cover. 3) Start service mode (*4*); using the >> key, select nip measurement mode ‘NIP’. 4) Press the * user mode key. The above will cause the copier to pick up paper and become ready for measurement as in Figure 6-229.
CHAPTER 6 FIXING SYSTEM 17. Removing the Sub Thermistor (TH2) Unit 1) Slide out the fixing/feeding unit. 2) Remove the screw w, and remove the fixing assembly upper cover q; then, remove the screw r, and remove the harness cover e. q w e r Figure 6-231 3) Remove the screw y, and remove the thermistor (TH2) unit t. y t t Figure 6-232 Note: It is difficult to replace the sub thermistor on its own in the field. Be sure to replace it on a unit basis (thermistor unit t in Figure 6-232.
CHAPTER 6 FIXING SYSTEM B. Delivery Assembly 1. Construction Delivery upper guide (fixing/delivery assembly) Figure 6-233 2. Removing the Delivery Upper Guide (fixing delivery assembly) 1) Open the front cover, and slide out the fixing/feeding unit to the front and then out of the copier. 2) Remove the fixing/feeding front cover. 3) Remove the mounting screw q; then, pull out the pin w, and remove the delivery upper guide e. e w q Figure 6-234 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 6 FIXING SYSTEM 3. Removing the Fixing/Feeding Locking Assembly 1) Slide out the fixing/feeding unit to the front and out of the copier. 2) Remove the two mounting screws q and the E-ring w; then, disconnect the connector e, and remove the fixing/feeding locking assembly r. e w r q Figure 6-235 4. 1) 2) 3) Removing the External Delivery Roller Slide the fixing/feeding unit to the front and out of the copier. Remove the fixing/feeding front cover.
CHAPTER 6 FIXING SYSTEM 4) Remove the fixing/feeding locking assembly. 5) Remove the two E-rings e, gear r, torque limiter t, and bushing y at the front. 6) Remove the E-ring u and the bushing i at the rear; then, remove the external delivery roller o. o y e t e r Figure 6-237 (front) i u Figure 6-237a (rear) COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 6 FIXING SYSTEM 5. Removing the External Delivery Sensor and the Internal Delivery Sensor 1) Remove the external delivery roller. 2) Remove the two mounting screws q, external delivery sensor assembly, and internal delivery sensor assembly w. w q Figure 6-238 6. Removing the Fixing Assembly Outlet Paper Sensor Assembly 1) Slide out the fixing/feeding unit to the front, and remove the front cover and the upper fixing unit. (See p. 6-20.) 2) Remove the lower fixing separation claw assembly. (See p.
CHAPTER 6 FIXING SYSTEM 7. Removing the Internal Delivery Roller 1) Open the front door, and slide out the fixing/feeding unit to the front and out of the copier. 2) Remove the fixing/feeding front cover. 3) Remove the fixing upper unit. (See p. 6-20.) 4) Remove the fixing lower separation claw assembly. (See p. 6-28.) 5) Remove the E-ring q, gear w, and parallel pin e at the front. 6) Remove the E-ring r and bushing t. r t q we Figure 6-240 7) Remove the E-ring y and the gear at the rear.
blank page
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS This chapter shows the copier's external parts, and explains the principles used for the copier's various control mechanisms in view of the functions of electrical and mechanical units and in relation to their timing of operation. It also shows how these units may be disassembled/assembled and adjusted. I. II. III. IV. CONTROL PANEL .............................7-1 A. Outline ...........................................7-1 B. Operation.............................
blank page
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS I. CONTROL PANEL A. Outline The copier’s control panel consists of the control panel controller PCB, 320 × 240dot liquid crystal display panel unit, transparent touch switch panel, and key switch panel, and it provides the following functions: q Data communication w LCD processing e LCD contrast automatic adjustment and manual adjustment r Touch switch input t Key switch input B. Operation 1.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2. LCD Processing The microprocessor on the DC controller PCB sends commands to the LCD controller as necessary; in response, the LCD controller interprets these commands and executes them. The LCD controller serves to turn ON/OFF the indicators according to the appropriate instructions.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 3. LCD Contrast Automatic Adjustment The control panel controller PCB is equipped with a function that adjusts the changes in the contrast caused by changes in temperature. The control panel controller PCB is equipped with a thermistor (TH911) to monitor the temperature inside the control panel. The voltage supplied to the LCD is varied according to the changes in resistance of the temperature to ensure optimum contrast on the LCD.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 4. Touch Switch Input The keys of the touch switch panel and the control panel controller PCB are connected as shown in Figure 7-102. The touch switch panel consists of bonded glass and film sheets between which pacers are provided; it has keys in a pattern of 15 columns and 20 rows. When the film surface is pressed by a finger, the contact between the film and the glass causes electrical continuity.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS II. FANS The copier is equipped with six fans, serving to exhaust ozone, collect stray toner, and cool the parts. Table 7-201 shows the function of each fan together with its filter and fan orientation. FM8 FM5 FM7 FM6 FM3 FM2 Figure 7-201 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS Notation Name Orientation Filter Function FM2 Air exhaust fan Blowing FM3 Fixing heat exhaust fan Drawing Prevents overheating inside the machine by the fixing heater. Exhausts silicone oil vapors. FM5 Developing fan Drawing Draws in stray toner from around the developing assembly. FM6 Feeding fan Drawing Draws copy paper to the feeding belt. FM7 Cleaner fan Drawing Prevents internal overheating.
COPYRIGHT © 1997 CANON INC. Feeding fan (FM6) Cleaner fan (FM7) Air exhaust fan (FM2) Fixing heat exhaust fan (FM3) Developing fan (FM5) Scanner cooling fan (FM8) WMUP Power switch ON INTR CNTR AER SCFW SCRV SCFW SCRV LSTR : Half-speed rotation : Full-speed rotation Figure 7-203 Fan Operation Sequence 10 min (approx.) INTR CNTR LSTR WMUPR STBY Copy Start key ON 15 min (approx.) 10 min (approx.) STBY Power switch OFF CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS III. POWER SUPPLY A. Outline of Power Supply Figure 7-301 is a block diagram showing the distribution of power inside the copier.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS B. Power Supply Circuit The copier’s DC power supply provides eight DC outputs: 38 VU, 24 VU, 24 VR, 24 VA2, 24 VH, 24 VA1, 12 VU, and 5 VR. Its AC power supply consists of the following: a. AC direct input line without a switch; b. input line through a power switch (SW1); and c. input line through both power switch (SW1) and door switch (SW2).
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS Power plug connected Power switch ON Power switch OFF Power switch disconnected Fan rotation 15 min (approx.) Remote signal (RTM) 38VU output timing 24VU output timing 24VR output timing 24VA2 output timing 5VR output timing 12VU output timing 24VA1 output timing 24VU1 output timing 24VU2 output timing Figure 7-302 7-10 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS As a means of protection for the power supply PCB, the AC power supply input side is equipped with a fuse and each DC circuit is equipped with a built-in overcurrent protection circuit. If an overcurrent flows because of a short circuit in the power supply line, the protection circuit will turn on to turn OFF the output of the power supply unit. If such happens, disconnect the power plug, and remove the cause of activation; then, turn ON the power supply.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS IV. DISASSEMBLY AND ASSEMBLY This section explains mechanical characteristics and describes how to disassemble/assemble the machine. Be sure to observe the following whenever disassembling/assembling the machine: 1. ! Disconnect the power plug before starting the work. 2. Unless otherwise shown, assemble the parts by reversing the steps given to disassemble them. 3. Identify each screw by type (length, diameter) and location. 4.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS t q e w r q Upper inside cover (2) w Fixing/feeding assembly front cover (3) e Connector cover (1) r Power switch assembly cover (3) t Hopper cover Figure 7-402 Remove the covers as necessary to clean, inspect, or repair the inside of the machine. Those covers that may be removed through mere removal of mounting screws on their own are omitted from the discussions. 1.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2) Pull out the pin r in downward direction. r Figure 7-404 3) Hold the front door t, and pull it out in upward direction at an angle. t Figure 7-405 7-14 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2. Removing the Inside Upper Cover 1) Remove the front door, and shift the fixing/feeding lever; then, slide out the fixing/feeding unit. 2) Remove the three mounting screws q, and remove the inside upper cover w. w q Figure 7-406 3. Removing the Fixing/Feeding Unit Front Cover 1) Open the front door, and slide out the fixing/feeding unit.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 4. Removing the Rear Cover 1) Remove the nine screws q, and remove the rear cover w. q q q q w q Figure 7-408 5. Sliding Out the Hopper Assembly 1) Open the front door, and open the hopper cover q. Remove the three mounting screws w and the connector cover e, and disconnect the connector; then, slide the hopper r to the front, and turn it. r w e q Figure 7-409 Caution: When installing the hopper assembly, be sure to check that the connector is connected.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 6. 1) 2) 3) 4) Removing the Process Unit Open the front door. Remove the developing assembly. (See p. 4-55.) Remove the hopper assembly. (See p. 4-60.) Slide out the fixing feeding assembly, and place the drum protection sheet on the registration roller assembly. 5) Disconnect the four connectors q, and remove the two mounting screws w. q w w Figure 7-410 6) Insert the drum rotating tool e into the slit r in the drum shaft.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS r Drum shaft e t Figure 7-411 7) Slide out the process unit y until it stops. y Figure 7-412 7-18 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 8) Hold the grip of the process unit as shown Figure 7-413, and remove it. Right hand Left hand Figure 7-413 7. Installing the Process Unit Install the process unit by reversing the steps used to remove it while keeping the following in mind: 1) Place the process unit while aligning it along the front and rear guide plates q of the left rail. For the right rail, be sure to place the process unit on the L-shaped stay.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2) After inserting the process unit into the copier, match the slit of the drum shaft and the slit of the drum using the drum rotating tool e. Then, insert the drum fixing t, and insert the mounting screw r into the center hole in the drum rotating tool. r e t Figure 7-415 B. Control Panel 1. Removing the Control Panel from the Copier 1) Remove the mounting screw from the upper left cover, and remove the two stepped screws (M3x6) from the standard white cover.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 3) Remove the three mounting screws e; then remove the right upper cover r. r e Figure 7-417 4) Remove the mounting screw from the control panel t. t Figure 7-418 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 5) Open the front door, and remove the three mounting screws y; then, remove the connector cover u, and remove the connector. Open the hopper i. y i u Figure 7-419 Caution: When installing the hopper assembly, check to make sure that the connector is connected. 6) Shift the fixing feeding assembly releasing lever o from vertical to horizontal, and slide out the fixing feeding assembly !0. !0 o Figure 7-420 7-22 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 7) Remove the three mounting screws !1, and remove the inside upper cover !2; then, push in the fixing feeding assembly. !2 !1 Figure 7-421 8) Remove the three mounting screws !3, and remove and turn over the control panel. Caution: Take care not to damage the surface of the control panel by the copier’s chassis. !3 Figure 7-422 9) Disconnect the three connectors (J911, J915, J955). COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2. Removing the Control Panel PCB 1) Remove the four mounting screws q, and slide the rear cover w to the right to remove. w q Figure 7-423 3. Removing the Touch Panel 1) Remove the five mounting screws q, and remove the center support plate w. q w q q Figure 7-424 7-24 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2) Remove the three flat cables e (J912, J913, J916) of the control panel CPU PCB, and disconnect the connector r (J956) of the inverter PCB. 3) Remove the five mounting screws t, and remove the touch panel y. y t e r t Figure 7-425 4. Removing the Control Panel CPU PCB 1) Remove the five mounting screws q, and remove the control panel right support plate w and the control panel CPU PCB e. e q w q Figure 7-426 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2) Remove the thirteen mounting screws r; then, remove the keypad PCB t. t r Figure 7-427 C. Door Switch Assembly 1. 1) 2) 3) 4) Removing the Front Door Switch Assembly Open the front door. Remove the inside upper cover. Remove the control panel. Remove the two mounting screws q, and remove the door switch assembly w. q w Figure 7-428 7-26 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2. Removing the Multifeeder Door Switch Assembly 1) Remove the front door, and remove the hopper assembly. 2) Remove the three mounting screws q, and remove the power supply switch assembly cover w. q w Figure 7-429 3) Remove the three mounting screws e, and remove the multifeeder door sensor/multifeeder door catch assembly r. e r Figure 7-430 4) Remove the sensor from the multifeeder door sensor/multifeeder door catch assembly. 3.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS D. Fan Unit 1. Removing the Scanner Cooling Fan 1) Open the front door, and remove the inside upper cover. (See p. 7-15.) 2) Disconnect the three connectors q (J1, J2, J3) from the potential control PCB, and disconnect also the connector w (J921) from the service switch PCB. 3) Remove the five mounting screws e, and disconnect the connector r; then, remove the scanner cooling fan unit t together with the potential controller PCB. w q e e r e t Figure 7-431 2.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 3. Removing the Fixing Air Exhaust Fan 1) Remove the rear cover. 2) Remove the three mounting screws q, and disconnect the connector w; then, remove the fixing heat exhaust fan e. q w e q Figure 7-433 4. Removing the Developing Fan 1) Remove the rear cover. 2) Disconnect the connector q (J301) from the high-voltage transformer PCB, and remove the three mounting scrwes w; then, shift the high-voltage transformer assembly e.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 3) Remove the two mounting screws r, and disconnect the connector t; then, remove the developing fan y. r t r y Figure 7-435 5. 1) 2) 3) Removing the Cleaner Fan Remove the rear cover. Remove the three mounting screws, and shift the high-voltage transformer PCB. Remove the two mounting screws q, and disconnect the connector w; then, remove the developing fan assembly e. q w e Figure 7-436 7-30 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 6. 1) 2) 3) 4) Removing the Feeding Fan Remove the rear cover. Remove the three mounting screws, and shift the high-voltage transformer PCB. Remove the cleaner fan. Remove the two mounting screws q, and disconnect the connector w; then, remove the feeding fan e. q w e Figure 7-437 E. Removing the Counter Assembly 1) Open the front door, and remove the inside upper cover; then, remove the mounting screw from the control panel.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS F. Main Motor Assembly 1. 1) 2) 3) Removing the Main Motor Remove the rear cover. Remove the high-voltage PCB. Remove the spring q; loosen the tension pulley, remove the four mounting screws w, detach the belt at the tip of the main motor, and remove the main motor e. q w e Figure 7-439 G. Fixing/Waste Toner Drive Assembly 1. Construction Figure 7-440 7-32 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2. Removing the Waste Toner Bottle 1) Remove the mounting screw, remove the lower right cover, and slide out the waste toner bottle to the side of the multifeeder. 3. Removing the Fixing/Waste Toner Drive Assembly 1) Open the front door, and slide out the process unit, fixing/feeding unit, and holding tray assembly about 10 cm from the copier. 2) Remove the rear cover. 3) Remove the high-voltage transformer PCB. 4) Remove the cleaner fan and the feeding fan.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 8) Remove the mounting screw y of the DC controller PCB, and disconnect the three connectors u (J113, J114, J115) and two connectors i. i y u Figure 7-443 9) Remove the four mounting screws o, and remove the fixing/waste toner drive assembly !0 together with the waste toner feeding assembly. Caution: When removing the fixing/waste toner drive assembly, stop up the tip of the waste toner pipe with a ball of paper or the like to prevent spilling of waste toner.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS H. Drive Assembly (drum/developing assembly) 1. Construction Figure 7-445 2. Removing the Drive Assembly 1) Open the front door, and slide out the process unit, fixing/feeding unit, and holding tray assembly about 10 cm from the copier. 2) Remove the rear cover. 3) Remove the high-voltage transformer PCB and the high-voltage transformer assembly. 4) Remove the waste toner bottle. 5) Remove the cleaner fan, feeding fan, and developing fan.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 8) Remove the seven mounting screws e, and remove the drive unit r. e r e Figure 7-447 I. Vertical Path Drive Assembly 1. Construction Figure 7-448 7-36 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2. 1) 2) 3) 4) Removing the Vertical Path Drive Assembly Remove the lower right cover. Remove the rear cover. Remove the waste toner bottle. Remove the five mounting screws q, and remove the rear right grip assembly w. q w q Figure 7-449 5) Remove the three mounting screws e, and remove the waste toner bottle support plate r. e r e Figure 7-450 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 6) Remove the two mounting screws, and remove the harness guide 2 y. y t Figure 7-451 7) Remove the four mounting screws u, and disconnect the connector i; then, remove the vertical path drive assembly o. i o u u Figure 7-452 7-38 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS J. Pick-Up Drive Assembly 1. Construction Figure 7-453 2. Removing the Pick-Up Drive Assembly 1) Open the front door, and slide out the process unit, fixing/feeding unit, and holding tray assembly about 10 cm from the copier. 2) Remove the rear cover. 3) Remove the high-voltage transformer PCB and the high-voltage transformer assembly. 4) Remove the waste toner bottle. 5) Remove the cleaner fan, feeding fan, and developing fan.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 10) Remove the eight mounting screws e, and disconnect the two connectors r; then, remove the pick-up drive assembly. e r e e e Figure 7-455 K. Duplexing Unit Drive 1 Assembly 1. Construction Figure 7-456 2. Removing the Duplexing Unit Drive 1 Assembly 1) Open the front door, and slide out the holding tray assembly about 10 cm from the copier. 2) Remove the rear cover. 3) Remove the DC controller PCB. 7-40 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 4) Remove the spring q of the tensioner, and remove the timing belt. 5) Remove the four mounting screws w, and remove the duplexing unit drive 1 assembly e. q w e w Figure 7-457 L. Lifter Drive Assembly 1. Construction Figure 7-458 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 2. Removing the Lifter Assembly 1) Open the front door, and slide out the holding tray assembly about 10 cm from the copier. 2) Remove the rear cover. 3) Remove the waste toner bottle. 4) Remove the rear right grip assembly. 5) Remove the three mounting screws q, and remove the waste toner bottle support plate w. q w q Figure 7-459 6) Disconnect the connector e, and remove the three screws r; then, remove the lifter drive assembly t.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS M. Cassette Pick-Up Drive Assembly 1. Construction Figure 7-461 2. Removing the Cassette Pick-Up Drive Assembly 1) Open the front door, and slide out the holding tray assembly about 10 cm from the copier. 2) Remove the rear cover. 3) Remove the waste toner bottle. 4) Remove the waste toner bottle support plate. 5) Remove the rear right grip assembly. 6) Remove the DC controller PCB, and detach the timing belt.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS 8) Remove the five mounting screws e, and remove the cassette pick-up drive assembly r. r e e e Figure 7-463 7-44 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS N. Attaching the Drive Belt Attach the drive belt through the gears and rollers as indicated in Figure 7-464.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS O. DC Controller PCB 1. 1) 2) 3) Removing the DC Controller PCB Remove the rear cover. Disconnect the connector from the DC controller PCB. Remove the five mounting screws q used to hold the mount in place, and remove the DC controller PCB together with its mount w. q w q Figure 7-465 Caution: The DC controller PCB is equipped with a battery (BAT101). Observe the following, as shorting both ends of the battery will cause overheating: 2.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS P. DC Power Supply Assembly 1. Removing the DC Power Supply Assembly 1) Remove the upper left cover and the lower left cover. 2) Remove the nine mounting screws q, and remove the DC power supply protection plate w. w q Figure 7-466 3) Disconnect the nine connectors (J303, J304, J305,J306, J308, J309, J311, J312, relay connector). 4) Remove the two mounting screws e, and remove the DC power supply PCB r together with its mount.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS Q. High-Voltage Transformer Assembly 1. 1) 2) 3) Remove the High-Voltage Transformer Assembly Remove the rear cover. Disconnect the four connectors q (J201, J202, J203, J301). Remove the three mounting screws w, and remove the PCB assembly e. w q e w Figure 7-468 4) Remove the two fastons r, and disconnect the connector t; then, remove the two mounting screws, and remove the transformer assembly u.
CHAPTER 7 EXTERNALS/AUXILIARY MECHANISMS R. Power Supply Input Assembly 1) 2) 3) 4) Remove the rear cover. Remove the upper left cover and the lower left cover. Remove the four mounting screws q. Disconnect the four connectors w, and remove the power cord mount e. w q e q Figure 7-470 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
blank page
CHAPTER 8 INSTALLATION This chapter introduces requirements for the site of installation, and shows how the copier may be installed using step-by-step instructions. I. II. SELECTING THE SITE ......................8-1 UNPACKING AND INSTALLATION....8-3 A. Unpacking......................................8-4 B. Installing the Scanner....................8-6 C. Installing the Fixing Assembly .......8-7 D. Installing the AP Kit and the Charging Assembly .......................8-9 E. Installing the Copy Tray......
blank page
CHAPTER 8 INSTALLATION I. SELECTING THE SITE Keep the following in mind when selecting the site of installation; if possible, pay a visit to the user’s before the delivery of the machine: 1. There must be a power outlet that satisfies the required power ratings and that may be used exclusively for the machine. 2. The temperature must be between 7.5° and 32.5°C (45.5 and 90.5°F) and the humidity, between 5% and 85% RH.
CHAPTER 8 INSTALLATION Exhaust Wrong 1 Figure 8-102 Wrong 2 Figure 8-103 8-2 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION II. UNPACKING AND INSTALLATION When a piece of metal is brought in from a cold to warm place, droplets of water tend to form on its surface. This phenomenon is known as condensation, and a copier suffering from condensation can generate blank copies. If you are installing a machine brought in from a cold place, leave it alone without unpacking for at least one hour before starting the installation work. Note: A.
CHAPTER 8 INSTALLATION A. Unpacking No. Work 1 Unpack the copier, and remove the plastic sheet. 2 Push in the grip (accessory) into the front of the pick-up side. Checks/remarks Caution: Keep the stopper of the grip facing downward; otherwise, it may slip off when the copier is lifted. 3 Hold the grips (front, rear) of the copier’s pick-up side, and lift the copier slightly to remove the two pads. Remove the corrugated cardboard (base plate).
CHAPTER 8 INSTALLATION No. Work 5 Check to make sure that the two adjusters (2 at front) on the copier’s bottom are shifted up and released. Checks/remarks Adjusters 6 Slide out the two slope plates from the skids. 7 Turn over the slope plates, and insert fixing pins (1 each) through the pin holes of the skids and the pin holes in the slope plates. • Hold the copier’s grips (front, rear), and put if off the skid plates by sliding it along the slope plates.
CHAPTER 8 INSTALLATION B. Installing the Scanner No. Work 1 Remove the copier’s taping. 2 Open the RDF. 3 Remove the scanner fixing (packing tape). (keep the metal fixing for possible relocation of the machine.) 8-6 COPYRIGHT © 1997 CANON INC. Checks/remarks Remove the protection tape of the size index and the protection sheet of the copyboard glass. CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION C. Installing the Fixing Assembly No. Checks/remarks Work 1 Open the front door. 2 Shift the fixing/feeding assembly releasing lever in the direction of the arrow (left) to release the transfer/separation charging assembly. Slide out the fixing/feeding unit to the front. Fixing/feeding assembly Releasing lever 3 Remove the tag and the separation claw releasing block of the fixing/feeding assembly.
CHAPTER 8 INSTALLATION No. Work 5 Remove the two fixing nip releasing screws. Checks/remarks Screw (rear) Screw (front) 6 8-8 Close the fixing/delivery assembly. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION D. Installing the AP Kit and the Charging Assembly No. Work 1 Remove the screw from the releasing lever of the fixing feeding assembly. While pushing the rear of the releasing lever lock shaft (on the side of the fixing feeding inside), shift the releasing lever to remove the lever. Remove the screw, and remove the fixing knob; remove the three screws, and remove the fixing feeding cover.
CHAPTER 8 INSTALLATION Checks/remarks No. Work 3 Install the fixing/feeding assembly front cover with three screws. Install the fixing knob and the releasing lever; then, put the lever in release state (lever on left). Push the fixing/feeding assembly inside the machine. 4 Open the multifeeder door and the upper right door, and remove the screw from the black tape (door stopper) of the front door. (This is to prevent the front door from closing the hopper after the hopper has been opened.
CHAPTER 8 INSTALLATION No. Work 9 Disconnect the connector, and loosen the screw; then, while moving the charging assembly fixing in the direction of the arrow (upper right), fix it in position with a screw. Using alcohol, clean the primary charging assembly. Checks/remarks Connector Screw Primary charging assembly 10 Disconnect the connector, and remove the screw. Take out the pretransfer charging assembly. Using alcohol, clean the pre-transfer charging assembly.
CHAPTER 8 INSTALLATION No. Work 12 Insert the drum rotating tool into the slit in the drum shaft. Holding the rotating assembly so that the drum will not turn in counterclockwise direction, remove the drum fixing screw and the drum fixing (from the slit). Caution: 1. If the drum is let to rotate in counterclockwise direction, the cleaning blade will not come into contact correctly with the drum, possibly causing cleaning faults.
CHAPTER 8 INSTALLATION No. Work 15 Insert the process unit into the machine, and match the slit in the drum axis and the slit in the drum using the drum rotating tool. Then, while holding the drum in place by the drum rotating tool with the drum fixing (slit member), insert a screw in the tool. Checks/remarks Rotating tool Slit member Screw Drum shaft Slit Drum shaft slit 16 Remove the drum protection sheet from the fixing feeding assembly; then, insert the fixing assembly into the copier.
CHAPTER 8 INSTALLATION No. Work 19 Remove the two screws, and remove the cover from the copier’s rear right (bottom). The drum protection sheet will be used when servicing the process unit. Remove the dirt, if any, and keep it near the waste toner case at the rear together with the drum rotating tool. (Keep the drum rotating tool in the hole in the grip on the waste toner case top together with the waste toner case cap.) Caution: Do not roll the drum protection sheet.
CHAPTER 8 INSTALLATION E. Installing the Copy Tray 1. Replacing the Delivery Gear If you are not installing a sorter or a stapler sorter to the copier, i.e., if you are using the copy tray, you must replace the delivery gear with the gear (black) which is used for copy tray. If you are installing a sorter or a stapler sorter to the copier, check to make sure that the gear is as indicated in step 1, and do NOT perform any of the steps. No.
CHAPTER 8 INSTALLATION 2. Replacing the Leaf Springs of the Delivery Roller If you are not installing a sorter or a stapler sorter to the copier, i.e., if you are using the copy tray, you must replace the leaf springs (2 pcs.) of the delivery roller with the leaf springs (identified by a blue label; with weak spring pressure) which are used for the copy tray.
CHAPTER 8 INSTALLATION F. Checking the Developing Assembly No. Work 1 Open the multifeeder tray, and remove the screw from the black tape. 2 Checks/remarks Screw Remove the screw, and slide the developing assembly locking unit in the direction of the arrow (rear) to remove. Screw 3 Take out the developing assembly from the shipping box. By turning the developing assembly cylinder gear by hand, check the cylinder for scratches.
CHAPTER 8 INSTALLATION Checks/remarks No. Work 5 Insert the developing assembly locking unit from the right side (rear), and insert it to the left (front) when it is horizontal. Tighten the screw on the developing assembly locking unit. Screw 6 Install the black tape multifeeder with a screw. 7 Close the multifeeder door. 8-18 of COPYRIGHT © 1997 CANON INC. the CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION G. Installing the Pick-Up Assembly No. Work 1 Open the multifeeder. Holding the grip on the multifeeder, open the multifeeder door. Shift the lever in the direction of the arrow, and take out the pick-up roller releasing spacer. Checks/remarks Spacer Lever 2 Slide out the right deck/cassette half way, and open the upper right cover and lower right cover; then, remove the pick-up roller releasing spacers of the holders 3 and 4 of the paper deck.
CHAPTER 8 INSTALLATION H. Supplying Toner No. Work 1 Check the sides (left/right) of the mouth for the toner bottle. Checks/remarks Left 2 Shake the toner bottle well about ten times. 3 Open the hopper cover, and fit the boss on the tip of the toner bottle in the groove of the toner supply mouth. • The toner supply mouth and the toner bottle will become locked in position. 8-20 COPYRIGHT © 1997 CANON INC. Right q w CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION No. Work 4 Holding the copier’s shutter (black) on the right side of the toner supply mouth of the hopper, pull it to the right until it stops. 5 Pull the shutter on the toner bottle side to the right. 6 When toner has dropped from the toner bottle to the hopper, lightly tap on the bottom of the toner bottle to make sure all toner has moved into the hopper. COPYRIGHT © 1997 CANON INC. Checks/remarks CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION No. Work 7 Holding the shutter of the toner bottle, push it to the left until it stops. 8 Holding the copier’s shutter, push it to the left until it stops. 9 Push the copier’s shutter up to the marking nt on the hopper assembly. • This will unlock the toner bottle. Checks/remarks Marking 8-22 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION No. Work 10 Pull the toner bottle in the upper left direction to remove. 11 Close the hopper cover. 12 Remove the connector face plate for the RDF. 13 Connect the RDF’s connector (male) into the copier’s connector (female). COPYRIGHT © 1997 CANON INC. Checks/remarks CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION I. Setting Images/Functions and User Mode Checks/remarks No. Work 1 Connect the power plug to the power outlet, and insert the door switch actuator into the door switch assembly of the front door. 2 Slide out the holding tray and the holding tray feeding assembly; then, check to make sure that there is no foreign matter and the parts are free of damage. 3 Slide out the paper deck and the cassette to the front, and remove the packing material.
CHAPTER 8 INSTALLATION No. Work Checks/remarks 10 After the WAIT period is over, start service mode by inserting a paper clip or the like into the hole in the copier’s upper left inside cover. • Close the front door so that light will not enter the inside of the machine. • This mode will operate for a maximum of about 10 min, supplying toner from the hopper to the developing assembly. Select ‘TONER-S’ (*4*), and press the user mode key *.
CHAPTER 8 INSTALLATION No. Work Checks/remarks 12 When toner has been supplied, place the Test Sheet on the copyboard, and make copies to check the image. Toner may fall from the drum separation claw to cause soiled images on the first ten or so copies; such a condition will disappear when more copies have been made. Check to make sure that paper is picked up from all sources of paper. • Check to make sure that there is no abnormal sound.
CHAPTER 8 INSTALLATION No. Work 19 Put the grip attached to the front of the pick-up side under the grip on the pick-up rear side. Install the three covers (large) and one cover (small) of the grip assembly. 20 If you are installing options such as a sorter, complete this step and install them as instructed in their respective Installation Procedures. 21 Fill out the service sheet. COPYRIGHT © 1997 CANON INC. Checks/remarks CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION III. RELOCATING THE MACHINE Go through the steps in the table when relocating the machine by truck or other means of transportation. Step Work Checks 1 Make a copy in Direct. 2 Remove all copy paper from the paper deck and all cassettes. 3 Turn off the power switch, and disconnect the power plug. Make sure that the lens is inside the lens hood. 4 Fix the No. 2 mirror mount in place with the locking plate from the left cover side. Make sure that the No.
CHAPTER 8 INSTALLATION IV. INSTALLING THE CONTROL CARD V 1) Open the RDF, and remove the three mounting screws q and the three fixings (RDF catches) w. q w q w Figure 8-401 2) Remove the three screws e from the front side on the copier’s upper right cover. e Figure 8-402 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION 3) Remove the screw r from the control panel. r Figure 8-403 4) Open the front door, and open the hopper cover. Remove the three screws t and the connector cover y, and disconnect the connector; then, slide the hopper assembly u to the front, and rotate it. u t y Figure 8-404 8-30 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION 5) Shift the fixing feeding assembly releasing lever i from vertical to horizontal position, and slide out the fixing feeding assembly o. o i Figure 8-405 6) Remove the three screws !0, and remove the upper inside cover !1; then, push in the fixing feeding assembly. !0 !1 Figure 8-406 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION 7) Remove the three screws !2; then, remove the control panel, and turn it over. Caution: Take care not to damage the surface of the control panel by the copier’s chassis. !2 Figure 8-407 8) Remove the five tapping screws !3, and slide the PCB cover !4 5 mm to the right to remove the control panel PCB cover. !3 !4 !3 Figure 8-408 8-32 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION 9) Remove the control card inlet face plate !5. !5 Figure 8-409 10) Remove the face plate screw !6. !6 Figure 8-410 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION 11) Place the sheet !7 over the hole in the control panel (display opening of the Control Card V). !7 Figure 8-411 12) Remove the protection sheet from the display of the Control Card V. 13) Fix the Control Card V in place on the control panel using four screws !8. (Slide a card into and out of the Control Card V, and fix the Control Card V in place where the card may be moved easily.) !8 Figure 8-412 8-34 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION Check to make sure that the connector !9 of the printer is centered over the hole. !9 Figure 8-413 14) Install the grounding wire @0 of the Control Card V as indicated in Figure 8-414. @0 Figure 8-414 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 8 INSTALLATION 15) Disconnect the shorting connector @1 shown in Figure 8-415. @1 Figure 8-415 16) Connect the 4P connector of the Control Card V and the 4P connector of the copier. Caution: Be sure to lead the connector wire through the harness retainer so that it will not come into contact with the scanner cable and the drive pulley. 17) Remove the protection sheet from the control panel of the Control Card V.
CHAPTER 8 INSTALLATION 19) Install the control panel to the copier. 20) Install the hopper and the cover to the copier. Caution: Check to make sure that the connector is connected when installing the hopper assembly. 21) Turn ON the copier, and check the operation of the Control Card V. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
blank page
CHAPTER 9 MAINTENANCE AND SERVICING This chapter provides tables of periodically replaced parts and consumables/durables and scheduled servicing charts. I. II. PERIODICALLY REPLACED PARTS ...9-1 CONSUMABLES AND DURABLES ...9-2 A. Copier ............................................9-2 B. RDF-H1 .........................................9-3 COPYRIGHT © 1997 CANON INC. III. IV. SCHEDULED SERVICING.................9-4 SCHEDULED SERVICING CHART ...9-6 A. Copier ............................................
blank page
CHAPTER 9 MAINTENANCE AND SERVICING I. PERIODICALLY REPLACED PARTS Some parts of the machine must be replaced on a periodical basis to ensure a specific level of machine performance; they must be replaced regardless of external deterioration or damage. Plan the replacement so that it coincides with scheduled servicing. as of March 1997 No. 1 2 Parts Parts No.
CHAPTER 9 MAINTENANCE AND SERVICING II. CONSUMABLES AND DURABLES Some parts of the machine may require replacement because of wear or damage over the period of warranty. Replace them as necessary. A. Copier as of March 1997 No. 1 Parts Multifeeder pick-up roller Parts No.
CHAPTER 9 MAINTENANCE AND SERVICING No. Parts Parts No.
CHAPTER 9 MAINTENANCE AND SERVICING III. SCHEDULED SERVICING Caution: 1. Provide scheduled servicing every 250,000 copies. 2. Check the service record before leaving the office, and take replacement parts as necessary. 3. If you have cleaned charging wires, check to make sure that they are completely dry before installing them. No. Work Checks Remarks 1 Meet the person in charge. Check the general conditions. 2 Record the counter reading. Check faulty copies. 3 Make test copies.
CHAPTER 9 MAINTENANCE AND SERVICING Work No. Remarks Checks 7 Clean the transfer guide. • Transfer guide plate (upper, lower) • Transfer/separation charging guide rail 8 Check and clean the cleaning assembly. • Magnet roller (check) • Separation claw (clean) • Side scraper (check) 9 Clean the separation feeding assembly. • Feeding belt After cleaning, be sure to install the photosensitive drum. 10 Clean the fixing delivery assembly.
CHAPTER 9 MAINTENANCE AND SERVICING IV. SCHEDULED SERVICING CHART Caution: Do not use solvents/oils other than those specified. A. Copier : Clean : Replace : Lubricate : Adjust : Check Interval Unit Part Instal- every every every every lation 250,000 500,000 750,000 1,000,000 Use a blower brush; for the No. 5 mirror, use the mirror cleaning tool. No. 1 through No.
CHAPTER 9 MAINTENANCE AND SERVICING Interval Part Unit Remarks Instal- every every every every lation 250,000 500,000 750,000 1,000,000 Blade Apply toner. *Switch edges. * Cleaner Remove paper lint. Side scraper assembly Separation claw Inlet guide Fixing assembly Fixing cleaning belt Take it up at time of installation. Thermistor Oil receptacle Separation claw (upper, Delivery assembly lower) Waste toner Waste toner case (upper) (lower) Remove as necessary.
CHAPTER 9 MAINTENANCE AND SERVICING B. RDF-H1 : Clean : Replace : Lubricate : Adjust : Check Interval No. Part every every 100,000 200,000 1 Feeding belt 2 Original sensor (S1) 3 Pre-registration sensor (S2) 4 Separation flapper (front, middle, rear) 5 Pick-up crescent roller 6 Separation belt 7 Feeding roller 8 Registration roller 9 Reversing roller/roll 10 Delivery roller/roll o Actual copies mode. e r y u i 9-8 Remarks COPYRIGHT © 1997 CANON INC.
CHAPTER 10 TROUBLESHOOTING This chapter provides tables of maintenance/inspection, standards/adjustments, and identification (image fault/malfunction). I. II. III. IV. V. VI. MAINTENANCE AND INSPECTION..10-3 A. Image Adjustment Basic Procedure....................................10-3 B. Points to Note for Scheduled Servicing......................................10-4 STANDARDS AND ADJUSTMENTS ...............................10-5 A. Image Adjustment .......................10-5 B. Exposure System ........
blank page
Guide to Troubleshooting Tables The troubleshooting procedures in this manual are prepared in the form of tables, rather than flow charts. Study the following for an idea of how to consult the tables. EX. AC power is absent. Cause/Fault Step Power plug 1 Is the power plug connected to the outlet? NO Connect the plug. Covers 2 Are the front door and delivery cover closed properly? NO Close the door and cover.
blank page
I. MAINTENANCE AND INSPECTION A. Image Adjustment Basic Procedure Make adjustments in non-AE and at copy density 5. Making Pre-Checks Adjusting the Solid Black Density Adjusting the Density Slope Clean the charging wire. Check the height of the charging wire. Is there a difference in density between front and rear? Is the density of gray scale No. 10 optimum? NO YES Is it lighter at the rear? Make two to three copies of the Test Sheet. Check the copy paper and the transfer system.
B. Points to Note for Scheduled Servicing Note: • Make thorough checks to be sure that the block (front, rear) is free of melting, thermal deformation, cracking, and yellowing because of leakage. If an abnormal condition is noted, replace it with a new part without delay. • Inspect and clean both outside and inside of the block (front, rear). • Do NOT use a cloth coated with metal powder. • Do NOT use a moist cloth. Dry wipe with lint-free paper, and use alcohol.
CHAPTER 10 TROUBLESHOOTING II. STANDARDS AND ADJUSTMENTS A. Image Adjustment 1. Adjusting the Leading Edge Margin Select ‘LE_BLANK’ in service mode ( ] 3 ] ). Make adjustments so that the leading edge non-image width is 4.5±1.5 mm when the Test Sheet is copied in Direct. (unit: 0.1 mm) 4.5–1.5mm Figure 10-201 2. Adjusting the Leading Edge Non-Image Width (registration) Select ‘REGIST’ in service mode ( ] 3 ] ). Make adjustments so that the leading edge margin is 4.5±1.5 mm when the Test Sheet is copied.
CHAPTER 10 TROUBLESHOOTING a. Paper Deck Adjusting plate Screw Figure 10-204a Adjusting plate Screw Figure 10-204b 10-6 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING b. Cassette Adjusting Plate Screw Figure 10-205 Note: If you have adjusted the front/rear registration for the cassette, you will have to register the paper width basic value. (p. 10-53) 4. Adjusting the Left/Right Registration (holding tray position; 2nd side of a twosided/overlay copy) Loosen the two screws, and move the position of the guide plate of the holding tray assembly so that the distance between the edge of the copy image and that of the copy paper is 0 ±2.
CHAPTER 10 TROUBLESHOOTING 5. Adjusting the Left/Right Margin Make adjustments so that the image left/right margin is 2.75 ±2.5 mm when the Test Sheet is copied in Direct mode. You must have adjusted the “left/right registration” before making this adjustment. a. Front Margin Adjustment (left margin) Select ‘F-BLANK’ in service mode ( ] 3 ] ), and change the setting. Increasing the setting increases the front margin. (unit: 0.1 mm) b.
CHAPTER 10 TROUBLESHOOTING 6) Place a newspaper on the copyboard, and close the copyboard cover. 7) Press the ] user mode key once. The scanning lamp will turn ON, and auto adjustment will be executed. AE_ADJ : 0 ← (]:START) Changes to ‘0’. 8) Press the Reset key twice to end service mode. 7. Adjusting the AE Slope After executing AE auto adjustment, make a copy of a dark original (e.g., newspaper).
CHAPTER 10 TROUBLESHOOTING B. Exposure System 1. Adjusting the Scanner Home Position Make copies, and remove the control panel; then, check to make sure that the line in section A on the electrode (front) of the No. 1 mirror mount is within section B of the hole in the glass support (front). Otherwise, change the setting of ‘BRAKE_SC’ in service mode ( ] 3 ] ) so that the line in section A is within section B. Electrode mount (front) No.
CHAPTER 10 TROUBLESHOOTING 2. Routing the Scanner Drive Cable Route the cable as indicated by numbers q through i, and perform “adjusting the wire tension” and “adjusting the mirror position” shown on the next page. 1 2 6 3 Steel ball 2 4 Wind eight times. 6 8 Fix in place temporaily. 7 5 Figure 10-209 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 3. Adjusting the Tension of the Scanner Cable Be sure to perform the following whenever you have installed the scanner cable. 1) Remove the two mounting screws, and remove the left cover. 2) Loosen the fixing screw on the tension spring bracket. 3) Turn the tension adjusting screw so that the value is as indicated: • Turn the tension adjusting screw A so that the reading of the spring gauge is 200 ±50 g when the middle of the scanner cable is pulled about 10 mm.
CHAPTER 10 TROUBLESHOOTING 5. 1) 2) 3) 4) 5) 6) Cleaning the Mirror (No. 5 mirror) Remove the copyboard glass. Remove the lens hood. Remove the mirror guide plate. Move the lens stage in Enlarge direction. Remove the screw, and remove the mirror cleaning tool. As shown, butt the mirror cleaning tool q against the No. 5 mirror, and clean the mirror by moving the tool in the direction of the arrows. (At this time, take care so that the No.
CHAPTER 10 TROUBLESHOOTING 7. Installing the Lens X Direction Drive Belt Install the lens X direction drive belt with a mounting screw w where the lens X direction drive motor q has lowered on its own weight. q w Own weight Figure 10-215 10-14 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING C. Image Formation System 1. Routing the Grid for the Primary Charging Assembly 1) Loosen the two mounting screws used to fix the left/right shielding plate in place. 2) Loosen the three mounting screws used to fix the motor unit in place at the front. Screws Figure 10-216 3) Loosen the mounting screw, and move it in the direction shown in Figure 10-217; then, fix it temporarily. Screw Figure 10-217 4) Free a length of about 5 cm from a 0.1mm-dia.
CHAPTER 10 TROUBLESHOOTING 5) Cut the twisted wire (excess wire) by a nipper. 6) Hook the loop on stud A shown in Figure 10-218. 7) When you have routed the wire for 31 runs, lead it through section B, give it a half turn, and put it between the washer and the motor unit; then, wind it about once (clockwise) around the mounting screw, and tighten the mounting screw. Stud A Screw Figure 10-218 8) Cut the excess charging wire with a nipper. 9) Tighten the mounting screw you loosened in step 3).
CHAPTER 10 TROUBLESHOOTING 2. Adjusting the Height of the Charging Wire Height of charging wire Charging assembly Range Primary 7.5+1.5 -0mm 7.5+1.5 -0mm ±1mm A No adjusting mechanism Pre-transfer 9.5+1.0 -0mm B Transfer 10.2–0.5mm ±2mm C Separation ±2mm A B D A:16.2–0.5mm B:14.9–0.5mm Table 10-201 Reference: The height (position) of the primary and transfer/separation charging wire may be adjusted by turning the screw behind the charging assembly.
CHAPTER 10 TROUBLESHOOTING 3. 1) 2) 3) 4) 5) Adjusting the Blank Exposure Lamp Place the Test Sheet on the copyboard. Select A4. Make a copy, and check to make sure that the left/right registration is correct. Make a copy in Direct. Check the image, and measure the non-image width shown in Figure 10-219. Paper size Left/right non-image width All paper sizes 2.75±2.
CHAPTER 10 TROUBLESHOOTING 4. Position of the Roller Electrode Roller electrode Scraper Figure 10-221 Side seal Reference attachment 5. Position of the Side Seal in the Cleaning Assembly Be sure that the side seal does not extend inside the cleaner housing. Figure 10-222 6. Cleaning the Cleaner Side Scraper Perform the following when replacing the side scraper and, thereafter, for every 500,000 copies made. 1) Remove the cleaning blade.
CHAPTER 10 TROUBLESHOOTING 3) Remove the coating of toner from the surface of the magnet roller. (Use a sheet of copy paper shaping it like the letter U.) Side scraper (rear) Toner guide roller 30~40mm Magnet roller (rear) A 4~8mm Remove waste toner. Figure 10-223 Remove waste toner. 30~40mm 4~8mm A (front) Toner guide roller Magnet roller Side scraper (front) Figure 10-224 4) Turn the magnet roller clockwise (viewing from the front).
CHAPTER 10 TROUBLESHOOTING D. Pick-Up/Feeding System 1. Orientation of the Pick-Up Roller (cassette/deck) Install the pick-up roller by reversing the steps used to remove it with the following in mind: • The front and rear pick-up rollers are not interchangeable. • The collar of the front pick-up roller is gold.
CHAPTER 10 TROUBLESHOOTING 2. Orientation of the Separation Roller (cassette/deck) Keep the following in mind when replacing the separation roller. Wider groove Narrower groove (rear of copier) (front of copier) Figure 10-226 3. Orientation of the Feeding Roller (cassette/deck) When installing the feeding roller assembly q to the cassette/deck pick-up assembly, make sure that the belt pulley w is toward the front of the machine.
CHAPTER 10 TROUBLESHOOTING 4. Orientation of the Pick-Up Roller (multifeeder) Install the pick-up roller by reversing the steps used to remove it with the following in mind: • The front and rear pick-up rollers are not interchangeable. • The collar of the front pick-up roller is silver. When installing the pick-up roller q to the pick-up assembly, make sure that the round marking w is toward the front of the machine.
CHAPTER 10 TROUBLESHOOTING 5. Orientation of the Feeding Roller (multifeeder) When installing the pick-up roller q to the multifeeder pick-up assembly, make sure that the belt pulley w and the marking ‘5’ e are toward the front of the machine. e 5 5 w (front) q Figure 10-229 6.
CHAPTER 10 TROUBLESHOOTING 7. Adjusting the Pressure of the Separation Roller (holding tray) Turn the separation adjusting roller so that the distance between the shafts are 32.7 ±0.1 mm. 32.7–0.1mm Figure 10-231 8. Adjusting the Pressure of the Pick-Up/Feeding Roller (multifeeder) When pick-up double feeding or pick-up failure occurs during pick-up operation, adjust the position of the pressure spring of the separation roller. • If double feeding occurs, change the position of the spring hook to side A.
CHAPTER 10 TROUBLESHOOTING 9. Positioning the Pick-Up Roller Releasing Solenoid (cassette) Make adjustments so that the distance from the bottom of the pick-up unit in each cassette holder to the bottom end of the bushing of the roller support A is 36 ±0.5 mm when the plunger of the pick-up releasing roller is drawn as shown. 36–0.5 q A Figure 10-233 10.
CHAPTER 10 TROUBLESHOOTING 11. Adjusting the Pick-Up Roller Releasing Solenoid (multifeeder) Make adjustments by sliding the solenoid in the direction of A so that the distance between the shutter q and the shutter plate w is 0.4 ±0.2 mm when the solenoid is pulled. , A 0.4–0.2mm 0.4–0.2mm Figure 10-235 w q Figure 10-235a 12. Routing the Timing Belt for the Multifeeder Assembly Side Guide Butt the rack plate of the multifeeder against section A (open state).
CHAPTER 10 TROUBLESHOOTING 13. Adjusting the Position of the Delivery Paper Deflecting Drive Solenoid Temporarily fix the delivery paper deflecting plate drive solenoid with a screw; then, push down the lever q in the direction of A to push in the delivery paper deflecting plate drive solenoid w in the direction of B, and tighten the mounting screw e. A B q e w Figure 10-237 14.
CHAPTER 10 TROUBLESHOOTING 15. Installing the Holding Tray Assembly Side Guide Assembly Mark the position of the side guide plate assembly with a scriber for installation later. Figure 10-239 16. Installing the Holding Tray Paper Jogging Guide Assembly Mark the position of the paper jogging guide assembly with a scriber for installation later. Figure 10-240 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 17. Installing the Timing Belt for the Holding Tray Assembly Paper Jogging Guide Plate Butt the rack plate of the paper jogging guide plate against section A (open state). Install the timing belt on the pulley. A Figure 10-241 18. Adjusting the Position of the Holding Tray Paper Jogging Solenoid Install the solenoid so that the stroke is 1.5 ±0.3 mm, i.e., between the rubber silencer and the end of the solenoid. 1.5–0.3mm Figure 10-242 10-30 COPYRIGHT © 1997 CANON INC.
CHAPTER 10 TROUBLESHOOTING 19. Installing the Drive Belt Install the drive belt on the gears and rollers as follows: Drum drive belt Main motor Registration feeding drive belt Pick-up motor Fixing/waste toner drive belt Holding tray drive belt Pick-up drive belt Figure 10-243 Caution: When attaching the holding tray drive belt, attach it on the pulley so that it is toward the front (inside when viewed from the rear) while the pick-up drive belt is toward the rear (outside when viewed from the rear).
CHAPTER 10 TROUBLESHOOTING E. Fixing System 1. a. b. c. Points to Note When Handling the Fixing Heater Do not touch the heater surface. Install both heaters so that the side with the longer heater wire is toward the front. In the case of the 120V model, install the main heater (790 W) on the right and the sub heater (410 W) on the left when viewing from the front of the fixing assembly. In the case of the 220/240V model, install the main heater (1200 W) on the right side. d.
CHAPTER 10 TROUBLESHOOTING Caution: Do not loosen the mounting screw on the paper guide mount; otherwise, the paper guide position must be adjusted. If you have loosened it for some reason, make sure that the original position is maintained with reference to the notches provided on the fixing assembly. 3. Adjusting the Pressure of the Lower Roller (nip) The nip width must be as indicated in Table 10-203. Otherwise, make adjustments by turning the pressure adjusting nut.
CHAPTER 10 TROUBLESHOOTING Note: a and c represent points 10 mm from either side. Dimension Measured when both upper and lower rollers have been heated sufficiently. b 7.3±0.5mm |a-c| a. 1) 2) 3) 4) 0.5mm or less Table 10-203 Measuring the Nip Wait for 15 min after the copier has completed its warm-up period, make 20 A4 copies, and measure the nip. Select A3. Open the copyboard cover. Select ‘NIP’ in service mode ( ] 4 ] ). Press the ] user mode key.
CHAPTER 10 TROUBLESHOOTING F. Electrical System 1. 1) 2) 3) 4) 5) 6) 7) 8) When Replacing the DC Controller PCB Install a new DC controller PCB. Press the service mode switch over the cover with a clip. Select RAM_INIT:0 ← (]: START) in service mode ( ] 4 ] ). Press the ] user mode key. Execute AE adjustment. Enter the values recorded on the label attached behind the front door. Enter the appropriate settings for the user in service mode ( ] 5 ] ). Press the Reset key twice. 2.
CHAPTER 10 TROUBLESHOOTING Caution: In non-auto control mode, all values for corona current control, lamp intensity control, and developing bias control are set to their respective default values. w Using Non-Auto Control Mode When image faults are noted, you may use non-auto control mode to find out weather the cause is on the input side or the output side of the microprocessor on the DC controller PCB. If the images are corrected in non-auto control mode, the cause is on the input side, i.e.
CHAPTER 10 TROUBLESHOOTING w 1) 2) 3) 4) Method 2 Turn OFF the power switch. Remove the blank exposure lamp assembly. Connect the connector of the potential sensor. Attach the potential sensor check electrode (FY9-3012) to the potential sensor. Figure 10-247 Caution: When attaching the check electrode to the potential sensor, take care so that its magnet will not come into contact with the potential sensor cover.
CHAPTER 10 TROUBLESHOOTING 5) Connect the cable for the potential sensor check electrode to J-1 on the potential measurement PCB. 6) Insert the door switch actuator into the door switch assembly. 7) Turn ON the power switch. Caution: Do not touch the potential sensor assembly once you have turned ON the power switch. 8) Start service mode ( ] 2 ] ), and check to make sure that the indication of address P023 (hexadecimal analog value) is between ‘0003’ and ‘0001B’ during initial rotation. Reference: 1.
3. Checking the Potential Control System START Start non-potential control mode (PO.CONT ’1’; ] 4 ] ). Is the toner image on the photosensitive drum before transfer normal? Is the problem corrected? Start potential control. ( ] 4 ] ) PO.CONT ’0’ NO A B Turn ON the power switch. NO YES Select the ON voltage limiter for the scanning lamp. ( ] 4 ] ) LIMT. Start non-potential control. ( ] 4 ] ) PO.
A B Select the primary power supply limit indication ( ] 1 ] ; PLMT). Start potential control ( ] 4 ] ; PO.CONT’0’). Select ’GLEAM-5’ in service mode ( ] 3 ] ; Direct mode). Is ’1’ indicated under ’PLMY’? NO Measure the voltage between J114-A2 and J114-A13 on the DC controller PCB during copying. (STEP C) (developing bias DC component) YES S Does the indication change between 0.
CHAPTER 10 TROUBLESHOOTING 4. Potential Control System Conversion Table Control (V) Primary (µA) Developing bias (V) Pre-transfer (µA) Transfer (µA) Separation (µA) 3.00 1,400 0 0 440 100 3.05 1,391 3 -2 437 96 3.10 1,382 7 -4 434 92 3.15 1,373 11 -6 431 88 3.20 1,365 15 -8 429 85 3.25 1,356 18 -10 426 81 3.30 1,347 22 -12 423 77 3.35 1,338 26 -14 420 73 3.40 1,330 30 -16 418 70 3.45 1,321 33 -18 415 66 3.50 1,312 37 -20 412 62 3.
CHAPTER 10 TROUBLESHOOTING Control (V) Primary (µA) Developing bias (V) Pre-transfer (µA) Transfer (µA) Separation (µA) 4.65 1,111 123 -68 349 -23 4.70 1,102 127 -70 346 -27 4.75 1,093 131 -72 343 -31 4.80 1,085 135 -74 341 -35 4.85 1,076 138 -76 338 -38 4.90 1,067 142 -78 335 -42 4.95 1,058 146 -80 332 -46 5.00 1,050 150 -82 330 -50 5.05 1,041 153 -84 327 -53 5.10 1,032 157 -86 324 -57 5.15 1,023 161 -88 321 -61 5.
CHAPTER 10 TROUBLESHOOTING Control (V) Primary (µA) Developing bias (V) Pre-transfer (µA) Transfer (µA) Separation (µA) 6.35 813 251 -138 255 -151 6.40 805 255 -140 253 -155 6.45 796 258 -142 250 -158 6.50 787 262 -144 247 -162 6.55 778 266 -146 244 -166 6.60 770 270 -148 242 -170 6.65 761 273 -150 239 -173 6.70 752 277 -152 236 -177 6.75 743 281 -154 233 -181 6.80 735 285 -156 231 -185 6.85 726 288 -158 228 -188 6.
CHAPTER 10 TROUBLESHOOTING Control (V) Primary (µA) Developing bias (V) Pre-transfer (µA) Transfer (µA) Separation (µA) 8.05 516 378 -208 162 -278 8.10 507 382 -210 159 -282 8.15 498 386 -212 156 -286 8.20 490 390 -214 154 -290 8.25 481 393 -216 151 -293 8.30 472 397 -218 148 -297 8.35 463 401 -220 145 -301 8.40 455 405 -222 143 -305 8.45 446 408 -224 140 -308 8.50 437 412 -226 137 -312 8.55 428 416 -228 134 -316 8.
CHAPTER 10 TROUBLESHOOTING Control (V) Primary (µA) Developing bias (V) Pre-transfer (µA) Transfer (µA) Separation (µA) 9.75 218 506 -278 68 -406 9.80 210 510 -280 66 -410 9.85 201 513 -282 63 -413 9.90 192 517 -284 60 -417 9.95 183 521 -286 57 -421 10.00 175 525 -288 55 -425 10.05 166 528 -290 52 -428 10.10 157 532 -292 49 -432 10.15 148 536 -294 46 -436 10.20 140 540 -97 44 -440 10.25 131 543 -299 41 -443 10.
CHAPTER 10 TROUBLESHOOTING 5. Checking the Environment Sensor 1) Start service mode ( ] 1 ] ), and check the temperature/humidity on the control panel display; then, record the values. Data A ‘RTMP’ °C ......Data A1 ‘RHUM’ % ......Data A2 2) Press the Reset key twice, and turn OFF the power switch. 3) Remove the environment sensor, and insert the environment sensor tool (FY9-3014) in its place. 4) Turn ON the power switch, and leave the machine alone for 5 min.
CHAPTER 10 TROUBLESHOOTING Name + probe Checks Address PS1 J111A-2 Scanner home position sensor (SCHP) PC007-03 PS3 J111A-5 Scanner original leading edge 1 sensor (SCDP1) PC107-6 PS5 J112A-4 Copyboard cover open/closed sensor (CBCC) PC007-02 PS6 J110A-8 Lens X home position sensor (LXHP) PC102-02 PS7 J110B-2 Lens Y home position sensor (LYHP) PC102-03 PS8 J119A-4 Holding tray feeding assembly 1 paper sensor (PS8D) PC002-04 Display indication Voltage reading on meter Move the sc
CHAPTER 10 TROUBLESHOOTING Name + probe Checks Address PS9 J113B-12 Holding tray feeding assmbly 2 paper sensor (PS9D) PC002-03 PS10 J108B-7 External delivery sensor (EXDPD) PC005-04 PS11 J108A-13 Fixing cleaning belt length sensor (CBOP) PC005-05 PS12 J108B-12 Internal delivery sensor (IDPD) PC005-02 PS14 J113A-3 Holding tray registration sensor (PS14D) PC005-07 PS15 J113B-10 Holding tray inlet paper sensor (PS15D) PC005-06 Display indication Voltage reading on meter Put paper
CHAPTER 10 TROUBLESHOOTING Name + probe Checks Address PS17 J113B-11 Holding tray pickup sensor (PS17D) PC005-09 PS19 J113B-6 Holding tray recirculating bar home position sensor (HPLPD) PC005-10 PS20 J113A-10 Holding tray Y home position sensor (HTYHP) PC100-3 PS21 J113B-1 Holding tray X home position sensor (HTXHP) PC100-2 PS22 J115B-7 Multifeeder paper sensor (MFS) PC002-05 PS23 J108A-7 Registration paper sensor (RGPD) PC002-02 PS24 J116B-7 Pick-up vertical path 0 sensor (PS2
CHAPTER 10 TROUBLESHOOTING Name + probe Checks Address PS25 J117A-4 Casette 3 lifter position sensor (C3LTP) PC008-08 PS26 J117A-7 Casette 3 paper sensor (C3PD) PC008-06 PS27 J117B-4 Pick-up vertical path 3 sensor (PS27D) PC008-04 PS28 J130A-4 Casette 4 lifter position sensor (C4LTP) PC008-09 PS29 J130B-7 Casette 4 paper sensor (C4PD) PC008-07 PS30 J130B-4 Pick-up vertical path 4 sensor (PS30D) PC008-05 PS31 J116A-4 Deck lifter position sensor (RDLTP) PC007-14 PS32 J116A-7
CHAPTER 10 TROUBLESHOOTING Name + probe Checks Address PS33 J119A-7 Pick-up vertical path 1 sensor (PS33D) PC007-12 PS36 J121B-10 Pick-up vertical path 2 sensor (PS36D) PC007-13 PS37 J116B-13 Deck limiter sensor (RDEL) — PS38 J116B-10 Deck open/closed sensor (RDEOP) PC007-04 PS41 J119B-4 Upper right door sensor (RUPDOP) PC007-00 PS42 J119B-7 Lower right door sensor (RLWDOP) PC007-01 PS46 J105A-9 Multifeeder door sensor (MFDC) PC005-03 Display indication Voltage reading on me
CHAPTER 10 TROUBLESHOOTING Name + probe Checks Address PS47 J108B-4 Fixing assembly outlet paper sensor (FXDEL) PC005-08 PS50 J117B-7 (cassette 3 open/closed sensor) PC009-5 PS51 J130B-7 (cassette 4 open/closed sensor) PC009-6 PS52 J108A-19 (claw jam sensor) PC009-1 PS53 J108A-2 (fixing/feeding unit sensor) PC005-1 Display indication Voltage reading on meter Move the detecting lever by hand in standby.* The light-blocking plate is at PS47.
CHAPTER 10 TROUBLESHOOTING 7. Registering the Cassette/Multifeeder Paper Width Basic Value (] ]4] ]) Perform this under the following conditions: • If you have replaced the paper width detecting VR of the copier (including the multifeeder). • If you have adjusted the front/rear registration for the cassette. For the cassettes 1 through 5, you must register values for two types (STMTR/A4R) for each cassette; for the multifeeder, you must register values for three types (A6R, A4R, A4). a.
CHAPTER 10 TROUBLESHOOTING III. TROUBLESHOOTING IMAGE FAULTS A. Making Initial Checks 1. Site of Installation a. Make sure that the power supply voltage is as rated (±10%; the power plug must remain connected at night). b. Make sure that the site is not subject to high temperature/humidity (near water faucets, water boilers, humidifiers; avoid areas near refrigerators or sources of fire and areas subject to dust). c. Avoid areas subject to ammonium gas. d. Avoid areas subject to direct rays of the sun.
CHAPTER 10 TROUBLESHOOTING 5. Checking the Developing Assembly a. Check to make sure that the rolls at both ends of the developing assembly are in contact with the drum. b. Check to make sure that there is an even coating of toner on the surface of the developing cylinder. 6. Checking the Paper a. Check to see if the paper is of a type recommended by Canon. b. Check to see if the paper is damp. Make copies using paper fresh out of package. 7.
CHAPTER 10 TROUBLESHOOTING 10-56 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING B. Image Fault Samples Not available 10-58 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING C. Troubleshooting Image Faults 1. The copy is too light. (halftone area only) Cause Step Checks Action YES/NO 1 Perform the Image Adjustment Basic Procedure. Is the problem corrected? YES End. Scanner 2 Clean the standard white plate, mirror, lens, and dust-proofing glass. Is the problem corrected? YES End. Developing assembly 3 Are the rolls on the developing assembly in firm contact with the drum during copying? NO Check the developing assembly locking lever.
CHAPTER 10 TROUBLESHOOTING 2. The copy is too light. (solid black also) 3. The copy is too light. (overall, considerably) Cause Transfer/ separation assembly Checks Action YES/NO 1 Perform the Image Adjustment Basic Procedure. Is the problem corrected? YES End. 2 Turn OFF the power switch in the middle of copying, and open the front door. Is the toner image on the surface of the photosensitive drum before transfer more or less normal? NO Go to step 7.
CHAPTER 10 TROUBLESHOOTING Step Checks YES/NO Action Transfer lower guide, Varistor 7 Measure the resistance between the transfer lower guide and metal portion of the feeding assembly with a meter. Is it 0Ω? YES 1. Check the transfer guide if it is in contact with a metal portion (side plate of the feeding assembly, for example). 2. Replace the varistor. NO Check the high-voltage transformer (HVT) and the DC controller PCB.
CHAPTER 10 TROUBLESHOOTING 4. The copy has uneven density. (darker at front) 5. The copy has uneven density. (lighter at front) Cause Step Checks Action YES/NO Primary charging wire 1 Perform the Image Adjustment Basic Procedure. Is the problem corrected? YES End. Developing assembly 2 Are the developing rolls of the developing assembly in firm contact with the photosensitive drum? NO Check the developing assembly locking unit.
CHAPTER 10 TROUBLESHOOTING 6. The copy is foggy. (overall) Cause Step Checks Action YES/NO LIGHT_5 1 Perform the Image Adjustment Basic Procedure. Is the problem corrected? YES End. Scanner 2 Clean the scanning lamp, reflecting plate, side reflecting plate, mirror, lens, dust-proofing glass, and heat-absorbing glass. Is the problem corrected? YES End. Cleaning assembly 3 Is the cleaning blade installed properly? NO Install the cleaning blade correctly.
CHAPTER 10 TROUBLESHOOTING 7. The copy has vertical fogging. 8. The copy has black lines. (vertical, fuzzy, thick) Cause Step Checks Action YES/NO Primary charging assembly 1 Clean the primary charging wire, grid wire, and shielding plate. Is the problem corrected? YES End. Scanner 2 Clean the scanning lamp, reflecting plate, side reflecting plate, lens, mirror, dust-proofing glass. Is the problem corrected? YES End. Pre-exposure lamp 3 Clean the pre-exposure lamp.
CHAPTER 10 TROUBLESHOOTING 9. The copy has black lines. (vertical, thin) Cause Photosensitive drum cleaning assembly Photosensitive drum Step Checks YES/NO 1 Press the Copy Start key, and turn OFF the power switch while copy paper is in the feeding assembly. Are there black lines on the copy before it moves through the fixing assembly? NO Go to step 5.
CHAPTER 10 TROUBLESHOOTING 10. The copy has white spots. (vertical) 11. The copy has white lines. (vertical) Cause Step Checks YES/NO Action Fixing assembly 1 Press the Copy Start key with the copyboard cover open, and turn OFF the power switch while the copy paper is moving through the fixing assembly. Does the copy image have white spots or white lines before it goes through the fixing assembly? NO 1. Clean the inlet assembly (upper, lower) of the fixing assembly. 2.
CHAPTER 10 TROUBLESHOOTING Cause Step Checks YES/NO Action Transfer/separa tion charging assembly, Pretransfer charging assembly 6 Is the cleaning assembly separation claw in contact with the copy paper while the paper is being fed? YES 1. Clean the pre-transfer charging assembly and the transfer/separation charging assembly. If the dirt still exists, replace the charging wire. 2. Try replacing copy paper. 3. Select 'FUZZY' in service mode ( ] 5 ] ), and change the setting to '3'.
CHAPTER 10 TROUBLESHOOTING 12. The copy has white spots. (horizontal) Cause Step Checks YES/NO Action Developing assembly 1 Is the problem noted at intervals of about 52 mm? YES 1. Clean the developing rolls. 2. Dry wipe the surface of the developing cylinder. 3. If scratches are found on the surface of the developing cylinder, replace the developing cylinder. Drum 2 Is the problem noted at intervals of about 25 cm? YES 1. Clean the drum. 2.
CHAPTER 10 TROUBLESHOOTING 13. The back of the copy is soiled. Cause Developing assembly Step Checks YES/NO 1 Turn OFF the power switch when copy paper is moving through the feeding assembly. Is the back of the paper soiled at the time? NO Go to step 3. 2 Is the problem noted at intervals of about 52 mm? YES 1. Clean the registration roller. 2. Clean the transfer guide. 3. Check the developing assembly for leakage of toner. NO 1. Clean the feeding assembly. 2.
CHAPTER 10 TROUBLESHOOTING Fixing assembly 14. The copy has fixing faults. Step Upper roller, Lower roller 1 Is the problem vertical? YES Check the upper and lower rollers for scratches. Heater (H1, H2) 2 Does the heater (H1, H2) turn ON as soon as the power is turned on? NO See "The fixing heater fails to operate." Lower roller pressure 3 Is the lower roller pressure (nip) within standards? NO Adjust the lower roller pressure.
CHAPTER 10 TROUBLESHOOTING 15., 16., 17. The copy has leading edge displacement. Cause Step Checks YES/NO Action Original 1 Is the original placed correctly? NO Place it correctly. Copy paper 2 Is the paper of a type recommended by Canon? NO Try recommended paper; if the results are good, advise the user to use recommended paper. 3 Is the leading edge displacement the same regardless of the source of paper (paper deck, cassette)? YES If it is the same, go to step 4.
CHAPTER 10 TROUBLESHOOTING 18. The copy has a blurred or fuzzy image. Step Checks YES/NO Action Scanner drive gear 1 Do the lengths of the cable wound on the cable pulley overlap while the scanner is moving? Or, is the cable too slack or too taut? YES 1. Route the cable once again. 2. If the cable is twisted or frayed, replace it. Scanner rail 2 Move the No. 1 mirror mount slowly by hand.
CHAPTER 10 TROUBLESHOOTING 19. The copy has horizontal fogging. Cause Step Checks Action YES/NO 1 Is the problem noted at the same location on every copy made in Direct? YES Go to step 3 Scanning lamp, Lam regulator 2 Does the scanning lamp flicker while the scanner is moving forward? YES Check the scanning lamp and the lamp regulator. Scanner 3 Make a reduced copy. Is the problem noted at a different location? NO Check the scanner. YES Check the feeding assembly. Feeding assembly 20.
CHAPTER 10 TROUBLESHOOTING 21. The copy is blank. Cause Step Checks YES/NO Action 1 Is the primary charging assembly installed properly? NO Install the primary charging assembly properly. 2 Is the charging wire or the grid wire broken? YES Install the charging wire or the grid wire once again. Developing assembly 3 Is the developing assembly locked to the drum? NO Check the developing assembly locking lever.
CHAPTER 10 TROUBLESHOOTING IV. TROUBLESHOOTING MALFUNCTIONS A. Troubleshooting Malfunctions Note: Pay attention to the orientation/location of the spring used to force the detecting lever in place whenever you are installing/removing each sensor. 1. E000 Cause Sub thermistor (TH2) Step Checks YES/NO Action 1 Turn off and then on the power switch. Is '000' indicated for about 5 sec and then is the power switch turned off automatically? YES Check the sub thermistor (TH2).
CHAPTER 10 TROUBLESHOOTING Cause Step Checks YES/NO Action Environment 6 Does the problem occur only when the power is turned ON for the first time in the morning? YES •Advise the user that the site environment is outside the standards. •Advise the user to wait until the room is warm enough before turning on the power. Main thermistor (TH1) 7 Replace the thermistor. Is the problem corrected? YES End. NO Replace the DC controller. DC controller 2.
CHAPTER 10 TROUBLESHOOTING 3. E002 4. E003 Cause Step Checks YES/NO 1 Execute 'ERROR' in service mode ( ] 4 ] ), and turn ON the power. Does any of the following apply? • The fixing heater fails to operate. • E002 or E003 is indicated. YES See the appropriate section.
CHAPTER 10 TROUBLESHOOTING 6. E005 Cause Step Checks Action YES/NO Cleaning belt 1 Is the cleaning belt of the fixing assembly taken up? YES Replace the cleaning belt. Cleaning belt detecting lever 2 Is the position of the cleaning belt detecting lever correct? NO Correct the position of the lever. Fixing feeding unit 3 Is the fixing feeding unit properly installed in the machine? YES The connector at the rear of the fixing feeding unit may have poor contact. Make a check.
CHAPTER 10 TROUBLESHOOTING 9. E013 Step Checks YES/NO Action Waste toner feeding screw 1 Is the waste toner feeding screw drive gear pushing the waste toner feeding screw lock detection switch (MSW4)? YES The feeding screw inside the waste toner pipe may be locked because of an obstacle. Remove the waste toner pipe, and try turning the screw by hand. If it turns smoothly, install it once again and see if the problem has been corrected.
CHAPTER 10 TROUBLESHOOTING 10. E015 Cause Step Checks YES/NO Action Power supply (motor controller PCB is part of pickup motor) 1 Set the tester range to 200 VDC. Connect the + probe to J612-3 and the – probe to J612-4 on the motor controller PCB. Is the voltage about 12 V? NO Check the wiring from the DC power supply PCB to the motor controller PCB; if normal, replace the DC power supply PCB.
CHAPTER 10 TROUBLESHOOTING 11. E020 Action Step Checks YES/NO 1 Remove the upper cover of the developing assembly. Is toner in the developing assembly about to overflow? (Put the upper cover back on after the check.) YES Go to step 5. 2 Is hopper full of toner? NO Go to step 5. Hopper assembly sensor 3 Select 'PC002' in service mode ( ] 2 ] ). Is the indication for bit 10 (TEP) on the message display '0', indicating the absence of toner? YES Replace the hopper assembly sensor.
CHAPTER 10 TROUBLESHOOTING 12. E030 (The total copy counter fails to operate.) Step Checks YES/NO Action Total copy counter 1 Turn OFF the power, and remove J104B from the DC controller PCB. Set the tester range to x1KW, and measure the resistance between J104B-2 and J104B-1. Is it about 500W? NO Check the wiring from the DC controller PCB to the total copy counter; if normal, replace the total copy counter. Total copy counter 2 Connect J104B to the DC controller PCB, and turn ON the power.
CHAPTER 10 TROUBLESHOOTING 14. E050 Cause Step Checks Action YES/NO Holding tray X home position sensor (PS21) 1 Is the holding tray X home position sensor (PS21) normal? NO Replace the PS21. Holding tray X motor (M8) 2 Disconnect J209 from the holding tray driver PCB. Is there electrical continuity between the following pins on the motor side? J209-1 and -2J209-5 and -6 NO Replace the holding tray X motor (M8). Holding tray driver PCB 3 Replace the holding tray driver PCB.
CHAPTER 10 TROUBLESHOOTING 17. E203 Cause Scanner home position sensor Step Checks Action YES/NO 1 Is the scanner at home position when E202 turns on? NO See "The scanner fails to move forward." 2 Is the scanner home position sensor (PS1) normal? (See the descriptions on how to check photointerrupters.) NO Check the wiring from the DC controller PCB to PS1; if normal, replace PS1. YES Replace the DC controller PCB. DC controller PCB 18. E204 (Locks the keys but does not indicate a code.
CHAPTER 10 TROUBLESHOOTING 21. E240 Cause DC controller Step Checks YES/NO 1 Turn ON and then OFF the power switch. Is the problem corrected? YES End. NO Replace the DC controller PCB. Checks YES/NO Action 22. E243 Cause Step Action Turn ON and OFF the power switch. Is the problem corrected? YES End. NO Replace the DC controller PCB. 2 Replace the control panel PCB. Is the problem corrected? YES End. Step Checks YES/NO DC controller PCB 1 Control panel PCB 23.
CHAPTER 10 TROUBLESHOOTING 25. E713 Cause Step Checks Action YES/NO Malfunction 1 Turn ON and OFF the power switch. Is the problem corrected? YES End. Connector 2 Is the connector (J703) connecting the sorter and the copier securely connected? NO Replace the DC controller PCB. Sorter controller PCB 3 Replace the sorter controller PCB. Is the problem corrected? YES End. NO Replace the DC controller PCB. DC controller PCB 26.
CHAPTER 10 TROUBLESHOOTING 28. AC power is absent. Step Checks YES/NO Action Power plug 1 Is the power plug connected to the power outlet? NO Connect the power plug. Main supply 2 Is the rated AC voltage at the power outlet? NO The problem is not of the copier's. Advise the user. 3 Is there the specified voltage between J301-1 and J301-5, between J301-3 and J301-5, and between J302-1 and J302-3? (J301 and J302 are in the power supply unit.) YES End.
CHAPTER 10 TROUBLESHOOTING 29. DC power is absent. Cause AC power supply Wiring, DC load Step Checks Action 1 Is the rated voltage present between J301-1 and J301-5 and between J301-3 and J301-5 and between J302-1 and J302-3? (J301 and J302 are in the DC power supply unit.) NO See "AC power is absent." 2 Is the fuse (FU51, FU1) on the DC power supply PCB blown? YES Remove the cause, and replace the fuse.
CHAPTER 10 TROUBLESHOOTING 30. Pick-up fails. Cause Step Checks YES/NO Action Upper right door, Lower right door 1 Are the upper right door and the lower right door closed properly? NO Close the doors properly. Lifter 2 Does the lifter lower when the deck is slid out of the copier? Further, is the sound of the lifter moving up heard when the deck is set? NO See "The lifter fails to move up.
CHAPTER 10 TROUBLESHOOTING 31. The deck lifter fails to move up. Cause Step Checks YES/NO Action Deck 1 Is the deck installed properly? NO Install the deck properly. Lifter cable 2 Is the lifter cable routed properly? NO Route the cable correctly. Spring, Lever 3 Push up the pick-up releasing lever by a finger. Does the pick-up roller lower? NO Remove the pick-up assembly, and check the spring and the lever. Pick-up motor (M2) 4 Does the pick-up motor (M2) rotate? YES Go to step 6.
CHAPTER 10 TROUBLESHOOTING 32. Pick-up fails. (cassette pick-up) Step Checks YES/NO 1 Slide in and out the cassette. Is the sound of the lifter lowering and the lifter motor rotating heard? NO See "The lifter fails to move up." Drive gear 2 Is the gear for drive attached properly? NO Attach the belt properly. Upper right door, Lower right door 3 Are the upper right door and the lower right door closed properly? NO Close the doors properly.
CHAPTER 10 TROUBLESHOOTING Cause Pick-up clutch Checks YES/NO 8 Set the tester range to 30 VDC, and connect the probes of the tester to the connectors on the DC controller PCB as shown. Does the voltage change from 24 to 0 V when the Copy Start key is pressed? YES Check the wiring; if normal, replace the applicable clutch. NO Replace the DC controller PCB. NO Check the wiring and the lever; if normal, replace the sensor. YES Remove the pick-up assembly, and check the springs.
CHAPTER 10 TROUBLESHOOTING 33. The lifter fails to move up. (cassette pick-up) Cause Step Checks YES/NO Action Cassette size detecting switch 1 Is the size of the cassette indicated on the message display? NO Check the cassette size detecting switch. Gear, Lever 2 Slide out the cassette, and move up the lifter by hand. Does it move smoothly? NO Remove the pick-up assembly, and check the gear and the lever.
CHAPTER 10 TROUBLESHOOTING 34. Pick-up fails. (multifeeder) Cause Step Checks YES/NO Action Pick-up roller, Pickup/feeding roller, Separation roller 1 Is the orientation of the pick-up roller, pick-up/feeding roller, and separation roller correct? NO Re-install the applicable part. Belt, Gear, Coupling 2 Is the drive of the main motor transmitted to the multifeeder pickup assembly through the belt, gear, and coupling? NO Check the belt, gear, and coupling.
CHAPTER 10 TROUBLESHOOTING 35. The vertical path roller fails to rotate. Step Checks YES/NO Action Belt, Gear, Coupling 1 Is the drive from the pick-up motor (M2) transmitted to each vertical path roller through the belt, gear, and coupling? NO Install the belt, gear, and coupling properly.
CHAPTER 10 TROUBLESHOOTING 37. The scanner fails to rotate forward. Cause Step YES/NO Checks Action Cable 1 Is the scanner drive cable routed correctly? NO Route the cable correctly. Scanner path 2 Is the scanner rail free of dirt, and does the scanner move smoothly when pushed by hand? NO Check the scanner rail for dirt and foreign object and look for an object that may come into contact with the scanner; as necessary, clean, oil, or repair.
CHAPTER 10 TROUBLESHOOTING 39. The blank exposure lamp fails to turn ON. Cause Step Checks YES/NO DC controller PCB 1 Remove the blank exposure lamp, and connect the connector. Select 'BLANK' in service mode ( ] 4 ] ). Does the blank exposure lamp turn ON normally when the user mode key is pressed? YES Check the wiring from the blank exposure unit to the DC controller PCB; if normal, replace the DC controller PCB. Blank exposure lamp 2 Replace the blank exposure lamp.
CHAPTER 10 TROUBLESHOOTING 41. The pre-exposure lamp fails to turn ON. Step Checks YES/NO Connector 1 Select 'SCAN LAMP' in service mode ( ] 4 ] ). Does the scanning lamp turn ON for 3 sec when the user mode key is pressed? YES Check the connector. (The connector may have poor contact.) Lamp (LA1) 2 Is the scanning lamp (LA1) installed properly? NO Disconnect the power plug from the power outlet, and install the lamp properly.
CHAPTER 10 TROUBLESHOOTING 42. The hopper motor (M10) fails to operate. Cause Step Checks Action YES/NO 1 Execute 'HPPR_MTR' in service mode ( ] 4 ] ). Does the hopper motor rotate? NO Go to step 3. Toner level detection PCB 2 Is the indication for bit 10 of 'PC002' in service mode ( ] 2 ] ) '0', indicating the absence of toner? YES If the developing assembly is full of toner, replace the toner level detection PCB.
CHAPTER 10 TROUBLESHOOTING 43. The hopper motor (M11) fails to operate. Cause Step Checks Action YES/NO 1 Execute 'HPPR_MTR' in service mode ( ] 4 ] ). Does the hopper motor rotate? NO Go to step 3. Toner level detection PCB 2 Is the indication for bit 10 of 'PC002' in service mode ( ] 2 ] ) '0', indicating the absence of toner? YES If the developing assembly is full of toner, replace the toner level detection PCB.
CHAPTER 10 TROUBLESHOOTING 45. The lens fails to move. Cause Step Checks YES/NO Action Rail 1 Turn OFF the power switch, and disconnect the power plug from the outlet. Does the lens move smoothly when the lens motor pulley is turned by hand? NO Check the rail for foreign object and dirt. Drive belt 2 Is the drive belt installed properly? NO Install the drive belt properly.
CHAPTER 10 TROUBLESHOOTING 46. The Add Toner indicator fails to turn ON. Cause Toner sensor (hopper assembly), DC controller PCB Step Checks Action YES/NO 1 Is toner in the hopper assembly? YES Go to step 3. 2 Select 'PC002' in service mode ( ] 2 ] ). Move the toner around the toner sensor (TS1) so that the sensor is exposed. At this time, is the indication for bit 10 on the message display '0', indicating the absence of toner? NO 1. Replace TS1. 2. Replace the DC controller PCB. YES 1.
CHAPTER 10 TROUBLESHOOTING 48. The Control Card Set indicator fails to turn ON. Cause Step Checks YES/NO Action CC-V 1 Can copies be made without a control card? YES Check to see if the connector of the CC-V is shorted. Control panel 2 Replace the control panel. Does the indicator turn ON? YES End. NO Replace the DC controller PCB. DC controller PCB 49. The Control Card Set indicator fails to turn OFF.
CHAPTER 10 TROUBLESHOOTING 52. The fixing heater fails to turn ON. Cause Step Checks YES/NO Thermal switch (TP1) 1 Slide out the fixing assembly, and connect the probes of the meter to both terminals of the thermal switch (TP1). Is there electric continuity? NO Replace the thermal switch. Fixing heater (H1, H2) 2 Slide out the fixing unit, and connect the probes of the meter to both terminals of the fixing heater (H1, H2). Is there electric continuity? NO Replace the fixing heater.
CHAPTER 10 TROUBLESHOOTING V. TROUBLESHOOTING FEEDING PROBLEMS A. Copy Paper Jams ! The machine may be divided into the following blocks in reference to location of jams: q Pick-up assembly w Separation/feeding assembly e Fixing/feeding assembly r Drum cleaner assembly t Holding tray assembly y Feeding assembly The descriptions herein about how to remove jams therefore are given according to location.
CHAPTER 10 TROUBLESHOOTING 1. Pick-up assembly Step Checks YES/NO Action 1 Is the copy paper curled or wavy? YES Replace the copy paper. Advise the user on the correct method of storing paper. 2 Try Canon-recommended paper. Is the problem corrected? YES Advise the user to use recommended paper. DC controller PCB, Pick-up clutch 3 Does the pick-up roller of the selected cassette/tray rotate during copying operation? NO See "Pick-up fails.
CHAPTER 10 TROUBLESHOOTING 2. Separation/feeding assembly Step Checks YES/NO Copy paper 1 Has the leading edge of copy paper moved past the registration roller? YES Go to step 5. Registration roller 2 Is the coupling of the registration roller correctly joined? NO Install the fixing/feeding unit correctly. 3 Is the registration roller worn, deformed, or soiled? YES If soiled, clean it with alcohol; if worn or deformed, replace it.
CHAPTER 10 TROUBLESHOOTING 3. Fixing/delivery assembly Step Delivery assembly separation claw 1 Is the separation claw worn or deformed? YES 1. Replace the separation claw. 2. If soiled, clean it with solvent. Upper/lower roller 2 Is the paper guide soiled with toner? YES Replace the roller. Paper guide 3 Is the upper/lower roller deformed or scratched? YES Clean it with solvent. 4 Is the height (position) of the paper guide correct? NO Adjust it.
CHAPTER 10 TROUBLESHOOTING 5. Cleaning assembly YES/NO Action Are the transfer/separation charging assembly and the pretransfer charging assembly installed securely? NO Install the transfer/separation charging assembly and the pre-transfer charging assembly securely. 2 Is the height of the charging wire as specified? NO Adjust the height of the charging wire. Separation claw (cleaner assembly) 3 Is the separation claw under the cleaner assembly damaged? YES Replace the separation claw.
CHAPTER 10 TROUBLESHOOTING 7. Holding tray assembly (re-pick up) Cause Step Checks Action YES/NO Holding tray separation clutch (CL6) 1 Is the holding tray separation clutch (CL6) normal? NO Replace the CL6. Holding tray repick up roller solenoid (SL6) 2 Is the holding tray re-pick up roller rotating? NO Replace SL6. Holding tray pick-up sensor (PS17) 3 Is the holding tray pick-up sensor (PS17) normal? NO Replace PS17.
CHAPTER 10 TROUBLESHOOTING 9. Holding tray feeding assembly Cause Step Checks Action YES/NO 1 Is the holding tray feeding assembly installed correctly? NO Install it correctly. Holding tray feeding clutch (CL1), Holding tray feeding clutch (CL2) 2 Is the paper inside the holding tray feeding assembly moving properly? NO Replace CL1 or CL2.
CHAPTER 10 TROUBLESHOOTING B. Feeding Failure 1. Double feeding Cause Separation roller Step 1 Checks Action YES/NO Is the separation roller deformed or worn? Spring YES Replace the separation roller. NO Replace the spring used to pull the separation roller. YES/NO Action 2. Wrinkling Cause Step Checks Pick-up assembly 1 Turn OFF the power while copy paper is moving through the feeding assembly. Is the paper wrinkled? Or is it moving askew? YES Check the pick-up assembly.
CHAPTER 10 TROUBLESHOOTING VI. ARRANGEMENT/FUNCTIONS OF THE ELECTRICAL PARTS COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING A. Sensors PS5 PS4 PS3 PS1 SRV1 PS7 PS22PS46 PS6 PS33 PS24 PS41 SVR2 SV1 PS36 SVR3 PS25 PS30 PS42 PS26 SV2 PS50 PS28 PS29 PS51 PS23 PS52 PS47 PS10 PS12 PS19 PS14 PS17 PS11 PS53 PS21 PS20 PS15 PS9 PS8 Figure 10-601 10-114 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING Symbol Name Notation Function Photointerrupter PS1 PS3 PS5 PS6 PS7 PS8 PS9 PS10 PS11 PS12 PS14 PS15 PS17 PS19 PS20 PS21 PS22 PS23 PS24 PS25 PS26 PS27 PS28 PS29 PS30 PS33 PS36 PS41 PS42 PS46 PS47 PS50 PS51 PS52 PS53 SV1 SV2 Scanner home position detection Scanner original leading edge 1 detection Copyboard cover open/closed detection Lens X home position detection Lens Y home position detection Holding tray feeding assembly 1 paper detection Holding tray feeding assembly 2 p
CHAPTER 10 TROUBLESHOOTING Paper Deck PS37 PS32 PS31 PS38 Figure 10-602 10-116 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING Symbol Name Notation Photointerrupter PS31 Deck lifter position detection PS32 Deck paper detection PS37 Deck lifter limit detection PS38 Deck open/closed detection Q Function Table 10-602 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING B. Switches and Solenoids SL10 SL15 SW1 SL2 SW3 SW2 MSW5 SL14 SL9 SL7 SL8 SL6 MSW4 SL13 SL3 SL11 SL12 Figure 10-603 10-118 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING Symbol S L Name Solenoid Microswitch/switch Function Notation SL2 Drives the delivery paper deflecting plate. SL3 Drives the fixing assembly. SL6 Drives the holding tray re-pick up roller (D-cut roller). SL7 Drives the holding tray weight. SL8 Drives the holding tray paper deflecting plate. SL9 Moves the holding tray. SL10 Drives multifeeder pick-up. SL11 Releases the cassette 3 pick-up roller. SL12 Releases the cassette 4 pick-up roller.
CHAPTER 10 TROUBLESHOOTING SL4 Figure 10-604 10-120 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING Symbol S L Name Solenoid Notation SL4 Function Releases the deck pick-up roller. Table 10-604 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING C. Motors and Fans M3 M1 M11 M10 M4 M5 M12 M13 M2 M6 M7 M8 M9 M14 M15 FM8 FM5 FM7 FM3 FM6 FM2 Figure 10-605 10-122 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING Symbol Name Fan M Motor Notation Function FM2 Exhaust fan FM3 Fixing assembly heat exhaust fan FM5 Developing fan FM6 Feeding fan FM7 Cleaner fan FM8 Scanner cooling fan M1 Main motor M2 Pick-up motor M3 Scanner motor M4 Lens X motor M5 Lens Y motor M6 Transfer/separation charging wire cleaner motor M7 Holding tray re-circulating bar motor M8 Holding tray X motor M9 Holding tray Y motor M10 Hopper motor (toner supply) M11 Hopper motor (toner
CHAPTER 10 TROUBLESHOOTING D.
CHAPTER 10 TROUBLESHOOTING Front Paper Deck CL14 M18 Figure 10-607 Symbol M Name Notation Function Motor M18 Deck lifter drive motor Clutch CL14 Deck pick-up CL Table 10-607 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING E. Lamps, Heaters, and Photosensors DS3 TH LA1 DS1 TH2 SVR1 LA2 DS2 TP3 TS2 H3 TP2 TH1 TP1 TS1 VZ1 CNT2 CNT1 H2 H1 THHUM1 LF1 CB1 Figure 10-608 10-126 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING Symbol Name C B Circuit breaker CNT Counter Photosensor Heater Lamp L F Line filter Variable resistor Thermistor Notation CB1 Function Circuit breaker CNT1 Total counter CNT2 Option counter DS1 Original size 1 detection DS2 Original size 2 detection DS2 Original size 3 detection H1 Fixing main heater H2 Fixing sub heater H3 Drum heater LA1 Scanning lamp LA2 Pre-exposure LED LF1 Noise filter SVR1 Multifeeder paper width detecting VR TH Drum he
CHAPTER 10 TROUBLESHOOTING F. PCBs t o !1 y i !3 u q e w !0 r !2 Figure 10-609 10-128 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING Ref. Name Description q w e r t y u i o !0 !1 !2 !3 DC controller PCB Control panel CPU PCB Control pane key PCB FL inverter PCB HVT PCB Holding tray control PCB Potential control PCB Option counter PCB Drum heater controller PCB AC driver PCB Lamp regulator DC power supply PCB Service switch PCB Controls sequence. Controls the control panel. Receives key inputs from the control panel; Controls LED indications. Supplies power for the control panel backlight lamp.
CHAPTER 10 TROUBLESHOOTING G. Variable Resistors, Light-Emitting Diodes, and Check Pins by PCB Of the variable resistors (VR), light-emitting diodes (LED), and check pins found, those that may be used in the field are discussed: Caution: 1.Some LEDs emit dim light because of leak current when OFF; this is a normal condition and should be kept in mind. 2. VRs that may be used in the field............ VRs that must not be used in the field.....
CHAPTER 10 TROUBLESHOOTING SW101-2 SW101-2 SW101*-3 No Trans. OFF OFF — 100V AB-configuration OFF ON — 230V AB/Inch-configuration ON OFF — 230V A-configuration ON ON — 120V Inch-configuration Vertical size Caution: DIP SW101-3 on the DC controller PCB is for the factory; do not change the settings to avoid malfunction. Table 10-610 AB-configuration (4R4E) Ratio 200% 200.0% A4→A3, B5→B4 141.1% A4→B4 122.4% B4→A3, B5→A4 115.4% 100% 100.0% A3→B4, A4→B5 86.5% B4→A4 81.
CHAPTER 10 TROUBLESHOOTING A-configuration (2R2E) Ratio 200% 200.0% A4→A3 141.4% 100% 100.0% A3→A4 70.7% 50% 50.0% Table 10-613 AB/Inch-configuration (4R4E) Ratio 200% 200.0% A4/LTR→A3, B5→B4 141.4% A4/LTR→B4 122.4% B4→A3, B5→A4/LTR 115.4% 100% 100.0% A3→B4, A4/LTR→B5 86.5% B4→A4/LTR 81.6% A3→A4/LTR, B4→B5 70.7% 50% 50.
CHAPTER 10 TROUBLESHOOTING 2. AC Driver PCB 1 6 J642 4 1 J641 Figure 10-611 3. DC Power Supply PCB 8 5 J311 1 4 J304 1 2 1 J305 1 6 J306 1 J303 J301 1 4 5 5/4 J309 1 1 J308 J302 1 3 Figure 10-612 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 4. Control CPU PCB 1 2 J923 1 9 B10 J911 B1 J915 A1 14 A10 J916 1 18 J913 1 18 J912 1 1 16 1 J920 15 J919 Figure 10-613 10-134 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 5. Holding Tray Driver PCB 1 4 J201 B13 B1 1 5 J203 J202 A1 A13 1 J204 13 1 J205 10 3 1 J210 6 1 J209 9 1 7 J208 1 3 1 J207 J206 Figure 10-614 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 6. Potential Measurement PCB 1 4 1 J3 5 J1 1 4 J2 VR1 VR2 LED1 Figure 10-615 VR Description VR1 For factory VR2 For factory Table 10-616 LED Description LED1 Remains ON while measuring the surface potential of the drum. Table 10-617 10-136 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 7. HVT1 PCB J301 1 3 1 2 J403 VR201 1 J203 5 1 4 1 J201 10 J202 Figure 10-616 VR VR201 Description For factory Table 10-618 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 8. HVT2 PCB J501 T502 2 J404 1 J402 J401 T501 Figure 10-617 9. Inverter PCB 1 2 1 J956 J955 4 Figure 10-618 10-138 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 10. Lamp Regulator PCB 5 J503 1 1 6 J501 Figure 10-619 11. Counter PCB 1 J63 2 SW931 1 J65 5 1 2 ON Figure 10-620 SW931-1 SW931-2 0 0 So that the sub counter is assumed to be not connected. 1 0 So that the sub counter is used as a small copy counter. 0 1 So that the sub counter is used as a two-sided copy counter. 1 1 So that the sub counter is used as a large-size copy counter. Mode Table 10-619 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING VII. SERVICE MODE A. Outline The machine’s service mode is divided into the following six: Item *1* *2* *3* *4* *5* *6* Notation Description DISPLAY Control/display mode I/O DISPLAY I/O display mode ADJUST Adjustment mode FUNCTION Function mode OPTION Optional settings mode COUNTER Counter mode Table 10-701 Each mode has items which may be checked on the message display.
CHAPTER 10 TROUBLESHOOTING C. Using Adjustment Mode and Option Settings Mode In adjustment mode or option settings mode, settings made on the control panel are stored in RAM on the DC controller PCB, thereby simulating operations executed by conventional VRs and SWs. Table 10-702 shows the label attached behind the front door. At the factory, each machine is adjusted, and the adjustment values are recorded on the label.
CHAPTER 10 TROUBLESHOOTING D. Control Display Mode ( ] 1 ]) Press the <> key to select the screen. 1/9 Screen 1-1 Item Description Remarks Unit: ÞC FTMP Indicates the surface temperature of the fixing roller. (output of the main thermistor TH1) RTMP Indicates the machine internal temperature. (output of the thermal sensor on the DC controller PCB) RHUM Indicates the machine internal humidity.
CHAPTER 10 TROUBLESHOOTING Item LIFT Description Indicates '1' if the lifter position sensor does not turn ON within 8 sec after the lifter up command is issued for the paper deck/cassette lifter. Order of flags Deck, cassette 3, cassette 4 Remarks Resetting is by turning OFF and ON the power switch. • LMP1 and LMP2 indicate the ON control voltage even when the scanning lamp is OFF. Note: If ‘0’ is indicated under ‘WIRE’, be sure to execute ‘wire cleaning’ in user mode (]).
CHAPTER 10 TROUBLESHOOTING 2/9 Screen 1-2 Item Description Remarks DPOT Indicates the surface potential of the drum. Unit: V VAE Indicates the average surface potential during AE measurement. Unit: V VL1T Indicates the average surface potential during AE measurement. Unit: V VL1M Indicates the measured value of VL1 (light area potential). Unit: V VL2M Indicates the measured value of VL2 (light area potential for developing bias).
CHAPTER 10 TROUBLESHOOTING 3/9 Screen 1-3 Item Description PC Indicates the current value of the primary charging assembly. GRID Indicates the current value of the grid of the primary charging assembly. PTC Indicates the current value of the pre-transfer charging assembly. TC Indicates the current value of the transfer charging assembly. SC Indicates the current value of the separation charging assembly. BIAS Indicates the DC value of the developing bias.
CHAPTER 10 TROUBLESHOOTING 4/9 Screen 1-4 Item Description DCMET-1 Indicates the output of the original size sensor 1. DCMET-2 Indicates the output of the original size sensor 2. DCMET-3 Indicates the output of the original size sensor 3. DCMET-4 Indicates the output of the original size sensor 4. 10-146 COPYRIGHT © 1997 CANON INC. Remarks CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 5/9 Screen 1-5 Item Description Remarks B-JAM0 Indicates the location of the most recent jam and second most recent jam inside the copier. See Table 10-703. (*3) B-JAM3 Indicates the location of the third, fourth, and fifth most recent jams inside the copier. See Table 10-703. (*3) B-JAM6 Indicates the location of the sixth, seventh, and eighth most recent jams in the copier. See Table 10-703. (*3) B-ALRM *1 Note used.
CHAPTER 10 TROUBLESHOOTING 6/9 Screen 1-6 Item Description Remarks DF-JAM Indicates the location of an RDF jam. See Tables 10-707, -708, and -709. S-JAM Indicates the location of a jam in the sorter. See Table 10-704. DF-ERR *1 Indicates the nature of the results of self diagnosis in the RDF. (*2) S-ERR *1 Indicates the nature of the results of self diagnosis in the sorter. (*3) DF-ALM Indicates the nature of an alarm for the RDF. S-ALM Indicates the nature of an alarm in the sorter.
CHAPTER 10 TROUBLESHOOTING High-order 2 digits Display code Jam location Display code Sensor name Sensor No.
CHAPTER 10 TROUBLESHOOTING Sorter Alarm Code Tray Alarm Code Alarm Display code 02 Resetting Overstacking Remove all copy paper from the bin. Table 10-705 Stapler Alarm Code Display code Alarm Resetting 01 Staple down Run a self check. (Done if the results are good.) 02 Staple jam Open the front door, remove all staple jams, and close the front door. 03 Stapler safety mechanism ON Open the front door, remove all jams, and close the front door.
CHAPTER 10 TROUBLESHOOTING RDF Jam Codes Type of original jam Original forced off Conditions Code S1, S7 The sensor (S7) does not detect the leading edge of an original and, in addition, the sensor (S1) has not detected an original 1500 ms after the pick-up motor (M1) has turned on. 01 S7 The sensor (S7) does not detect the leading edge of an original 1500 ms after the pick-up motor (M1) has turned on.
Delivery CHAPTER 10 TROUBLESHOOTING Type of original jam Sensor Conditions Delivery delay S6, S8 During original delivery, the sensor (S6) does not detect an original 100 mm or 250 ms after the sensor (S8) has detected the leading of an original. 41 Delivery stationary S6 The sensor (S6) does not detect the trailing edge of an original 100 mm or 250 ms after a check for a reversal delivery check. 42 RF open MS1 The RDF is opened while in operation.
CHAPTER 10 TROUBLESHOOTING 7/9 Screen 1-7 Item Description Remarks Q161 Indicates the version of the ROM (Q161) on the DC controller PCB. See "Guide to Version." Q160 Indicates the version of the ROM (Q160) on the DC controller PCB. See "Guide to Version." Q156 Indicates the version of the ROM (Q156) on the DC controller PCB. See "Guide to Version." Q140 Indicates the version of the ROM (Q140) on the DC controller PCB. See "Guide to Version.
CHAPTER 10 TROUBLESHOOTING 8/9 Screen 1-8 Item Description Remarks KEY-CHK Indicates the code of the key pressed on the control panel. (*1) DF-SIZE Indicates the size of the original detected by the RDF. DOC-SIZE Indicates the size of the original detected by the copier's original size sensor. DOC-STS1 Indicates the output (0/1) of the copier's original size sensor. DOC-STS2 Indicates the output (0/1) of the copier's original size sensor. See Table 10-710. *1 Touch panel. XX.
CHAPTER 10 TROUBLESHOOTING Corresponding original size sensor number. DOC,STSI: X X X X ↓ ↓ ↓ ↓ 1 0 3 2 Original Original detection detection circuit 0 circuit 1 Original detection circuit 2 Original detection circuit 3 Note: The Inch-configuration type does not have original detection circuit 3. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 9/9 Screen 1-9 Item Remarks Description MULTI Indicates the outputs of the copy paper width sensor and the paper size sensor set on the multifeeder. WIDE: output of paper width sensor (analog) SW: output of paper length sensor (0/1) SIZE: paper width (mm) CST-1 Indicates the outputs of the copy paper width and the paper size sensor set in the paper deck.
CHAPTER 10 TROUBLESHOOTING E. I/O Display Mode ( ] 2 ]) Press numeric keys to select the screen. The screen will indicate the states of the input port and the output port. Screen 2-1 Bit data is converted to hexadecimal data for checks on analog data (e.g., address P023 photosensitive drum potential signal). COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC000-00 Pick-up motor drive signal M02 M2ON J114B-8 0: rotate PC000-01 Drum motor drive signal M01 M1ON J111B-4 0: rotate PC000-02 Developing fan drive signal FM05 FM5D J115A-1 1: rotate PC000-03 Developing clutch drive signal CL08 DEVCD J112A-2 1: ON PC000-04 Holding tray feeding 1 clutch drive signal CL01 HTF1CD J112A-7 1: ON PC000-05 Scanner locking solenoid drive signal (4-cassette type only) SL01
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC001-00 Holding tray paper deflecting SL08 plate solenoid drive signal HTPDD J113B-9 1: ON PC001-01 Holding tray weight solenoid drive signal SL07 HTWSD J113A-4 1: ON PC001-02 Holding tray D-cut (pick-up) roller solenoid drive signal SL06 HTDSD J113A-5 1: ON PC001-03 Fixing inlet guide drive signal SL16 FXGDSD J108B-15 1: ON PC001-04 Holding tray swing solenoid drive signal SL09 HTJSD J113B-5 1: ON PC001-
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC002-00 Pick-up vertical path 0 paper detection signal PS24 PS24D J116B-7 1: paper present PC002-01 Stream reading home position detection signal PS04 SCDP2 J111A-8 0: home position PC002-02 Registration paper detection signal PS23 RGPD J108A-7 1: paper present PC002-03 Holding tray feeding assembly 2 paper detection signal PS09 PS9D J113B-12 1: paper present PC002-04 Holding tray feeding assembly 1 paper det
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC003-00 Cassette 2 pick-up roller releasing solenoid drive signal SL05 C2PURR J121A-13 1: ON PC003-01 CC-X count signal CCX10 CCXNTD J123-6 1: count PC003-02 High-voltage output enable signal HVT HVTRMT J114A-10 0: high-voltageoutput ON PC003-03 Control Card V drive signal CCV CCNTD J106B-1 1: count PC003-04 Feeding fan/cleaner fan drive signal (half speed) FM06/07 FM6D J109-1/ 1: half speed J114B-3 PC003
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC004-00 Scanner motor brake signal M03 M03BK J112B-5 1: brake ON PC004-01 Scanner motor forward signal M03 M03FW J112B-7 0: forward 1: reverse PC004-02 Scanner motor drive signal M03 M03ON J112B-6 0: ON PC004-03 Scanner motor (overcurrent control) current limit M03 M03CL J112B-4 1: current limiter ON PC004-04 Scanner motor mode 1 signal M03 M03MD0 J112B-10 PC004-05 Scanner motor mode 2 signal M03 M03MD1
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC005-00 Front door open detection signal SW02 FDOD J104A-4 1: open PC005-01 Fixing/feeding unit detection signal PS53 FFUCNT J108A-2 0: fixing/feeding unit connected PC005-02 Internal delivery signal PS12 IDPD J108B-12 0: paper present PC005-03 Multifeeder door open detection signal PS46 MFDC J105A-9 1: closed 0: open PC005-04 External delivery signal PS10 EXDPD J108B-7 1: paper present PC005-05 Fixing c
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC006-00 Hopper motor (toner stirring) drive signal M11 M11ON J105A-4 1: ON PC006-01 Pre-exposure LED ON signal LED1 PEXP J103B-2 1: ON PC006-02 Hopper motor (toner supply) drive signal M10 M10ON J105A-2 1: ON PC006-03 Drum heater full-wave/halfwave switching signal H3 DHRD J102B-2 1: half-wave 0: full-wave PC006-04 Total copy counter drive signal CNT1 TCNTD J104B-2 1: count PC006-05 Option copy counter d
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC007-00 Upper right door open detection signal PS41 RUPDOP J119B-4 1: closed 0: open PC007-01 Lower right door open detection signal PS42 RLWDOP J119B-7 1: closed 0: open PC007-02 Copyboard cover closed signal PS05 CBCC J112A-4 1: closed 0: open PC007-03 Scanner home position signal PS01 SCHP J111A-2 1: home position PC007-04 Deck/cassette 1 open/closed PS38 detection signal RDEOP C1OP J116B-10 1: closed 0
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC008-00 Cassette 3 paper length 0 signal SV-1 C3PL0 J122A-1 PC008-01 Cassette 3 paper length 1 signal SV-1 C3PL1 J122A-2 PC008-02 Cassette 4 paper length 0 signal SV-2 C4PL0 J122B-1 PC008-03 Cassette 4 paper length 1 signal SV-2 C4PL1 J122B-2 PC008-04 Pick-up vertical path 3 paper detection signal PS27 PS27D J117B-4 1: paper present PC008-05 Pick-up vertical path 4 paper detection signal PS30 PS30D J130B-
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC009-00 Holding tray feeding unit detection HT HTFCNT — 0: holding tray feeding unitconnected PC009-01 Fixing claw jam detection signal PS52 FXCJS J108A-19 1: paper present PC009-02 Service switch detection signal SSW1 SSWON J106B-5 1: ON PC009-03 Scanner locked detection signal PS48 SCLK J114A-14 1: locked PC009-04 Left deck pick-up outlet paper detection signal PS49 LEXTPD J121B-5 1: paper present PC00
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC011-00 Not used PC011-01 Not used PC011-02 Not used PC011-03 Not used PC011-04 Multifeeder pick-up solenoid drive signal SL10 SL10D J115B-13 1: ON M02 M02BLK J114B-5 1: brake ON PC011-05 Not used PC011-06 Internal signal (clock) PC011-07 Pick-up motor brake signal Address Description Name Signal Jack PC012-00 Internal signal (digit) J125-1 PC012-01 Internal signal (digit) J125-2 PC012-02 Internal signal (digit
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack PC020 Multifeeder paper width signal (analog) SVR1 PC021 Cassette 1 paper width signal SVR4 C1PW J130B-10 PC022 Cassette 2 paper width signal SVR5 C2PW J130A-12 PC023 Photosensitive drum potential signal (analog) POT J103B-9 PC024 Cassette 3 paper width signal SVR2 C3PW J117B-10 PC025 Cassette 4 paper width signal SVR3 C4PW J117A-12 PC026 Not used COPYRIGHT © 1997 CANON INC.
CHAPTER 10 TROUBLESHOOTING RDF-H1 (1/4) Address Description Name Signal Jack Remarks PC027-00 Stopper plate solenoid (SL1) STPSL J5-10 1: ON PC027-01 Paper deflecting plate solenoid (SL3) DFSLD J4-2 1: ON PC028-00 Pick-up roller sensor (S5) PUSP J5-2 1: paper present PC028-01 Delivery sensor 1 (S6) PSP3 J9-6 1: paper present PC028-02 Pick-up sensor (S7) PDP1 J9-9 1: paper present PC029-00 Original sensor (S1) DEP1 J5-1 1: paper present PC029-01 Registration sensor (S3) PDP2
CHAPTER 10 TROUBLESHOOTING RDF-H1 (2/4) Address Description Name Signal Jack Remarks PC030-00 Belt motor clock sensor (S10) BMCLK J9-18 alternates between 1 and 0 during rotation PC030-01 Feeding motor clock sensor (S9) FMCLK J9-15 alternates between 1 and 0 during rotation PC030-02 Registration roller clock sensor (S11) RRCLK J5-5 alternates between 1 and 0 during rotation PC030-03 PCB internal signal PC030-04 PCB internal signal PC030-05 Not used. PC030-06 Not used. PC030-07 Not used.
CHAPTER 10 TROUBLESHOOTING RDF-H1 (3/4) Address Description Name Signal Jack Remarks PC033-00 PCB internal signal 1: belt motor CW rotation PC033-01 PCB internal signal 1: pick-up motor CW rotation PC033-02 PCB internal signal PC033-03 Original detection LED DSD J8-4 1: ON PC033-05 Brake BKD J6-2 1: ON PC033-06 Clutch CLD J13-2 1: ON PC033-07 Paper retaining solenoid (SL2) WSLD J5-12 1: ON PC034-00 Push switch (SW1) SW1 1: pressed PC034-01 Push switch (SW2) SW2 1: pressed PC
CHAPTER 10 TROUBLESHOOTING RDF-H1 (4/4) Address Description Name Signal Jack Remarks PC036-00 DIP SW1 1: ON PC036-01 DIP SW2 1: ON PC036-02 DIP SW3 1: ON PC036-03 DIP SW4 1: ON PC036-04 DIP SW5 1: ON PC036-05 DIP SW6 1: ON PC036-06 DIP SW7 1: ON PC036-07 DIP SW8 1: ON PC037-00 Not used. to PC046-07 PC048-00 Original sensor (S1) DEP1 J5-7 in hexadecimal notation. PC048-01 Registration sensor (S3) PDP2 J9-20 in hexadecimal notation.
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-E2 (1/9) Address Description PC062-00 Feeding motor (M1) control signal Name Signal FDPWM PC062-01 Push bar drive motor (M7) rotation control signal Jack Remarks 1: ON 1: Up PC062-02 Not used PC062-03 Push bar drive motor (M7) drive signal 1: ON PC062-04 Guide bar motor (M8) pulse signal 1 GBMA 1: ON PC062-05 Guide bar motor (M8) pulse signal 2 GBMB 1: ON PC062-06 Guide bar motor (M8) pulse signal 3 GBMA 1: ON PC062-07 Guide bar motor (M8) pulse
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-E2 (2/9) Address Description Name Signal Jack Remarks PC064-00 D/A converter serial signal PC064-01 Not used PC064-02 Feeding motor (M1) speed change signal FDMVC PC064-03 D/A converter load signal 1: control speed 0: load PC064-04 D/A converter serial communication clock signal PC064-05 Not used PC064-06 Not used PC064-07 Not used PC065-00 Feeding motor (M1) CW rotation signal FDMCCW 1: ON PC065-01 Feeding motor (M1) CCW rotation signal FDMCCW 1: ON
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-E2 (3/9) Address Description Name Signal Jack Remarks PC066-00 Bin shift motor (M9) drive signal 1: Up PC066-01 Stapler unit swing motor (M4) rotation signal 1: ON PC066-02 Stapler unit swing motor (M4) drive signal 1: ON PC066-03 Not used PC066-04 Not used PC066-05 Not used PC066-06 Not used PC066-07 Not used PC067-00 Stapler unit shift home position signal (S2) MVHP PC067-01 Logic voltage monitor signal 1: home position 0: voltage down PC067-02 No
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-E2 (4/9) Address Description Name Signal Jack Remarks PC069-00 Stapler unit swing motor (PI8) clock signal SWMCLK alternates between 0 and 1. PC069-01 Bin shift motor (PI17) clock signal BMCLK alternates between 0 and 1. PC069-02 Feeding motor (PI5) clock signal FMCLK alternates between 0 and 1. PC069-03 Lead cam position detection signal (PI20) LDP alternates between 0 and 1.
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-E2 (5/9) Address Description Name Signal Jack Remarks PC072-00 Matrix COM input signal 0 PC072-01 Matrix COM input signal 1 PC072-02 Matrix COM input signal 2 PC072-03 Matrix COM input signal 3 PC072-04 Matrix COM input signal 4 PC072-05 Gear swing (SL4) drive signal GCSLD 1: ON PC072-06 Not used PC072-07 All solenoids drive signal 1: all ON PC073-00 Stapling home position detection signal (Q1) SPL-HP 1: home position PC073-01 Reference wall home posi
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-E2 (6/9) Address Description Name Signal Jack Remarks PC075-00 Stapling position LED 4 ON signal 1: ON PC075-01 Stapling position LED 1 ON signal 1: ON PC075-02 Staple absent LED ON signal 1: ON PC075-03 Stapling position LED 5 ON signal 1: ON PC075-04 Stapling position LED 2 ON signal 1: ON PC075-05 Front retrieval key LED ON signal 1: ON PC075-06 Stapling position LED 3 ON signal 1: ON PC075-07 Staple key LED ON signal 1: ON PC076-00 DIP swi
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-E2 (7/9) Address Description Name Signal Jack Remarks PC077-00 DIP switch 1-8 detection signal 1: ON PC077-01 DIP switch 1-7 detection signal 1: ON PC077-02 DIP switch 1-6 detection signal 1: ON PC077-03 DIP switch 1-5 detection signal 1: ON PC077-04 Front door open signal (MSW3) DROPN 1: closed PC077-05 Not used PC077-06 Not used PC077-07 Not used PC078-00 Staple mode key check signal 1: ON PC078-01 Stapler unit set detection signal 1: stapler
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-E2 (8/9) Address Description Name Signal Jack Remarks PC080-00 Staple start key check signal 1: ON PC080-01 Shift up key check signal 1: ON PC080-02 Feeding guide home position detection signal (PI6) 1: ON PC080-03 Bin external paper detection signal (PI7) 1: paper present PC080-04 Feeding guide up signal (PI2) 1: UP PC080-05 Not used PC080-06 Not used PC080-07 Not used PC081-00 Not used PC081-01 Not used PC081-02 Not used PC081-03 Not used PC081-04
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-E2 (9/9) Address Description PC091-00~07 Bin sift motor current value (M9) D/A output value Name Signal Jack Remarks hexadecimal, 4-digit notation PC092-00~07 Guide bar drive motor current value (M8) D/A output value PC093-00~07 Bin internal sensor intensity value (S4) D/A output value PC094-00~07 Push bar drive motor current value (M7) PC095-00~07 Bin internal paper sensor 2 intensity value (S7) D/A output value 10-182 COPYRIGHT © 1997 CANON INC.
CHAPTER 10 TROUBLESHOOTING Sorter-E1 (1/2) Address Description Name Signal Jack Remarks PC062-00 Serial clock for EEPROM EESCK PC062-01 Serial output data EEPROM EEDI PC062-02 Chip select signal for EEPROM EECS 1: ON PC062-03 Bin shift motor (M2) drive signal BSMD 1: ON PC062-04 Bin shift motor (M2) PWM signal BSM PC062-05 Bin shift motor (M2) DOWN signal BMDWN PC062-06 Bin shift motor (M2) UP signal BMUP PC062-07 Feeding motor (M1) PWM signal FEEDPWM PC063-00 Delivery sensor (PI1)
CHAPTER 10 TROUBLESHOOTING Sorter-E1 (2/2) Address Description Name Signal Jack Remarks PC065-00 Not used PC065-01 Feeding motor (M1) CW/CCW signal FMA/FMB PC065-02 Feeding motor (M1) current switching signal 1 FMCCC1 PC065-03 Feeding motor (M1) current switching signal 2 FMCCC2 PC065-04 LED1 ON signal LED 0: CW 0: ON PC065-05 Not used PC065-06 Not used PC065-07 Not used 10-184 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-G1/Sorter-G1 (1/3) Address Description Name Signal Jack Remarks PC062-00 Joint signal (MS1) MS1 SOP 1: open PC062-01 Stapler cover (MS5) MS5 SPLOPN 1: open PC062-02 Stapler set signal (MS6) MS6 SPL-SET 1: at HP PC062-03 Staple sensor (PI13) PI13 HKEMP 0: staple absent PC062-04 Stapler home position sensor PI12 SPL-HP 1: at HP PC062-05 Stapler swing signal (MS9) MS9 SWGSET 0: at HP PC062-06 Bin paper sensor 0: paper present PC062-07 N
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-G1/Sorter-G1 (2/3) Address Description Name Signal Jack Remarks PC065-00 Feeding motor clock sensor PI6 FMCLK PC065-01 Bin shift motor clock sensor PI9 BMCLK PC065-02 Lead cam sensor PI2 LCHP 1: at level (HP) PC065-03 Bin HP sensor PI3 BHP 1: at HP PC065-04 Guide bar HP sensor PI7 SGBHP 1: at HP PC066-00 Stapler motor CW rotation signal M4 SPLMFW 1: CW PC066-01 Stapler motor CCW rotation signal M4 SPLMRV 1: CCW PC065-05 Not used PC06
CHAPTER 10 TROUBLESHOOTING Stapler Sorter-G1/Sorter-G1 (3/3) Address Description Name Signal Jack Remarks PC068-00 DIP SW1 0: ON PC068-01 DIP SW2 0: ON PC068-02 DIP SW3 0: ON PC068-03 DIP SW4 0: ON PC068-04 PUSH SW2 0: ON PC068-05 PUSH SW3 0: ON PC068-06 Stapler present/absent switch signal 0: stapler sorter PC068-07 Manual staple key MNSPL 0: ON PC069-00 Bin paper sensor D/A output 0 PC069-01 Bin paper sensor D/A output 1 PC069-02 Bin paper sensor D/A output 2 PC069-03 Bin paper sen
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC097-00 Primary charging wire PC097-01 cleaning motor drive signal M12 PCLM J103B-3 J103B-4 1/0:motor CW 0/1:motor CCW PC097-02 Pre-transfer charging wire PC097-03 cleaning motor drive signal M13 PTRCLM J103A-1 J103A-2 1/0:motor CW 0/1:motor CCW PC097-04 Transfer/separation charging PC097-05 wire cleaning motor drive signal M06 TSCLM J108B-19 J108A-1 1/0:motor CW 0/1:motor CCW PC097-06 Primary charging wire cleane
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack PC100-00 Holding tray X motor (phase A) signal M09 M09A J113B-2 PC100-01 Holding tray X motor (phase B) signal M09 M09B J113B-4 PC100-02 Holding tray Y home position signal PS20 HTXHP J113A-10 PC100-03 Holding tray X home position signal PS21 HTYHP J113B-1 PC100-04 Lens X motor hold signal M04 M04ACM M04BCM J110A-3 J110A-6 PC100-05 Lens X motor (phase A) signal M04 M04A J110A-1 J110A-2 PC100-06 CVR PWM signal Rema
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks PC102-00 Lens Y motor (phase A) signal M05 M05A J110A-10 J110A-11 PC102-01 Lens Y motor (phase B) signal M05 M05B J110A-13 J110A-14 PC102-02 Lens X home position signal PS06 LXHP J110A-8 1: home position PC102-03 Lens Y home position PS07 LYHP J110B-2 1: home position PC102-04 Internal signal (lens X drive end) PC102-05 Internal signal (lens Y drive end) PC102-06 Internal signal (holding tray X drive end) PC102-
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks Name Signal Jack Remarks Name Signal Jack Remarks PC105-00 Internal signal (holding tray Y drive start) PC105-01 Not used PC105-02 Not used PC105-03 Not used PC105-04 Not used PC105-05 Not used PC105-06 Not used PC105-07 Not used Address Description PC118-00 Digit 0 input PC118-01 Digit 0 input PC118-02 Digit 0 input PC118-03 Digit 0 input PC118-04 Digit 0 input PC118-05 Digit 0 input PC118-06 Digit 0 input PC118-07 Dig
CHAPTER 10 TROUBLESHOOTING Address Description Name Signal Jack Remarks Name Signal Jack Remarks PC120-00 Digit 2 input PC120-01 Digit 2 input PC120-02 Digit 2 input PC120-03 Digit 2 input PC120-04 Digit 2 input PC120-05 Digit 2 input PC120-06 Digit 2 input PC120-07 Digit 2 input Address Description PC121-00 Digit 3 input PC121-01 Digit 3 input PC121-02 Digit 3 input PC121-03 Digit 3 input PC121-04 Digit 3 input PC121-05 Digit 3 input PC121-06 Digit 3 input PC121-07 Digit 3 input 10-192 COPYR
CHAPTER 10 TROUBLESHOOTING F. Adjustment Mode ( ] 3 ]) Press the <> key to select the screen. Press the appropriate item to highlight. Enter the appropriate value on the keypad, and press the OK key to accept. (Use the User Mode key to check.) 1/17 Screen 3-1 Item LIGHT-5 LIGHT-5P AE-SLOP Description Use it to adjust the reference ON voltage of the scanning lamp for copying. Use it to adjust the reference ON voltage of the scanning lamp for copying in photo mode.
CHAPTER 10 TROUBLESHOOTING 2/17 Screen 3-2 Item Description Settings BRAKE-SC Use it to adjust the braking applied when the scanner moves in reverse. REGIST Use it to adjust the margin (registration) along the leading edge of copies. 10-194 COPYRIGHT © 1997 CANON INC. 0~100 Remarks A higher setting will increase the braking. -100~100 A higher setting will delay the timing at which the registration roller turns ON, thereby decreasing the leading edge margin. (in 0.
CHAPTER 10 TROUBLESHOOTING 3/17 Screen 3-3 Item Description Settings Remarks LE-BLANK Use it to adjust the leading edge nonimage width (ON period of the blank exposure lamp). -100~100 A higher setting will increase the leading edge non-image margin. F-BLANK Use it to adjust the margin along the front (ON period of the blank exposure lam). -100~100 A higher setting will increase the margin along the front. R-BLANK Use it to adjust the rear margin (ON period of the blank exposure lamp).
CHAPTER 10 TROUBLESHOOTING 4/17 Screen 3-4 Description Settings PRIMARY Use it to adjust the application voltage for the primary charging assembly. (Be sure to enter the value recorded on the service label when replacing the DC controller PCB in the field.) 0~1023 BIAS Use it to adjust the developing bias. (Be sure to enter the value on the service label whenever replacing the DC controller PCB in the field.
CHAPTER 10 TROUBLESHOOTING 5/17 Screen 3-5 Description Settings TRN-1 Use it to adjust the current (1st side) for the transfer charging assembly. (Be sure to enter the value recorded on the service label whenever replacing the DC controller PCB in the field.) Label value ±100 TRN-DUP Use it to adjust the current (2nd side, 2sided copy) for the transfer charging assembly. (Be sure to enter the value recorded on the service label whenever replacing the DC controller PCB in the field.
CHAPTER 10 TROUBLESHOOTING 6/17 Screen 3-6 Description Settings SEP-1 Use it to adjust the current (1st side) for the separation charging assembly. (Be sure to enter the value on the service label whenever replacing the DC controller PCB in the field.) Label value ±200 SEP-DUP Use it to adjust the current (2nd side, 2sided copy) for the separation charging assembly. (Be sure to enter the value recorded on the service label whenever replacing the DC controller PCB in the field.
CHAPTER 10 TROUBLESHOOTING 7/17 Screen 3-7 Item Description Settings Remarks C1-STMTR 100V model only C1-A4R 100V model only C2-STMTR 100V model only C2-A4R 100V model only COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 8/17 Screen 3-8 Item Description Settings Remarks C3-STMTR Use it to fine-adjust and enter the paper width basic value (STMTR) for the cassette 3. 000~255 See p. 10-53. C3-A4R Use it to fine-adjust or enter the paper width basic value (A4R) for the cassette 3. 000~255 See p. 10-53. C4-STMTR Use it to fine-adjust or enter the paper width basic value (STMTR) for the cassette 4. 000~255 See p. 10-53.
CHAPTER 10 TROUBLESHOOTING 9/17 Screen 3-9 Item Description Settings Remarks MF-A6R Use it to fine-adjust or enter the paper width basic value (A6R) for the multifeeder. 000~255 See p. 10-53. MF-A4R Use it to fine-adjust or enter the paper width basic value (A4R) for the multifeeder. 000~255 See p. 10-53. MF-A4 Use it to fine-adjust or enter the paper width basic value (A4) for the multifeeder. 000~255 See p. 10-53. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 10/17 Screen 3-10 Item Settings Description BOOK-ERA Use it to adjust the margin for book frame erasing mode. ATM Use it to set the operating environment (atmospheric pressure of the site of installation). 0:1 ~ 0.75 atm (up to an elevation of 2500 m) 1:0.75 ~ 0.70 atm (between 2500 and 3000 m) 2:0.70 ~ 0.65 atm (between 3000 and 3500 m) 10-202 COPYRIGHT © 1997 CANON INC. 10~30 0~2 Remarks Unit:1 mm A higher setting will increase the margin.
CHAPTER 10 TROUBLESHOOTING 11/17 Screen 3-11 Remarks Description Settings DOC-ST Use it to adjust the original stop position when the RDF is in use. -1023~ 1023 Unit:0.5 mm The effective range is between -10 and +10; values outside the range will have no effect. P-INTRVL Use it to adjust the sheet-to-sheet distance for the RDF (2-on-1 mode). -1023~ 1023 Unit:0.5 mm The effective range is between -10 and + 10; values outside the range will have no effect.
CHAPTER 10 TROUBLESHOOTING 12/17 Screen 3-12 Item Description Settings Remarks RFAE-F5L (100V model only) Use it to adjust the RDF (AE mode and left pick-up) scanning lamp reference ON voltage. -1023~ 1023 A higher setting will make the slope less steep. RFAE-F9L (100V model only) Use it to adjust the RDF (AE mode and -1023~ left pick-up) newspaper original intensity. 1023 A higher setting will make the slope steeper.
CHAPTER 10 TROUBLESHOOTING Note: Keep the following in mind for ‘DOC-ST’, ‘P-INTRVL’, and ‘LA-SPEED’ in RDFrelate service mode: 1. These items affect the values stored in the memory on the RDF controller PCB; therefore, initializing the copier’s RAM will not clear these values, not requiring re-input. 2.
CHAPTER 10 TROUBLESHOOTING 13/17 Screen 3-13 Item Settings Description Remarks LA-LCKPS (100V model only) Use it to adjust the RDF (stream reading 2300~ 2500 mode) image leading edge. A higher setting will advance the timing at which the registration roller turns ON, thereby increasing the margin. LA-SPEED (100V model only) Use it to adjust the original feeding speed for stream reading. -1023~ 1023 A higher setting will increase the speed, thereby reducing the image.
CHAPTER 10 TROUBLESHOOTING 14/17 Screen 3-14 Description Settings Remarks Use it to fine-adjust the drive distance of the paper guide plate of the duplexing unit for each paper size. -10~+10 Step: 0.183 mm x 2 Each step will affect both front and rear paper guides so that a signal step will result in a change of 0.367 mm. (A negative value will make the distance smaller.
CHAPTER 10 TROUBLESHOOTING 15/17 Screen 3-15 Item Description Settings Remarks LTRR_PSZ Use it to fine-adjust the drive distance of the paper guide plate of the duplexing unit for each paper size. -10~+10 Step: 0.183 mm x 2 Each step will affect both front and rear paper guides so that a signal step will result in a change of 0.367 mm. (A negative value will make the distance smaller.
CHAPTER 10 TROUBLESHOOTING 16/17 Screen 3-16 Description Settings Remarks Use it to fine-adjust the drive distance of the paper guide plate of the duplexing unit for each paper size. -10~+10 Step: 0.183 mm x 2 Each step will affect both front and rear paper guides so that a signal step will result in a change of 0.367 mm. (A negative value will make the distance smaller.
CHAPTER 10 TROUBLESHOOTING 17/17 Screen 3-17 Item B4_PSZ B5_PSZ B5R_PSZ 10-210 Description Settings Remarks Use it to fine-adjust the drive distance of the paper guide plate of the duplexing unit for each paper size. -10~+10 Step: 0.183 mm x 2 Each step will affect both front and rear paper guides so that a signal step will result in a change of 0.367 mm. (A negative value will make the distance smaller.
CHAPTER 10 TROUBLESHOOTING G. Function Mode ( ] 4 ]) Press the <> key to select the screen. Press the item to highlight, and press the User Mode key (*) to start the operation. Check to make sure that the machine is in standby state when executing any operations. 1/11 Screen 4-1 Item TONER-S Description Remarks Use it for toner supply (at time of installation). The notation indicates the supply duration in sec: normally, 7 to 9 min (420 to 540 sec).
CHAPTER 10 TROUBLESHOOTING 2/11 Screen 4-2 Item ERROR 10-212 Description Remarks Use it to reset E000, E001, E002, E003, E05, E013, E020 and the jam history, error history, sorter jam, RDF jam, or alarm history. Resetting E000, however, will not reset the jam history. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 3/11 Screen 4-3 Item Description DISP-LED Use it to turn ON the LEDs on the control panel.* LCD-CHK Use it to turn ON the LCD on the control panel. (The LCD back light will remain OFF for 3 sec and then return.) SCANLAMP Use it to turn ON the scanning lamp. (The scanner cooling fan will also turn ON.) * : The The The The The The COPYRIGHT © 1997 CANON INC. Remarks The lamp will remain ON for 3 sec.
CHAPTER 10 TROUBLESHOOTING 4/11 Screen 4-4 Item Description Remarks BLANK Use it to turn ON the blank exposure lamp. The lamp will remain ON for 3 sec. PRE-EXP Use it to turn ON the pre-exposure LED lamp. The lamp will remain ON for 3 sec. HPPR-MTR Use it to operate the hopper motor. (M10 and M11 will rotate simultaneously.) The motor will operate for 3 sec. BK-ROT Use it to operate the developing cylinder. The cylinder will operate for abut 2 min. 10-214 COPYRIGHT © 1997 CANON INC.
CHAPTER 10 TROUBLESHOOTING 5/11 Screen 4-5 Item AE-ADJ Description Remarks Use it to specify how density measurement level automatic adjustment should be executed in AE mode: If set to 0, set F5 original. If set to 1, set F9 original. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 6/11 Screen 4-6 Item Description Remarks NIP Use it to specify how nip automatic measurement should be executed for the fixing roller. A solid black image will be created automatically and stopped at the fixing roller; in about 20 sec, automatic discharge will occur. See p. 10-33. PO-CONT Use it to turn ON/OFF potential control. 1:OFF 0:ON 10-216 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 7/11 Screen 4-7 Item Description Remarks C1-STMTR 100V model only. C1-A4R 100V model only. C2-STMTR 100V model only. C2-A4R 100V model only. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 8/11 Screen 4-8 Item Description C3-STMTR Use it for automatic adjustment of paper width reference point 1 (STMTR) for cassette 3. C3-A4R Use it for automatic adjustment of paper width reference point 2 (A4R) for cassette 3. C4-STMTR Use it for automatic adjustment of paper width reference point 1 (STMTR) for cassette 4. C4-A4R Use it for automatic adjustment of paper width reference point 2 (A4R) for cassette 4.
CHAPTER 10 TROUBLESHOOTING 9/11 Screen 4-9 Item Description Remarks MF-A6R Use it for automatic adjustment of paper width reference point 1 (A6R) for the multifeeder. MF-A4R Use it for automatic adjustment of paper width reference point 2 (A4R) for the multifeeder. MF-A4 Use it for automatic adjustment of paper width reference point 3 (A4) for the multifeeder. * Slide out the cassette, set the paper width guide plate inside the cassette to suit the paper size, and slide in the cassette.
CHAPTER 10 TROUBLESHOOTING 10/11 Screen 4-10 Item Description Remarks RFSKEW Use it to correct skew movement in the RDF. RF-AE Use it for automatic adjustment of the RF AE sensor. 100V model only. RFSE-INT Use it to initialize the RDF sensor. * S-BCLN Use it to clean the RDF separation belt. * Executing 'START' will keep the indication on the screen '0'. Refer to LEDs 1, 2, and 3 of the RDF controller PCB (flash in sequence or simultaneously) . 10-220 COPYRIGHT © 1997 CANON INC.
CHAPTER 10 TROUBLESHOOTING 11/11 Screen 4-11 Item RAM-INIT Description Use it to initialize the RAM on the DC controller PCB. COPYRIGHT © 1997 CANON INC. Remarks After initialization, the Copy Start screen will appear. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING H. Options Mode ( ] 5 ]) Press the <> key to select the screen. Press the appropriate item to highlight; then, enter the appropriate value on the keypad. Use user mode to set/re-set each mode. 1/9 Screen 5-1 Item Description Remarks SHUT-OFF Use it to turn ON/OFF the auto shut-off function. 1:OFF 0:ON DENS-ID Use it to switch copy density notation. 0:9-step 1:17-step SIZE-DET Use it to turn ON/OFF the size detection function.
CHAPTER 10 TROUBLESHOOTING 2/9 Screen 5-2 Item Remarks Description DK-SZ-R Use it to switch the paper sizes for the deck. 0:A4 1:LTR 2:B5 DK-SZ-L (Not used) Use it to switch the paper size for the left deck. 0:A4 1:LTR 2:B5 COPY-LIM Use it to set the copy count upper limit. (May be any number between 1and 999.) CALL-SW 1. You may use any available area within the current mode memory. 2. Use 'OPTION CALL SW' in service mode (] 5 ]) 0 : Disable call function. (All will be used for mode memory.
CHAPTER 10 TROUBLESHOOTING 3/9 Screen 5-3 Item M-NOTATI 10-224 Description Remarks Use it to change the available paper size listing of the multifeeder. COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 4/9 Screen 5-4 Item Remarks Description U-NOTATI Use it to switch the notation for universal size papers: 0: indicates U1, U2, U3, U5 1: indicates the size selected under 'CST-GRP' AE-SW Use it to specify whether to use the RDF's AE or the copier's AE. (Normally, the RDF's AE will be used whenever the RDF is used; select the copier's AE if the RDF's AE fails for some reason.) Note that stream reading will not be available when the RDF's AE is not used. 100V model only.
CHAPTER 10 TROUBLESHOOTING 5/9 Screen 5-5 Item Description CST-GRP1 Use it to select the type of notation when 'UNOTATI' for universal size paper is set to '1'. 0: G LTR (indicated as LTR) 1: K LGL (indicated as U) CST-GRP2 Use it to select the type of notation when 'UNOTATI' for universal size paper is set to 1'.
CHAPTER 10 TROUBLESHOOTING 6/9 Screen 5-6 Item Remarks Description FUZZY Use it for controlling (fuzzy) the current applied to the pre-transfer, transfer, and separation charging assemblies according to the ambient temperature. You may disable control and opt for one of three environment settings.
CHAPTER 10 TROUBLESHOOTING 7/9 Screen 5-7 Item Description Remarks IDL-SW Use it to turn ON/OFF the drum idle rotation mode to prevent distortion of images under high-humidity conditions or light images at time of power-on (e.g., in the morning). 0:OFF (no idle rotation) 1:ON (control by IDLMODE setting) IDL-MODE Use it to switch the idle rotation mode when the power switch is turned ON with the surface temperature of the fixing roller 75°C or less.
CHAPTER 10 TROUBLESHOOTING 8/9 Screen 5-8 Remarks Description Item F-POT-SW Enter '1' if transfer separation faults occur because of an error (faulty) in the potential sensor. Use it as a tentative remedy until replacing the potential sensor. F-POT-D Use it when changing the setting 'F-POT-SSW' (0 → 1). 0:If the user uses text-oriented originals. 1:If the user uses photo-oriented originals. 2:If re-transfer (white spots at points 50 mm around the leading edge) occurs.
CHAPTER 10 TROUBLESHOOTING 9/9 Screen 5-9 Remarks Item Description SCAN_SEL Use it to turn ON/OFF the original size detection function for RDF non-default original sizes. ON: So that an assumed original size will be used if the size of an original is not one of the defaults for such modes as require identification of original size (APS, AMS, frame erasing). 0: OFF 1: ON 2SIDE_SL Use it to select two-sided mode (one-sided to twosided) as standard copying mode.
CHAPTER 10 TROUBLESHOOTING I. Counter Mode ( ] 6 ]) •Press the <> key to select the screen. •Press the item to highlight; then, depressing the service switch while the screen is on the display, press the C key on the control panel to reset the counter reading to ‘00000000’. 1/5 Screen 6-1 Remarks Description Item L-TOTAL Use it for the large-size total copy counter. (paper length 300 mm or more or non-default size) Returns to '00000000' after '99999999'.
CHAPTER 10 TROUBLESHOOTING 2/5 Screen 6-2 Item Description Remarks L-OVERLAY Use it so that the 2nd sides of large-size overlay copies will be counted. (paper length 300 mm or more or non-default size) Returns to '00000000' after '99999999'. L-2-SIDE Use it so that the 2nd sides of large-size two-sided copies will be counted. (paper length 300 mm or more or non-default size) Returns to '00000000' after '99999999'. L-DF Use it so that large-size originals will be counted.
CHAPTER 10 TROUBLESHOOTING 3/5 Screen 6-3 Description Item Remarks S-TOTAL Small-size total copy counter (paper length 300 mm or less) Returns to '00000000' after '99999999'. S-MULTI Small-size multifeeder copy counter (paper length 300 mm or less) Returns to '00000000' after '99999999'. S-CST1 Small-size cassette 1/right deck pick-up copy counter (paper length 300 mm or less) Returns to '00000000' after '99999999'.
CHAPTER 10 TROUBLESHOOTING 4/5 Screen 6-4 Item Description Remarks S-OVERLAY Small-size overlay 2nd side copy counter (paper length 300 mm or less) Returns to '00000000' after '99999999'. S-2-SIDE Small-size 2nd side 2-sided copy counter (paper length 300 mm or less) Returns to '00000000' after '99999999'. S-DF Small size original counter (paper length 300 mm or less) Returns to '00000000' after '99999999'. 10-234 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
CHAPTER 10 TROUBLESHOOTING 5/5 Screen 6-5 Item Description Remarks WEB Copy counter after replacement of the fixing cleaning belt (An alarm will be issued at the start of service mode after making 250,000 copies.) Returns to '00000000' after '99999999'. WSTTNR Copy counter after disposal of the waste toner from the waste toner case (An alarm will be issued at the start of service mode after making 250,000 copies.) Returns to '00000000' after '99999999'.
CHAPTER 10 TROUBLESHOOTING n Incrementing the Counter Reading q TOTAL • For the 1st side of overlay/2-sided copies, when paper is stacked on the holding tray. • For one-sided copies and the 2nd side of overlay/2-sided copies, when the paper is discharged outside the machine. (If a sorter is installed, when the paper is discharged to the sorter bin.) w OVERLAY, 2_SIDE • When the paper (overlay/2-sided copy) is discharged outside the machine.
CHAPTER 10 TROUBLESHOOTING VIII. SELF DIAGNOSIS The microprocessor of the machine’s DC controller is equipped with a function that checks the condition of the machine (particularly the condition of its sensors); it will indicate an error code on the control panel upon detection of an error. A. Copier Code Cause Description • The temperature of the upper fixing roller does not reach 70°C within 3 min 30 sec after power-on.
CHAPTER 10 TROUBLESHOOTING Code E013 E015 Description Cause • Waste toner feeding screw (faulty) • DC controller PCB (faulty) • The waste toner feeding screw cannot rotate, and the detecting switch (MSW4) has been pressed a multiple number of times within a specific period of time. • Pick-up motor (M2; faulty) • DC controller PCB (faulty) • Clock pulses (2 or more) are not generated within 1 sec after the pick-up motor drive signal has been generated.
CHAPTER 10 TROUBLESHOOTING Code E203 Cause • Scanner home position sensor (PS1; faulty) • DC controller PCB (faulty) (E202) • Scanner motor (M3; faulty) • Scanner home position sensor (PS1; faulty) No code indica• DC controller PCB (faulty) tion; keys are locked; Note 2. (E204) No code indication; keys are locked; Note 2. E210 E212 E213 Description • The scanner home position signal (SCHP) is generated for 0.5 sec or more when the scanner motor (M3) drive signal is being generated.
CHAPTER 10 TROUBLESHOOTING Code Description Cause • DC controller PCB (faulty) • An error has occurred in the communication between the master (Q156) and the slave (Q140) in the microprocessor on the DC controller PCB. • DC controller PCB (faulty) • Control panel PCB (faulty) • An error has occurred in the communication between the master (Q156) on the microprocessor on the DC controller PCB and the slave (Q140) in the microprocessor on the control panel PCB.
CHAPTER 10 TROUBLESHOOTING Caution: 1. When the self diagnosis function has turned ON, you can reset the machine by turning its power switch OFF once. E000, E001, E002, E003, E004, E005, E013, or E020 is not reset by turning OFF the power switch; this is to prevent the user from casually resetting the machine when the thermistor has an open circuit, since such would overheat and damage the fixing roller and would cause overflowing of toner from the hopper.
CHAPTER 10 TROUBLESHOOTING B. RDF Self Diagnosis Code Description Cause • Data communication with copier (faulty) • The communication is monitored at all times, and this error is detected if the communication is disrupted for 5 sec or more. • Pick-up motor (M1; fails to rotate) • Pick-up roller sensor (S5; faulty) • A flag is attached to the spindle of the pick-up motor (M1), and the rotation of the motor is monitored with reference to the flag blocking the pick-up roller sensor (S5).
CHAPTER 10 TROUBLESHOOTING C. Sorter Self Diagnosis Code E500 E510 E522 E523 E524 E525 E526 E530 Cause Description • CPU or communication IC • An error has occurred in the communication between the sorter and the copier. • Feeding motor (fails to rotate) • Feeding guide up/down mechanism (e.g., interference) • The lock signal from the motor is off for a specific period or more.
CHAPTER 10 TROUBLESHOOTING n Sorter • Error Indications, Error Types, and Timing of Detection Code E532 E533 Cause • Stapler unit drive motor (fails to rotate) • The operation does not end within a specific time after the motor drive signal has been generated. • Stapler internal paper sensor (faulty adjustment) • The stapler internal automatic adjustment mechanism has failed or an error has occurred in the automatic adjustment value.
APPENDIX A. GENERAL TIMING CHART ..........A-1 B. SIGNALS AND ABBREVIATIONS ...A-2 C. GENERAL CIRCUIT DIAGRAM....A-5 COPYRIGHT © 1997 CANON INC. D. RDF-H1 GENERAL CIRCUIT DIAGRAM......................................A-7 E. SPECIAL TOOLS LIST .................A-9 F. SOLVENTS AND OILS..................A-10 CANON NP6045 REV. 1 MAR.
blank page
! , # '( A.
B. SIGNALS AND ABBREVIATIONS What follows below is a list of signals and abbreviations used in the chapters of the manual and circuit diagrams. The abbreviations within parentheses represent analog signals, which cannot be expressed in terms of ‘1’ or ‘0’. 1.
M3MD1 M3MD2 M3ON M3CL M4A X-HOLD M4B M5A Y-HOLD M5B M8A M8B M8HLD M9A M9B M9HLD M1FG M1ON M10ON M11ON M2ON M7ON MFDC MFPCD MFPW MFRLSD MFS MHOND MHRD OPCNTD OPRST PCLHP PCLM PEXP POT POT-S-ON PS14D PS15D PS17D PS24D PS27D PS30D PS33D PS36D PS8D PS9D PTCLHP PTRCLM PWOFF RDEL RDEOP RDFEDGE RDLMD RDPD RDPUCD SCANNER MOTOR REPRODUCTION RATIO SELECT (1) command SCANNER MOTOR REPRODUCTION RATIO SELECT (2) command SCANNER MOTOR DRIVE command SCANNER MOTOR PLL CONTOL command LENS X MOTOR (A) command LENS X MOTOR (
A-4 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
Not available COPYRIGHT © 1997 CANON INC. C. GENERAL CIRCUIT DIAGRAM CANON NP6045 REV. 1 MAR.
A-6 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
D.
A-8 COPYRIGHT © 1997 CANON INC. CANON NP6045 REV. 1 MAR.
APPENDIX E. SPECIAL TOOLS LIST No. 1 Tool description Door switch Shape Tool No. Notation TKN-0093 Remarks A Point of use Front door 2 Cleaning oil TKN-0464 A For cleaning the fixing roller (10 packs/box) B For adjusting the No. 1/No. 2 mirror position (front/ right as a pair) TKN-0464-000 CLEANNING OIL HUILE DE NETTOYAGE CANON INC.
APPENDIX F. SOLVENTS AND OILS No. 1 Description Ethyl alcohol (Etanol) Isopropyl alcohol (Isopropanol) Use Composition Description Cleaning: e.g., glass, plastic, rubber parts; external covers C2H5O (CHZ3)2 CHOH • Do not bring near open fire. • Procure localy. • Isopropyl alcohol may be substituted. 2 MEK Cleaning: e.g., metal; oil or toner CH3COC2H5 • Do not bring near fire. • Procure locally. 3 Heat-resisting grease Lubricating; e.g.
Prepared by OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DEPT. 1 OFFICE IMAGING PRODUCTS TECHNICAL SUPPORT DIV. CANON INC. Printed in Japan REVISION 0 (OCT. 1996) [33130/18723] REVISION 1 (MAR.
This publication is printed on 70% reprocessed paper. PRINTED IN JAPAN (IMPRIMÉ AU JAPON) 0397S2.
