R LASER PRINTER SERVICE MANUAL MODEL:HL-1060
© Copyright Brother 1997 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. Specifications are subject to change without notice. Trademarks: The brother logo is a registered trademark of Brother Industries, Ltd. Apple,the Apple Logo,and Macintosh are trademarks,registered in the United States and other countries,and True Type is a trademark of Apple computer, Inc.
PREFACE This service manual contains basic information required for after-sales service of the laser printer (here- in-after referred to as "this machine" or "the printer"). This information is vital to the service technician to maintain the high printing quality and performance of the printer. This service manual covers the HL-1060 laser printer. This manual consists of the following chapters: CHAPTER I : FEATURES AND SPECIFICATIONS Features, specifications, etc.
CONTENTS CHAPTER I FEATURES AND SPECIFICATIONS ..........................................I-1 1. FEATURES .........................................................................................................................I-1 2. SPECIFICATIONS ..............................................................................................................I-3 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Printing...............................................................................................................
2.3 2.4 2.5 Sensors................................................................................................................................... II-19 2.3.1 Cover Sensor ............................................................................................................ II-19 2.3.2 Toner Empty Sensor ................................................................................................. II-19 Drum Unit................................................................................
CHAPTER IV MAINTENANCE AND TROUBLESHOOTING.......................... IV-1 1. INTRODUCTION.............................................................................................................. IV-1 1.1 1.2 Initial Check .............................................................................................................................IV-1 Basic Procedure ......................................................................................................................IV-2 2.
CHAPTER I FEATURES AND SPECIFICATIONS 1. FEATURES This printer has the following features: 1200dpi Resolution and 10ppm Printing Speed 600 dots per inch (dpi) with microfine toner and ten pages per minute (ppm) printing speed (A4 or Letter size paper). The printer also supports 1200 (H) x 600 (V) dots per inch (dpi) resolution for Windows DIB graphics. ( It is recommended to add memory when printing in 1200 x 600dpi mode.
Low Running Cost: The toner cartridge is separate from the drum unit. You need to replace only the toner cartridge after around 2,200 pages, which is cost effective and ecologically friendly. Remote Printer Console Program for DOS The utility program, Remote Printer Console (RPC), is available on the floppy disk supplied with your printer.
2. SPECIFICATIONS 2.1 Printing Print method Electrophotography by semiconductor laser beam scanning Resolution 600 x 600dpi (for Windows/DOS) 300 x 300dpi (under Apple Macintosh using optional RS-100M) 1200 x 600dpi (Horizontal x Vertical) (for Windows DIB graphics) Print speed 10 page/minute (when loading Letter-size paper from the multipurpose sheet feeder 1) Warm-up Max. 30 seconds at 23°C (73.
2.3 Electrical and Mechanical Power source U.S.A. and Canada: Europe and Australia: Power consumption Printing: Standing by: Sleep: 280W or less 60W or less 13W or less Noise Printing: Standing by: 49dB A or less 38dB A or less Temperature Operating: Storage: 10 to 32.5°C (59 to 90.
2.4 Paper Specification (1) Multi-purpose sheet feeder loading < Sheet Feeder 1 (Front)> Paper size: A4, Letter, Legal, B5, A5, A6, and Executive, and other sizes of media that can be handled by the feed mechanism, can be loaded. 69.8 to 229 mm 105 to 406mm (face down) Feeding direction Feedable paper weight: Maximum load height : Envelopes : Setting method: 60 (16lb.) to 157 (42lb.
2.5 Print Delivery (1) With the output tray opened Tray capacity : Maximum 100 sheets (80g/m2), face-down only (2) With the output tray closed Tray capacity : 1 sheet (80g/m2), face-down only Note: Face down: Environment : 2.6 Deliver the printed face of the paper downward.
(2) Paper feed conditions Type Name 60 to 80 g/m Normal paper (cut sheet) Feeder Feeder 1 Feeder 2 2 2 80 g/m paper (Legal) 157 g/m 2 Labels { { { { { { { { { { (200 sheets) (200 sheets) (100 sheets) (100 sheets) (30 sheets) (30 sheets) ✕ (50 sheets) Special paper (cut sheet) Envelopes ✕ (10 sheets) Postcards ✕ (30 sheets) Organizers ✕ (10 sheets) 2.
The table below shows the effective printing areas. Size A4 Letter Legal B 5 (JIS) B 5 (ISO) Executive A5 A6 Organizer (J size) Organizer (K size) Organizer (L size) COM-10 MONARCH C5 DL A 210.0mm 8.27” (2,480 dots) 215.9mm 8.5” (2,550 dots) 215.9mm 8.5” (2,550 dots) 182.0mm 7.16” (2,149 dots) 176.0mm 6.93” (2,078 dots) 184.15mm 7.25” (2,175 dots) 148.5mm 5.85” (1,754 dots) 105.0mm 4.13” (1,240 dots) 69.85mm 2.75” (825 dots) 95.25mm 3.75” (1,125 dots) 139.7mm 5.5” (1,650 dots) 104.78mm 4.
3. SAFETY INFORMATION 3.1 Laser Safety (110 - 120V Model only) This printer is certified as a Class 1 laser product under the US Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968. This means that the printer does not produce hazardous laser radiation.
3.3 Caution for Laser Product (Warnhinweis für Laserdrucker) CAUTION: CAUTION: ACHTUNG: (1) When the machine during servicing is operated with the cover open, the regulations of VBG 93 and the performance instructions for VBG 93 are valid. In case of any trouble with the laser unit, please replace the laser unit itself. To prevent direct exposure to the laser beam, do not try to open the enclosure of the laser unit. Im Falle von Störungen der Lasereinheit muß diese ersetzt werden.
CHAPTER II THEORY OF OPERATION 1. ELECTRONICS 1.1 General Block Diagram Optional ROM (Max. 4Mbytes) External Device Fig. 2.1 shows a general block diagram of the HL-1060 printer. Optional I/F Board ( RS-232C) Optional RAM(SIMM) (Max.
1.2 Main PCB Block Diagram Fig. 2.2 shows the block diagram of the main PCB. A S I C CPU Core R3041 Reset Circuit BUS Oscillator (40MHz) INT Address Decoder DRAM Control Program + Font ROM (4Mbytes) Timer Optional ROM (Max. 4Mbytes) FIFO RAM DATA EXTENSION (2Mbytes) Parallel I/O Option RAM (SIMM) (Max. 32Mbytes) Software Support Option Serial I/O (RS232C & RS422A) EEPROM (512 x 8bits) EEPROM I/O Motor Driver Engine Control I/O To Panel Sensor PCB Fig. 2.
1.3 Main PCB 1.3.1 CPU Core Fig. 2.3. shows the CPU circuit block on the main PCB. The CPU is an IDT 79R3041-20J which is driven at a clock frequency of 20MHz. This clock frequency is made by dividing the source clock frequency of 40.0MHz by two. The address and data bus are both 32bits consisting of AD0 to AD31. The total addressable memory space is 4Gbytes. Fig. 2.
1.3.2 ASIC The ASIC is composed of a Cell Based IC that contains the following functional blocks. (1) Oscillator circuit Generates the main clock for the CPU by dividing the source clock frequency by two. (2) Address Generator Generates the address bus by latching the AD bus with the ALE signal. (3) Address decoder Generates the CS signal for each device.
(8) Parallel I/O There are two modes in this unit. One is the CPU receive mode and the other is the DMA receive mode. In the CPU receive mode the CPU receives the command data from the PC, and after the CPU is switched to the DMA mode, it receives the image data and writes it to the DRAM directly. CPU Receive Mode STROBE BUSY ACK 90 µsec 0.5 µsec 1.5 µsec 0.5 µsec DMA Receive Mode STROBE BUSY ACK BUSY goes HIGH at the falling edge of the STROBE signal.
(12) Engine control I/O This I/O is used for the connection to the driver PCB. It controls the main motor, solenoid, sensors, etc. Fig. 2.
1.3.3 ROM The program and the font data are stored in 4Mbytes of ROM. The ROM is composed of two 16Mbit masked ROMs which are mounted in 42-pin IC sockets. Fig. 2.5 1.3.4 Optional ROM The program and the font data are stored in 4Mbytes of ROM. The ROM is composed of two 16Mbit masked ROMs which are mounted in 42-pin IC sockets. Fig. 2.
1.3.5 DRAM Four 4Mbit DRAM (x 8bit) are used as the printer memory. Fig. 2.
1.3.6 Optional RAM A 32bit SIMM (72 pin) can be fitted as optional RAM. The main PCB has one slot and its capacity is for SIMM from 1Mbytes to 32Mbytes. Fig. 2.
1.3.7 Optional Serial I/O The interrupt of the serial I/O is input to the EXINT terminal of the ASIC, and recognized by the CPU. A 32-byte space for a register is provided for this I/O, which is read and written to by the CPU. Fig. 2.9 1.3.8 EEPROM The EEPROM is an X24C04F two-wire type with a 512 x 8bits configuration. Fig. 2.
1.3.9 Reset Circuit The reset IC is a PST591DMT. The reset voltage is 4.2V (typ.) and the LOW period of the reset signal is 50ms (typ.). Fig. 2.11 1.3.10 Parallel I/O Fig. 2.12 shows the parallel interface circuit. Fig. 2.
1.3.11 Engine I/O Fig. 2.13 shows the engine interface circuit. Fig. 2.
1.3.12 Paper Feed Motor Drive Circuit A DC motor is used for paper feeding. Fig. 2.14 1.4 Driver PCB The following parts are mounted on the driver PCB. • Connectors ..................Low-voltage, high-voltage, solenoid, main motor, toner sensor, laser, polygon motor, connector for main PCB • Registration sensor 1.5 SW Panel PCB The following parts are mounted on the SW panel PCB. • Operation panel ........
1.6 Power Supply 1.6.1 Low-voltage Power Supply The power supply uses a switching regulation system to generate the regulated DC power (+5V and +24V), which are converted from the AC line. (Heater) Thermal Fuse Lightning Fuse Surge Heater Absorber Circuit Lamp Fuse Feedback Line Filter Rectifier Oscillator (Driver Circuit) 24V 24V Regulation Circuit 5V Regulation Circuit Fig. 2.
1.6.2 High-voltage Power Supply, SR PCB This generates and outputs the voltages and currents for the charging, development and transfer functions.
2. MECHANICS 2.
2.2 Paper Transfer 2.2.1 Paper Supply The pick-up roller picks up one sheet of paper from the paper feeder every time it is rotated and feeds it to the paper feed roller. Pick-up roller Papers Registration sensor lever Hopper plate Separation pad Fig. 2.19 The paper is gripped between the pick-up roller and the separation pad and separated into individual sheets.
2.2.3 Paper Eject The completion of paper eject is detected in the following manner: (a) When the leading edge of the paper pushes down the eject sensor actuator located in the fixing unit, the photo sensor (photo interrupter) is opened and detects the start of paper eject. (b) When the trailing edge of the paper has passed through the paper eject sensor actuator, the photo sensor is closed and the completion of paper eject is recognized.
2.3 Sensors 2.3.1 Cover Sensor Detects opening and closing of the top cover. Top Cover Cover Switch Fig. 2.23 2.3.2 Toner Empty Sensor Detects if there is toner in the toner cartridge. It also detects whether or not the drum unit is installed. (The toner cartridge is installed in the drum unit). Toner Empty Sensor Fig. 2.
2.4 Drum Unit 2.4.1 Photosensitive Drum Generates the latent electrostatic image and develops the image on the drum surface. 2.4.2 Primary Charger Forms a uniform charge on the drum surface. (1) Corona wire Generates the ion charge on the drum. (2) Grid Spreads the ion charge evenly over the drum surface. 2.4.3 Developer Roller Develops the latent electrostatic image on the drum surface by the addition of the toner. 2.4.4 Transfer Roller Transfers the toner image to the paper from the drum surface. 2.4.
2.5.2 Exposure Stage After the drum is positively charged, it is exposed to the light emitted from the laser unit. Laser Beam Drum Paper Laser beam f lens Laser detector Polygon mirror Laser diode Motor Lens Fig. 2.26 The area exposed to the laser beam is the image to be printed. The surface potential of the exposed area is reduced forming the electrostatic image to be printed.
2.5.3 Developing Developing causes the toner to be attracted to the electrostatic image on the drum so as to transform it into a visible image. The developer consists of a non-magnetic toner. The development roller is made of conductive rubber and the supply roller which is also made of conductive sponge rotate against each other. The toner is charged and carried from the supply roller to the development roller.
2.5.5 Drum Cleaning Stage In the image transfer stage, not all the toner on the photosensitive drum is transferred onto the paper but some remains on the drum. In the drum cleaning stage, the drum surface is cleaned by the cleaning roller, so that residual toner on the drum surface is removed and collected on the cleaning roller itself. The residual toner on the cleaning roller will be discharged to the drum when starting or non-printing time.
CHAPTER III DISASSEMBLY AND REASSEMBLY 1. SAFETY PRECAUTIONS To avoid creating secondary problems by mishandling, be careful to follow the following precautions during maintenance work. (1) Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer. (2) Be careful not to lose screws, washers, or other parts removed. (3) Be sure to apply grease to the gears and applicable positions specified in this chapter.
4 B III-2 9 12 11 10 DRIVER PCB BASE PLATE ASSY MAIN PCB ASSY EXTENSION SUPPORT WIRE 20 SR PCB / RELAY PCB PAPER SUPPORT 7 A 19 A SCANNER UNIT C FIXING UNIT UNDER SHOOT ASSY 6 8 MP SHEET FEEDER ASSY TOP COVER OUTPUT TRAY ASSY DRUM UNIT 5 3 2 1 BOTTOM B 18 17 16 13 MAIN MOTOR ASSY DRIVE UNIT GEARS and SOLENOID C LOW-VOLTAGE PS PCB ASSY 15 14 FAN MOTOR HIGH-VOLTAGE PS PCB ASSY 2.
3. DISASSEMBLY PROCEDURE 3.1 Drum Unit (1) Open the top cover. (2) Lift out the drum unit. Drum unit Top cover Main cover Fig. 3.1 3.2 Output Tray ASSY (1) Press the hinges at the left and right ends of the output tray inwards to release the output tray from the main cover. Output tray Output tray Main cover Fig. 3.
3.3 Top Cover (1) Open the top cover. (2) Press the hinges at the left and right ends of the top cover inwards to release the top cover from the main cover. Note: If it is impossible to release the top cover in the above way, press the side of the top cover ( ) while pulling the side of the main cover ( ). Top cover Main cover Top cover Main cover Fig. 3.3 3.
(2) Raise the pick-up roller cover ( ) and remove it ( ). (3) Remove the MP feeder cover ( ). MP feeder cover Pick-up roller cover Fig. 3.5 (4) Remove the tray side covers R and L by releasing the three hooks inside each of the covers as the following order. Tray side cover R 1. Release the hook by hands. 2. Release the hook by using a screwdriver. 3. Release the hook by using a screwdriver. 4. Pull out the tray side covers straight.
PR98062 (5) After removing the sector gear, paper feed bearing, and bearing 6, take off the paper pick-up roller unit. Bearing 6 Paper feed bearing Sector gear Paper pick-up roller unit Fig. 3.7 (6) Note: Raise the pressure plate toward you and press both sides of the pad inward to release it by pressing the separation pad holder. Then take off the spring.
3.5 MP Sheet Feeder 2 ASSY (1) Remove the four screws. (2) Disassemble any other parts of MP sheet feeder 2 in the same way as described for MP sheet feeder 1. MP sheet feeder 2 Screws Screw Main cover Fig. 3.9 3.6 Under Shoot ASSY (1) Disconnect the two cable harnesses from the relay PCB. Under shoot ASSY Cable harness Relay PCB ASSY Fig. 3.
(2) Remove the two screws. (3) Lift the rear portion of the under shoot assy to remove it. Main cover Under shoot ASSY Fig. 3.11 Note: Follow the number above in order when assembling. Feed shaft roller Plate spring Fig. 3.11.
3.7 SR PCB / Relay PCB (1) Remove the SR protect sheet. (2) Disconnect the connector of the SR harness ASSY connecting the SR PCB and the driver PCB and remove the high-voltage cover. SR protect sheet High-voltage cover SR harness ASSY Main cover SR PCB Fig. 3.12 (3) Disconnect the connector of the relay harness ASSY connecting the SR PCB and the relay PCB and remove the two screws on the SR PCB, and remove the SR PCB. (4) Remove the relay PCB.
3.8 Fixing Unit (1) Remove the two screws. (2) Lifting the fixing unit, disconnect the two heater harnesses and the thermistor connector on the EL PCB. Screws Fixing unit Screws EL PCB Thermistor harness Thermistor connector Heater harness (White) Fig. 3.14 (3) Unhook the harness of the thermistor ASSY from the hook of the fixing unit. (4) Remove the screw. (5) Remove the thermistor ASSY. (6) Remove the cleaner ASSY. Fixing unit Cup B tight M3x14 Thermistor ASSY Hook Cleaner ASSY Fig.
Follow instructions below when installing the thermistor in the fixing unit. • Place the cleaner felt of the cleaner ASSY under the heat roller. • Place the end of the thermistor on the heat roller. • Insert the boss1 of the thermistor into the hole of the fixing unit frame. • Do not place the thermistor on the boss2 of the fixing unit frame. , , , , , , , , , , ,,,,,,,,,,, , , ,,,, , Note: Thermistor Boss2 Heat roller , ,, Boss1 Fixing unit frame Cleaner ASSY Fig. 3.
PR98292 (9) Release the cleaner lock from the cleaner ASSY HR. (10) Remove the cleaner ASSY HR from the fixing unit. Fixing unit Cleaner ASSY HR Screw Cleaner lock Fig. 3.18 (11) Release the right side of the paper eject roller shaft. (12) Remove the four eject pinch rollers and the pinch springs from the fixing unit frame. Then, remove the pinch spring from each pinch roller. Paper eject roller shaft Pinch Spring Eject Pinch Roller Fig. 3.
Note: Follow instructions below when installing the cleaner ASSY HR. • Put the cleaner ASSY HR on the heat roller. • Rotate the hook of the cleaner ASSY HR as shown in the figure to fit it into the fixing unit frame. • Insert the cleaner lock into the fixing unit frame. Cleaner ASSY HR , , , , , , , , , , , , , , , , Put the cleaner ASSY HR on the heat roller and rotate it in this direction to fit it into the hole.
3.9 Scanner Unit (1) Remove the three screws. (2) Lift out the scanner unit. Screws Screw Scanner unit Main cover Driver PCB Fig. 3.21 (3) Disconnect the three connectors from the driver PCB. (4) Remove the screw and the tape, and lift the toner sensor PCB from the scanner unit. Note: Never touch the inside of the scanner unit or the mirror when disassembling or reassembling. If there is any dirt or dust on the mirror, blow it off. Screw Toner sensor PCB Tape Scanner unit Fig. 3.
(5) Turn the scanner unit upside down and remove the screw to release the toner sensor harness. Screw Scanner unit Toner sensor harness Fig. 3.22-1 3.10 Main PCB ASSY (1) Remove the four screws. (2) Hold the hooks at left and right to pull out the main PCB ASSY. Screw Hook Main PCB ASSY Screws Hook Fig. 3.
3.11 Base Plate ASSY Note: Prior to turning the printer upside-down, ensure that the drum unit has been removed from the printer. (1) Turn the printer upside down. (2) Remove the five M4 and four M3 self tapping screws and one screw. Taptite, cup M3x2 Screw Taptite, cup M3x2 Taptite, bind M4x2 Taptite, cup M3x2 Base plate ASSY Soundproof sponge Fig. 3.24 (3) Lift the base plate ASSY and remove the grounding screw. Base plate ASSY Ground wire Screw Low-voltage power supply PCB ASSY Fig. 3.
Note: See the Fig. 3.26 about the position installing the dumping material and the soundproof sponge A,B. Dumping material Soundproof sponge A Soundproof sponge B Soundproof sponge A Fig. 3.26 3.12 Driver PCB ASSY (1) Remove the screw securing the driver PCB ASSY. (Slide the PCB A from underneath the main shield.) A Screw Main shield Driver PCB ASSY Driver PCB ASSY Insulation tape Fig. 3.
(2) 5 97-P-56 Disconnect the eleven connectors from the PCB. (Three connectors have already been disconnected when removing the scanner unit.) 4 3 8 1 9 10 11 12 13 Driver PCB ASSY (Name of the harnesses) 1. SW panel harness 2. Scan motor harness 3. Toner harness 4. Laser harness 5. Fan motor harness 7. Main connector 8. High-voltage flat cable 9. Erase lamp harness 10. SR harness 11. Solenoid harness 12. Main motor harness 13. Low-voltage harness 2 7 Main frame Fig. 3.
3.14 High-voltage Power Supply PCB ASSY (1) Remove the screw securing the high-voltage power supply PCB ASSY. (2) Disconnect the HV flat cable from the PCB. High-voltage power supply PCB ASSY Screw Density dial HV flat cable Main cover Fig. 3.30 Note: 3.15 When reassembling, the flat side of the density dial shaft must be aligned with the flat side of the density dial plastic adjustment cover. Fan Motor ASSY (1) Remove the screw securing the fan motor ASSY.
(3) Remove the two screws securing the fan motor. Fan motor SW panel PCB Screws Fan motor holder Fig. 3.32 3.16 Drive Unit (1) Unhook the heater harness from the drive unit. Heater harness Drive unit Hook Fig. 3.
(2) Release the hook to remove the gear cover. (3) Remove the six screws securing the drive unit. Lift the drive unit while pressing and releasing the static removal plate spring on the drive unit. Gear cover Screws Screws Drive unit Hook Gear cover Static removal plate spring Fig. 3.34 3.17 Main Motor ASSY (1) Remove the four screws securing the main motor ASSY. Drive unit Main motor ASSY Screws Fig. 3.
3.18 Gears and Solenoid Apply grease to the points shown below. K E G H E M L A H C H A A C A A Fig. 3.
Note: Sign A B C D E F G H J K L M N Follow instructions below when applying the grease. When applying the grease Before installing the gear. After installing the bending washer, and before installing the gear. Before installing the gear. After installing the drive unit on main body. After installing the drive unit on main body. Before installing the gear. Grease Dow Corning LTD. EM-30L Dow Corning LTD. EM-30L Application amount 1 rice-grain size 1 rice-grain size Dow Corning LTD.
3.19 Paper Support (1) Pull the paper support down toward you and pull both legs outwards to release it. MP sheet feeder 1,2 Paper support Fig. 3.37 3.20 Extension Support Wire (1) Raise the extension support wire toward you, press both legs inward to release it, and then release the paper stopper from the wire. Output tray Paper stopper Extension support wire Fig. 3.
4. PACKING Documents Carton, SF assy Dust cover Pad Pad PE sheet Bag Pad Pad Carton Fig. 3.
CHAPTER IV MAINTENANCE AND TROUBLESHOOTING 1. INTRODUCTION 1.1 Initial Check (1) Operating environment Check if : • The source voltage stays within ±10% from the rated voltage shown on the rating plate. • The printer is installed on a solid, level surface. • The room temperature is maintained between 10°C and 32.5°C. The relative humidity is maintained between 20% and 80%. • The printer is not located in a dusty place. • The printer is not exposed to ammonia fumes or other harmful gases.
If condensation has occurred, wipe the effected units or parts with a dry cloth. If the drum unit is unpacked soon after it is moved from a cold room to a warm room, condensation may occur inside the unit, which may cause incorrect images. Instruct the user to allow the unit to come to room temperature before unpacking it. This will take one or two hours. 1.
2.3 Periodical Replacement Parts No. 1 Description Part No.
3. IMAGE DEFECTS 3.
3.2 Troubleshooting Image Defects The following procedures should be followed in the event of specific image defects. See subsection 3.3 for information about the location of the high-voltage contacts and grounding contacts.
I-2 Dark Possible cause Step Check Result Remedy Density dial 1 Is the density dial at the center click position? No Corona failure (soiled wire) 2 Is the corona wire dirty? Yes Corona failure (contact failure) 3 No Drum unit failure 4 H.V.
I-3 Completely blank Possible cause Step Developing bias contact failure 1 Drum unit 2 Drum unit failure 3 Scanner harness connection failure 4 Main/Driver PCB connection failure 5 Scanner unit failure 6 Check Result Remedy Are the developing bias contacts between the printer body and drum unit dirty? Are the drum shaft and drum electrode of the printer body connected correctly? Yes Clean the electrodes at both sides.
I-4 All black Possible cause Corona failure Step Check Result Remedy 1 Is the corona wire of the drum unit broken? Are the electric terminal springs in the printer body and the electrode on the bottom face of the drum unit dirty? Is the scanner unit connected with the driver PCB correctly? Yes Replace the drum unit. Clean the terminals in the printer and on the drum. 2 Harness connection 3 H.V. power supply PCB Ditto 4 Main PCB 6 Driver PCB 7 5 Is the problem solved after H.V.
I-5 Dirt on the back of paper Possible cause Fixing unit Step 1 Dirt in the drum unit 2 Note: Check Is the pressure roller dirty? Is any other area in the printer dirty? Is the transfer roller dirty? is the problem solved after the drum unit replaced? Result Yes Remedy Clean the pressure roller. (See the following note.) Yes Replace the drum unit No Replace the H.V. power supply PCB. Cleaning of the pressure roller (1) Set three or more sheets of paper in MP sheet feeder 1 (or 2).
I-6 Black vertical streaks Possible cause Step Black and blurred vertical streaks Check Result Remedy Corona failure 1 Is the corona wire dirty? Yes Corona failure 2 Yes Dirt in the paper feed system 3 Yes Clean the toner off.
I-8 Black vertical streaks (in the gray background) Possible cause Translucent stain on the scanner window I-9 Step 1 Check Are there any stains? Result Yes Remedy Clean the scanner window. If it is not effective, replace the scanner unit. Result Yes Remedy Clean the scanner window with a dry tissue. Replace the drum unit.
I-11 Poor fixing Possible cause Printing paper Step 1 Check Is thick paper more than 36lb weight in use? Result Yes Toner sensing failure 2 Is the problem solved by replacing the drum unit or the toner cartridge? (When printing is faint.
I-13 Faint print o tnirp tset tuo tnirP o tnirp tset tuo tnirP tset tuo tnirp tset tuo tnirp tset tuo tnirP Print out test print out test print out test Print out test print o Print out test print o o tnirp tset tuo tnirP o tnirp tset tuo tnirP tset tuo tnirp tset tuo tnirp tset tuo tnirP Print out test print out test print out test Print out test print o Print out test print o o tnirp tset tuo tnirP o tnirp tset tuo tnirP tset tuo tnirp tset tuo tnirp tset tuo tnirP Print out test print out test pri
I-15 Black spots Possible cause Drum unit Step 1 Check Are the spots at 94mm intervals? The problem is not solved after printing a few pages. Result Yes Fixing unit 2 Yes SR PCB 3 Are the spots at 63mm intervals? And the problem is not solved after printing a few pages. Is the problem solved after the SR PCB replaced? Note: Yes Remedy If toner remains stuck, wipe it off gently with a cotton swab. Replace the drum unit if the OPC drum is scratched or deteriorated (exposed).
(3) Wipe the surface of the photosensitive drum with a cotton swab until the dust or paper powder on the surface toner lamp comes off. Separator Paper path Cleaning roller Toner cartridge Photo sensitive drum Fig. 4.4 Caution: Don't wipe the surface of the photosensitive drum with something sharp. (ballpoint pen etc.) Use the cleaning liquid which is mixed ethyl alcohol and pure water at the rate of each 50%.
I-16 Black bank Possible cause Drum unit Step 1 Check Is the wire cleaner positioned at its home position? Result No Yes I-17 Remedy Return the wire cleaner to its home position. Replace the drum unit. Gray background Possible cause Density dial Step 1 Print paper 2 Check Is the problem corrected by adjusting the density dial? Does the paper being used meet the paper specification (weight, etc.).
I-18 Hollow print Possible cause Print paper Step 1 Check Is thick paper of more than 42lb being used or extremely rough surface paper? Result Yes No I-19 Possible cause Drum unit SR PCB Remedy Recommend to use the specified type of paper. Refer and compare with I-14. Downward fogging of solid black Step 1 2 Check Is the problem solved after replacing the drum unit? Is the problem solved after replacing the SR PCB? CHAPTER IV -17 Result Yes Remedy Replace the drum unit.
I-20 Horizontal lines Possible cause Step Check Result SR electrode 1 Yes Clean both electrodes. SR connection failure 2 No Check the SR connection. Feed roller 3 Are the SR electrodes between the printer body and the drum unit dirty? Are the SR electrodes between the printer body and the drum unit connected correctly? Are the feed roller shaft and the ground contact connected correctly? No Check the connection between the shaft and the ground contact. I-21 HV.GND contacts (Fig.
3.3 Location of High-voltage Contacts and Grounding Contacts Grounding contacts c Drum shaft High-voltage contacts d Grounding wire e For transfer roller Drum unit f For cleaning roller k For supply roller g For grid i For development roller j Wire cleaner h For corona wire Fig. 4.
3.4 Location of Feed Roller Shaft and Grounding Contacts Feed shaft roller For feed roller Fig. 4.
4. PAPER JAM Problem Jam at power on Type of jam Paper stuck Cause The paper feed sensor of paper eject sensor is turned on. Top of paper stopped at 20mm from the fixing unit. The paper feed roller rotated twice. Top of paper stopped at 250mm from the fixing unit. Next paper is not fed. No paper The paper feed sensor is not turned on. 1) Jam caused by paper length considered longer than 400mm (16 inches).
5. TROUBLESHOOTING MALFUNCTIONS When carrying out countermeasures for malfunctions as described in this section, check connectors for contact failure before measuring the voltage at the specified connector pins. M-1 No AC power supplied Possible cause Supply voltage Step 1 Power plug 2 Fuse (F1, F2) 3 Wiring 4 M-2 Check Is the correct voltage present at the outlet? Is the power cord securely plugged into the outlet? is the fuse blown? Unplug the power supply plug.
M-3 Main motor unrotated Possible cause Failure of connector Main motor (M1) Driver PCB M-4 Step 1 2 3 Check Is the connection of connector P12 on the driver PCB correct? Disconnect connector P12 from the driver PCB. Measure the resistance between the connector pins of the main motor by using a circuit tester. Do the measured resistances satisfy the prescribed values in the table below? P12-1 and P12-3 Approx. 9 P12-4 and P12-6 Approx.
M-5 Insufficient output from high-voltage power supply unit Possible cause High-voltage contact Step 1 2 M-6 Result Yes Remedy Clean the high-voltage contact. Yes Replace the high-voltage power supply PCB. No Reconnect the harness between the high-voltage power supply and the driver PCB. Result Yes Remedy Clean the SR bias contact.
M-8 BD failure Possible cause Harness connection failure M-9 Step 1 Check Is connector P4 on the driver PCB secured correctly? Result No Remedy Connect it securely. Result No Remedy Reconnect the connectors securely.
F-1 Double feeding Possible cause Paper Step 1 Separation pad 2 F-2 Possible cause Paper Result No Check Is paper of a recommended type being used? Is the wrinkle problem solved if new paper is used? Result No Yes Remedy Instruct the user to use recommended types of paper. Replace the MP sheet feeder. Wrinkles Step 1 3 Is the entrance guide dirty? Yes Remedy Instruct the user to use the recommended types of paper. Instruct the user how to store paper so that it does not absorb moisture.
6. INSPECTION MODE 6.1 Incorporated Inspection Modes The printer incorporates various inspection modes such as the factory inspection mode and the test print mode. The inspection mode varies depending on the model of the printer. This printer supports a factory inspection mode, continuous grid pattern print mode, 3 patterns print mode and NV-RAM value dump mode. The operation of the inspection mode is as follows. (1) Turn off the power switch of the printer.
Feeder2 Drum Paper eject sensor Alarm Registration sensor Ready (Paper) Cover sensor Data (Toner) Toner sensor Switch Fig. 4.8 Paper eject sensor Registration sensor Cover sensor Toner sensor ON (Paper is detected.) OFF (No paper is detected.) ON (Paper is detected.) OFF (No paper is detected.) ON (The top cover is closed.) OFF (The top cover is open.) ON (The toner cartridge is installed.) OFF (No toner cartridge is installed.
6.2 Error Codes In the event of a printer failure, error codes will be indicated as shown below. All the lamps and the specific lamps are turned ON alternately. The specific combination of lamps that are ON indicates the type of the error.
PR99019 APPENDIX 1. SERIAL NO. DESCRIPTIONS The descriptions as below shows how to read labels on each place. < ID for production month > A: January B: February C: March D: April (1) E: F: G: H: May June July August J: K: L: M: September October November December Printer .........................on the main body D69505488 MONTH YEAR (2) SERIAL NO. FACTORY ID NO. Process unit ...............
A C I N P U T C N 2 L V P S H E A T E R P C B T R A N S F E R T H E R M I S T O R L A M P S O L E N O I D 1 B I N E R A S E S O L E N O I D S O L E N O I D 2 B I N R E S I S T C N 101 S R P 2 P 1 C L N S E N S O R E J E C T P C 0 0 1 T / R D R B P C B P C B R E L A Y C N 1 M M O T O R P 3 S R P 2 R S - 1 0 0 M P 2 P 1 D C P 1 S E R I A L G R I I / F P 1 R E S I S O L P 1 1 P 1 2 O P I O L A S E R M O T O R S C A N N E R S E N S O R F A N V O L T A G E E
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