FACSIMILE EQUIPMENT SERVICE MANUAL MODELS: MFC7420/7820N DCP7010/7020/7025 Confidential
© Copyright Brother 2004 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.
PREFACE This Service Manual is intended for use by service personnel and details the specifications, construction, theory of operation, and maintenance for the Brother machines noted on the front cover. It includes information required for troubleshooting and service--disassembly, reassembly, and lubrication--so that service personnel will be able to understand equipment function, repair the equipment in a timely manner and order spare parts as necessary.
CHAPTER 8 MAINTENANCE MODE Describes the maintenance mode which is exclusively designed for the purpose of checks, settings and adjustments using the keys on the control panel. In the maintenance mode, you can update memory (EEPROM: electrically erasable programmable read-only memory) contents for optimizing the drive conditions of the head/carriage unit, paper feed roller or paper ejection roller (if they have been replaced) or for setting the CIS scanner area, for example.
TABLE OF CONTENTS CHAPTER 1 PARTS NAMES & FUNCTIONS 1.1 EQUIPMENT OUTLINE.............................................................................................1-1 1.2 CONTROL PANEL ....................................................................................................1-2 1.3 COMPONENTS .........................................................................................................1-4 CHAPTER 2 2.1 SPECIFICATIONS GENGERAL.................................................
CHAPTER 5 5.1 DISASSEMBLY/REASSEMBLY AND LUBRICATION DISASSEMBLY/REASSEMBLY ...............................................................................5-1 Safety Precautions ........................................................................................................5-1 Tightening Torque.........................................................................................................5-2 Preparation ...............................................................................
5.1.24 Tail Edge Actuator..............................................................................................5-58 5.1.25 Regist Front Actuator/Regist Front Spring .........................................................5-58 5.1.26 Regist Sensor PCB ASSY..................................................................................5-59 5.1.27 Regist Rear Actuator/Regist Rear Spring...........................................................5-59 5.1.28 Fan Motor 60 Unit...........................
CHAPTER 7 CLEANING CHAPTER 8 MAINTENANCE MODE 8.1 ENTRY INTO THE MAINTENANCE MODE .............................................................8-1 8.2 LIST OF MAINTENANCE MODE FUNCTIONS........................................................8-2 8.3 USER-ACCESS TO THE MAINTENANCE MODE ...................................................8-3 8.4 DETAILED DESCRIPTION OF MAINTENANCE MODE FUNCTIONS ....................8-4 8.4.1 EEPROM Parameter Initialization (Function code 01/91) ....................
CHAPTER 9 9.1 ERROR INDICATION ................................................................................................9-1 9.1.1 9.1.2 9.2 ERROR INDICATION AND TROUBLESHOOTING Equipment Errors .................................................................................................9-1 [1] Error messages appearing on the LCD .......................................................9-1 [2] Error codes shown in the "MACHINE ERROR X X" messages...................9-5 Communications Errors.
APPENDIX 6 CIRCUIT DIAGRAMS NCU PCB: MFC7420 (U.S.A. and CANADA models) NCU PCB: MFC7820N (U.S.A. and CANADA models) NCU PCB: MFC7420 (EUROPE models) NCU PCB: MFC7820N (EUROPE models) Power Supply PCB 100V (U.S.A.
SAFETY PRECAUTIONS To use the MFC safely Please keep these instructions for later reference and read them before attempting any maintenance. NOTE: If there are faxes in the MFC's memory, you need to print them or save them before you turn off the power and unplug the MFC. (For MFC-7420) WARNING There are high voltage electrodes inside the MFC. Before you clean the inside of the MFC, make sure you have unplugged the telephone line cord first and then the power cord from the AC power outlet.
WARNING • When you move the MFC, grasp the side hand holds that are under the scanner. DO NOT carry the MFC by holding it at the bottom. • Use caution when installing or modifying telephone lines. Never touch telephone wires or terminals that are not insulated unless the telephone line has been disconnected at the wall jack. Never install telephone wiring during a lightning storm. Never install a telephone wall jack in a wet location.
CHOOSING A LOCATION Place your MFC on a flat, stable surface that is free of vibration and shocks, such as a desk. Put the MFC near a telephone wall jack and a standard, grounded AC power outlet. Choose a location where the temperature remains between 50°F and 90.5°F (10°C and 32.5°C). CAUTION • Avoid placing your MFC in a high-traffic area. • Do not place the MFC near heaters, air conditioners, water, chemicals, or refrigerators.
CHAPTER 1 PARTS NAMES & FUNCTIONS Confidential
CHAPTER 1 PARTS NAMES & FUNCTIONS This chapter contains external views and names of components and describes their functions. Information about the keys on the control panel is included to help you check operation or make adjustments. CONTENTS 1.1 EQUIPMENT OUTLINE ...................................................................................................1-1 1.2 CONTROL PANEL...........................................................................................................1-2 1.
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1.2 CONTROL PANEL MFC-7420 and MFC-7820N have similar control keys. 12 1 2 11 3 10 9 4 5 1. One-Touch Keys 8 6 7 6. Dial Pad Keys These 4 keys give you instant access to 8 previously stored numbers. Use these keys to dial telephone or fax numbers and as a keyboard for entering information into the MFC. The # key lets you temporarily switch the dialing mode during a telephone call from Pulse to Tone. 2.
5. Navigation Keys 11. Copy Keys (Temporary settings) Menu/Set The same key is used for Menu and Set operations. Lets you access the Menu to program and store your settings in the MFC. Enlarge/Reduce Lets you reduce or enlarge copies depending upon the ratio you select. Options You can quickly and easily select temporary settings for copying. When listening to the speaker in Fax mode or on standby, you can press these keys to adjust the volume. 12.
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CHAPTER 2 SPECIFICATIONS Confidential
CHAPTER 2 SPECIFICATIONS This chapter lists the specifications of each model, which enables you to make a comparison of different models. CONTENTS 2.1 2.2 GENERAL ........................................................................................................................2-1 2.1.1 General Specifications .........................................................................................2-1 2.1.2 Paper Specifications.......................................................................
2.1 GENERAL 2.1.
2.1.2 Paper Specifications (1) Paper type Paper type Manual feed slot Tray1 Select the paper type from the printer driver Plain paper 60 g/m2 to 105 g/m2 (16 to 28 lbs.) O O Plain paper Recycled paper O O Recycled paper Bond paper O O Bond paper X O Thick paper or Thicker paper O Up to 10 sheets A4 or Letter O Transparency Label X O Thicker paper Envelop X O Envelope or Env.Thick or Env.
(4) Recommended paper Europe USA 2 Plain paper Xerox Premier 80 g/m Xerox Business 80 g/m2 Modo Paper DATACOPY 80 g/m2 IGEPA X-press 80 g/m2 Xerox 4200DP 20lb Xerox 4024 28lb Hammermill Laser Paper 24lb Recycled paper Xerox Recycled Supreme N/A Transparency 3M CG3300 3M CG 3300 Label Avery laser label L7163 Avery laser label #5160 * This printer can use recycled paper that meets the DIN 19309 specification CAUTION: When you are choosing print media, be sure to follow the information given belo
2.1.3 Printable Area When using PCL emulation, the edges of the paper that cannot be printed on are shown below. Portrait F G Physical page Printable area Logical page E E D B G G B Physical page length D Maximum logical page length F Distance from edge of physical page to edge of logical page F G C A NOTE: • “Logical page” shows the printable area for a PCL driver. • “Printable area” shows mechanical printable area of the machine.
The table below shows the printable areas when printing on Portrait for each paper size. Size Letter Legal Folio Executive A4 A5 A6 B5 (JIS) B5 (ISO) B6 (ISO) COM10 MONARCH C5 DL DLL A B C D 215.9 mm 8.5” (2,550 dots) 215.9 mm 8.5” (2,550 dots) 215.9 mm 8.5” (2,550 dots) 184.15 mm 7.25” (2,175 dots) 210.0 mm 8.27” (2,480 dots) 148.5 mm 5.85” (1,754 dots) 105.0 mm 4.13” (1,240 dots) 182.0 mm 7.1” (2,130 dots) 176.0 mm 6.93” (2,078 dots) 125.0 mm 4.92” (1,476 dots) 104.78 mm 4.
Landscape F G Physical page Printable area E E Logical page D B G G G B Physical page length D Maximum logical page length F Distance from edge of physical page to edge of logical page F C A NOTE: • “Logical page” shows the printable area for a PCL driver. • “Printable area” shows mechanical printable area of the machine. • Therefore, the machine can only print within the shaded area when you use a PCL driver.
The table below shows the printable areas when printing on Landscape for each paper size. Size Letter Legal Folio Executive A4 A5 A6 B5 (JIS) B5 (ISO) B6 (ISO) COM10 MONARCH C5 DL DLL A B C D 279.4 mm 11.0” (3,300 dots) 355.6 mm 14.0” (4,200 dots) 330.2mm 13.0” (3,900 dots) 266.7 mm 10.5” (3,150 dots) 297.0 mm 11.69” (3,507 dots) 210.0 mm 8.27” (2,480 dots) 148.5 mm 5.85” (1,754 dots) 257.0 mm 10.11” (3,033 dots) 250.0 mm 9.84” (2,952 dots) 176.0 mm 6.93” (2,078 dots) 241.3 mm 9.
2.2 SPECIFICATIONS LIST MFC7420/7820N (1/15) ALL-FB1 US/Canada ALL-FB2 Europe Asia/Pacific US/Canada Europe MFC-7420 Model Name Asia/Pacific MFC-7820N GENERAL Print Engine Laser ( ALL) Laser ( ALL) CPU Speed SparcLite 133MHz SparcLite 133MHz 2hours Yes (up to 4 days) 10 - 32.5 degrees Centigrade 10 - 32.
(2/15) ALL-FB1 US/Canada ALL-FB2 Europe Asia/Pacific US/Canada MFC-7420 Model Name Europe Asia/Pacific MFC-7820N GENERAL Power Source 120V AC 50/60 (Canada)Hz 220-240V AC 50/60Hz 120V AC 50/60 (Canada)Hz 220-240V AC 50/60Hz 460W 460W AVERAGE 10W/75W/1032W AVERAGE 10W/75W/1032W Power Save ( CPU Sleep ) N/A N/A Sleep Mode (00-99min : w/ OFF mode) Yes Yes Power Consumption (Copying) Power Consumption (Sleep/Standby/Peak) Energy Star Compliant ( USA Only ) N/A Yes N/A Yes Total P
(3/15) ALL-FB1 US/Canada Model Name ALL-FB2 Europe Asia/Pacific US/Canada Europe Asia/Pacific MFC-7420 MFC-7820N Yes (with ▼ key) Yes (with ▼ key) N/A N/A TELEPHONE Telephone Index (Search) Pre-registered for FAX BACK SYSTEM ( USA ) Caller ID Yes N/A Yes (ARL/NZ/SIN/ HK only) Yes N/A Call Waiting Caller ID N/A N/A Call waiting Ready ( Only for USA ) N/A N/A Distinctive Ringing Yes Yes (U.K., Den. only) Yes (ARL/NZ/SIN/ HK only) Yes Yes (U.K., Den.
(4/15) ALL-FB2 ALL-FB1 US/Canada Europe Asia/Pacific US/Canada Europe Asia/Pacific MFC-7420 MFC-7820N up to 400 pages (ITU-T Test Chart, Standard Resolution, MMR) up to 500 pages ((Brother #1Chart, Standard Resolution, MMR) up to 500 pages (ITU-T Test Chart, Standard Resolution, JBIG) up to 600 pages ((Brother #1Chart, Standard Resolution, JBIG) Model Name FAX Memory Transmission (ITU-T Chart) ECM (Error Correction Mode) Yes Yes Error Re-Transmission Yes Yes Broadcasting Yes (258 locatio
(5/15) ALL-FB1 US/Canada Europe ALL-FB2 Asia/Pacific US/Canada Europe MFC-7420 MFC-7820N Cable included N/A N/A Acceptable Media Card Slot N/A N/A Model Name Asia/Pacific INTERFACE PRINTER Color/Mono Mono Mono Engine Type Laser (ALL) Laser (ALL) HQ1200 (2400x600dpi) HQ1200 (2400x600dpi) Resolution Speed(ppm) up to 20ppm (Letter size) up to 20ppm (Letter size) up to 20ppm (A4 size) N/A N/A Less than 10secs Less than 10secs Duplex Printing Speed (ppm) First Print Out Time up t
(6/15) ALL-FB1 US/Canada Model Name ALL-FB2 Europe Asia/Pacific US/Canada Europe Asia/Pacific MFC-7420 MFC-7820N 600 x 300 dpi 600 x 300 dpi COPY Resolution(dpi) Manual Duplex Copy N/A N/A N in 1 Yes Yes Poster Yes Yes Image Enhancement N/A N/A SCANNER Color Color Resolution (Hardware) 600 x 2400 dpi 600 x 2400 dpi Resolution (Interpolated) 9600 x 9600 dpi 9600 x 9600 dpi 256 256 Color/Mono Gray Scale 24 bit / 24 bit 24 bit / 24 bit Scan Key Yes Yes Scan Image Key N/
(7/15) ALL-FB2 ALL-FB1 US/Canada Model Name Europe Asia/Pacific US/Canada Europe MFC-7420 MFC-7820N Asia/Pacific BUNDLED SOFTWARE (For Windows) Yes (Download from Web Site) Yes (Download from Web Site) Network Print Software( LPR ) (*5) Yes Yes Network Print Software (NetBIOS/SMTP) N/A N/A 98/98SE/Me/2000/XP, Win NT4.0WS Driver with Auto Installer Program 98/98SE/Me/2000/XP, Win NT4.
(8/15) ALL-FB1 US/Canada Model Name Europe ALL-FB2 Asia/Pacific MFC-7420 US/Canada Europe Asia/Pacific MFC-7820N Optional NETWORK (*6) Model Name NC-2100P (Parallel external print server) / NC-2100P (Parallel external print server) / NC-2200w (Wireless USB server) NC-2200w (Wireless USB server) Share Printer NC-2100 : Yes / NC-2200w : Yes NC-2100 : Yes / NC-2200w : Yes Share Scanner NC-2100 : No / NC-2200w : Yes NC-2100 : No / NC-2200w : Yes Share PC FAX (Send) NC-2100 : No / NC-2200w : Yes
DCP7010/7020/7025 (9/15) ALL-DCP2 ALL-DCP1 US/Canada Model Name Europe Asia/Pacific DCP-7010 DCP-7020 Europe DCP-7025 GENERAL Print Engine Laser ( ALL) Laser ( ALL) CPU Speed SparcLite 133MHz SparcLite 133MHz N/A N/A 10 - 32.5 degrees Centigrade 10 - 32.
(10/15) ALL-DCP1 US/Canada Model Name Europe ALL-DCP2 Asia/Pacific Europe DCP-7010 DCP-7025 220-240V AC 50/60Hz 220-240V AC 50/60Hz DCP-7020 GENERAL Power Source 120V AC 50/60 (Canada)Hz 460W 460W 10W/75W/1032W 10W/75W/1032W Power Save ( CPU Sleep ) N/A N/A Sleep Mode (00-99min : w/ OFF mode) Yes Yes Power Consumption (Copying) Power Consumption (Sleep/Standby/Peak) Energy Star Compliant ( USA Only ) N/A Yes N/A Total Print pages Counter (Internal / LCD / Print) Yes / Yes/ Yes Y
(11/15) ALL-DCP1 US/Canada Model Name Europe ALL-DCP2 Asia/Pacific DCP-7010 DCP-7020 Europe DCP-7025 TELEPHONE Telephone Index (Search) N/A N/A Pre-registered for FAX BACK SYSTEM ( USA ) N/A N/A Caller ID N/A N/A Call Waiting Caller ID N/A N/A Call waiting Ready ( Only for USA ) N/A N/A Distinctive Ringing N/A N/A N/A N/A Modem Speed - - Transmission Speed - - ITU-T Group - - Coding Method - - Color FAX (Document Send / Receive) - - Color FAX (Memory Send / Receive)
(12/15) ALL-DCP1 US/Canada Model Name Europe ALL-DCP2 Asia/Pacific DCP-7010 DCP-7020 Europe DCP-7025 N/A N/A Polling Receiving - - Auto Reduction - - Duplex Fax Receive - - Out-of-Paper Reception (ITU-T Chart) - - PC Fax - - FAX LIST/REPORT Activity Report/Journal Report - - Transmission Verification Report - - Cover page - - Help List - - Call Back Message - - Caller ID List - - Quick Dial List - - Tel Index List - - Memory Status List - - System Setup (Us
(13/15) ALL-DCP2 ALL-DCP1 US/Canada Model Name Europe Asia/Pacific DCP-7010 DCP-7020 Europe DCP-7025 PRINTER Yes (35 True type Fonts) Yes (35 True type Fonts) LTR, LGL, LTR, A4, B5, LTR, LGL, A4, B5, A5, A5, A4, B5, A5, B6, A6, EXE B6, A6, EXE B6, A6, EXE LTR, A4, B5, A5, B6, A6, EXE Custom Size (2.75x4.56 - 8.5x16) Custom Size (2.75x4.56 - 8.
(14/15) ALL-DCP2 ALL-DCP1 US/Canada Model Name Europe Asia/Pacific DCP-7010 DCP-7020 Europe DCP-7025 MESSAGE CENTER/MESSAGE MANAGER TAD Type N/A N/A ICM Recording Time N/A N/A OGM (MC;MC Pro;Paging;F/T) N/A N/A Memo/Recording Conversation N/A N/A Toll Saver N/A N/A Remote Access N/A N/A Fax Retrieval N/A N/A Fax Forwarding N/A N/A Paging N/A N/A Yes Yes TWAIN (WIA for XP) Yes Yes Viewer (PaperPort 9.
(15/15) ALL-DCP2 ALL-DCP1 US/Canada Model Name PHOTO CAPTURE CENTER Europe Asia/Pacific DCP-7010 DCP-7020 Europe DCP-7025 N/A N/A Share Printer N/A N/A Share Scanner N/A N/A Share PC FAX (Send) N/A N/A Internet FAX (ITU T.
CHAPTER 3 THEORY OF OPERATION Confidential
CHAPTER 3 THEORY OF OPERATION This chapter gives an overview of the scanning and printing mechanisms as well as the sensors, actuators, and control electronics. It aids in understanding the basic principles of operation as well as locating defects for troubleshooting. CONTENTS 3.1 OVERVIEW ......................................................................................................................3-1 3.2 MECHANICAL COMPONENTS......................................................................
3.
3.
3.2.1 Scanner Mechanism This mechanism consists of the document cover, the scanner unit (scanner cover), and the automatic document feeder (ADF). The scanner unit consists of a scanner top cover, CIS unit, CIS drive assembly, and scanner base. The detailed illustration on the next page shows the components making up the ADF: document pull-in roller, document separation roller, document feed roller, ADF motor, and document front and rear sensors. For further details on the sensors, see Section 3.2.3.
Separate roller shaft ASSY Separate roller Suction roller Separation rubber ASSY Document rear actuator Document front actuator Separation roller shaft ASSY ADF motor Pressure roller Document Ejection roller Document cover LF roller Pressure roller Pressure roller Document rear actuator Document front actuator This scanner mechanism supports a dual scanning system: ADF scanning and flat-bed scanning.
(1) ADF scanning: Document moves across stationary CIS unit Placing a document face up in the document support activates the document front sensor, switching to ADF scanning. The CIS drive mechanism (details below) operates for each scanning command executed. The CIS unit first moves to the white-level reference film for white level compensation and then to the ADF scanning position. The ADF motor then rotates the document pull-in roller to pull the document into the ADF.
3.2.2 Printing Mechanism 3.2.2.1 Paper supply The feed roller picks up a few sheets or one sheet of paper from the paper tray every time it is rotated and feeds it to the separation roller.
(1) The paper is gripped between the separation roller and separation pad and separated into individual sheets. The separation roller is connected to the gear 52 P/R. (2) The section of the gear 52 P/R, where there is no cog, is normally fixed at the position as shown in the figure below by the P/R solenoid ASSY. (3) Therefore, the main motor drive is not transmitted to the gear 52 P/R. (4) When the paper is fed, the P/R solenoid ASSY is activated first.
3.2.2.2 Push-up function of paper tray In order to improve the transfer function of the paper tray, the pressure plate in the paper tray is lifted up by the motor. (1) The pressure plate comes down while the recording paper tray is inserted into the machine. When the main motor rotates, it drives through some gears to actuate the gear 45 arm/FR. The driving force that 45 arm/FR received is to be transferred to gear 13 center P/R, it then drives through some gears to gear 17.
Link lever Hook B Pickup roller holder ASSY Hook C Paper tray Sector cam Up plate gear Pressure plate Up plate Gear 17 < Table side > Hook C Hook spring Hook A Link lever Hook B Gear 13 center P/R Sector cam Rotated by approx. three quarters.
3.2.2.3 Paper registration After the paper top position is detected by the regist front actuator, the paper, separated into individual sheets by the separation roller, is fed further for a specified time, and the paper top position reaches the paper feed roller so that the paper skew is adjusted. Then, the F/R solenoid is turned off, the paper feed roller starts turning, and the paper is fed to the transfer roller in the drum/toner ASSY.
3.2.2.4 Paper eject After the printing image on the exposure drum is transferred onto the paper, the paper is fed to the fixing unit to fix unfixed toner onto the paper. Afterwards, the paper is ejected from the fixing unit by the heat roller and the pressure roller in the fixing unit. The paper eject actuator detects whether the paper is ejected correctly or not.
3.2.2.6 Toner cartridge Develops the electrostatic latent image on the exposure drum with toner and forms the visible image. Toner life end mode The life of the toner cartridge is starter: 1,500, standard: 2,500 pages at the 5% coverage. In the case of low- duty printing, “Toner Life End” is indicated by displaying the ‘Toner Life End’ message on the LCD before toner runs out because the developer roller surface or other toner sealing is worn out due to rotation of the rollers.
New toner detection mechanism The printer detects the amount of the remaining toner with the sensor and indicates the timing to replace the toner cartridge by displaying ‘Toner Life End’ on the LCD to the user. The problem such as toner leak or image defect may occur when low-duty printing is continued for a long time. To prevent such a problem, the printer provides the function displaying the ‘Toner Low’ message on the LCD when the toner is used to a certain degree to indicate it to the user.
When the new toner detection switch detects that the toner cartridge is replaced with a new one, the developing bias voltage is initialized at the same time. The toner used for the printer has a property that print density is light first and gradually darker in the course of usage. The developing bias controls the toner property so that the print density is constant from first to last.
3.2.2.7 Print process Charging The drum is charged to approximately 900V by an ion charge which is generated by the primary charger. The charge is generated by ionization of the corona wire, which has a DC bias from the high-voltage power supply applied to it. The flow of the ion charge is controlled by the grid to ensure it is distributed evenly on the drum surface. The aluminum drum sleeve in the exposure drum is grounded.
3. The laser beams reflected by the reflection mirror go straight toward the exposure drum below it, then expose the exposure drum. 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.
Transfer (1) (2) Transfer process After the drum has been charged and exposed, and has received a developed image, the toner formed is transferred onto the paper by applying a negative charge to the back of the paper. The negative charge applied to the paper causes the positively charged toner to leave the drum, and adhere to the paper. As a result, the image is visible on the paper.
3.2.
CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR Confidential
CHAPTER 4 TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR This chapter describes how to transfer data left in the machine to be sent for repair. The service personnel should instruct end users to follow the transfer procedure given in this chapter if the machine at the user site cannot print received data due to the printing mechanism defective. End users can transfer received data to another machine to prevent data loss. CONTENTS 4.1 TRANSFERRING RECEIVED FAX DATA..............................
4.1 TRANSFERRING RECEIVED FAX DATA When the machine at the user site requires to be repaired, unplugging the power cord from the wall socket for sending the machine for repair will lose received FAX data if unprinted and left in the machine. To prevent such data loss, the service personnel should instruct end users (e.g., by telephone) to transfer data to another facsimile machine using the procedure below. NOTE: The number of files that can be transferred at a time is 99.
Cover page sample End page sample 4 -2 Confidential
CHAPTER 5 DISASSEMBLY/REASSEMBLY AND LUBRICATION Confidential
CHAPTER 5 DISASSEMBLY/REASSEMBLY AND LUBRICATION This chapter details procedures for disassembling and reassembling the machine together with related notes. The disassembly order flow provided enables you to see at a glance the quickest way to get to component(s) involved. At the start of a disassembly job, you check the disassembly order flow that guides you through a shortcut to the object components.
5.1.18 High-Voltage PS PCB ASSY..............................................................................5-48 5.1.19 Main PCB ...........................................................................................................5-49 5.1.20 PS PCB Unit.......................................................................................................5-51 5.1.21 Laser Unit ...........................................................................................................5-54 5.1.
5.1 DISASSEMBLY/REASSEMBLY Safety Precautions To prevent the creation of secondary problems by mishandling, observe the following precautions during maintenance work. (1) Before starting disassembly/reassembly jobs, unplug the power cord and telephone line.
Tightening Torque Location of screw Side cover L Side cover R Ground wire Upper document chute Lower document chute ADF FG harness ADF motor Document cover ASSY Hinge ASSY L Hinge arm Panel unit NCU unit NCU FG harness NCU shield plate NCU PCB ASSY Rear cover stopper Inner chute Joint cover Fixing unit Halogen heater Thermistor ASSY High voltage PS PCB Screw type PS PCB Laser unit Air duct Sub chute ASSY Laser unit Air duct Sub chute ASSY Regist sensor PCB ASSY Base plate Toner sensor PCB Gear plate calki
Preparation Prior to proceeding with the disassembly procedure, (1) Unplug - the modular jack of the telephone line, - the USB cable, if connected (not shown below), and - the modular jack of the external telephone set if connected (not shown below). How to Access the Object Component • On the next page is a disassembly flowchart which helps you access the object components. To remove the fixing unit, for example, first find it on the flowchart and note its number (5.1.17 in this case).
Disassembly Flowchart 1 AC Cord 23 Drum/Toner ASSY 24 2 Link Lever 15 Tail Edge Actuator 16 Front Cover 3 25 Paper Tray Regist Front Actuator / Regist Front Spring 4 Pickup Roller Holder ASSY 26 Regist Sensor PCB ASSY 17 Fixing Unit Rear Cover 27 16 5 Rear Chute Cover Side Cover L Regist Rear Actuator / Regist Rear Spring Pickup Roller Holder ASSY 20 28 8 Fan Motor 60 Unit ADF Unit 29 9 Pull Arm / Pull Arm Guide / Lock Claw Pull Arm Spring Cover Sensor 33 Toner LED PCB ASSY /
5.1.1 AC Cord (1) Disconnect AC cord from the machine. Machine AC cord 5.1.2 Drum/Toner ASSY (1) Open the front cover and remove the drum/toner ASSY.
5.1.3 Paper Tray (1) Close the front cover and pull out the paper tray. (2) Remove the paper from the paper tray. Front cover Paper tray (3) Remove the separation pad holder ASSY and the separation pad spring.
5.1.4 Rear Cover (1) Remove the rear cover. NOTE: Remove the “A” section of the rear cover while opening the rear cover slightly.
5.1.5 Rear Chute Cover (1) Remove the rear chute cover. Boss Hook Rear chute cover Paper eject actuator Rear chute cover Rear chute cover (2) Remove the paper eject actuator and the eject actuator spring.
5.1.6 Side Cover L (1) Open the front cover. (2) Remove the two bind B M4x12 taptite screws, and then remove the side cover L.
5.1.7 Side Cover R (1) Remove the two bind B M4x12 taptite screws, and then remove the side cover R.
5.1.8 ADF unit (1) Open the ADF unit and scanner unit. (2) Remove the one cup S M3x6 taptite screw and ADF FG harness and FB FG harness. (3) Disconnect the two connectors of the ADF unit from the main PCB. (4) Disconnect the two connectors of the scanner unit from the main PCB.
(5) Close the ADF unit and scanner unit. (6) Remove the two pins and remove the ADF cover. ADF cover Pin Pin Scanner unit (7) Release the two hooks from the ADF cover and remove the pressure roller ASSY. (8) Remove the two LF springs from the ADF cover.
(9) Remove the two pressure rollers from the pressure roller shaft. Pressure roller shaft Pressure roller (10) Open the ADF unit. (11) Release the hook to remove the gear cover from the ADF unit.
(12) Close the ADF unit. (13) Remove the separate roller shaft ASSY and bushing from the ADF unit. Separate roller shaft ASSY Rib Separate roller bushing ADF unit (14) Remove the four cup B M3x10 taptite screws. (15) Release the three hooks “A” to remove the upper document chute.
(16) Remove the separation rubber ASSY from the upper document chute. Separation rubber ASSY “A” ADF plate spring “A” Hook 1 3 2 Upper document chute Hooks (17) Remove the separation rubber from the ADF plate spring.
(18) Remove the two cup B M3x10 taptite screws from the lower document chute. (19) Release the two hooks to remove the lower document chute. NOTE: When re-connecting the connectors, put them through the holes on the ADF unit before connecting. Taptite, cup B M3x10 Lower document chute Hook 2 1 Taptite, cup B M3x10 Hook Hook ADF unit Ribs Ribs (20) Release the hook on the ADF unit and remove the ejection roller ASSY.
(21) Remove the two ejection rollers from the pressure roller shaft. Pressure roller shaft Ejection roller Ejection roller (22) Remove the ADF unit ejection spring from the ADF unit.
(23) Release the two hooks and remove the resin bearing. (24) Remove the LF roller ASSY from the lower document chute. LF roller ASSY 1 4 1 Hooks Lower document chute 3 Resin bearing 2 (25) Release the two hooks “A” and remove the the ejection roller ASSY from the lower document chute. (26) Release the two hooks “B” and remove the ejection roller bearing from the ejection roller ASSY.
(27) Remove the two cup B M3x10 taptite screws and one cup S M3x6 taptite screw from the lower document chute. (28) Remove the drive frame ASSY from the lower document chute. Lower document chute Taptite, cup S M3x6 ADF FG harness 1 2 Drive frame ASSY Taptite, cup B M3x10 (29) Remove the one bind S M3x6 taptite screw from the drive frame ASSY to remove the ADF motor. (30) Remove the ADF motor harness from the ADF motor.
NOTE: When re-assembling drive frame ASSY, assemble it so that the arm ASSY is at the top. Drive frame ASSY Arm ASSY (31) Remove the document rear actuator from the lower document chute.
(32) Remove the document front actuator from the lower document chute. Document front actuator Hook Lower document chute 1 3 2 (33) Release the two hooks “A” on the lower document chute to remove the ADF sensor PCB ASSY. (34) Remove the ADF sensor harness ASSY.
(35) Turn the lower document chute upside down. (36) Remove the pins and remove the document hold. (37) Remove the document spring from the lower document chute. Hooks Document hold Document spring 1 Hook Pin 3 2 Pin 1 Lower document chute (38) Open the ADF unit. (39) Remove the one bind B M4x12 taptite screw from the document cover sub ASSY. (40) Release the hook to remove the document cover ASSY.
(41) Remove the two springs. (42) Remove the pressure roller ASSY. Spring Pressure roller ASSY Spring Document cover sub ASSY (43) Remove the two pressure rollers from the pressure roller shaft.
(44) Remove the three cup B M3x10 taptite screws to remove the hinge ASSY L. (45) Remove the hinge from the hinge arm. (46) Remove the one bind B M4x12 taptite screw to remove the hinge arm.
5.1.9 Pull Arm/Pull Arm Guide/Lock Claw Pull Arm Spring (1) Open the scanner unit. (2) Release the hook to remove the scanner unit side of the pull arms (R, L). Scanner unit Hook Pull arm (R) Hook Machine Pull arm (L) (3) Remove the pull arm springs and remove the pull arms (R, L) from the pull arm guides.
5.1.10 Scanner Unit (1) Disconnect the flat cable from the main PCB. (2) Remove the scanner unit from the machine. Scanner unit Machine Flat cable 5.1.11 Panel Unit (1) Remove the four cup B M3x10 taptite screws from the scanner unit. (2) Release the four hooks.
(3) Disconnect the connector from the panel PCB ASSY. (4) Release the three hooks to remove the panel unit from the scanner unit. Panel PCB ASSY Panel harness ASSY Panel unit 1 3 2 Scanner unit Hooks (5) Remove the LCD harness from the panel PCB. (6) Release the three hooks “A” to remove the panel PCB from the panel cover.
(7) Remove the rubber key. NOTE: When re-assembling the rubber key, make sure that the key works correctly. Rubber key Panel cover Bosses Bosses Bosses Bosses (8) Release the two hooks “A” to remove the backlight guide.
(9) Remove the diffusion film. Diffusion film Panel cover Bosses (10)Release the two hooks “A” to remove the LCD.
5.1.12 NCU PCB (1) Remove the two bind B M4x12 taptite screws and one pan (S/P washer) M3.5x6 screw from the NCU unit. Screw, pan (S/P washer) M3.5x6 Taptite, bind B M4x12 NCU FG harness NCU unit Machine (2) Remove the one pan (S/P washer) M3.5x6 screw from the NCU shield cover to remove the NCU shield plate. NCU shield plate Screw, pan (S/P washer) M3.
(3) Remove the NCU harness ASSY. (4) Remove the two cup S M3x6 taptite screws from the NCU shield cover to remove the NCU PCB ASSY. Taptite, cup S M3x6 NCU PCB ASSY NCU harness ASSY 1 2 NCU shield cover 5.1.13 Speaker (1) Disconnect the connector of the speaker from the main PCB.
(2) Release the three hooks to remove the speaker cover. Speaker cover Hook Hooks 3 4 4 2 1 Machine (3) Release the one hook to remove the speaker hold spring.
(4) Remove the speaker ASSY. Speaker ASSY Machine 5.1.14 Joint Cover ASSY /Paper Stopper/Battery ASSY (1) Remove the bind B M4x12 taptite screw, and then remove the rear cover stopper.
(2) Remove the two bind B M4x12 taptite screws and the rear chute cover spring. (3) Remove the inner chute. Inner chute Taptite, bind B M4x12 Rear chute cover spring Taptite, bind B M4x12 NOTE: Re-assemble the inner chute while pushing onto the pinch roller of the inner chute with the eject roller of the joint cover ASSY.
(4) Remove the battery ASSY and disconnect the connector. Joint cover ASSY Battery ASSY CAUTION: • There is a danger of explosion if the battery is incorrectly replaced. • Do not replace the battery. • Do not disassemble, recharge or dispose of in fire. • Used battery should be disposed of according to local regulations. (5) Remove the four bind B M4x12 taptite screws, and then remove the joint cover ASSY.
5.1.15 Front Cover (1) Release the hook of the drive release cam from the front cover ASSY. Hook Front cover ASSY Drive release cam Front cover ASSY (2) Release the hook “A” on the front cover ASSY from the chute. (3) Slide the front cover ASSY to the direction of the arrow shown in the figure below to remove it.
(4) Remove the paper stopper L. Paper stopper L Front cover (5) Remove the paper stopper S from the paper stopper L.
5.1.16 Pickup Roller Holder ASSY (1) Turn the printer upside down. (2) Remove the six bind B M4x12 taptite screws, and then remove the chute base. Taptite, bind B M4x12 (A) Taptite, bind B M4x12 (B) Taptite, bind B M4x12 Taptite, bind B M4x12 Chute base FG harness ASSY 5 Printer top side (Printer body upside down) NOTE: When re-assembling the chute base, check that the bind B M4x12 taptite screws (A) and (B) shown in the figure above are secured correctly.
Take the Drum/Toner Unit out from the printer. Check that the distance between the floor and the separation roller collar of the pickup roller holder ASSY is 45.5 to 47.5mm by using the plate jig. If not, re-assemble the chute base. Separation roller collar Pickup roller holder ASSY (Separation roller) Plate jig Floor 45.5 to 47.5mm 45.5mm B [A] is contacted with the roller. [B] is not contacted with the roller. A Pickup roller holder ASSY (Separation roller) 5 -3 9 45.
(3) Remove the spring extension P/R from the gear 52 P/R. (4) Release the hook and remove the gear 52 P/R. Hook Printer top side (Printer body Upside down) F/R roller shaft ASSY Spring extension P/R Main frame L Gear 52 P/R (5) Remove the bush F/R. (6) Remove the F/R roller shaft ASSY.
(7) Remove the link lever from the hook of the pickup roller holder ASSY. (8) Remove the pickup roller holder ASSY. Pickup roller holder ASSY Printer top side (Printer body upside down) Chute Pickup roller holder ASSY Hook 1 2 Link lever NOTE: The pickup roller holder spring is assembled on the bottom of the pickup roller holder ASSY. Be careful not to lose the spring.
5.1.17 Fixing Unit (1) Disconnect the heater harness connector and thermistor harness connector. (2) Remove the two cup B M4x12 taptite screws, and then remove fixing unit. Taptite, cup B M4x12 Fixing unit 1 Taptite, cup B M4x12 Heater harness 3 2 Thermistor harness NOTE: Be sure not to touch the pressure roller. (3) Remove the two PR spring. (4) Remove the pressure roller ASSY (pressure roller, PR arm ASSY, PR bush) from the fuser frame.
(5) Remove the two PR arm ASSY and two PR bush from the pressure roller. PR arm ASSY Pressure roller PR bush PR bush PR arm ASSY (6) Release each hook of the springs from the fuser frame and remove the four separate claw ASSYs. NOTE: Be careful not to damage the heat roller when removing the separate claw ASSY. Fuser frame Heat roller Separate claw ASSY 1 2 Separate claw ASSY Align the separate claw ASSY with the shape of the fuser frame to remove.
(7) Remove the two pan (S/P washer) M3x8 screws. (8) Remove the heat roller. (9) Remove the halogen heater.
NOTE: When re-assembling the heat roller, assemble the HR bush onto the fuser frame referring to the figure below. Heat roller HR bush Fuser frame NOTE: When re-assembling the halogen heater, put the halogen heater onto the fuser frame so that the terminal of the heater harness is at the top, and secure the screws in the order shown in the figure below.
(10) Remove the HR gear. (11) Remove the two HR bush. Heat roller HR bush Hooks HR gear HR bush HR gear Return the hook to the original position. Return the hook to the original position. (12) Remove the thermistor ASSY harness from the four hooks. (13) Remove the cup B M3x12 taptite screw, and then remove the thermistor ASSY.
NOTE: When re-assembling the thermistor ASSY to the fuser frame, ensure the direction of the thermistor ASSY is correct referring to the figure below; Fuser frame Heat roller Taptite, cup B M3x12 Thermistor ASSY 5 -4 7 Confidential
5.1.18 High-Voltage PS PCB ASSY (1) Disconnect the three connectors from the high-voltage PS PCB ASSY. (2) Disconnect the high-voltage PS PCB harness from the main PCB. High-voltage PS PCB ASSY High-voltage PS PCB harness Toner sensor PCB harness P/R solenoid harness F/R solenoid harness (3) Remove the two bind B M4x12 taptite screws and the two cup S M3x6 taptite screws. (4) Remove the high-voltage PS PCB from main frame L.
5.1.19 Main PCB < DCP7010/7020/7025, MFC7420 > (1) Disconnect the thirteen connectors from the main PCB. Control panel connector NCU connector LD harness 5P connector Polygon motor connector (LV harness ASSY) Cover sensor connector Speaker connector Main PCB New toner sensor connector HVPS connector (It has been taken back.) Main motor connector Battery connector Thermistor relay harness Fan motor 60 unit connector LVPS connector (2) Remove the five cup S M3x6 taptite screws and FG harness ASSY 6.
< MFC7820N > (1) Disconnect the thirteen connectors from the main PCB. Control panel LD harness 5P NCU connector Polygon motor connector (LV harness ASSY) Cover sensor connector Speaker connector New toner sensor connector Main PCB HVPS connector (It has been taken back.) Main motor connector Battery connector Thermistor relay harness Fan motor 60 unit connector LVPS connector (2) Remove the five cup S M3x6 taptite screws and FG harness ASSY 6. (3) Remove the two flat S M3x8 taptite screws.
5.1.20 PS PCB Unit (1) Remove the duct film. (2) Remove the pan (S/P washer) M3.5 x 6 screw and FG harness ASSY 1. (3) Remove the pan (S/P washer) M3.5 x 6 screws and FG harness ASSY 5. (4) Remove the pan (S/P washer) M3.5 x 6 screws and NCU FG harness. (5) Remove the two cup S M3x6, taptite screws. (6) Remove the LV shield plate cover from the main frame R. Duct film FG harness ASSY 5 Screws, pan (S/P washer) M3.5x6 NCU FG harness Main frame R Screws, pan (S/P washer) M3.
(8) Remove the pan (S/P washer) M3.5x6 screw, and then remove the ground wire. (9) Remove the bind B M4x12, taptite screw, and then remove the LV shield plate. Main frame R LV shield plate Ground wire Screws, pan (S/P washer) M3.5x6 Taptite, bind B M4x12 (10)Remove the two flat S M3x8, taptite screws, and then remove the inlet harness ASSY.
(11) Remove the two cup S M3x6 taptite screws. (12) Disconnect the three connectors from the PS PCB unit, and then remove the PS PCB unit. Main frame R LV shield plate PS PCB unit Taptite, cup S M3x6 Taptite, cup S M3x6 NOTE: When disconnecting the connectors, disconnect the regist sensor PCB connector and toner LED PCB unit ASSY connector first, lift up the PS PCB unit from the LV shield plate, and disconnect the main PCB connector.
5.1.21 Laser Unit (1) Remove the cup S M3x6, taptite screw (A) and FG harness ASSY 6. (2) Remove the four cup S M3x6, taptite screws (B). (3) Remove the laser unit.
(4) Remove the filter ASSY from the air duct. (5) Remove the two cup S M3x6, taptite screws, and then remove the air duct. Filter ASSY Taptite, cup S M3x6 Laser unit Air duct Taptite, cup S M3x6 Hook NOTE: • When replacing the laser unit, replace the barcode label attached on the gear plate calking ASSY with a new one supplied with a new unit. • Another barcode label supplied with a new unit is spare. Make sure to throw it out.
5.1.22 Sub Chute ASSY (1) Remove the two bind B M4x12, taptite screws, and then remove the sub chute ASSY.
5.1.23 Link Lever (1) Turn the printer body upside down. (2) Pull the “A” section outwards and remove the link lever. Link lever 2 1 1 “A” Printer top side (Printer body upside down) NOTE: When re-assembling the link lever, insert the end of the link lever into the main frame L referring to the figure below. Hook B Link lever Main frame L Chute * The figure seen from the left side.
5.1.24 Tail Edge Actuator (1) Remove the tail edge actuator with the tail edge spring. (2) Remove the tail edge spring from the tail edge actuator. Tail edge actuator 3 Tail edge spring 4 2 Chute 1 Printer top side (Printer body upside down) 5.1.25 Regist Front Actuator/Regist Front Spring (1) Remove the regist front actuator with the regist front spring. (2) Remove the regist front spring from the regist front actuator.
5.1.26 Regist Sensor PCB ASSY (1) Remove the bind B M3x6, taptite screw. (2) Release the harness from the hook and remove the regist sensor PCB ASSY. Taptite, bind B M3x6 Regist sensor PCB ASSY Chute Hooks Printer top side (Printer body upside down) 5.1.27 Regist Rear Actuator/Regist Rear Spring (1) Remove the regist rear spring. (2) Remove the regist rear actuator.
5.1.28 Fan Motor 60 Unit (1) Remove the three bind B M4x12, taptite screws and three FG harness ASSY 1, 4, 5. (2) Remove the base plate. Taptite, bind B M4x12 FG harness ASSY 4 Base plate FG harness ASSY 1 FG harness ASSY 5 Fan motor 60 unit harness Printer top side (Printer body upside down) Hooks Hooks Chute (3) Release the harness from the hook, and then remove the fan motor 60 unit from the main frame R.
5.1.29 Toner LED PCB ASSY/LED Holder (1) Remove the toner LED PCB ASSY from the main frame R. Main frame R Hooks 1 1 2 Toner LED PCB ASSY (2) Remove the LED holder from the toner LED PCB ASSY.
5.1.30 New Toner Actuator/New Toner Actuator Spring (1) Remove the new toner actuator spring. (2) Release the hook and remove the new toner actuator from the main frame L. Main frame L New toner actuator spring New toner actuator Hook 5.1.31 New Toner Sensor (1) Release the two hooks and remove the new toner sensor from the main frame L.
5.1.32 Cover Sensor (1) Release the two hooks and remove the cover sensor from the main frame L. Hook Cover sensor 1 1 Hook Cover sensor 2 Main frame L 5.1.33 Toner Sensor PCB ASSY (1) Remove the cup B M3x6, taptite screw, and then remove the toner sensor PCB ASSY.
5.1.34 Main Motor ASSY (1) Remove the HVPS insulation sheet. (2) Remove the five bind B M4x12, taptite screws, and then remove the gear plate calking ASSY. Main frame L Gear plate calking ASSY Taptite, bind B M4x12 HVPS insulation sheet Taptite, bind B M4x12 (3) Remove the three cup S M3x6, taptite screws, and then remove the main motor ASSY.
5.1.35 Develop Joint (1) Remove the develop joint from the gear plate calking ASSY. Develop joint Gear plate calking ASSY 5.1.36 P/R Solenoid ASSY (1) Remove the bind B M3x10, taptite screw. (2) Remove the P/R solenoid ASSY, the P/R solenoid lever and the solenoid release spring P/R.
5.1.37 F/R Solenoid ASSY (1) Remove the gear ASSY from the main frame L. Gear ASSY Main frame L NOTE: The gear ASSY contains the small gears. Be careful not to lose them by disassembling the gear ASSY.
(2) Remove the bind B M3x10, taptite screw. (3) Remove the F/R solenoid ASSY, the F/R solenoid lever and the solenoid release spring F/R.
5.1.38 Main Frame L (1) Remove the two bind B M4x12, taptite screws, and then remove the main frame L.
5.1.39 Main Frame R (1) Remove the three bind B M4x12, taptite screws, and then remove the main frame R.
5.1.
3 FG harness ASSY 6 Laser unit Hole FG harness ASSY 6 Main PCB 4 Regist sensor PCB ASSY PS PCB unit Printer top side (Printer body upside down) Hole Hook Regist sensor PCB ASSY Hook Rib 5 -7 1 Rib Chute Confidential
5 Fan motor 60 unit Hole Hook Hooks Hooks Hole Main PCB Fan motor 60 unit Hole Printer top side (Printer body upside down) 6 Toner LED PCB ASSY Hook Regist sensor PCB harness PS PCB unit FG harness ASSY 5 Toner LED PCB ASSY Hole Binder 5 -7 2 Confidential
7 Toner sensor PCB ASSY High-voltage PS PCB ASSY Toner sensor PCB ASSY Hook 8 P/R solenoid ASSY / F/R solenoid ASSY High-voltage PS PCB ASSY Hook F/R solenoid ASSY Hook 5 -7 3 P/R solenoid ASSY Confidential
9 New toner sensor / Cover sensor / Battery harness Hole Holes Hole New toner sensor Cover sensor Rib Hook Main PCB Battery harness 10 Panel unit Document scanner Panel unit Panel PCB Hook Hook Hooks Main PCB 5 -7 4 Confidential
11 12 ADF unit ADF motor ADF FG harness Document scanner Document scanner ADF sensor PCB Hooks FFC CIS harness Hole Hole Hole ADF unit Hole FB motor harness Document scanner FB FG harness Hole Hole Main PCB Main PCB Joint cover ASSY Joint cover ASSY 5 -7 5 Confidential
13 NCU PCB NCU PCB Hole Main PCB 14 NCU FG harness NCU FG harness NCU FG harness Hole NCU unit LV shield unit Joint cover ASSY 5 -7 6 Confidential
15 Speaker ASSY Joint cover ASSY Main PCB Hook Ribs Hook Rib Hook Rib Front Main PCB Speaker ASSY Joint cover ASSY 5 -7 7 Confidential
5.2 LUBRICATION Pendulum gear 22/50 Gear plate calking ASSY MU4 DEV drive gear MU4 * BG4: KANTO KASEI BG- MU (4 mm dia. Ball) Pickup roller holder ASSY PG2 * PG2: PG- 661 (2 mm dia.
CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT Confidential
CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT This chapter details adjustments and updating of settings, which are required if main PCB and some other parts have been replaced. CONTENTS 6.1 6.2 IF YOU REPLACE THE MAIN PCB................................................................................ 6-1 [1] Load update programs/data ........................................................................
6.1 IF YOU REPLACE THE MAIN PCB [1] Load update programs/data If the main PCB is replaced with a new one, write the update programs/data onto the flash ROM. Refer to Appendix 2, page App. 2-2. [2] Initialize the EEPROM on the main PCB (Function code 01) Refer to Chapter 8, Section 8.4.1. [3] Customize the EEPROM on the main PCB (Function code 74) Refer to Chapter 8, Section 8.4.14. [4] Check the control panel PCB for normal operation (Function code 13) Refer to Chapter 8, Section 8.4.8.
6.2 IF YOU REPLACE THE LASER SCANNER UNIT ASSY [ 1 ] Inputting the adjusted value of the laser scanner (1) Double-click the brmainte.EXE file (maintenance utility). (2) Select Input Information from Menu. Select the applicable model name. (3) Check the port (USB) which the machine is connected through. (4) Select ‘Adjust Scanner’ from Menu. Enter the figures (the last four digits) shown on the label attached on the chassis at the right hand side of the main PCB into the box at the right hand side. 6.
CHAPTER 7 CLEANING Confidential
CHAPTER 7 CLEANING For the cleaning procedures of the drum unit and toner cartridge, refer to the User's Guide.
CHAPTER 8 MAINTENANCE MODE Confidential
CHAPTER 8 MAINTENANCE MODE This chapter describes the maintenance mode which is exclusively designed for the purpose of checks, settings and adjustments using the keys on the control panel. You can customize the EEPROM according to the shipment destination of the machine concerned. In addition, you can perform operational checks of the LCD, control panel PCB or sensors, perform a print test, display the log information or error codes, and modify firmware switches (WSW). CONTENTS 8.
8.1 ENTRY INTO THE MAINTENANCE MODE MFC7420/7820N Press the Menu/Set and Start keys. Next press the the maintenance mode. key four times to make the machine enter TIP: FAX models equipped with numerical keypads can enter the maintenance mode in the same way as conventional models; that is, by pressing the Menu/Set, *, 2, 8, 6 and 4 keys in this sequence. DCP7010/7020/7025 Press the Menu and Start keys. Next press the maintenance mode.
8.2 LIST OF MAINTENANCE-MODE FUNCTIONS Maintenance-mode Functions Function Code Function Reference Section (Page) 01 EEPROM Parameter Initialization 8.4.1 (8-5) 05 Printout of Scanning Compensation Data 8.4.2 (8-6) 06 Placement of CIS Unit Position for Transportation 8.4.3 (8-8) 08 ADF Performance Test 8.4.4 (8-9) 09 Test Pattern 1 8.4.5 (8-10) 10 Firmware Switch Setting 8.4.6.1 (8-11) 11 Printout of Firmware Switch Data 8.4.6.2 (8-14) 12 Operational Check of LCD 8.4.
8.3 USER-ACCESS TO THE MAINTENANCE MODE Basically, the maintenance-mode functions listed on the previous page should be accessed by service personnel only. However, you can allow end users to access some of these under the guidance of service personnel (e.g., by telephone). The user-accessible functions (codes 06, 09, 10, 11, 12, 53, 54, 80, 82 and 87) are shaded in the table given on the previous page. Function code 10 accesses the firmware switches, each of which has eight selectors.
DCP7010/7020/7025 (1) Press the Menu, Start, Menu, and keys in this order. The "MAINTENANCE **" appears on the LCD. (2) Press the Start key several times to display the desired maintenance code on the LCD. Then press the Set key. (3) To make the machine return to the standby state, press the Stop/Exit key. When each of the user-accessible functions is completed, the machine automatically returns to the standby state.
8.4 DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS 8.4.1 EEPROM Parameter Initialization (Function code 01/91) Function The machine initializes the parameters, user switches, and firmware switches registered in the EEPROM, to the initial values. Entering the function code 01 initializes all of the EEPROM areas, but entering 91 does not initialize some areas, as listed below. Function code 01 Data item Maintenance-mode functions User switches Firmware switches 91 These will be initialized.
8.4.2 Printout of Scanning Compensation Data (Function code 05) Function The machine prints out the white and black level data for scanning compensation. Operating Procedure Do not start this function merely after powering on the equipment but start it after carrying out a sequence of scanning operation. Unless the equipment has carried out any scanning operation, this function cannot print out correct scanning compensation data.
a) b) c) d) e) f) g) h) i) j) k) l) m) n) q) Scanning Compensation Data List 8-7 Confidential
8.4.3 Placement of CIS Unit in Position for Transportation (Function code 06) Function This function is to move the CIS unit in position for transportation located at the right end. When you fix the FAX equipment and check its operation, you need to perform this function right before packing and shipping it. NOTE: Please instruct end users to perform this function if possible before packing and shipping their FAX equipment to a sales agent or a service dealer for the purpose of repair.
8.4.4 ADF Performance Test (Function code 08) Function The machine counts the documents fed by the automatic document feeder (ADF) and displays the count on the LCD for checking the ADF performance. Operating Procedure (1) Set documents. (Allowable up to the ADF capacity.) The "DOC. READY" will appear on the LCD. (2) MFC7420/7820 Press the 0 and 8 keys in this order. DCP7020/7025 Press the key or key several times to display the “MAINTENANCE 08” code on the LCD. Then press the Set key .
8.4.5 Test Pattern 1 (Function code 09) Function This function, much like the copying function, prints out test pattern 1 to allow the service personnel to check for record data missing or print quality. Operating Procedure MFC7420/7820N Press the 0 and 9 keys in this order in the initial stage of the maintenance mode. DCP7010/7020/7025 Press the key or key several times to display the “MAINTENANCE 09” code on the LCD. Then press the Set key . The figure below shows test pattern.
8.4.6 Firmware Switch Setting and Printout 8.4.6.1 Firmware switch setting (Function code 10) Function The machine incorporates the following firmware switch functions which may be activated with the procedures using the control panel keys and buttons. The firmware switches have been set at the factory in conformity to the communications standards and codes of each country. Do not disturb them unless necessary. Some firmware switches may not be applicable in some versions.
Firmware Switches (WSW01 through WSW51) Continued WSW No. Function WSW38 V.34 transmission settings WSW39 V.34 transmission speed WSW40 V.
DCP7010/7020/7025 (1) Press the key or key several times to display the “MAINTENANCE 10” code on the LCD. Then press the Set key. The machine displays the "WSW00" on the LCD and becomes ready to accept a firmware switch number. (2) Press the key or key to display the firmware switch which is desired to be changed on the LCD. Then press the Set key . The following appears on the LCD: Selector 1 ↓ Selector 8 ↓ WSWXX = 0 0 0 0 0 0 0 0 (3) Enter “1” by pressing the key. Enter “0” by pressing the key.
8.4.6.2 Printout of firmware switch data (Function code 11) Function The machine prints out the setting items and contents specified by the firmware switches. Operating Procedure (1) MFC7420/7820N Press the 1 key twice in the initial stage of the maintenance mode. DCP7010/7020/7025 Press the key or key several times to display the “MAINTENANCE 11” code on the LCD. Then press the Set key . The "PRINTING" will appear on the LCD.
Configuration List 8-15 Confidential
8.4.6.2 Printout of firmware switch data (Function code 11) Function The machine prints out the setting items and contents specified by the firmware switches. Operating Procedure (1) MFC7420/7820N Press the 1 key twice in the initial stage of the maintenance mode. DCP7010/7020/7025 Press the key or key several times to display the “MAINTENANCE 11” code on the LCD. Then press the Set key . The "PRINTING" will appear on the LCD.
8.4.8 Operational Check of Control Panel PCB (Function code 13) Function This function allows you to check the control panel PCB for normal operation. Operating Procedure (1) MFC7420/7820N Press the 1 and 3 keys in this order in the initial stage of the maintenance mode. DCP7010/7020/7025 Press the key or key several times to display the “MAINTENANCE 13” code on the LCD. Then press the Set key . The "00 " will appear on the LCD.
8.4.9 Sensor Operational Check (Function code 32) Function This function allows you to check whether the 9 sensors. Operating Procedure (1) MFC7420/7820N Press the 3 and 2 keys in this order in the initial stage of the maintenance mode. DCO7010/7020/7025 Press the key or key several times to display the “MAINTENANCE 32” code on the LCD. Then press the Set key . The machine beeps 1100 Hz and 400 Hz tones cyclically through the following volumes for testing the speaker.
(2) Change the detecting conditions to check that the indication on the LCD changes according to the sensor states. For instance, insert paper through the document front (or rear) sensor or the registration sensor (s), open the front cover or the document cover, remove the toner cartridge, jam paper at the paper outlet, insert paper from the manual feeder, and load a recording paper tray, etc. (3) Press the Stop/Exit key.
8.4.10 Received Data Transfer Function (Function code 53) (Not applicable to DCP7010/7020/7025) Function This function transfers received FAX data to another machine. It is useful when the machine cannot print received data due to the printing mechanism defective. NOTE: The number of files that can be transferred at a time is 99. To transfer 100 files or more, carry out the following procedure more than one time.
Cover page sample End page sample 8-21 Confidential
8.4.11 Fine Adjustment of Scan Start/End Positions (Function code 54) (Not applicable to DCP7010/7020/7025) Function This function is to adjust the scan start/end positions. Operating Procedure (1) Press the 5 and 4 keys in this order in the initial stage of the maintenance mode. The “SCAN START ADJ.” will appear on the LCD. (2) The “1. ADF 2. FB” will appear. Select one of them that you want to adjust the start position.
MAINTENANCE 5 and 4 select SCAN START ADJ. 2 second later 1. ADF 2.
8.4.12 Acquisition of White Level Data and CIS Scanner Area Setting (Function code 55) Function This function allows the machine to obtain white level data for the CIS scanner and save it together with the CIS scanner area into the EEPROM on the main PCB. Operating Procedure (1) MFC7420/7820N Press the 5 key twice in the initial stage of the maintenance mode. DCP7010/7020/7025 Press the key or key several times to display the “MAINTENANCE 55” code on the LCD. Then press the Set key .
8.4.14 EEPROM Customizing (Function code 74) Function This function allows you to customize the EEPROM according to language, function settings, and firmware switch settings. The customizing codes list is given in Appendix 3. NOTE: If you replace the main PCB, be sure to carry out this procedure. Operating Procedure (1) MFC7420/7820N Press the 7 and 4 keys in this order in the initial stage of the maintenance mode.
8.4.15 Display of the Equipment’s Log Information (Function code 80) Function The equipment may display its log information on the LCD. Operating Procedure (1) MFC7420/7820N Press the 8 and 0 keys in this order in the initial stage of the maintenance mode. DCP7010/7020/7025 Press the key or key several times to display the “MAINTENANCE 80” code on the LCD. Then press the Set key . The USB serial number appears on the LCD. (2) Press the Start key.
USB: USB Serial No.
8.4.16 Machine Error Code Indication (Function code 82) Function This function displays an error code of the last error on the LCD. Operating Procedure (1) MFC7420/7820N Press the 8 and 2 keys in this order in the initial stage of the maintenance mode. DCP7010/7020/7025 Press the key or key several times to display the “MAINTENANCE 82” code on the LCD. Then press the Set key. The LCD shows the "MACHINE ERROR X X." (2) Press the Stop/Exit key. Return to the initial stage of the maintenance mode. 8.
8.4.18 Cancellation of the Memory Security Mode (Not applicable to DCP7010/7020/7025 and the Japanese model) Function (Not applicable to DCP7010/7020/7025) This procedure can cancel the memory security mode. Use this procedure if the user forgets his/her password entered when setting the memory security mode so as not to exit from the memory security mode. NOTE: Carrying out this procedure will lose passwords previously entered but retain FAX messages received in the memory security mode.
CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING Confidential
CHAPTER 9 ERROR INDICATION AND TROUBLESHOOTING This chapter details error messages and codes that the incorporated self-diagnostic functions display if any error or malfunction occurs. If any error message appears, refer to this chapter to find which components should be checked or replaced. The latter half of this chapter provides sample problems that could occur in the main sections of the machine and related troubleshooting procedures.
9.1 ERROR INDICATION To help the user or the service personnel promptly locate the cause of a problem (if any), the facsimile equipment incorporates the self-diagnostic functions which display error messages for equipment errors and communications errors. For the communications errors, the equipment also prints out the transmission verification report and the communications list. 9.1.
ERROR MESSAGE Data Remaining CAUSE Print data is left in the MFC’s memory. ACTION Re-start printing from your computer. Print data is left in the MFC’s Press Job Cancel. The MFC will memory. The USB cable was cancel the job and clear it from the unplugged while the computer was memory. sending the data to the MFC. Disconnected The other person or other person’s fax machine stopped the call. Try to send or receive again. Dust on Drum The drum unit needs to be cleaned. Cleaning the drum unit.
ERROR MESSAGE CAUSE ACTION Machine too Hot The inside of the machine is too hot. Make sure that the fan in the MFC is spinning and the exhaust outlet is not blocked by something. If the fan is spinning, remove some obstacles around the exhaust outlet, and then leave the MFC turned on but do not use it for several minutes. If the fan is not spinning, you need to save the faxes before you follow the suggestions below. Then, turn off the MFC and then on again.
ERROR MESSAGE CAUSE ACTION Scanner Locked The scanner glass’s sensor does ot move to the home position. (For MFC-7420) Check whether the MFC has faxes in its memory. If there are faxes save them. Then, turn off the MFC and then on again. (For MFC-7820N) Turn off the MFC and then on again. Toner Life End The toner cartridge and drum unit assembly may have been installed improperly. Re-install the toner cartridge and drum unit assembly. The toner cartridge is used up and printing is not possible.
[ 2 ] Error codes shown in the "MACHINE ERROR X X" message Error Code (Hex) Symptom 56 The back cover is opened. 57-5A Not used. 5B New toner sensor Error (New toner sensor stays on) Close the back cover. New toner actuator lever broken Replace the new toner actuator. New toner sensor defective Replace the new toner sensor. Thermistor defective Replace the thermistor. Halogen lamp defective Replace the halogen lamp. Heater warming-up timeout error.
Error Code (Hex) 76 77 78 79 7A Symptom Probable Cause Heater overheats. Thermistor in the fixing unit defective Replace the thermistor in the fixing unit. PS PCB unit defective Replace PS PCB unit. Main PCB defective Replace the main PCB. The power supply is turned off when the error 76 or 78 --occurs. Temperature of the heater does Poor connection in the not rise. harness of the halogen lamp In casing temperature sensor harness disconnected or broken. (Not used.
80 81 82 83 84 AT the start of FAX message printing, the controller detects that paper is smaller than A4 size in length. Recording paper jam. (Not used.) Recording paper jam in paper pull-in operation. (Not used) Recording paper jam. (The registration sensor comes ON too early in the paper feeding operation.) Recording paper jam. (The registration sensor stays ON after completion of paper ejection operation.) 85 No paper tray loaded. (Not used.) 86 Not used. 87 The main motor stops abnormally.
Error Code (Hex) Symptom Probable Cause Solution 89 Not used. 8A The paper feed motor does not rotate. (Not used.) 8B The paper feed motor stops suddenly. (Not used.) 8C Not used. 8D-A0 Not used. A1 Front cover (scanner unit) opened. Hook of the front open switch on the front cover broken Replace the front cover. A2 Document length exceeding the scan limitation. During scanning, 90 cm or longer of a document is detected.
Error Code (Hex) AD-AE AF Probable Cause Solution CIS flat cable broken or not connected Main PCB defective Correct the cable connection. Replace the scanner cover (scanner unit). Correct the harness connection. Replace the scanner cover (scanner unit). Replace the main PCB. Main PCB defective Replace the main PCB. CIS defective Replace the scanner cover (scanner unit). Replace the main PCB. Symptom Not used. CIS positioning error.
Error Code (Hex) Symptom BC BD Not used. Black level data error. BE Scan starting edge detection error. (Not used.) Not used. Modem error. Not used. Out of recording paper. (Not used.) Not used. Write error in EEPROM. Not used. Data scanning error during transmission. BF-CF D0-DF E0-E3 E4 E5 E6 E7 E8 Probable Cause CIS defective E9 EA Not used. Document removed at phase B. EB-ED EE-F2 F3, F5 Not used. Not used. Internal software error. (Not used.) Not used. PC interface error. (Not used.
9.1.2 Communications Errors If a communications error occurs, the facsimile equipment (1) emits an audible alarm (intermittent beeping) for approximately 4 seconds, (2) displays the corresponding error message, and (3) prints out the transmission verification report if the equipment is in sending operation. Definition of error codes on the communications list (1) Calling Code 1 Code 2 Causes 10 08 Wrong number called. 11 01 No dial tone detected before start of dialing.
(3) (4) Compatibility [checking the NSF and DIS] Code 1 Code 2 Causes 32 01 Remote terminal only with V.29 capability in 2400 or 4800 bps transmission. 32 02 Remote terminal not ready for polling. 32 10 Remote terminal not equipped with password function or its password switch OFF. 32 11 Remote terminal not equipped with or not ready for confidential mailbox function. 32 12 Remote terminal not equipped with or not ready for relay broadcasting function.
(5) (6) (7) Command reception [checking the NSF and DIS after transmission of NSS and DCS] Code 1 Code 2 50 01 Code 1 Code 2 63 01 Password plus "lower 4 digits of telephone number" not coincident. 63 02 Password not coincident. 63 03 Polling ID not coincident. Causes DCN reception Code 2 74 (9) Vertical resolution capability changed after compensation of background color. ID checking Code 1 (8) Causes Causes DCN received.
(10) Video signal reception Code 1 Code 2 Causes A0 03 Error correction sequence not terminated even at the final transmission speed for fallback. A0 11 Receive buffer empty. (5-second time-out) A0 12 Receive buffer full during operation except receiving into memory. A0 13 Decoding error continued on 500 lines. A0 14 Decoding error continued for 10 seconds. A0 15 Time-out: 13 seconds or more for one-line transmission. A0 16 RTC not found and carrier OFF signal detected for 6 seconds.
9.2 TROUBLESHOOTING 9.2.1 Introduction This section gives the service personnel some of the troubleshooting procedures to be followed if an error or malfunction occurs with the facsimile equipment. It is impossible to anticipate all of the possible problems which may occur in future and determine the troubleshooting procedures, so this section covers some sample problems.
9.2.4 Troubleshooting Based on Problem Type [1] Paper feeding problems Even if the paper is printed and ejected without any problems such as paper jams, paper feeding problems below may appear. Users can clear these problems by following the ‘User Check’ items for each problem. Even if the same problem occurs again, follow the procedures in the table below. F-1 Double feeding User Check Check the paper used meets the recommended paper specifications. (Refer to 2.1.2 “Paper Specifications” in Chapter 2.
F-3 Page skew User Check (1) Check that the paper or other media is loaded into the paper tray correctly and that the paper guides are not too tight or too loose against the paper stack. (2) If using the manual feed slot, check how to load paper into the manual feed slot correctly. (3) The paper tray may be too full. Load paper below mark in depth. (4) Check the paper used meets the recommended paper specifications. (Refer to 2.1.2 “Paper Specifications” in Chapter 2.
[2] Software setting problems The printer may not print the data correctly if there are incorrect software settings. S-1 “There was an error writing to LPT1: (or BRUSB) for the printer” error message appears. User Check (1) Check that the printer cable is not damaged or broken. Check also that the cable is connected to the correct interface connectors of both the printer and PC. (2) Check that the correct printer is selected if you have an interface switching device.
S-2 Although the USB driver is installed, it is unable to find the BRUSB: port. (Windows98/Me only) User Check (1) Re-install the USB driver by following the steps below; i) Turn the printer off. ii) Double-click the file “Deins USB.exe” in the USB directory of the CD-ROM. iii) Re-boot the PC. iv) Turn the printer on. v) “Add New Hardware Wizard” is launched again, follow the instructions in the Wizard tore-install the driver.
S-3 This printer does not appear in Chooser (Mac OS ® 9.1 to 9.2) or Print center (Mac OS ® X 10.2.4 or greater). User Check (1) Check the printer is turned on. (2) Check the USB cable is connected correctly. (3) Check the printer driver is installed correctly. Possible cause Step Check Result Remedy Printer connection 1 Select ‘Apple System Profiler’ in Apple Menu.
[3] Malfunction When taking 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 Check Step Result Remedy Supply voltage 1 Is the correct voltage present at the outlet? No Inform the user that the correct voltage is not supplied at the outlet.
WARNING: If you analyze malfunctions with the power plug inserted into the power outlet, special caution should be exercised even if the power switch is OFF because it is a single pole switch M-3 Main motor failure Possible cause Step Check Result Failure of connector 1 Is the connection of connector CN9 on the main PCB correct? No Reconnect the connector. Main motor 2 Is the problem solved by replacing the main motor? Yes Replace the main motor.
M-5 Insufficient output from high-voltage power supply unit Possible cause Step Check Result Remedy High-voltage contact 1 Do any of the terminals on the high-voltage contacts have dirt or contact burns? Yes Clean the terminals. High-voltage power supply PCB 2 Check the connections of the connector between the high-voltage power supply and the main PCB are secured correctly? Yes Replace the high-voltage power supply PCB.
M-8 Possible cause Fixing unit failure Step Check Result Remedy Poor thermistor harness contact 1 Is the contact of connector CN19 on the main PCB good? No Reconnect the connector. Blown thermal fuse 2 Remove the fixing unit and measure the resistance between the thermostat. Is it open circuit? Yes Replace the fixing unit. Thermistor assembling failure 3 Is the thermistor installed properly? Yes Replace the fixing unit. No Reinstall the thermistor properly.
M-10 Pickup function of paper tray does not work. Possible cause Step Link lever does not move smoothly. 1 Does the link lever work? Isn't the link lever bent? Yes Remove the cause of nonsmooth operation of the link lever. Replace the link lever. Pickup roller holder ASSY does not move smoothly. 2 Does the pickup roller holder ASSY move up and down? No Replace the pickup roller holder ASSY. Main motor failure 3 Does the main motor work? No Replace the main motor.
M-12 Maximum speed is slow. Possible cause Step Check Result Two or more sheets of the paper in the tray are pulled to feed. 1 Does paper double feeding occur? Yes Replace the separation pad. Foreign body attached to the tail edge actuator 2 Is a foreign body caught on the tail edge actuator? Yes Remove a foreign body. Tail edge actuator failure 3 Is the tail edge actuator deformed? Yes Replace the tail edge actuator.
[ 4 ] Image defects 1-1 Light 1-2 Dark 1-3 Completely blank 1-4 All black 1-5 Dirt on the back of paper 1-6 Black vertical streaks 1-6 Black vertical streaks 1-7 Black horizontal stripes 1-8 Black vertical streaks 1-9 White vertical streaks o tnirp tset tuo tnirP o tnirp tset tuo tnirP tset tuo tnirp tset tuo tnirp tset tuo tnirP o tnirp tset tuo tnirP tset tuo tnirp tset tuo tnirp tset tuo tnirP o tnirp tset tuo tnirP o tnirp tset tuo tnirP tset tuo tnirp tset tuo tnirp tset tuo tnirP o tnir
I-1 Light User Check (1) Check the printer’s environment. Conditions such as humidity, high temperatures, etc. may cause this situation to occur. (2) If the whole page is light, toner save mode may be on. Disable toner save mode within Printer Properties tab of the driver. (3) Try installing a new toner cartridge or drum unit.
I-2 Dark User Check (1) Check the paper used meets the recommended paper specifications. (2) Check the printer’s environment. High temperature and high humidity conditions can increase the amount of background shading. (3) Clean the corona wire with the wire cleaner. (4) Try installing a new toner cartridge or drum unit.
I-3 Completely blank Ground contacts Step Check Result Developing bias contact failure 1 Are the developing bias contacts between the printer body and drum unit dirty? Yes Drum unit 2 Are the drum shaft and drum electrode of the printer body connected correctly? Yes Clean the shaft and the electrode. (1) No Check the connection between the shaft and the electrode. (1) Possible cause Remedy Clean the electrodes at both sides.
I-4 All black User Check (1) Clean the corona wire of the drum unit. (2) The drum unit may be damaged. Install a new drum unit. Possible cause Step Check Corona failure 1 Is the corona wire dirty? Yes Clean the corona wire with the wire cleaner. 2 Is the corona wire broken? Yes Replace the drum unit. 3 Are the charge electrodes between the printer body and the drum unit dirty? Yes Clean both electrodes.
I-5 Possible cause Dirt on the back of paper Step Check Result Remedy Fixing unit dirty 1 Is the pressure roller dirty? Is any other area in the printer dirty? Yes Clean the pressure roller referring to the following procedure. Dirt in the drum unit 2 Is the transfer roller dirty? Is the problem solved after replacing the drum unit? Yes Replace the drum unit No Replace the high-voltage power supply PCB.
I-6 Black and blurred vertical streaks User Check (1) Clean the corona wire in the drum unit. (2) Check that the wire cleaner is at the home position. (3) Check that the toner cartridge is not empty. (4) The drum unit may be damaged. Install a new drum unit. (5) The toner cartridge may be damaged. Install a new toner cartridge. Possible cause Step Check Corona failure 1 Is the vertical block streak about 10mm wide? (Check if the wire cleaner is at its home position.
I-7 Black and blurred horizontal stripes User Check (1) The drum unit may be damaged. Install a new drum unit. (2) Check the paper used meets the recommended paper specifications. (3) Clean the printer interior and the corona wire in the drum unit. Possible cause Step Scratch on the drum 1 Toner stuck on the developer roller Result Remedy Are the horizontal stripes at 74mm (exposure drum) intervals? Yes The exposure drum was scratched. Replace the drum unit.
I-9 White vertical streaks User Check (1) Try to wipe the scanner window with a soft cloth. (2) The toner cartridge may be damaged. Install a new toner cartridge. (3) Check the printer’s environment. High temperature and high humidity conditions can cause this problem. (4) Damp (wet) paper might be used. Try to change to freshly unpacked paper. Possible cause Step Check Result Remedy Transfer failure 1 Is the transfer roller scratched? Yes Replace the drum unit.
I-11 Possible cause Faulty registration Step Check Result Excessive paper load 1 Is the paper loaded in the paper tray more than 27mm high? Yes Instruct the user to keep paper loads below 27mm in depth. Print paper 2 Is the specified weight of the recommended paper being used? No Recommend to use the specified types of paper. 3 Is the first printing position within ±1mm of the tolerance specification? Yes Adjust the Y offset by using the utility software supplied.
I-12 Possible cause Poor fixing Step Check Result Print paper 1 Is thick paper of more than 43lb being used? Yes Recommend to use the specified types of paper. Toner sensor failure (When printing is faint.) 2 Is the problem solved by replacing the drum unit or the toner cartridge? Yes 1) Toner is empty. 2) The toner sensor is defective. Clean the toner sensor. 3) If the wiper in the toner cartridge is broken, replace the toner cartridge with a new one.
I-13 Image distortion Possible cause Check Step Result Remedy Laser unit installation 1 Is the laser unit secured to the frame incorrectly? (Check if there is any play.) No Secure the unit correctly and tighten the screws. Scanner LD emission failure Scanner motor rotation failure 2 Is the laser diode or the scanner motor defective? No Replace the laser unit. Scanner connection failure 3 Is the scanner harness connected properly? (Check if it is coming loose.
I-15 White spots User Check (1) If the problem is not solved after printing a few pages, the drum unit may have glue from label stock on the exposure drum surface. Refer to Step 1 in the table below and NOTE in the next page. (2) The drum unit may be damaged. Install a new drum unit.
NOTE: Clean the drum unit as follows. (1) Remove the toner cartridge from the drum unit. Place the printing samples in front of the drum unit, and find the exact position of the image defect. Drum unit Position of smudge on the drum 74mm interval Printing sample (2) Turn the drum gear by hand while looking at the surface of the exposure drum. Exposure drum (3) Wipe the surface of the exposure drum with a cotton swab until the dust or paper powder on the surface comes off.
I-16 Black spots User Check (1) If the problem is not solved after printing a few pages, the drum unit may have glue from label stock on the exposure drum surface. Refer to Step 1 in the table below and NOTE in the next page. (2) The drum unit may be damaged. Install a new drum unit. Possible cause Step Check Result Remedy Drum unit 1 Are the spots at 74mm intervals? (The problem is not solved after printing a few pages.
I-17 Black band Check Step Corona failure 1 Is the wire cleaner at its home position? No Return the wire cleaner to its home position. (2) Corona dirty 2 Is the corona wire dirty? Yes 1) Clean the corona wire. 2) If the problem still appears after cleaning, replace the drum unit.
I-18 Possible cause Print paper Gray background Step Check Result 1 Does the paper being used meet the paper specification (weight, etc.) No Yes Remedy Recommend to use the specified types of paper. Recommend to change to freshly unpacked paper. Toner sensor failure (printer side) 2 Is the error indication displayed when the toner cartridge and drum unit is taken out of the machine? (The front cover is closed.) No Toner sensor failure.
I-19 Hollow print User Check (1) Check the paper used meets the recommended paper specifications. (2) Select the ‘Thick paper mode’ in the printer driver, or use thinner paper than you are currently using. (3) Check the printer’s environment, conditions such as high humidity may cause this situation to occur. Possible cause Print paper I-20 Step Check Result Remedy 1 Is thick paper of more than 43lb being used or extremely rough surface paper? Yes Recommend to use the specified types of paper.
I-21 Possible cause Horizontal lines Step Check Result Paper tray contacts 1 Are the ground contacts on the right side of the paper tray connecting correctly? No Clean the contacts. Drum unit 2 Are the high-voltage power supply and drum unit contacted correctly? No Clean the contacts. I-22 Possible cause Remedy Light rain Step Check Result Drum unit failure 1 Is the problem solved after replacing the drum unit? Yes Replace the drum unit.
I-23 Ghost User Check (1) Check the paper used meets the recommended paper specifications. Damp paper, thick media or rough surfaced paper can cause the problem. (2) Check the printer’s environment. High temperature and high humidity conditions can cause the problem. (3) Check that the appropriate media type is selected in the printer driver. (4) Try installing a new drum unit.
Location of Grounding Contacts • Drum unit (2) Wire cleaner Toner cartridge Drum Unit (4) Developer roller (3) Charge (7) Cleaner (1) Exposure drum (5) Grid • (6) Transfer roller Printer body & paper tray (4) Developer roller (3) Charge (5) Grid (7) Cleaner (6) Transfer roller (1) Exposure drum 9 -4 7 Confidential
[5] Incorrect printout When the data is not printed correctly as it is seen on the PC screen, follow the procedures below in the event of a specific error. P-1 The printer prints unexpectedly or it prints garbage. User Check (1) Check if the printer cable is not too long. It is recommended to use a parallel cable of less than 2 meters (6.6 feet) in length. (2) Check that the printer cable is not damaged or broken.
P-3 Unable to print full pages of a document with the “MEMORY FULL” message. User Check (1) Press the Start key on the control panel to print the data remaining in the printer. (2) Reduce the complexity of your document or reduce the printer resolution. NOTE: This problem may appear if the data is too complex. Possible cause Main PCB failure P-4 Step 1 Check Result Is it possible to print after reducing the data of a document? Yes Remedy Replace the main PCB.
[6] Network problem If the error related to network occurs, refer to the following sections; Installation problem The Brother print server is not found during setup of the network print software installation or from the printer driver of the Brother printer in Windows®. The Brother print server is not found using the Simple Network Configuration capabilities of Mac OS® X.
(5) Make the following selection. Make sure that your print server appears. If it is visible, then the connection is good. Otherwise, go to Step 5. 5. If you have tried 1 to 4 above and it does not work, then reset the print server back to the default factory settings and try from the initial setup again. For information how to reset to the default factory settings. 6. Check if a personal firewall such as ICF (Internet Connecting Firewall) for Windows XP is running on your computer.
For Macintosh® For Mac OS® 9.1 to 9.2 (1) From the Apple menu, open the Chooser. (2) Click the Brother Laser (IP) icon, and make sure that your print server name appears in the right frame. If it is visible, then the connection is good. Otherwise, go to Step (4). For Mac OS® X 10.2.4 or greater (1) (2) (3) (4) (5) From the Go menu, select Applications. Open the Utilities folder. Double-click the Printer Setup Utility icon. Click Add. Make the following selection. Make sure that your print server appears.
If you are having trouble printing on a Windows® 95/98/Me, Windows NT® 4.0 or later Peer-to-Peer network (NetBIOS), check the following: 1. Make sure that the Brother NetBIOS Port driver is correctly installed and configured according to the Windows® 95/98/Me or Windows NT® 4.0 Peer-to-Peer (NetBIOS) chapters.
[7] Troubleshooting of the control panel L-1 Nothing is displayed on the LCD. User Check (1) Verify if the power switch is turned off. Possible cause Step Check Result Connection between main PCB and control panel PCB 1 Main PCB and control panel PCB are properly connected No Fix the connector properly. Harness between main PCB and control panel PCB 2 Harness is damaged. Yes Replace the harness with a normal part.
L-2 The control panel does not work. User Check (1) No Possible cause Step Check Result Remedy Key sticking 1 Any key on control panel is stuck. Yes Clean up the panel cover, or remove the burrs from panel cover and panel keys. Connection between main PCB and control panel PCB 2 Main PCB and control panel PCB are properly connected. No Fix the connection properly. Harness between main PCB and control panel PCB 3 Harness is damaged. Yes Replace the harness with a normal part.
[8] Troubleshooting of fax functions F-1 FAX can't send it. User Check (1) Verify that the telephone cord is securely inserted. Possible cause Step Check Result Remedy Dialing mode setting 1 Dialing signal (PB or DP) comes out normally in each mode. (Use telephone line emulator.) Yes Check the dialing mode setting at customer's again. Check the telephone line cord between machine and socket. Connection between main PCB and NCU PCB 2 Main PCB and NCU PCB are properly connected.
F-2 Speed dialing and One-touch dialing can't be used. Possible cause Step Check Speed dialing, One-touch dialing 1 A fax transmission can be made using the key, ten? Yes Replace the main PCB. Dialing mode setting 2 Dialing signal (PB or DP) comes out normally in each mode. Yes Check the dialing mode setting at customer's again. Check the telephone line cord between machine and socket. Result (Use telephone line emulator.
F-3 FAX can't be received. User Check (1) Verify that the telephone cord is securely inserted. Step Check Result Receive mode setting 1 Receive mode is set to automatic receive mode. No Set the receive mode to automatic receive mode. NCU PCB 2 Replacement of NCU PCB solves the problem. Yes Replace the NCU PCB with a normal part. Main PCB 3 Replacement of main PCB solves the problem. Yes Replace the main PCB with a normal part. Possible cause F-4 Remedy No bell ring.
F-5 Speaker is silent during on-hook dialing. Possible cause Step Check Result Connection between main PCB and speaker 1 Main PCB and speaker are properly connected. No Fix the connection properly. Speaker 2 Replacement of speaker solves the problem. Yes Replace the speaker with a normal part. Connection between main PCB and NCU PCB 3 Main PCB and NCU PCB are properly connected. No Fix the connection properly. Harness between main PCB and NCU PCB 4 Harness is damaged.
MFC7420/7820N DCP7010/7020/7025 APPENDIX 1. SERIAL NUMBERING SYSTEM This appendix shows the location of serial number labels put on some parts and lists the coding information pertaining to the serial numbers.
SERIAL NUMBERING SYSTEM Individual machines have a serial number label for the machine itself and a property label for the head/carriage unit. This section lists the coding information for those serial numbers and property codes.
(2) Laser unit serial label LSU MODEL DISTINCTION Y delay X delay ERAME MANUFACTURER AND MOLD DISTINCTION T1 THE 1st. MOLD Y3 THE 3rd. MOLD SERIAL NUMBER INSPECTION MACHINE POLYGON MOTOR DISTINCTION REGARDING X delay and Y delay It indicates required delay amount for writing in each of main (X) and sub (Y) scanning direction Location Laser unit serial label App.
MFC7420/7820N DCP7010/7020/7025 APPENDIX 2. FIRMWARE INSTALLATION This appendix provides instructions on how to update firmware stored in the flash ROM on the main PCB or load firmware to a new main PCB from the host PC. No hardware replacement is required for updating. A2.1 INSTALLING THE UPDATE DATA TO THE MACHINE ........................................ App. 2-1 A2.2 SETTING ID CODES TO MACHINES .................................................................... App.
A2.1 INSTALLING THE UPDATE DATA TO THE MACHINE If you want to update the current program stored in the flash ROM of the main PCB to the newer version or after you replace the main PCB, install the update program onto the flash ROM. The program installation requires a PC/AT-compatible computer (which is capable of running MS-DOS or its compatible OS). If you use parallel interface Connecting the Machine to Your PC (1) Make sure that your PC is turned off.
Installing the Update Data onto the Flash ROM of the Machine On a PC running Windows 95 (1) Copy the update data and transfer utility onto the desired same directory of the hard disk. e.g., C:\UPDATE (2) Click the Start button, point to Programs, and then click MS-DOS Prompt to open an MSDOS window. (3) Type the drive letter where the update data and transfer utility are located. In the above example, type C:\ from the command line and press the Enter key. Then type CD UPDATE and press the Enter key.
If you use USB cable Preparation You need to have the BHL2-Maintenance Printer driver and FILEDG32.exe (provided by Brother Industries) on hand. Save them in an arbitrary folder in your PC. Installing the BHL2-Maintenance Printer driver To identify terminals connected via USB interface, a PC requires the corresponding virtual USB devices to be implemented by driver/software.
(6) The following screen appears, indicating the detection of new hardware device by the system. Click Next to proceed. (7) Select "Search for a suitable driver for my device (recommended)" and click Next. (8) Select "Specify a location" and click Next. Ap p .
(9) Select the folder where the copy of the BHL2-Maintenance Printer driver is located (or click Browse to specify it), then click OK. (This sample screen is captured on the Windows 2000 desktop.) (10) Click Next. (11) To proceed, click Yes. Ap p .
(12) If the driver is successfully installed, the following message window appears. Click Finish to return to Windows. NOTE: After completion of the driver installation, if the machine exits the maintenance mode, the "Found New Hardware Wizard" screen in step (6) appears again. Click Cancel. NOTE: To check that the printer driver is successfully installed, click Start|Settings|Printers to call up the Printers window as shown below and confirm that the Brother BHL2-Maintenance Printer icon is displayed.
Writing the update programs/data onto the flash ROM of the machine After the installation procedure of the printer driver, proceed to the firmware writing operation. If the printer driver has been installed so that you start from writing firmware, unplug the power cord from the electrical outlet. MFC7820N/7420 While holding down the 5 key, plug the power cord into an electrical outlet. DCP7010/7020/7025 While holding down the Number of Copies key, plug the power cord into an electrical outlet.
(3) MFC7420/7820N Press the * and # keys at the same time when the machine is on standby. The firmware version appears on the LCD. DCP7010/7020/7025 Press the Menu and Start keys. Next press the key four times to make the machine enter the maintenance mode. Press the key several times to display 8 on the LCD and then press the Set key. Again press the key several times to display 0 and press the Set key. Press the Start key several times to display the firmware version.
A2.2 SETTING ID CODES TO MACHINES Brother driver machines are assigned unique ID codes (character strings) at the factory. If you replace the main PCB of the machine, the machine will lose its assigned ID code so that it will not be identified by the connected PC*. You need to assign a unique ID code (character string) to the machine according to the procedure given here. For models covered by this manual, set serial numbers given to individual machines as ID codes.
MFC7420/7820N DCP7010/7020/7025 APPENDIX 3. CUSTOMIZING CODES ACCORDING TO SHIPPING DESTINATION This appendix lists the customizing codes for the various preferences exclusively designed for each destination (e.g. language). Those codes are stored in the memory (EEPROM) mounted on the main PCB. If the main PCB is replaced with a new one, therefore, you will need to set the proper customizing codes with the machine in the maintenance mode.
EEPROM CUSTOMIZING CODES This function allows you to customize the EEPROM according to language, function settings, and firmware switch settings. Operating Procedure (1) Press the Menu/Set (Menu) and Start keys. Next press the machine enter the maintenance mode. key four times to make the TIP: FAX models equipped with numerical keypads can enter the maintenance mode in the same way as conventional models; that is, by pressing the Menu/Set, *, 2, 8, 6 and 4 keys in this sequence.
MFC7420/7820N DCP7010/7020/7025 APPENDIX 4. FIRMWARE SWITCHES (WSW) This appendix describes the functions of the firmware switches, which can be divided into two groups: one is for customizing preferences designed for the shipping destination (as described in Appendix 3) and the other is for modifying preferences that match the machine to the environmental conditions. Use the latter group if the machine malfunctions due to mismatching.
WSW No. Function Refer to: WSW01 Dial pulse setting App. 4-3 WSW02 Tone signal setting App. 4-4 WSW03 PABX mode setting App. 4-5 WSW04 TRANSFER facility setting App. 4-6 WSW05 1st dial tone and busy tone detection App. 4-7 WSW06 Redial/Pause key setting and 2nd dial tone detection App. 4-9 WSW07 Dial tone setting 1 App. 4-11 WSW08 Dial tone setting 2 App. 4-12 WSW09 Protocol definition 1 App. 4-13 WSW10 Protocol definition 2 App. 4-14 WSW11 Busy tone setting App.
WSW No. Function Refer to: WSW38 V.34 transmission settings App. 4-42 WSW39 V.34 transmission speed App. 4-43 WSW40 V.34 modem settings App. 4-44 WSW41 ON-duration of the scanning light source App. 4-46 WSW42 Internet mail settings App. 4-47 WSW43 Function setting 21 App. 4-47 WSW44 Speeding up scanning-1 App. 4-48 WSW45 Speeding up scanning-2 App. 4-49 WSW46 Monitor of power ON/OFF state and parallel port kept at high App.
WSW01 (Dial pulse setting) Selector No. Function Setting and Specifications Dial pulse generation mode No. 1 0 0 1 1 2 0 1 0 1 : : : : N N+1 10-N N Break time length in pulse dialing No. 3 0 0 1 1 4 0 1 0 1 : : : : 60 ms 67 ms 40 ms (for 16 PPS) 64 ms (at 106-ms intervals) Inter-digit pause No.
Selector 7: Switching between pulse (DP) and tone (PB) dialing, by the function switch This selector determines whether or not the dialing mode can be switched between the pulse (DP) and tone (PB) dialing by using the function switch. Selector 8: Default dialing mode, pulse (DP) or tone (PB) dialing This selector sets the default dialing mode (pulse dialing or tone dialing) which can be changed by the function switch.
WSW03 (PABX* mode setting) Selector No. Function 1 CNG detection when sharing a modular wall socket with a telephone 2 | 4 5 Detection time length of PABX* dial tone, required for starting dialing (Not used.) Setting and Specifications 0: A No. 2 0 0 0 0 1 1 1 1 CNG detection when sharing a modular wall socket with a telephone 3 0 0 1 1 0 0 1 1 0: A No. 6 7 0 0 6 7 Dial tone detection in PABX* (Not used.
Selectors 6 and 7: Dial tone detection in PABX (Not used.) These selectors activate or deactivate the dial tone detection function which detects a dial tone when a line is connected to the PABX. Setting both of these selectors to "1" activates the dial tone detection function so that the machine starts dialing upon detection of a dial tone when a line is connected. Other setting combinations deactivate the dial tone detection function so that the machine starts dialing after the specified WAIT (3.5, 5.
Selector 4: Dual tone detection sensitivity in ICM recording Setting this selector to "1" increases the tone detection sensitivity in ICM recording. Selectors 5 and 6: Earth time length for earth function (Not used.) These selectors set the short-circuiting time length of the telephone line (La or Lb) to ground. This setting is effective only when the earth function is selected for the R key by using the function switch.
Selectors 1 through 3: 1st dial tone detection These selectors activate or deactivate the 1st dial tone detection function which detects the 1st dial tone issued from the PSTN when a line is connected to the PSTN. Setting all of these selectors to "1" activates the dial tone detection function so that the machine starts dialing upon detection of a dial tone when a line is connected. (However, in those countries which support no dial tone detection function, e.g., in the U.S.A.
WSW06 (Redial/Pause key setting and 2nd dial tone detection) Selector No. Function Setting and Specifications 1 | Redial/Pause key setting and 2nd dial tone detection No. 1 0 0 0 0 1 1 2 0 0 1 1 0 1 3 0 1 0 1 0 0 : : : : : : 3 1 0 1 : 1 1 1 : 4 | Detection of international tone 6 No. 4 0 0 0 0 1 1 1 1 5 0 0 1 1 0 0 1 1 6 0 1 0 1 0 1 0 1 : : : : : : : : No pause 3.5 sec. WAIT 7 sec. WAIT 10.5 sec. WAIT 14 sec.
Selectors 1 through 3: Redial/Pause key setting and 2nd dial tone detection Selectors 1 2 3 0 0 0 No WAIT is inserted even if the Redial/Pause key is pressed. 0 0 0 1 0 1 1 0 1 0 1 0 If you press the Redial/Pause key during dialing, the machine will insert WAIT as defined in the above table. If the Redial/Pause key is pressed repeatedly, the machine inserts the specified WAIT multiplied by the number of depressions. It applies also in hook-up dialing.
WSW07 (Dial tone setting 1) Selector No. 1 2 3 Setting and Specifications Function No. 1 0 0 1 Dial tone frequency band control Line current detection (Not used.) No. 0 0 0 0 1 1 1 1 2nd dial tone detection level (Z = 600 Ω) 6 7 Allowable instantaneous interrupt during reception of 1st dial tone 8 Not used.
WSW08 (Dial tone setting 2) Selector No. 1 | 3 4 5 6 | 8 Setting and Specifications Function 1st dial tone detection time length No. 1 0 0 0 0 1 1 1 1 2 0 0 1 1 0 0 1 1 3 0 1 0 1 0 1 0 1 Time-out length for 1st and 2nd dial tone detection No. 4 0 0 1 1 5 0 1 0 1 : 10 sec. : 20 sec. : 15 sec. : 30 sec. Detection level of 1st dial tone and busy tone before dialing No. 0 0 0 0 1 1 1 1 7 0 1 0 1 0 1 0 1 8 : : : : : : : : 6 0 0 1 1 0 0 1 1 : : : : : : : : 50 ms 210 ms 500 ms 800 ms 900 ms 1.
WSW09 (Protocol definition 1) Selector No. Setting and Specifications Function 1 Frame length selection 0: 256 octets 1: 64 octets 2 Use of non-standard commands 0: Allowed 1: Prohibited No. 3 0 0 1 1 3 No. of retries 4 4 0 1 0 1 : : : : 4 times 3 times 2 times 1 time 5 T5 timer 0: 300 sec. 1: 60 sec. 6 T1 timer 0: 35 sec. 1: 40 sec. 7 8 No. 7 0 8 0 : 0 1 1 1 0 1 : : : Timeout for response from the called station in automatic sending mode 55 sec. (in U.S.A.
WSW10 (Protocol definition 2) Selector No. Function Setting and Specifications 1 Not used. 2 Time length from transmission of the last dial digit to CML ON 0: 100 ms 1: 50 ms 3 Time length from CML ON to CNG transmission 0: 2 sec. 1: 4 sec. 4 Time length from CML ON to CED transmission (except for facsimile-to-telephone switching) 0: 0.5 sec. 1: 2 sec. 5 6 7 8 Selector 2: No. 5 0 0 1 1 No.
WSW11 (Busy tone setting) Selector No. 1 2 Busy tone frequency band control 3 6 No.
WSW12 (Signal detection condition setting) Selector No. 1 2 3 4 5 6 Function Setting and Specifications Min. detection period required for interpreting incoming calling signal (CI) as OFF No. 1 0 0 1 1 2 0 1 0 1 : : : : 1500 ms 500 ms 700 ms 900 ms Max. detection period for incoming calling signal (CI) being OFF No. 3 0 0 1 1 4 0 1 0 1 : : : : 6 sec. 7 sec. 9 sec. 11 sec. Min. detection period required for acknowledging incoming calling signal (CI) as ON No.
WSW13 (Modem setting) Selector No. 1 2 3 4 Setting and Specifications Function Cable equalizer No. 1 0 0 1 1 2 0 1 0 1 : : : : 0 km 1.8 km 3.6 km 5.6 km Reception level No. 3 0 0 1 1 4 0 1 0 1 : : : : -43 dBm -47 dBm -49 dBm -51 dBm 0: 0: 0: 0: 5 | Modem attenuator 8 0 dB 0 dB 0 dB 0 dB 1: 1: 1: 1: 8 dB 4 dB 2 dB 1 dB The modem should be adjusted according to the user's line conditions.
WSW14 (AUTO ANS facility setting) Selector No. 1 2 3 4 Function Setting and Specifications Frequency band selection (lower limit) for incoming calling signal (CI) No. 1 0 0 1 1 2 0 1 0 1 : : : : Frequency band selection (upper limit) for incoming calling signal (CI) No. 3 0 0 1 1 4 0 1 0 1 : 30 Hz : 55 Hz : 70 Hz : 200 Hz No. 6 0 0 0 0 1 1 1 1 0 0 0 0 1 1 1 1 7 0 0 1 1 0 0 1 1 0 0 1 1 0 0 1 1 5 | No.
WSW15 (REDIAL facility setting) Selector No. Function Setting and Specifications 1 Redial interval 2 3 | No. of redialings 6 No. 1 0 0 1 1 2 0 1 0 1 : : : : 5 minutes 1 minute 2 minutes 3 minutes No. 3 0 0 0 0 4 0 0 0 0 5 0 0 1 1 6 0 1 0 1 : : : : 1 1 : | 1 7 Not used. 8 CRP option Selectors 1 through 6: 1 0: Disable 16 times 1 times 2 times 3 times | 15 times 1: Enable Redial interval and No.
WSW16 (Function setting 1) Selector No. Setting and Specifications Function 1 Not used. 2 ITU-T (CCITT) superfine recommendation 3 | 6 Not used. 7 8 0: OFF 1: ON Max. document length limitation 0: 400 cm 1: 90 cm Stop/Exit key pressed during reception 0: Not functional 1: Functional NOTE: Selector 7 is applicable to models equipped with ADF units.
WSW17 (Function setting 2) Selector No. 1 2 Function Setting and Specifications No. 1 0 0 1 Off-hook alarm 3 4 Not used. 5 Calendar clock type 6 Not used. 7 Non-ring reception 8 Not used. 2 0 1 X : : : No alarm Always valid Valid except when 'call reservation' is selected. 0: U.S.A.
WSW18 (Function setting 3) Selector No. 1 2 3 4 5 6 Function Setting and Specifications Not used. Detection enabled time for CNG and no tone No. 2 0 0 1 1 3 0 1 0 1 : : : : 40 sec. 0 sec. (No detection) 5 sec. 80 sec. Not used. Registration of station ID 0: No.
WSW19 (Transmission speed setting) Selector No. 1 | 3 Function Setting and Specifications First transmission speed choice for fallback No. 1 No. 4 0 0 0 0 1 1 1 1 2 5 0 0 1 1 0 0 1 1 3 6 0 1 0 1 0 1 0 1 : : : : : : : : 2,400 bps 4,800 bps 7,200 bps 9,600 bps 12,000 bps 4 | 6 Last transmission speed choice for fallback 7 V.34 mode 0: Permitted 1: Prohibited 8 V.17 mode 0: Permitted 1: Prohibited 14,400 bps NOTE: Selector 7 takes effect only in models supporting V.34 mode.
WSW20 (Overseas communications mode setting) Selector No. Function Setting and Specifications 1 EP* tone prefix 0: OFF 1: ON 2 Overseas communications mode (Reception) 0: 2100 Hz 1: 1100 Hz 3 Overseas communications mode (Transmission) 0: OFF 1: Ignores DIS once. 4 5 Min. time length from reception of CFR to start of transmission of video signals 6 7 At CNG detection, elimination of chattering noise (Not used) 8 Limitation on CNG detection No. 4 0 0 1 1 No.
Selectors 8: Limitation on CNG detection If this selector is set to "1," the machine detects a CNG signal according to the condition preset by selectors 2 and 3 on WSW18 after a line is connected. If it is set to "0," the machine detects a CNG signal as long as the line is connected. WSW21 (TAD setting 1) Selector No. 1 | 5 Setting and Specifications Function Max. waiting time for voice signal No.
WSW22 (ECM and call waiting caller ID) Selector No. Function Setting and Specifications 1 ECM* in sending 0: ON 1: OFF 2 ECM* in receiving 0: ON 1: OFF 3 Call Waiting Caller ID 0: ON 1: OFF 4 Not used. 5 | 8 Acceptable TCF bit error rate (%) (Only at 4800 bps) (Not used.) 0: 0: 0: 0: 1: 1: 1: 1: 0% 0% 0% 0% 8% 4% 2% 1% * ECM: Error correction mode NOTE: Selector 3 is applicable to the American models only.
WSW23 (Communications setting) Selector No. 1 Setting and Specifications Function 0: From the head of a series of zeros 1: From any arbitrary point Starting point of training check (TCF) Allowable training error rate No. 2 0 0 1 1 3 0 1 0 1 : : : : 0% 0.5% 1% 2% 5 Decoding error rate for transmission of RTN No. 4 0 0 1 1 5 0 1 0 1 : : : : 16% 14% 10% 8% 6 7 Not used. 8 Limitation of attenuation level 2 3 4 0: Yes 1: No NOTE: Selector 8 is not applicable to the French models.
WSW24 (TAD setting 2) Selector No. Setting and Specifications Function No. 1 0 0 1 1 2 0 1 0 1 : : : : 15 sec. 20 sec. 30 sec. 50 sec. : : : : 4 sec. 3 sec. 2 sec. 1 sec. 1 2 Maximum OGM recording time 3 Time length from CML ON to start of pseudo ring backtone transmission 3 0 0 1 1 4 0 1 0 1 Attenuator for playback of ICM/OGM to the line (Selectable from the range of 0-15 dB) 0: 0: 0: 0: 0 dB 0 dB 0 dB 0 dB No.
WSW25 (TAD setting 3) Selector No. 1 | 4 Setting and Specifications Function Not used. 5 | Pause between paging number and PIN 7 8 No. 5 0 0 0 0 1 1 1 1 6 0 0 1 1 0 0 1 1 7 0 1 0 1 0 1 0 1 : : : : : : : : 2 sec. 4 sec. 6 sec. 8 sec. 10 sec. 12 sec. 14 sec. 16 sec. Not used. NOTE: Selectors 5 through 7 are applicable to the U.S.A. models only.
WSW26 (Function setting 4) Selector No. Setting and Specifications Function 1 2 Not used. 3 Dialing during document reading into the temporary memory in in-memory message transmission 4 5 No. of CNG cycles to be detected (when the line is connected via the external telephone except in the external TAD mode or via the built-in telephone) No. 4 0 0 1 1 5 0 1 0 1 : : : : 0.5 1 1.5 2 (A) (B) (C) (D) 6 7 No.
WSW27 (Function setting 5) Selector No. Function Setting and Specifications 1 Not used. 2 Ringer OFF setting 0: Yes 1: No 3 Automatic playback of OGM when switched to the TAD mode 0: No 1: Yes 4 5 Detection of distinctive ringing pattern (Not used.) 0: Yes 1: No 6 Recording quality 0: Normal 1: High 7 Recording time for high recording quality 0: Short (9.6 kbps) 1: Long (8.8 kbps) 8 Not used. NOTE: Selectors 4 and 5 are applicable to the U.S.A. models only.
WSW28 (Function setting 6) Selector No. Setting and Specifications Function Transmission level of DTMF high-band frequency signal No. 1 0 0 0 0 1 1 1 1 2 0 0 1 1 0 0 1 1 3 0 1 0 1 0 1 0 1 : : : : : : : : 0 dB +1 dB +2 dB +3 dB 0 dB -1 dB -2 dB -3 dB Transmission level of DTMF low-band frequency signal No. 4 0 0 0 0 1 1 1 1 5 0 0 1 1 0 0 1 1 6 0 1 0 1 0 1 0 1 : : : : : : : : 0 dB +1 dB +2 dB +3 dB 0 dB -1 dB -2 dB -3 dB 1 | 3 4 | 6 7 8 Not used.
WSW29 (Function setting 7) Selector No. Setting and Specifications Function Compression threshold level for voice signals inputted via the telephone line in the builtin TAD operation No. 1 0 0 0 0 1 1 1 1 2 0 0 1 1 0 0 1 1 3 0 1 0 1 0 1 0 1 : : : : : : : : -47.0 dBm -48.5 dBm -50.0 dBm -51.5 dBm -53.0 dBm -54.5 dBm -56.0 dBm OFF (A) (B) (C) (D) (E) (F) (G) (H) 4 | 6 Compression threshold level for voice signals inputted via the handset in the built-in TAD operation No.
WSW30 (Function setting 8) Selector No. Setting and Specifications Function 1 | 3 Dial tone/busy tone detection level during recording of ICM (Not used.) 4 | 7 Not used. 8 Text copy density adjustment No. 1 0 0 0 0 1 1 1 1 2 0 0 1 1 0 0 1 1 3 0 1 0 1 0 1 0 1 : : : : : : : : 0: Normal -38.0 dBm -39.5 dBm -41.0 dBm -42.5 dBm -44.0 dBm -45.5 dBm -47.0 dBm -48.5 dBm (A) (B) (C) (D) (E) (F) (G) (H) 1: Dark NOTE: Selectors 1 through 3 are applicable to models equipped with internal TADs.
WSW31 (Function setting 9) Selector No. Setting and Specifications Function 1 Not used. 2 Default reduction rate for failure of automatic reduction during recording 3 Not used. 4 (Do not disturb this selector.) 5 Minimum ON and OFF duration of ringer signals effective in distinctive ringing 6 | 8 Not used. 0: 100% 1: 70% 0: 130 ms 1: 90 ms NOTE: Selector 5 is applicable only to the U.S.A. models.
WSW32 (Function setting 10) Selector No. 1 | 4 5 6 7 8 Setting and Specifications Function Not used. Default resolution No. 5 0 0 1 1 6 0 1 0 1 : : : : Standard Fine Super fine Photo Default contrast No. 7 0 1 1 8 X : 0 : 1 : Automatic Super light Super dark Selectors 5 and 6: Default resolution These selectors set the default resolution which applies when the machine is turned on or completes a transaction.
WSW33 (Function setting 11) Selector No. Setting and Specifications Function 1 | 3 Detection threshold level of "no tone" during recording of ICM No. 1 0 0 0 0 1 1 1 1 4 5 FAX receiving speed to be kept within the transmission speed limit to the PC No. 4 0 0 1 1 6 Report output of polled transmission requests 7 8 Comfortable noise level (Not used.) 2 0 0 1 1 0 0 1 1 3 0 1 0 1 0 1 0 1 : : : : : : : : 5 0 1 0 1 : : : : 14,400 bps 12,000 bps 9,600 bps 7,200 bps 0: Yes No.
WSW34 (Function setting 12) Selector No. Setting and Specifications Function 1 | 3 Erasing time length of ICM tone recorded preceding the tone detection starting point in the case of automatic line disconnection due to no voice signal received No. 1 0 0 0 0 1 1 1 1 2 0 0 1 1 0 0 1 1 3 0 1 0 1 0 1 0 1 4 5 No. of CNG cycles to be detected (when the line is connected via the external telephone in the external TAD mode or via the machine in F/T mode) No. 4 0 0 1 1 5 0 1 0 1 : : : : No.
WSW35 (Function setting 13) Selector No. 1 | 4 5 | 8 Function Setting and Specifications Max. detection period of dial tone/busy tone during recording of ICM No. 1 0 0 0 0 2 0 0 0 1 1 1 3 0 0 1 0 | 1 4 0 1 0 0 : : : : 1 : No detection 1 sec. 2 sec. 4 sec. | 15 sec. Not used. NOTE: Selectors 1 through 4 are applicable to models equipped with internal TADs. Selectors 1 through 4: Max.
WSW36 (Function setting 14) Selector No. Setting and Specifications Function 1 ECP mode* (Not used.) 0: ON 1: OFF 2 Recovery from Inactive PC Interface (Not used.) 0: Disable 1: Enable 3 PC Power-off Recognition Time (Not used.) 0: Normal 1: Long 4 Not used. 5 Escape from phase C 0: Yes 1: No 6 | 8 Extension of incoming calling signal (CI) frequency band specified by selectors 1 through 4 on WSW14 No.
Selectors 6 through 8: Extension of incoming calling signal (CI) frequency band specified by selectors 1 through 4 on WSW14 At the start of reception, if the machine detects the frequency of a CI signal specified by selectors 1 through 4 on WSW14, it starts the ringer sounding. However, the machine may fail to detect the CI signal normally due to noise superimposed at the time of reception. To prevent it, use selectors 6 through 8 on WSW36.
WSW38 (V.34 transmission settings) Selector No. Function Setting and Specifications No. 1 0 1 1 2 X : Automatic 0 : Fixed to 4 points 1 : Fixed to 16 points 1 2 Setting of the equalizer 3 Sending level of guard tone at phase 2 0: Normal - 7 db 1: Normal 4 Stepping down the transmission speed at fallback each 0: 2400 bps 1: 4800 bps 5 6 No.
WSW39 (V.34 transmission speed) Selector No. Function Setting and Specifications 1 | 4 First transmission speed choice for fallback 5 | 8 Last transmission speed choice for fallback No. 1 No.
WSW40 (V.34 modem settings) Selector No. 1 2 3 | 8 Function Setting and Specifications Not used. No. 3 No. 4 No. 5 No. 6 No. 7 No. 8 Masking of symbol rate(s) Not masking Masking 0 0 0 0 0 1 1 1 1 1 3429 symbols/sec 3200 symbols/sec 3000 symbols/sec 2800 symbols/sec Not used. 2400 symbols/sec NOTE: WSW40 takes effect only when the V.34 mode is permitted (WSW19, selector 7) in models supporting V.34 mode.
Symbol rate 2400 2800 Transmission speed (bps) 2400 4800 7200 9600 12000 14400 16800 19200 21600 4800 7200 9600 12000 14400 16800 19200 21600 24000 26400 Symbol rate 3000 3200 Transmission speed (bps) 4800 7200 9600 12000 14400 16800 19200 21600 24000 26400 28800 4800 7200 9600 12000 14400 16800 19200 21600 24000 26400 28800 31200 App.
WSW41 (ON-duration of the scanning light source) Selector No. 1 | 3 ON-duration of the scanning light source at room temperature (Not used.) 4 Not used. 5 | 8 Setting and Specifications Function Modem attenuator No. 1 0 0 0 0 1 1 1 1 2 0 0 1 1 0 0 1 1 No.
WSW42 (Internet mail settings) Selector No. Setting and Specifications Function 1 Access to the incoming mail (POP3) server (Periodical or on-demand) 0: Disable 1: Enable 2 Access to the outgoing mail (SMTP) server 0: Disable 1: Enable 3 I-FAX relay 0: Disable 1: Enable 4 | 8 Not used. NOTE: WSW42 is applicable to models equipped with LAN interface. WSW43 (Function setting 21) Selector No. 1 Setting and Specifications Function Not used.
WSW44 (Speeding up scanning-1) Selector No. 1 | 5 Setting and Specifications Function Not used. No. 6 7 8 0 0 0 : 6 | 8 Effective time length of the white level compensation data obtained beforehand (Not used.) 0 0 0 1 1 1 1 0 1 1 0 0 1 1 1 0 1 0 1 0 1 : : : : : : : Obtained compensation data ineffective 1 min. 3 min. 5 min. 10 min. 15 min. 20 min. 30 min. NOTE: Selectors 6 through 8 are applicable only to models equipped with ADF units.
WSW45 (Speeding up scanning-2) Selector No. 1 | 3 Setting and Specifications Function No. 1 0 0 0 0 1 1 1 1 Delay time from when documents are set until the ADF starts drawing them in (Not used.) 4 | 6 Periodical correction intervals of the reference voltage to be applied to white level compensation for document scanning, during standby (Not used.) 7 Standby position of the CIS unit (Not used.) 8 Not used. 2 0 0 1 1 0 0 1 1 3 0 1 0 1 0 1 0 1 : : : : : : : : No.
WSW46 (Monitor of power ON/OFF state and parallel port kept at high) Selector No. Function Setting and Specifications No. 1 0 0 1 1 2 0 1 0 1 : Disable : Monitor SELECT IN : Monitor STROBE : Monitor both SELECT IN and STROBE 1 2 Monitoring the PC ON/OFF state (Not used.) 3 Parallel port output pins kept at high level (Not used.) 0: Enable 1: Disable 4 Previous filtering parameters for white level compensation (Not used.) 0: Enable 1: Disable 5 | 8 Not used.
WSW47 (Switching between high- and full-speed USB) Selector No. Function 1 Handling paper at the occurrence of a paper feed timing error 2 Not used. 3 4 Setting and Specifications 0: Eject paper w/o print Delay of FAX line disconnection when switching to the pseudo-ringing external telephone 5 Disable the ringer of external telephone at non-ring reception 6 Not used.
WSW48 (USB setup latency) Selector No. 1 | 5 6 | 8 z Function Setting and Specifications Not used. USB setup latency No. 6 0 0 0 0 1 1 1 1 7 0 0 1 1 0 0 0 1 8 0 1 0 1 0 1 0 1 : : : : : : : : Default period Shorter 1 Longer 1 Longer 2 Longer 3 Longer 4 Shorter 2 Shorter 3 Selectors 6 through 8: USB setup latency These selectors should not be disturbed. WSW49 (End-of-copying beep and print in black) Selector No. z Function Setting and Specifications 1 2 Not used.
WSW50 (SDAA settings) Selector No. Function Setting and Specifications 1 2 Percentage voltage for interpreting the external telephone as being hooked up (based on the network's standard voltage) (Not used) No.
WSW51 (Function setting 16) Selector No. Function Setting and Specifications 1 Output of communications error report when transmission verification report is disabled 2 | 8 Not used. App.
MFC7420/7820N DCP7010/7020/7025 APPENDIX 5. WIRING DIAGRAM This appendix provides the wiring diagram that helps you understand the connections between PCBs.
-1 NFC7820N only -1 CN19-2 -1 CN15-2 -1 -2 -3 -4 CN5-5 -1 -2 -3 -4 -1 -2 -3 CN4-4 -1 CN15-2 -1 -2 -3 -4 -5 CN3-6 FG AO MODE GND VCC VREF TG CLK VLED B-GND G-GND R-GND VDD3 CENTER_THM +3.3V STHM LDHALF GND DATA VCC BD A AB B BB +5V RSEN S0V FSEN +3.
MFC7420/7820N DCP7010/7020/7025 APPENDIX 6. CIRCUIT DIAGRAMS This appendix provides the circuit diagrams of the NCU PCB and power supply PCB. A. NCU PCB: MFC7420 (U.S.A. and CANADA models) NCU PCB: MFC7820N (U.S.A. and CANADA models) NCU PCB: MFC7420 (EUROPE models) NCU PCB: MFC7820N (EUROPE models) B. Power Supply PCB 100V (U.S.A.
A. NCU PCB: MFC7420 (U.S.A.
A. NCU PCB: MFC7820N (U.S.A.
A.
A.
B. Power Supply PCB 100V (U.S.A.
B.
December '04 SM-FAX036(2) 8C5A03 Printed in Japan
