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R
LASER PRINTER
SERVICE MANUAL
MODEL:MFC-P2000 / HL-P2000
Aug., 1998 84U008EB0
© Copyright Brother 1998 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. Specifications are subject to change without notice. Trademarks: The brother logo is a registered trademark of Brother Industries, Ltd. Apple, the Apple Logo, and Macintosh are trademarks, registered in the United States and other countries, and True Type is a trademark of Apple computer, Inc. Epson is a registered trademark and FX-80 and FX-850 are trademarks of Seiko Epson Corporation. Hewlett Packard is a registered trademark and HP Laser Jet is a trademark of Hewlett Packard Company. IBM, IBM PC and Proprinter are registered trademarks of International Business Machines Corporation. Microsoft and MS-DOS are registered trademarks of Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation in the U.S. and other countries.
PREFACE
This service manual contains basic information required for after-sales service of the laser printer (hereinafter referred to as "this machine" or "the printer"). This information is vital to the service technician to maintain the high printing quality and performance of the printer. This service manual covers the MFC-P2000 / HL-P2000 printer. This manual consists of the following chapters:
CHAPTER I :
FEATURES AND SPECIFICATIONS Features, specifications, etc.
CHAPTER II : THEORY OF OPERATION Basic operation of the mechanical system, the electrical system and the electrical circuits and their timing information. CHAPTER III : DISASSEMBLY AND REASSEMBLY Procedures for disassembling and reassembling the mechanical system. CHAPTER IV : MAINTENANCE AND TROUBLESHOOTING Reference values and adjustments, troubleshooting image defects, troubleshooting malfunctions, etc. APPENDICES :SERIAL NO. DESCRIPTIONS, DRUM LIFE & PAGE COUNTER, DIAMETER / CIRCUMFERENCE OF ROLLERS, CONNECTION DIAGRAMS, PCB CIRCUIT DIAGRAMS, ETC.
Information in this manual is subject to change due to improvement or redesign of the product. All relevant information in such cases will be supplied in service information bulletins (Technical Information). A thorough understanding of this printer, based on information in this service manual and service information bulletins, is required for maintaining its print quality performance and for improving the practical ability to find the cause of problems.
CONTENTS
CHAPTER I FEATURES AND SPECIFICATIONS .............................................I-1
1. FEATURES .........................................................................................................................I-1 2. PRINTER OVERVIEW.........................................................................................................I-3 3. SPECIFICATIONS...............................................................................................................I-4
3.1 Printing ...........................................................................................................................................I-4 3.2 Scanning ........................................................................................................................................I-4 3.3 Copying ..........................................................................................................................................I-4 3.4 Functions........................................................................................................................................I-5 3.5 Electrical and Mechanical ..............................................................................................................I-5 3.6 Paper Loading................................................................................................................................I-6 3.7 Print Delivery..................................................................................................................................I-6 3.8 Print Paper .....................................................................................................................................I-7 3.9 Printing Area ..................................................................................................................................I-8 3.10 Document Loading .....................................................................................................................I-10 3.11 Document Delivery.....................................................................................................................I-10
4. SAFETY INFORMATION...................................................................................................I-11
4.1 Laser Safety (110 - 120V Model only)..........................................................................................I-11 4.2 FDA Regulations (110 - 120V Model only)................................................................................... I-11 4.3 IEC 825 (220-240V model only)...................................................................................................I-12 4.4 Additional Information...................................................................................................................I-13 4.5 Caution for Laser Product (Warnhinweis für Laserdrucker).........................................................I-13
CHAPTER II THEORY OF OPERATION ........................................................ II-1
1. ELECTRONICS..................................................................................................................II-1
1.1 1.2 1.3 General Block Diagram.............................................................................................................II-1 Main PCB Block Diagram .........................................................................................................II-2 Main PCB..................................................................................................................................II-3 1.3.1 CPU Core ....................................................................................................................II-3 1.3.2 ASIC ............................................................................................................................II-3 1.3.3 ROM ............................................................................................................................II-6 1.3.4 DRAM ..........................................................................................................................II-6 1.3.5 EEPROM .....................................................................................................................II-7 1.3.6 Reset Circuit ................................................................................................................II-7 1.3.7 CDCC I/O ....................................................................................................................II-7 1.3.8 Engine I/O....................................................................................................................II-8 1.3.9 Paper Feed Motor Drive Circuit ...................................................................................II-9 1.3.10 Document Scanner Circuit.........................................................................................II-10 1.3.11 Scanner Panel I/F......................................................................................................II-10 1.3.12 Scanner Motor Drive Circuit ......................................................................................II-11 1.3.13 CIS Drive Circuit ........................................................................................................ II-11 Panel Sensor PCB ..................................................................................................................II-11
1.4
i
1.5 1.6
Scanner Sensor PCB / Scanner Panel PCB...........................................................................II-11 Power Supply..........................................................................................................................II-12 1.6.1 Low-voltage Power Supply ........................................................................................II-12 1.6.2 High-voltage Power Supply .......................................................................................II-13
2. MECHANICS....................................................................................................................II-14
2.1 2.2 General Overview of Mechanism............................................................................................II-14 Printer Mechanism ..................................................................................................................II-15 2.2.1 Paper Transfer...........................................................................................................II-15 2.2.2 Sensors .....................................................................................................................II-17 2.2.3 Drum Unit ..................................................................................................................II-18 2.2.4 Print Process ............................................................................................................. II-18 Scanner Mechanism ...............................................................................................................II-22 2.3.1 Document Transfer (Feed and Eject) ........................................................................II-22 2.3.2 Scanner .....................................................................................................................II-22
2.3
CHAPTER III DISASSEMBLY AND REASSEMBLY.......................................III-1
1. SAFETY PRECAUTIONS..................................................................................................III-1 2. DISASSEMBLY FLOW......................................................................................................III-2 3. DISASSEMBLY PROCEDURE .........................................................................................III-3
3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 3.14 3.15 3.16 3.17 3.18 3.19 3.20 3.21 3.22 Drum Unit.................................................................................................................................III-3 Output Tray ASSY ...................................................................................................................III-3 Top Cover ................................................................................................................................III-4 Scanner Control Panel ASSY ..................................................................................................III-5 Document Scanner Frame ASSY ............................................................................................III-8 Scanner Rear Cover ASSY / Rear Cover ASSY ...................................................................III-12 MP Rear Sheet Feeder ASSY ...............................................................................................III-13 Fixing Unit ..............................................................................................................................III-14 Laser Unit...............................................................................................................................III-17 Main PCB ASSY ....................................................................................................................III-18 Base Plate ASSY ...................................................................................................................III-19 Panel Sensor PCB ASSY ......................................................................................................III-20 Low-voltage Power Supply PCB ASSY .................................................................................III-21 High-voltage Power Supply PCB ASSY.................................................................................III-22 Sub Fan Motor ASSY ............................................................................................................III-23 Main Fan Motor ASSY ..........................................................................................................III-23 Drive Unit ...............................................................................................................................III-24 Main Motor ASSY ..................................................................................................................III-25 Sub Motor ASSY....................................................................................................................III-25 Document Support / Paper Support.......................................................................................III-26 Extension Support Wire .........................................................................................................III-27 Document Extension Support Wire........................................................................................III-27
4. PACKING........................................................................................................................III-28
ii
CHAPTER IV MAINTENANCE AND TROUBLESHOOTING ......................... IV-1
1. INTRODUCTION.............................................................................................................. IV-1
1.1 1.2 Initial Check ............................................................................................................................ IV-1 Basic Procedure ..................................................................................................................... IV-2
2. MTBF / MTTR .................................................................................................................. IV-2 3. CONSUMABLE PARTS ................................................................................................... IV-3
3.1 3.2 3.3 Drum Unit................................................................................................................................ IV-3 Toner Cartridge....................................................................................................................... IV-3 Periodical Replacement Parts................................................................................................. IV-3
4. IMAGE DEFECTS ............................................................................................................ IV-4
4.1 4.2 4.3 4.4 Image Defect Examples.......................................................................................................... IV-4 Troubleshooting Image Defects.............................................................................................. IV-5 Location of High-voltage Contacts and Grounding Contacts................................................ IV-22 Location of Feed Roller Shaft and Grounding Contacts ....................................................... IV-23
5. DOCUMENT FEEDING PROBLEMS ............................................................................. IV-24 6. PAPER JAM................................................................................................................... IV-26 7. TROUBLESHOOTING MALFUNCTIONS ...................................................................... IV-27 8. PRINTER INSPECTION MODE ..................................................................................... IV-32
8.1 8.2 Incorporated Inspection Modes ............................................................................................ IV-32 Error Codes .......................................................................................................................... IV-34
9. SCANNER INSPECTION MODE ................................................................................... IV-35
9.1 9.2 9.3 9.4 Test Mode A.......................................................................................................................... IV-35 Test Mode B.......................................................................................................................... IV-37 Scanner Error Indications ..................................................................................................... IV-38 Scanner Service Error .......................................................................................................... IV-40
APPENDICES
1. SERIAL NO. DESCRIPTIONS .......................................................................................... A-1 2. HOW TO KNOW DRUM UNIT LIFE & PAGE COUNTER ................................................ A-2 3. DIAMETER / CIRCUMFERENCE OF ROLLERS .............................................................. A-4 4. CONNECTION DIAGRAM................................................................................................. A-5 5. MAIN PCB CIRCUIT DIAGRAM, (1/3)............................................................................... A-6 6. MAIN PCB CIRCUIT DIAGRAM, (2/3)............................................................................... A-7 7. MAIN PCB CIRCUIT DIAGRAM, (3/3)............................................................................... A-8 8. PANEL SENSOR PCB CIRCUIT DIAGRAM ..................................................................... A-9 9. SCANNER PANEL PCB CIRCUIT DIAGRAM ................................................................. A-10 10. SCANNER SENSOR PCB CIRCUIT DIAGRAM.............................................................. A-11 11. LOW-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM, (110 - 120V).................. A-12 12. LOW-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM, (220 - 240V).................. A-13 13. HIGH-VOLTAGE POWER SUPPLY PCB CIRCUIT DIAGRAM....................................... A-14
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CHAPTER I
1. FEATURES
FEATURES AND SPECIFICATIONS
This printer has the following features: Three Functions in One Printer This printer provides two additional functions, copying and scanning besides the printing function. You no longer need a lot of peripherals and can save space in your office. This is helpful especially for SOHO users. High Resolution and Fast Printing Speed True 600 dots per inch (dpi) with microfine toner and 10 pages per minute (ppm) printing speed (A4 or Letter paper). Enhanced Printing Performance and User-Friendly Operation for Windows The dedicated printer driver and TrueTypeTM-compatible fonts for Microsoft® Windows 3.1 and Windows 95/98 are available on the floppy disk and CD-ROM supplied with your printer. You can easily install them into your Windows system using our installer program. The driver supports our unique compression mode to enhance printing speed in Windows applications and allows you to set various printer settings including toner saving mode, custom paper size, sleep mode, gray scale adjustment, resolution and so forth. You can easily setup these print options in the graphic dialog boxes through the Printer Setup menu within the Windows Control Panel. Printer Status Monitor with Bi-directional Parallel Interface The printer driver can monitor your printer's status using bi-directional parallel communications. A high quality bi-directional parallel printer cable to the IEEE 1284 standard is recommended. The printer status monitor program can show the current status of your printer. When printing, an animated dialog box appears on your computer screen to show the current printing process. If an error occurs, a dialog box will appear to let you know what to correct. For example: when your printer is out of paper, the dialog box will display "No Paper" and instructions for the corrective action to take. Versatile Paper Handling The printer has a multi-purpose sheet feeder and a straight paper path mechanism. Using this mechanism, you can load A4, letter, legal, B5, A5, A6, and executive sizes of paper, and various types of media including envelopes, organizer paper, or your custom paper size. Easy Copier Operation The copy function is easy to operate. All the operations and settings (scaling, mode, and number of copy settings) can be set on the scanner control panel. Document Management Application `Visioneer PaperPort® LE Software' (MFCP2000) Visioneer PaperPort® LE Software is a document management application which contains a viewer, editor and filing system and various links to other applications. Visioneer PaperPort® LE Software is a sophisticated application and has widespread industry acceptance and endorsements.
I-1
Sophisticated Viewer Software `WordCraft UnimessageTM Viewer Software' (HLP2000) WordCraft UnimessageTM Viewer is a sophisticated viewer for displaying and editing graphic files. In addition to the usual image editing functions (object drawing, annotations, highlighting, etc.) you will also be able to use this software to view both color and monochrome images, create cover sheets for use with HL-P2000, display thumbnails of graphics files in any of your directories and set up a referencing system for your files using DIR (Document Indexing Retrieval). TWAIN Compliant Scanner Driver The scanner driver is TWAIN compliant which is a defacto standard. You can use the scanner from other TWAIN compliant applications as well as the PaperPort application or UnimessageTM viewer application.
Economy Printing Mode
This feature will cut your printing cost by saving toner. It is useful to obtain draft copies for proof-reading. You can select from two economy modes, 25% toner saving and 50% toner saving, through the Windows printer driver supplied with your printer.
Environment-Friendly
Sleep Mode (Power Save Mode)
Sleep mode automatically reduces power consumption when the printer is not in use. The printer consumes less than 13W when in sleep mode.
Low Running Cost
The toner cartridge is separate from the drum unit. You need to replace only the toner cartridge after around 2,400 pages, which is cost effective and ecologically friendly. The actual number of pages printed with each toner cartridge may vary depending on your average type of print job. Enhanced Memory Management The printer provides its own data compression technology in its printer hardware and the supplied printer driver software, which can automatically compress graphic data and font data efficiently into the printer's memory. You can avoid memory errors and print most full page 600 dpi graphic and text data, including large fonts, with the standard printer memory. Remote Printer Console Program for DOS The utility program, Remote Printer Console (RPC), is available on the floppy disk and CD-ROM supplied with your printer. When you operate your computer in the DOS (Disk Operating System) environment, this program allows you to easily change the default settings of the printer such as fonts, page setup, emulations and so on. This program also provides a status monitor program, which is a Terminate-and-Stay Resident (TSR) program. It can monitor the printer status while running in the background and report the current status or errors on your computer screen. Popular Printer Emulation Support The printer supports the HP LaserJet IIP, Epson FX-850, and IBM Proprinter XL emulations. When you use DOS application software or Windows version 3.0 or earlier, you can use any of these emulations to operate the printer in the 300 dpi resolution mode. The printer also supports Auto-emulation switching between HP and Epson or HP and IBM. If you want to set the emulation, you can do it using the Remote Printer Console Program.
I-2
2.
PRINTER OVERVIEW
Document Support Paper Support Automatic Document Feeder (ADF)
Paper Guide
Top Cover
Scanner Control Panel
Document Extension Support Wire
Extension Support Wire Output Tray
Printer Control Panel
Fig. 1-1
Multi-purpose Sheet Feeder
Parallel Interface Port AC Inlet
Power Switch
Power Cord Fig. 1-2
I-3
3.
3.1
SPECIFICATIONS
Printing Print method Laser Electrophotography by semiconductor laser beam scanning Wave length: Output: 780 nm 5 mW max.
Print resolution Print speed
600 x 600 dots/inch (dpi) (for Windows or DOS) Up to 10 pages/minute (ppm) (when loading A4 or Letter-size paper from the multipurpose sheet feeder) Max. 30 seconds at 23°C (73.4°F) 15 seconds (when loading Letter-size paper from the multipurpose sheet feeder) Toner cartridge Life Expectancy: 2,400 pages/cartridge (when printing A4 or letter-size paper at 5% print coverage) Drum unit, separated from toner cartridge Life Expectancy: 20,000 pages/drum unit at 20 pages per job 8,000 pages at 1 page per job (at 4% coverage)
Warm-up First print
Print media
Developer
3.2
Scanning Scan method Scan resolution Scan speed CIS (Contact Image Sensor) system 600 x 600 dpi class with 256 levels of gray 3 ppm
Effective scanning width 208 mm 3.3 Copying Scaling Enlargement / Reduction ratio For U.S.: 150%, 120%, 78%, 50% For Europe: 200%, 141%, 71%, 50% 300 x 600 dpi class 1 copy: 20 second (3 ppm) 2 copies or more: 6 second (10 ppm) Up to 10 sheets Text mode, Photo mode
Copy resolution Copy speed
Document setting Mode setting
I-4
PR99017 3.4 Functions CPU Emulation MC68EC000 16 Mhz Brother Printing Solution for Windows Automatic emulation selection among HP LaserJet IIP (PCL level 4), EPSON FX-850, and IBM Proprinter XL WindowsTM 3.1/3.11, Windows 95/98 and Windows NT 4.0 driver, supporting Brother Native Compression mode and bi-directional capability. Bi-directional parallel interface TWAIN 1.6 compatible 2.0 Mbytes For U.S.: Visioneer PaperPort LE Software For Europe: :RUG&UDIW 8QLPHVVDJH 9LHZHU Text Bridge (Xerox)
Printer driver
Printer Interface Scanner Interface Memory Viewer OCR software
Printer Control Panel 1 switch and 4 lamps Scanner Control Panel 4 keys, 5 lamps, and 1 seven-segment LED Diagnostics 3.5 Self-diagnostic program
Electrical and Mechanical Power source Power consumption U.S.A. and Canada: Europe and Australia: Printing (peak): Printing (average): Copying: Standing by: Sleep: Printing: Standing by: Operating: Storage: Operating: Storage: AC 110 to 120V, 50Hz/60Hz AC 220 to 240V, 50Hz/60Hz 820W or less 280W or less 180W or less 60W or less 13W or less
Noise Temperature Humidity Dimensions (W x D x H) Weight
49dB A or less 33dB A or less 10 to 32.5°C (50 to 90.5°F) 0 to 40°C (38 to 104°F) 20 to 80% (non condensing) 10 to 85% (non condensing)
390 x 371 x 283 mm (15.4 x 14.6 x 11.1 inches) (when the output tray is closed.) Approx. 8.5 kg (18.7lb.) including the drum unit and toner cartridge
Note: N The peak figure of power consumption is worked out when the halogen heater lamp is turned ON. N The peak figure of power consumption is worked out excluding inrush current value. N Be sure that the peak figure of power consumption is reference value and should be used inside the Brother offices only.
I-5
3.6
Paper Loading Paper size: A4, Letter, Legal, B5, A5, A6, and Executive. Other sizes of media that can be handled by the feed mechanism can be loaded into the multi-purpose sheet feeder. (Refer to Fig. 1-1.)
69.8 to 229 mm
105 to 356mm (face down)
Feeding direction
Feedable paper weight: 60 (16 lb.) to 157 (42 lb.) g/m Maximum load height : Setting method:
2
22 mm (200 sheets of 80g/m paper) letter or A4 size Pull the MP sheet feeder cover toward you, insert the stack of paper into the feeder, aligning the top edge of the sheets, then push the cover back to its original position.
2
Cautions: Before loading paper with holes such as organizer sheets, be sure to fan the stack well. When printing on the back of pre-printed paper, be sure to straighten the paper as much as possible.
3.7 Print Delivery (1) (2) With the output tray opened Tray capacity: Maximum 100 sheets (80g/m2), face-down only With the output tray closed 1 sheet (80g/m2), face-down only
Note: Face down: Environment :
Deliver the printed face of the paper downward. 23°C
I-6
3.8
Print Paper (1) Paper type (a) Normal paper (60 to 157 g/m2, specified types of high-quality paper) · · · · · · · A4 size Letter size Legal size B5 (JIS ISO) size A5 size A6 size Executive size
* The recommended types of plain paper are as follows: Letter : Xerox 4200 (75g/m2) A4 : Xerox 80 Premier Paper (80g/m2) (b) Special paper (specified types) · Labels · Envelopes (DL, C5, COM-10, Monarch) · Organizers (K, L, and J sizes of DAY-TIMERS) (C) Other detailed specifications Cut Sheet Basis Weight 60 to 157 g/m (16 to 42 lb.)
2
Caliper Moisture Content
0.03 to 0.08 in.
(0.08 to 0.2 mm) 4% to 6% by weight
Envelope 2 75 to 90 g/m (20 to 24 lb.) single thickness 0.0033 to 0.0058 in. (0.084 to 0.14 mm) single thickness 4% to 6% by weight
Caution: It is recommended to use long-grained paper for the best print quality. If short-grained paper is being used, it might be the cause of paper jams. Use neutral paper. Do not use acid paper to avoid any damage to the printer drum unit.
(2) Paper feed conditions Type Name 60 to 80 g/m Normal paper (cut sheet)
2 2
Feeder
Number of sheets 200 sheets 100 sheets 30 sheets 50 sheets 10 sheets 10 sheets
80 g/m paper (Legal) 157 g/m Labels
2
Special paper (cut sheet)
Envelopes Organizers
I-7
3.9
Printing Area (1) Effective printing area (a) Supported by the engine
211mm 25 25 2,100 (80 characters)
(b) Supported by the emulation
4.23mm
Note: The units in the above figure are dot size based on 300 dpi resolution. 25 dots at both sides is for italic characters.
4.23mm
The effective printing area means the area within which the printing of all the data received without any omissions can be guaranteed.
(2)
Print guaranteed area
A C E
F E
B
D
F
I-8
The table below shows the print guaranteed areas for each paper size. Size A4 A 210.0 mm 8.27" (2,480 dots) 215.9 mm 8.5" (2,550 dots) 215.9 mm 8.5" (2,550 dots) 182.0 mm 7.16" (2,149 dots) 176.0 mm 6.93" (2,078 dots) 184.15 mm 7.25" (2,175 dots) 148.5 mm 5.85" (1,754 dots) 105.0 mm 4.13" (1,240 dots) 69.85 mm 2.75" (825 dots) 95.25 mm 3.75" (1,125 dots) 139.7 mm 5.5" (1,650 dots) 104.78 mm 4.125" (1,237 dots) 98.43 mm 3.875" (1,162 dots) 162 mm 6.38" (1,913 dots) 110 mm 4.33" (1,299 dots) B 297.0 mm 11.69" (3,507 dots) 279.4 mm 11.0" (3,300 dots) 355.6 mm 14.0" (4,200 dots) 257.0 mm 10.12" (3,035 dots) 250.0 mm 9.84" (2,952 dots) 266.7 mm 10.5" (3,150 dots) 210.0 mm 8.27" (2,480 dots) 148.5 mm 5.85" (1,754 dots) 127.0 mm 5.0" (1,500 dots) 171.45 mm 6.75" (2,025 dots) 215.9 mm 8.5" (2,550 dots) 241.3 mm 9.5" (2,850 dots) 190.5 mm 7.5" (2,250 dots) 229 mm 9.01" (2,704 dots) 220 mm 8.66" (2,598 dots) C 203.2 mm 8.0" (2,400 dots) 203.2 mm 8.0" (2,400 dots) 203.2 mm 8.0" (2,400 dots) 173.5 mm 6.83" (2,007 dots) 164.0 mm 6.46" (1,936 dots) 175.7 mm 6.92" (2,025 dots) 136.5 mm 5.37" (1,612 dots) 93.0 mm 3.66" (1,098 dots) 56.2 mm 2.21" (675 dots) 86.78 mm 3.42" (975 dots) 131.23 mm 5.17" (1,500 dots) 92.11 mm 3.63" (1,087 dots) 85.7 mm 3.37" (1,012 dots) 150.0 mm 5.9" (1,771 dots) 98.0 mm 3.86" (1,157 dots) D 288.5 mm 11.36" (3,407 dots) 270.9 mm 10.67" (3,200 dots) 347.1 mm 13.67" (4,100 dots) 248.5 mm 9.78" (2,935 dots) 241.5 mm 9.5" (2,852 dots) 258.2 mm 10.17" (3,050 dots) 201.5 mm 7.93" (2,380 dots) 140.0 mm 5.51" (1,654 dots) 118.5 mm 4.66" (1,400 dots) 162.98 mm 6.42" (1,925 dots) 207.43 mm 8.17" (2,450 dots) 232.8 mm 9.16" (2,750 dots) 182.0 mm 7.16" (2,150 dots) 220.5 mm 8.68" (2,604 dots) 211.5 mm 8.33" (2,498 dots) E 3.4 mm 0.13" (40 dots) 6.35 mm 0.25" (75 dots) F 4.23 mm 0.17" (50 dots)
Letter
Legal
6.01 mm 0.24" (71 dots)
B 5 (JIS)
B 5 (ISO)
6.35 mm 0.25" (75 dots) 6.01 mm 0.24" (71 dots)
Executive
A5
A6 Organizer (J size) Organizer (K size) Organizer (L size) COM-10
6.35 mm 0.25" (75 dots)
6.01 mm 0.24" (71 dots)
MONARCH
C5
DL
(Note that the paper sizes indicated here should conform to the nominal dimensions specified by JIS.)
A4 paper must accommodate 80 characters printed in pica pitch (203.2 mm). The dot size is based on 300 dpi resolution. Organizer is not supported by any printer emulations (commands).
I-9
3.10
Document Loading Documents with the specification below should be loaded into the automatic document feeder (ADF). (Refer to Fig. 1-1.) (1) Feedable document size / thickness / weight Size Thickness Weight 70 - 216 x 100 - 360 mm ADF: ADF: 0.08 - 0.12 mm 64 - 90 g/m
2 2
One page: 0.07 - 0.20 mm One page: 52 - 158 g/m (2) Maximum load 10 sheets (3) Document type Normal paper (4) Setting Face down 3.11 Document Delivery (1) Method 600 dpi/step by clockwise rotation of the scanning stepper motor (2) Document output tray · · (3) On the top cover On the document extension wire (when it is opened)
Document output capacity (on the document extension wire) 10 sheets (Document alignment cannot be guaranteed.)
I-10
4.
4.1
SAFETY INFORMATION
Laser Safety (110 - 120V Model only) This printer is certified as a Class 1 laser product under the US Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968. This means that the printer does not produce hazardous laser radiation. Since radiation emitted inside the printer is completely confined within the protective housings and external covers, the laser beam cannot escape from the printer during any phase of user operation.
4.2
FDA Regulations (110 - 120V Model only) The US Food and Drug Administration (FDA) has implemented regulations for laser products manufactured on and after August 2, 1976. Compliance is mandatory for products marketed in the United States. One of the following labels on the back of the printer indicates compliance with the FDA regulations and must be attached to laser products marketed in the United States. The label for Japanese manufactured products MANUFACTURED: BROTHER INDUSTRIES, LTD. K
15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561, Japan. This product complies with FDA radiation performance standards, 21 CFR Subchapter J. The label for Chinese manufactured products MANUFACTURED : BROTHER Corporation (Asia) Ltd. Shenzen Buji Nan Ling Factory Gold Garden Ind., Nan Ling Village, Buji, Rong Gang, Shenzhen, CHINA This product complies with FDA radiation performance standards, 21 CFR Subchapter J. C
Caution Use of controls, adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure.
I-11
4.3
IEC 825 (220-240V model only) This printer is a Class 1 laser product as defined in IEC 825 specifications. The label shown below is attached in countries where required.
CLASS 1LASER PRODUCT APPAREIL Å LASER DE CLASSE 1 LASER KLASSE 1 PRODUKT
This printer has a Class 3B Laser Diode which emits invisible laser radiation in the Laser Unit. The Laser Unit should not be opened under any circumstances. Caution Use of controls, adjustments or performance of procedures other than those specified in this manual may result in hazardous radiation exposure. The following caution label is attached near the laser unit.
CAUTION ADVARSEL VARNING VARO! ADVARSEL ATTENTION VORSICHT ATENCIÓN
INVISIBLE LASER RADIATION WHEN OPEN AND INTERLOCK DEFEATED. AVOID DIRECT EXPOSURE TO BEAM. CLASS 3B LASER PRODUCT. USYNLIG LASER STRÅLING NÅR KABINETLÅGET STÅR ÅBENT. UNGDÅ DIREKTE UDSÆTTELSE FOR STRÅLING. KLASSE 3B LASER. OSYNLIG LASERSTRÅLNING NÄR DENNA DEL ÄR ÖPPNAD OCH SPÄRRAR ÄR URKOPPLADE. STRÅLEN ÄR FARLIG. KLASS 3B LASER APPARAT. AVATTAESSA JA SUOJALUKITUS OHITETTAESSA OLET ALTTIINA NÄKYMÄTTÖMÄLLE LASERSÄTEILYLLE. ÄLÄ KATSO SÄTEESEEN. LUOKAN 3B LASERLAITE. USYNLIG LASERSTRÅLING.UNNGÅ DIREKTE KONTAKT MED LASERENHETEN NÅR TOPPDEKSELET ER ÅPENT. KLASSE 3B LASERPRODUKT. RADIATIONS LASER INVISIBLES QUANDOUVERT ET VERROUILLAGE ENLEVE. EVITER EXPOSITIONS DIRECTES AU FAISCEAU. PRODUIT LASER CLASSE 3B. UNSICHTBARE LASERSTRAHLUNG WENN ABDECKUNG GEÖFFENT UND SICHERHEITSVERRIEGELUNG ÜBERBRÜCKT. NICHT DEM STRAHL AUSSETZEN. SICHERHEITSKLASSE 3B. RADIACIÓN LASER INVISIBLE CUANDO SE ABRE LA TAPA Y EL INTERRUPTOR INTERNO ESTÁ ATASCADO. EVITE LA EXPOSICIÓN DIRECTA DE LOS OJOS. PRODUCTO LASER CLASE 3B.
For Finland and Sweden LUOKAN 1 LASERLAITE KLASS 1 LASER APPARAT Varoitus! Laitteen käyttäminen muulla kuin tässä käyttöohjeessa mainitulla tavalla saattaa altistaa käyttäjän turvallisuusluokan 1 ylittävälle näkymättömälle lasersäteilylle. Varning Om apparaten används på annat sätt än i denna Bruksanvisning specificerats, kan användaren utsättas för osynlig laserstrålning, som överskrider gränsen för laserklass 1.
I-12
4.4
Additional Information When servicing or adjusting the optical system of the printer, be careful not to place a screwdriver or other reflective object in the path of the laser beam. Be sure to take off any personal accessories such as watches and rings before working on the printer. A reflected beam, though invisible, can permanently damage the eyes.
4.5
Caution for Laser Product (Warnhinweis für Laserdrucker) CAUTION: When the machine during servicing is operated with the cover open, the regulations of VBG 93 and the performance instructions for VBG 93 are valid. In case of any trouble with the laser unit, replace the laser unit itself. To prevent direct exposure to the laser beam, do not try to open the enclosure of the laser unit. Im Falle von Störungen der Lasereinheit muß diese ersetzt werden. Das Gehäuse der Lasereinheit darf nicht geöffnet werden, da sonst Laserstrahlen austreten können.
CAUTION:
ACHTUNG:
Window
Fig. 1-3
I-13
CHAPTER II
1.
1.1
THEORY OF OPERATION
ELECTRONICS
General Block Diagram Fig. 2-1 shows a general block diagram of the MFC-P2000 / HL-P2000 printer.
Control system Scanner block CIS
Low-voltage power supply block
Video control block
Interface block
Engine control block
Operation block (Operation panel) Erase lamp
High-voltage power supply block
Laser scanner unit
Drive block (Stepping motor)
Paper tray unit Paper tray
Drum unit Transfer block
Manual feed
Fixing unit Developing block Charging block Drum Cleaner block
Paper eject block
Paper feed system Toner cartridge
Image generation system
Fig. 2-1
II-1
External device
1.2
Main PCB Block Diagram Fig. 2-2 shows the block diagram of the main PCB.
A S I C CPU Core Reset Circuit (MC68EC000) BUS INT Oscillator (15.3MHz)
Address Decoder Program + Font ROM 1Mbyte DRAM Control
Timer RAM (2.0 Mbytes) FIFO
Sub ASIC
DATA EXTENSION
CDCC Parallel I/O CIS Scan IC
To PC
Soft Support
EEPROM (512
8 bits)
EEPROM I/O
Motor Driver
Engine Control I/O
To Panel Sensor PCB
Fig. 2-2
II-2
1.3
Main PCB 1.3.1 CPU Core Fig. 2-3 shows the CPU circuit block on the main PCB. The CPU is a Motorola MC68EC000FN16 which is driven at a clock frequency of 15.3 MHz. This clock frequency is made by dividing the source clock of 30.67 MHz by two.
Fig. 2-3
1.3.2
ASIC
The ASIC is composed of a Cell Based IC that contains the following functional blocks. (1) Oscillator circuit Generates the main clock for the CPU by dividing the source clock frequency by two. (2) Address decoder Generates the CS for each device. (3) DRAM control Generates the RAS, CAS, WE, OE and MA signals for the DRAM and controls refresh processing (CAS before RAS self-refreshing method). (4) Interrupt control Interrupt levels: Priority High 7 6 5 4 3 2 Low 1 NMI FIFO SCANINT BD / Timer 1 SCANINT CDCC / BOISE / DATA EXTENSION Timer 2
II-3
(5)
Timers The following timers are incorporated: Timer 1 Timer 2 Timer 3 16-bit timer 10-bit timer Watch-dog timer
(6)
FIFO A 5,120-bit FIFO is incorporated. Data for one raster scan is transferred from the RAM to the FIFO by DMA transmission and is output as serial video data. The data cycle rate is 10.22 MHz.
(7)
CDCC parallel I/O There are two modes in this unit. One is the CPU receiving mode and the other is the DMA receiving mode. In the CPU receiving mode the CPU receives the command data from the PC, and after the CPU is switched to the DMA mode, it receives the image data and writes to the DRAM directly. CPU Receive Mode
STROBE
BUSY ACK 90 µsec 0.5 µsec
DMA Receive Mode
STROBE
BUSY ACK 1.5 µsec 0.5 µsec
BUSY goes HIGH at the falling edge of STROBE. The data (8 bits) from the PC is latched in the data buffer at the rising edge of STROBE. The pulse width of ACK differs according to the speed MODE as shown above. BUSY goes LOW at the rising edge of ACK. This supports the IEEE1284 data transfer with the following modes. Nibble mode Byte mode (8) Data expansion This circuit expands the compressed image data received from the PC, and writes the bit map data to the FIFO. (9) Software support Supports 16 x 16 rotation, bit expansion and bit search.
II-4
(10)
EEPROM I/O One output port and one I/O port are assigned.
(11)
Engine control I/O This I/O is used for the connection to the panel sensor PCB. It controls the main motor, solenoid, sensors, etc.
Fig. 2-4
II-5
1.3.3
ROM
A program file of 1 Mbyte and the font data are stored in the ROM.
Fig. 2-5
1.3.4
DRAM
A 16M-bit DRAM (x 16 bits) is used as the RAM.
Fig. 2-6
II-6
1.3.5
EEPROM
The EEPROM is an X24C04 type of two-wire method with a 512 x 8 bits configuration. M62320FP is an IC which transfers the data received from the serial I/O to the parallel I/O.
Fig. 2-7
1.3.6
Reset Circuit
The reset IC is a PST598DNR. The reset voltage is 4.2V (typ.) and the LOW period of reset is 200ms (typ.).
Fig. 2-8
1.3.7
CDCC I/O
Fig. 2-9 shows the CDCC interface circuit.
Fig. 2-9
II-7
1.3.8
Engine I/O
Fig. 2-10 shows the engine interface circuit.
Fig. 2-10
II-8
1.3.9
Paper Feed Motor Drive Circuit
The paper feed motor driver is a TR array. The excitation method is 2-2 phase excitation with a bipolar drive.
Fig. 2-11
II-9
1.3.10 Document Scanner Circuit The image processing LSI, SANYO LC82103 transfers the analog signal from the CIS into a digital signal. The gate array, NEC PD65646 stores the digital signal in DRAM with DMA (direct memory access). The document scanner circuit also provides the motor drive pulse generating circuit, PWM (pulse width modulation) circuit for CIS current adjustment and general purpose I/O.
Fig. 2-12
1.3.11 Scanner Panel I/F The scanner panel interface is a serial interface. The front sensor and rear sensor are directly connected to the NEC PD65646.
Fig. 2-13
II-10
1.3.12 Scanner Motor Drive Circuit The scanner motor is controlled by unipolar constant current control. The combination of the current flow and the phase excitation method is changed by the scanner motor speed.
Fig. 2-14
1.3.13 CIS Drive Circuit The current to the CIS LED is controlled by PWM. The analog signal from the CIS is input into the LC82103.
Fig. 2-15
1.4
Panel Sensor PCB The following parts are on the printer panel sensor PCB. · Control panel ......1 switch, 4 lamps · Connector ...........low-voltage, high-voltage, solenoid, main motor, toner sensor, laser, polygon motor, connector for main PCB · Registration sensor
1.5
Scanner Sensor PCB / Scanner Panel PCB The following parts are on the scanner sensor PCB and scanner panel PCB. · Control panel ......4 keys, 5 lamps, 1 seven-segment LED · Document front sensor · Document rear sensor
II-11
1.6
Power Supply 1.6.1 Low-voltage Power Supply The low-voltage power supply uses a switching regulation system to generate the regulated DC power (+5V and +24V), which are converted from the AC line. The regulated output and the production code of each power supply are listed below; Regulated Output +5V / 1.2A +24V / 2.0A Production Code 100V: MPW1550 200V: MPW1450
(Heater)
Thermal Fuse Heater Circuit Lamp
Fuse
Lightning Surge Absorber
Feedback
Line Filter
Rectifier
Oscillator
(Panel Sensor Circuit)
24V Regulation Circuit
24V
5V Regulation Circuit
5V
Fig. 2-16
II-12
1.6.2
High-voltage Power Supply
The high-voltage power supply generates and outputs the voltages and currents for the charging, development and transfer functions.
R1 24VI
Current Regulator
B1
Voltage Regulator
Transfer Roller Supply Roller Photosensitive Drum Development Roller Cleaning Roller
VR22
Current Regulator Corona Unit B81 Q81
Voltage Regulator
B101 Q101 GND Current Regulator
B121 Q121
PAPER SENSOR Voltage Regulator
PC141
Z51
VR51
Voltage Regulator
VR71 Voltage Regulator
VR61
Fig. 2-17
II-13
2.
2.1
MECHANICS
General Overview of Mechanism
Papers Multi-purpose Sheet Feeder Scanner Control Panel Paper Pick-up Roller Paper Feed Roller
Drum Unit Photosensitive Drum Transfer Roller Erase Lamp Fixing Unit Pressure Roller Eject Roller
Pinch Roller Blade Hopper Plate Registration Sensor Lever
Toner Cartridge Polygon Mirror Development Roller Toner Empty Laser Scanner Sensor Supply Roller Corona Wire Laser Unit
Eject Sensor Actuator Heat Roller Thermistor Cleaning Roller
Fig. 2-18
Document Front Sensor Scanner Sensor PCB Scan Motor CIS EL PCB Laser Unit Main Motor Sub Motor Main Fan Motor Sub Fan Motor Solenoid Primary Charger (Corona Wire) Primary Charger (Grid) Development Roller Transfer Roller Cleaning Roller Supply Roller Eject Sensor Registration Sensor Toner Empty Sensor Thermistor (for Toner) Thermistor (for Heat roller) Document Rear Sensor Scanner Panel PCB
Main Cotrol PCB
Panel Sensor PCB
HighVoltage Power Supply
Toner Empty Sensor PCB
Fig. 2-19
II-14
2.2
Printer Mechanism 2.2.1 Paper Transfer 1) Paper Supply The paper pick-up roller picks up one sheet of paper from the paper feeder every time it is rotated and feeds it to the paper feed roller.
Papers Pick-up roller
Registration sensor lever
Hopper plate
Separation pad Fig. 2-20
The paper is gripped between the pick-up roller and the separation pad and separated into individual sheets. The pick-up roller is directly connected to the sector gear, whose rotation is forcibly stopped by the gear stopper. When the pick-up solenoid is activated, the clutch mechanism is engaged by the solenoid action and the sector gear is driven; when it has completed one full turn its rotation is stopped again by the gear stopper. The paper drawn out by the pick-up roller pushes against the top of form sensor lever and the paper top position/absence of paper is detected by sensing the motion of the lever. 2) Paper Registration
When paper picked up from the multi-purpose sheet feeder pushes against the top of form sensor actuator, the registration sensor lever is caused to turn, and the photo sensor detects this motion. When this signal from the sensor is detected the paper feed roller is stopped temporarily by the clutch. The paper is fed to the nip point between the paper feed roller and the pinch roller in the multi-purpose sheet feeder, and the skew of the paper is corrected by pushing the leading edge of the paper against the nip point. When the paper feed roller starts to be rotated again when it is released by the clutch, paper, with the leading edge correctly aligned, is fed by the paper feed roller and is transported to the transfer roller.
Paper Pinch roller Transfer roller
Paper feed roller Drum Clutch mechanism (engaged/released by the solenoid assembly) Released when the solenoid is ON and engaged when the solenoid is OFF. Fig. 2-21
II-15
3) (a)
Paper Eject When the leading edge of the paper pushes down the eject sensor actuator located in the fixing unit, the photo sensor (photo interrupter) is opened and detects the start of paper eject. When the trailing edge of the paper has passed through the paper eject sensor actuator, the photo sensor is closed and the completion of paper eject is recognized.
Transfer roller
The completion of paper eject is detected in the following manner:
(b)
Pressure roller
Eject sensor actuator Eject roller
Drum Heat roller Fig. 2-22
Eject sensor actuator
High-voltage power Eject sensor actuator supply PCB
, ,
Paper Sensor Sensor Fig. 2-23
II-16
2.2.2 Sensors 1) Cover Sensor Detects opening and closing of the top cover.
Top Cover
Cover Switch Fig. 2-24
2)
Toner Empty Sensor
Detects if there is toner in the toner cartridge. It also detects whether or not the drum unit is installed. (The toner cartridge is installed in the drum unit).
Toner Empty Sensor
Fig. 2-25
II-17
2.2.3 Drum Unit 1) Photosensitive Drum Generates the latent electrostatic image and develops the image on the drum surface. 2) (a) (b) Primary Charger Corona wire Generates the ion charge on the drum. Grid Spreads the ion charge evenly over the drum surface. 3) Development Roller
Forms a uniform charge on the drum surface.
Develops the latent electrostatic image on the drum surface by the addition of the toner. 4) Transfer Roller
Transfers the toner image to the paper from the drum surface. 5) Cleaning Roller
Removes and recycles the toner remaining on the drum surface. 6) Erase Lamp
Discharges the electrostatic latent image on the drum. 2.2.4 Print Process 1) Charging The drum is charged to approx. +1150V 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 drum sleeve is regulated to approx. 280V by the voltage regulator.
280V Passive Type Voltage Regulator
Voltage Regulator
+ + + -- + ++ - - - ++ + + 1150V + + + + + + + + + ++
Corona wire Fig. 2-26
-
Aluminum drum sleeve Drum Organic Photoconductor layer Grid
HVPS
The primary charge uses a corona wire, but since the drum is positively charged, only less than 1/10 of the usual quantity of ozone is generated compared with the negatively charged drum. The level of ozone expelled from the printer is therefore not harmful to the human body. Applicable safety standards have been complied with.
II-18
2)
Exposure Stage
After the drum is positively charged, it is exposed to the light emitted from the laser unit.
Drum Laser Beam
Paper Laser beam f lens Laser detector Laser diode Motor Lens Fig. 2-27 Polygon mirror
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.
1 Cycle of drum
1 4 2
Primary charging Laser beam exposure and developing (a) Unexposed area ( Non image area ) (b) Exposed area ( Image area ) Transfer the image to paper Erase the residual potential
Surface Potential (V)
1 +1150
2 (a)
3
+700 (b)
3 4
+400 Drum +300 Sleeve Time
Fig. 2-28
II-19
3)
Developing
Developing causes the toner to be attracted to the electrostatic image on the drum so as to transform it into a visible image. The developer consists of a non-magnetic toner. The development roller is made of conductive rubber and the supply roller (which is also made of conductive sponge) rotate against each other. The toner is charged and carried from the supply roller to the development roller. The toner adheres to the development roller and is conveyed to the drum at an even thickness controlled by the blade. The toner is nipped between the development roller and the drum and developed onto the latent image on the drum. The electrostatic field between the drum and the development roller, which is DC-biased from the high-voltage power supply, creates the electrostatic potential to attract toner particles from the development roller to the latent image area on the drum surface.
(a) Transfer process [ON] Transfer roller Blade Toner Separator (b) Cleaning process [ON]
Auger
Drum Erase lamp
Develop housing
(a) Collecting process
Supply roller (b) Discharging process DC-bias SR-bias Development roller Fig. 2-29 Cleaning roller Charger
4) (a)
Transfer Transfer process After the drum has been charged and exposed, and has received a developed image, the toner image formed on the drum 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.
(b)
Cleaning process of transfer roller If the toner is not transferred onto the paper perfectly, it is possible that there may be residual toner on the drum which will adhere to the transfer roller. The transfer voltage changes to a positive voltage during non-printing rotation of the drum. Therefore the transfer roller is cleaned by returning the positively charged toner adhering to the transfer roller onto the photo-conductive drum.
II-20
5)
Drum Cleaning Stage
In the image transfer stage, not all the toner on the photosensitive drum is transferred onto the paper but some remains on the drum. In the drum cleaning stage, the drum surface is cleaned by the cleaning roller, so that residual toner on the drum surface is removed and collected on the cleaning roller itself. The residual toner on the cleaning roller will be discharged to the drum during starting or non-printing time. The toner will be collected by the developing roller and reused (for further developing). 6) Erasing Stage
Before the cleaning stage, the drum surface is exposed to the light emitted from the erase lamp (LED lamp). This stage prepares the drum by decreasing its surface voltage uniformly, ready to receive a uniform charge in the primary charging stage. 7) Fixing Stage
The image transferred to the paper by static electricity is fixed by heat and pressure when passing through the heat roller and the pressure roller in the fixing unit. The thermistor ASSY keeps the surface temperature of the heat roller constant by detecting the surface temperature of the heat roller and turning on or off the halogen heater lamp.
Thermistor ASSY
Halogen heater lamp
,, , ,,,,,,,, , , ,, ,,,,,,,,,, ,, , , , , ,,,,,,,,,,, ,,,,, ,, , ,
Pressure roller
,,,,, ,, ,, ,,, ,,,,
Heat roller Cleaner ASSY Fig. 2-30
II-21
2.3
Scanner Mechanism
Document ADF parts Document front sensor actuator Document rear sensor actuator Document feed roller Document pressure bar Document eject roller Separation roller
Pressure roller CIS unit Pinch roller
Fig. 2-31
2.3.1
Document Transfer (Feed and Eject)
This mechanism consists of the document stacker, automatic document feeder (ADF), document eject roller ASSY and two document sensors (document front sensor, document rear sensor). If documents are set face down on the document stacker to start the scanning operation, the document front sensor detects the document, then the scanner motor rotates so that the ADF (which consists of the separation roller and ADF parts) feeds those documents into the equipment, starting from the bottom sheet to the top, page by page. Each document is advanced by the document feed roller ASSY to the scanner, and it is fed out of the equipment with the document eject roller ASSY. The document rear sensor detects that the document is fed out without any paper jam. 2.3.2 Scanner
The scanner uses a contact image sensor (CIS) unit which consists of an LED array to illuminate the document, a self-focus lens array to collect the reflected light, a CIS to carry out photoelectric conversion to output picture element data and a cover glass on which the document advances. When the document passes between the document pressure bar and the cover glass, it is scanned.
II-22
CHAPTER III
1.
DISASSEMBLY AND REASSEMBLY
SAFETY PRECAUTIONS
To avoid creating secondary problems by mishandling, be careful to follow the following precautions during maintenance work. (1) (2) (3) (4) (5) Always turn off the power switch and unplug the power cord from the power outlet before accessing any parts inside the printer. Be careful not to lose screws, washers or other parts removed. Be sure to apply grease to the gears and applicable positions specified in this chapter. When using soldering irons or other heat-generating tools, take care not to accidentally damage parts such as wires, PCBs and covers. Before handling any PCBs, touch a metal portion of the equipment to discharge any static electricity charge on your body, or the electronic parts or components may be damaged. When transporting PCBs, be sure to wrap them in the correct protective packaging. Be sure to replace self-tapping screws correctly, if removed. Unless otherwise specified, tighten screws to the following torque values. TAPTITE, BIND or CUP B M3x6: 4kgf · cm M3x8: 7kgf · cm M4 : 9kgf · cm TAPTITE, CUP S M3 : 8kgf · cm SCREW M3 : 7kgf · cm M4 : 8kgf · cm (8) When connecting or disconnecting cable connectors, hold the connector body, not the cables. If the connector has a lock, release the connector lock first to release it. After a repair, check not only the repaired portion but also all connectors. Also check that other related portions are functioning properly before operational checks.
(6) (7)
(9)
III-1
BOTTOM A
10 MAIN PCB ASSY
2.
1
DRUM UNIT
2 11 BASE PLATE ASSY
OUTPUT TRAY ASSY
A
12 PANEL SENSOR PCB ASSY 13 LOW-VOLTAGE PS PCB ASSY 14
HIGH-VOLTAGE PS PCB ASSY
DISASSEMBLY FLOW
3
TOP COVER
4 17 DRIVE UNIT
15 SUB FAN MOTOR ASSY
SCANNER CONTROL PANEL ASSY 16 MAIN FAN MOTOR
III-2
18 MAIN MOTOR ASSY 19 SUB MOTOR ASSY 20 21 22 EXTENSION SUPPORT WIRE DOCUMENT EXTENSION SUPPORT WIRE DOCUMENT SUPPORT / PAPER SUPPORT
5
DOCUMENT SCANNER FRAME ASSY
6
SCANNER REAR COVER ASSY / REAR COVER ASSY
7
MP REAR SHEET FEEDER ASSY
8
FIXING UNIT
9
LASER UIT
3.
3.1
DISASSEMBLY PROCEDURE
Drum Unit (1) (2) Open the top cover. Lift out the drum unit.
Drum Unit
Top Cover
Main Cover Fig. 3-1
3.2
Output Tray ASSY (1) (2) Open the output tray toward you. Press the hinges at the left and right sides of the output tray inwards to release the output tray from the main cover.
Output Tray
Output Tray
Main Cover
Fig. 3-2
III-3
3.3
Top Cover (1) (2) Open the top cover. Press the hinges at the left and right sides of the top cover inwards to release the top cover from the main cover.
Note: It is recommended for easy removal to press the side of the top cover ( ) while pulling the side of the main cover ( ).
Top Cover
2
Main Cover
1
Top Cover
Main Cover
Fig. 3-3
III-4
3.4
Scanner Control Panel ASSY (1) (2) (3) (4) Open the scanner control panel ASSY toward you. Pull the hinges at the left and right sides of the document scanner frame ASSY outwards to release the two hooks of the scanner control panel ASSY. Disconnect the sensor harness on the right hand side. Remove the scanner control panel ASSY from the scanner frame.
Scanner Control Panel
Sensor Harness Scanner Frame
Fig. 3-4
Note: When replacing/reassembling the scanner control panel ASSY, remove the old grease and apply a suitable amount of grease to the points on both the scanner control panel and scanner frame as shown ;
Scanner Control Panel
Grease: Molykote EM30L (1 rice-grain size)
Scanner Frame
Fig. 3-5
III-5
PR98242 (5) Remove the M3x6 pan tapping screw securing the front spring plate, washer, separation rubber and ADF spring plate, then remove all of them. Note that the vibration proof rubber is attached to the back of the ADF spring plate. Press one side of the document pressure bar inwards to remove it. The spring will be released and should also be removed. Remove the document rear sensor actuator .
Taptite, pan M3x6 Front Spring Plate Vibration Proof Rubber Washer Separation Rubber ADF Spring Plate Spring Document Pressure Bar
(6) (7)
Document Rear Sensor Actuator
Fig. 3-6
(8) (9) (10)
Remove the six M3x8 tapping screws from the panel rear cover. Release the four hooks to remove the panel rear cover. Remove the document front sensor actuator with the helical torsion spring .
Note: Do not lose the helical torsion spring when disassembling the document front sensor actuator. The spring easily comes off from the actuator. When reassembling the helical torsion spring to the document front sensor actuator, ensure that the direction of the spring is correct. Assemble the document front sensor actuator while lightly pressing it. Then check that the document front sensor works correctly by turning ON/OFF the sensor with the actuator.
III-6
Panel Rear Cover Taptite, cup M3x8 Document Front Sensor Actuator Helical Torsion Spring
Taptite, cup M3x8
Taptite, cup M3x8
Scanner Control Panel
Fig. 3-7a
(11) (12) (13)
Remove the three M3x6 tapping screws to remove the scanner panel PCB, then remove the two M3x6 tapping screws to remove the scanner sensor PCB. Disconnect the scanner panel harness ASSY connected between the scanner panel PCB and the scanner sensor PCB. Remove the four keys from the scanner control panel .
Taptite, cup M3x6
Scanner Panel Harness
Scanner Panel PCB
Taptite, cup M3x6
Scanner Sensor PCB
Scanner Panel PCB
Scanner Panel Keys
Fig. 3-8
III-7
3.5
Document Scanner Frame ASSY (1) (2) (3) (4) Remove the four M3x8 tapping screws. Release the three hooks, then disconnect the R motor harness at the right hand side and the CIS harness at the left hand side. Remove the M3x6 screw to disconnect the motor frame FG harness. Remove the document scanner frame ASSY.
Motor Frame FG Harness
Taptite, cup M3x8
Taptite, cup M3x8
R Motor Harness Scanner Drive Unit
Document Scanner Frame
Screw, pan M3x6
CIS Unit
CIS Harness
Fig. 3-9
III-8
Note: When replacing/reassembling the document scanner frame ASSY, remove the old grease and apply a suitable amount of grease to the point shown below ;
Grease: Molykote EM-30L (1 rice-grain size) Panel open spring Document Scanner Frame
Fig. 3-10
(5)
Remove the document feed roller ASSY and the document eject roller ASSY from the scanner frame. It is recommended for easy removal to release the hook retaining the shaft from the groove of the shaft and slide the shaft towards the gear side. Remove the CIS film and gear shield film from the scanner frame.
(6)
Caution: Once you remove the CIS film and gear shield film, they will become unusable. You must fit new ones. Do not touch or damage the surface of the CIS unit when disassembling the rollers or CIS film.
Document Feed Roller Hook Document Feed Roller Document Eject Roller Hook Gear Shield Film Document Eject Roller CIS Film
Scanner Frame
Pinch roller Align the cutout of the CIS film with this position of the scanner frame.
CIS Film Tabs Fig. 3-11
III-9
(7) (8)
Slightly lift the arm, move the CIS unit to the left, then remove it. Remove the two CIS back-up springs.
CIS Back-up Spring
CIS Unit
CIS Back-up Spring
CIS Back-up Spring
Scanner Frame
Scanner Frame Arm
CIS Unit
Fig. 3-12
Note: When replacing/reassembling the document feed roller ASSY and the document eject roller ASSY , remove the old grease and apply a suitable amount of grease to the points shown below ;
Document Feed Roller
Grease: Molykote EM30L (1 rice-grain size)
Document Eject Roller
Grease: Molykote EM30L (1 rice-grain size)
Fig. 3-13
III-10
(9) (10) (11) (12)
Turn the scanner frame ASSY upside down. Remove the two M3x8 tapping screws. Remove the separation roller from the scanner frame by pressing the hook retaining the plastic shaft between the ADF gear and the separation roller. Remove the scanner drive unit .
Scanner Frame
Scanner Drive Unit
Separation Roller
Taptite, cup M3x8
Scanner Frame
ADF gear Fig. 3-14
III-11
3.6
Scanner Rear Cover ASSY / Rear Cover ASSY (1) (2) (3) Remove the two M4x12 tapping screws. Remove the CIS harness from the two hooks. Remove the scanner rear cover ASSY with the rear cover ASSY.
Taptite, bind M4x12
Scanner Rear Cover
Taptite, bind M4x12
Main Cover
Fig. 3-15
(4)
Press the hinges at the right and left sides outwards to release the scanner rear cover from the rear cover.
Scanner Rear Cover
Rear Cover Fig. 3-16
III-12
Note: When reassembling the scanner rear cover and the rear cover onto the printer, hook the two hooks at the right and left hand sides (rear), then secure the two screws. When replacing/reassembling the rear cover, remove the old grease and apply a suitable amount of grease to the points shown in the figure below;
Grease: Molykote EM30L (1 rice-grain size)
Rear Cover ASSY
Stopper spring
Fig. 3-17
3.7
MP Rear Sheet Feeder ASSY
Caution: When disassembling the MP rear sheet feeder ASSY, if you get grease on your fingers, take care not to touch the separation pad or the paper pick-up roller, the grease will spread to the paper and the drum unit. It might cause black spots to appear on the printed page.
(1) Push the left rib outwards and pull out the MP rear sheet feeder. It is not necessary to release the right rib.
Multi-purpose Rear Sheet Feeder
Rib
Fig. 3-18
III-13
Note: When reassembling the MP rear sheet feeder, remove the old grease and apply a suitable amount of grease (2 rice-grain size) between the heat sink of the motor and the ground leaf spring. (Refer to the figure below.)
Ground leaf spring
Grease: FLOIL GE-676 (or FLOIL GE-334C) Motor heat sink 6.2 mm Fig. 3-19
3.8
Fixing Unit (1) (2) Remove the two M4x16 tapping screw