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DCP- 8110D / 8110DN
DCP- 8112DN / 8150DN / 8152DN
DCP- 8155DN / 8157DN / 8250DN
MFC- 8510DN / 8512DN / 8515DN
MFC- 8520DN / 8710DW / 8712DW
MFC- 8810DW / 8910DW / 8912DW / 8950DW
MFC- 8950DWT / 8952DW / 8952DWT
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.
March 2012
SM-FAX135
8C5F01
(2)
Brother Laser MFC
MODEL:
Confidential

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Chapters

Troubleshooting

   Summary of Contents for Brother DCP-8110DN

  • Page 1: Service Manual

    Brother Laser MFC SERVICE MANUAL MODEL: DCP- 8110D / 8110DN DCP- 8112DN / 8150DN / 8152DN DCP- 8155DN / 8157DN / 8250DN MFC- 8510DN / 8512DN / 8515DN MFC- 8520DN / 8710DW / 8712DW MFC- 8810DW / 8910DW / 8912DW / 8950DW MFC- 8950DWT / 8952DW / 8952DWT Read this manual thoroughly before maintenance work.

  • Page 2: Function Comparative Table

    The function comparative table for models as described in this Service Manual are shown below. Model DCP-8110D DCP-8110DN DCP-8112DN DCP-8150DN 5-line 5-line 5-line 5-line Touch panel Wired/Wireless LAN Wired Wired Wired Scan One-sided One-sided One-sided One-sided Scanning size Legal Paper capacity...

  • Page 3

    500 sheets 500 sheets (Paper tray 1) Speaker © Copyright Brother 2012 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. All other product and company names mentioned in this manual are trademarks or registered trademarks of their respective holders.

  • Page 4

    Each company whose software title is mentioned in this manual has a Software License Agreement specific to its proprietary programs. Any trade names and product names of companies appearing on Brother products, related documents and any other materials are all trademarks or registered trademarks of those respective companies.

  • Page 5: Table Of Contents

    CONTENTS REGULATION ......................viii SAFETY INFORMATION..................xiv CHAPTER 1 SPECIFICATIONS 1. SPECIFICATIONS LIST ....................... 1-1 General ..........................1-1 Network Connectivity ......................1-6 Service Information......................1-7 Supplies ..........................1-8 Paper ..........................1-10 1.5.1 Paper handling ....................1-10 1.5.2 Media specifications .................... 1-11 1.5.3 Type and size of paper..................

  • Page 6: Table Of Contents

    Error Messages ......................... 2-24 Communication Errors ....................... 2-28 4. TROUBLESHOOTING ....................... 2-31 Error Cause and Remedy ....................2-31 Troubleshooting for Paper Feeding Problems ..............2-69 4.2.1 Multiple sheets of paper are fed ................2-69 4.2.2 Paper becomes wrinkled ..................2-69 4.2.3 Paper is fed at an angle ..................

  • Page 7: Table Of Contents, Chapter 3 Disassembly/reassembly

    4.14.1 Machine is not turned ON..................2-97 4.14.2 Main fan does not rotate..................2-97 4.14.3 Main motor failure....................2-97 4.14.4 Unusual noise is generated from the machine ............ 2-97 4.14.5 Malfunction of the memory .................. 2-97 CHAPTER 3 DISASSEMBLY/REASSEMBLY 1. SAFETY PRECAUTIONS......................3-1 2.

  • Page 8: Table Of Contents

    9.10 Panel cover / Printed panel cover..................3-53 9.11 Document scanner unit...................... 3-60 9.11.1 First side CIS unit ....................3-62 9.12 Joint cover ......................... 3-67 9.13 Wireless LAN PCB ASSY ....................3-68 9.14 USB host PCB ASSY......................3-68 9.15 Speaker unit ........................3-69 9.16 NCU PCB ASSY ........................

  • Page 9: Table Of Contents, Chapter 4 Adjusting And Updating Settings

    10.3 T2 side cover L ........................ 3-120 10.4 T2 side cover R........................ 3-121 10.5 T2 front cover ASSY ......................3-122 10.6 T2 relay PCB ASSY......................3-123 10.7 T2 clutch .......................... 3-124 10.8 T2 paper feed sensor PCB ASSY..................3-125 10.9 T2 back cover ........................3-129 10.10LT connector ASSY (T2)....................

  • Page 10

    CHAPTER 5 SERVICE FUNCTIONS 1. MAINTENANCE MODE........................ 5-1 How to Enter Maintenance Mode ..................5-1 1.1.1 Method of entering end-user accessible maintenance mode........ 5-1 1.1.2 Method of entering maintenance mode for service personnel ......5-1 List of Maintenance Mode Functions ................... 5-2 Details of Maintenance Mode Functions................

  • Page 11: Table Of Contents, Chapter 7 Periodical Maintenance

    Reset Developer Roller Counter..................5-49 Display ROM Version ......................5-50 Perform Demo Printing ...................... 5-50 CHAPTER 6 WIRING DIAGRAM 1. WIRING DIAGRAM ........................6-1 CHAPTER 7 PERIODICAL MAINTENANCE 1. SAFETY PRECAUTIONS......................7-1 2. PERIODICAL REPLACEMENT PARTS ..................7-2 Preparation .......................... 7-2 Fuser unit..........................

  • Page 12

    REGULATION Declaration of Conformity (Europe only) (MFC-8510DN / MFC-8520DN / MFC-8950DWT only) We, Brother Industries, Ltd. of 15-1, Naeshiro-cho, Mizuho-ku, Nagoya 467-8561 Japan declare that this product is in compliance with the essential requirements of Directives 1999/5/EC and 2009/125/EC. The Declaration of Conformity (DoC) is available on our Website.

  • Page 13: Disconnect Device

    IEC60825-1:2007 Specification (For 220-240V models only) This product is a Class 1 laser product as defined in IEC60825-1:2007 specifications. The label shown below is attached in countries where required. This product has a Class 3B Laser Diode which emits invisible laser radiation in the Laser Unit.

  • Page 14

    Radio Interference This product complies with EN55022 (CISPR Publication 22)/Class B. Recycling Information in accordance with the WEEE (2002/96/EC) and Battery (2006/66/EC) Directives Product mark Battery mark European Union only The product/battery is marked with one of the above recycling symbols. It indicates that at the end of the life of the product/battery, you should dispose of it separately at an appropriate collection point and not place it in the normal domestic waste stream.

  • Page 15

    This transmitter must not be co-located or operated in conjunction with any other antenna or transmitter. Important • Changes or modifications not expressly approved by Brother Industries, Ltd. could void the user’s authority to operate the equipment. • A shielded interface cable should be used to ensure compliance with the limits for a Class B digital device.

  • Page 16

    FDA regulations and must be attached to laser products marketed in the United States. MANUFACTURED: BROTHER TECHNOLOGY (SHENZHEN) LTD. NO6 Gold Garden Ind., Nanling Nanwan, Longgang, Shenzhen, China This product complies with FDA performance standards for laser products except for deviations pursuant to Laser Notice No.

  • Page 17

    The purpose of the International ENERGY STAR Program is to promote the development and popularization of energy-efficient office equipment. ® As an ENERGY STAR Partner, Brother Industries, Ltd. has determined that this product ® meets the ENERGY STAR specifications for energy efficiency. xiii...

  • Page 18: Safety Information

    SAFETY INFORMATION WARNING WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injuries. CAUTION CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injuries. Important Important indicates a potentially hazardous situation which, if not avoided, may result in damage to property or loss of product functionality.

  • Page 19

    To use the Machine Safely Please keep these instructions for later reference and read them before attempting any maintenance. If you do not follow these safety instructions, there is a possibility of a fire, electrical shock, burn or suffocation. WARNING ELECTRICAL HAZARDS Failure to follow the warnings in this section may create the risk of an electrical shock.

  • Page 20

    Power Cord Safety: • This product is equipped with a 3-wire grounded plug. This plug will only fit into a grounded power outlet. This is a safety feature. DO NOT defeat the purpose of the grounded plug. • Use only the power cord supplied with this product. •...

  • Page 21

    HOT SURFACE After you have just used the product, some internal parts of the product will be extremely hot. Wait at least 10 minutes for the product to cool down before you touch the internal parts of the product. When moving the product, grasp the side handholds firmly from the front of the product.

  • Page 22

    (DCP-8150DN/8155DN/MFC-8710DW/8810DW/8910DW/8950DW(T) ONLY) This product is heavy and weighs more than 39.7 lb. (18.0 kg) including paper. To prevent possible injuries, at least two people should lift the product by holding it from the front and back. When using your telephone equipment, basic safety precautions should always be followed to reduce the risk of fire, electrical shock and injury to people, including the following: 1.

  • Page 23: Additional Information

    Caution for Laser Product (WARNHINWEIS fur Laser drucker) 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. CAUTION: 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.

  • Page 24: Unlawful Use Of Copying Equipment

    Unlawful use of Copying Equipment It is an offence to make reproductions of certain items or documents with the intent to commit fraud. The following is a non-exhaustive list of documents which it may be unlawful to produce copies of. We suggest you check with your legal adviser and/or the relevant legal authorities if in doubt about a particular item or document: * Currency * Bonds or other certificates of indebtedness...

  • Page 25

    • This equipment may not be used on coin service lines provided by the telephone company or connected to party lines. • Brother cannot accept any financial or other responsibilities that may be the result of your use of this information, including direct, special or consequential damages.

  • Page 26

    DCP-8110DN EQUIPMENT ATTACHMENT LIMITATIONS (Canada only) (MFC only) NOTICE: This product meets the applicable Industry Canada technical specifications. Le present materiel est conforme aux specifications techniques applicables d'Industrie Canada. NOTICE: The Ringer Equivalence Number is an indication of the maximum number of devices allowed to be connected to a telephone interface.

  • Page 27: Specifications

    CHAPTER SPECIFICATIONS Confidential...

  • Page 28

    CHAPTER 1 SPECIFICATIONS This chapter lists the specifications of each model. CONTENTS 1. SPECIFICATIONS LIST ....................1-1 1.1 General........................1-1 1.2 Network Connectivity..................... 1-6 1.3 Service Information....................1-7 1.4 Supplies......................... 1-8 1.5 Paper ........................1-10 1.5.1 Paper handling ..................1-10 1.5.2 Media specifications .................

  • Page 29: Specifications List

    1. SPECIFICATIONS LIST General DCP-8110D MFC-8510DN DCP-8150DN DCP-8155DN Model DCP-8110DN DCP-8250DN MFC-8512DN DCP-8152DN DCP-8157DN DCP-8112DN MFC-8515DN Print method Electrophotographic Laser Printer Resolution 1200 x 1200 dpi, HQ1200 (2400 x 600 dpi), 600 x 600 dpi Print speed One-sided Up to 36/38...

  • Page 30

    DCP-8110D MFC-8510DN DCP-8150DN DCP-8155DN Model DCP-8110DN DCP-8250DN MFC-8512DN DCP-8152DN DCP-8157DN DCP-8112DN MFC-8515DN Noise level Sound Printing LpAm = 59 dB(A) pressure Ready LpAm = 37 dB(A) Sound Printing LWAd = LWAd = 6.58 B(A) LWAd = LWAd = power 6.64 B(A) 6.63 B(A)

  • Page 31

    MFC-8710DW MFC-8910DW MFC-8950DW MFC-8950DWT Model MFC-8520DN MFC-8810DW MFC-8712DW MFC-8912DW MFC-8952DW MFC-8952DWT Print method Electrophotographic Laser Printer Resolution 1200 x 1200 dpi, HQ1200 (2400 x 600 dpi) quality, 600 x 600 dpi Print One-sided Up to 36/38 Up to 40/40 Up to 40/42 Up to 40/42 ppm (A4/ Up to 38/40 speed...

  • Page 32

    MFC-8710DW MFC-8910DW MFC-8950DW MFC-8950DWT Model MFC-8520DN MFC-8952DWT MFC-8810DW MFC-8712DW MFC-8912DW MFC-8952DW Noise LpAm = 59 dB(A) Sound Printing pressure level LpAm = 37 dB(A) Ready LWAd = 6.58 B(A) LWAd = LWAd = LWAd = Sound Printing power 6.63 B(A) 6.78 B(A) 6.58 B(A) LWAd =...

  • Page 33: Computer Requirements

    2 GB 2 GB (Gigabit Ethernet) Wireless 802.11b/g/n *1 For WIA, 1200 x 1200 resolution. Brother Scanner Utility enables to enhance up to 19200 x 19200 dpi. *2 Third-party USB ports are not supported. ® ® *3 Nuance Paper port...

  • Page 34: Network Connectivity

    Network Connectivity DCP-8110D MFC-8510DN DCP-8150DN DCP-8155DN Model DCP-8110DN DCP-8250DN MFC-8512DN DCP-8152DN DCP-8157DN DCP-8112DN MFC-8515DN Wired Network node NC-8300h network type * DCP-8110D: N/A Network type 10Base-T/100Base-TX (Ethernet) 10Base-T/ 10Base-T/ * DCP-8110D: N/A 100Base-TX/ 100Base-TX 1000Base-T (Ethernet) (Ethernet) Network APOP, POP before SMTP, SMTP-AUTH, SSL/TLS (IPPS, security HTTPS, SMTP, POP), SNMP v3 802.1x (EAP-MD5, EAP-...

  • Page 35: Service Information

    Service Information Part Approximate Life (pages) Machine life 300,000 pages (A4/Letter size) or 5 years Part life (ADF) Up to 50,000 pages Part life Up to 50,000 pages (Document Scanner Unit) MTBF 4,000 hours MTTR 0.5 hours Maximum monthly volume Up to 50,000 pages Periodical Fuser Unit...

  • Page 36

    DCP-8152DN DCP-8157DN DCP-8112DN MFC-8515DN Toner Starter Approximately 3,000 pages Approximately Approximately Approximately cartridge Toner * DCP-8110DN/8112DN 3,000 pages 8,000 pages 2,000 pages for U.S.A. and Europe: * DCP- * MFC-8510DN Approximately 2,000 8157DN: N/A for Asia& pages China/MFC- 8515DN for...

  • Page 37

    MFC-8710DW MFC-8910DW MFC-8950DW MFC-8950DWT Model MFC-8520DN MFC-8810DW MFC-8712DW MFC-8912DW MFC-8952DW MFC-8952DWT Toner Starter Approximately 3,000 pages Approximately Approximately 3,000 pages Approximately cartridge Toner * MFC-8520DN for 3,000 pages * For Europe: 3,000 pages Europe: Approximately Approximately 8,000 pages * MFC- 2,000 pages MFC-8952DW/8952DWT: 8912DW:...

  • Page 38: Paper Handling

    MFC-8515DN Paper Input Paper tray 1 250 sheets 500 sheets 250 sheets Paper tray 2 500 sheets (Option) * DCP-8110DN/8112DN/MFC-8510DN/8512DN for U.S.A. : N/A MP tray 50 sheets 35 sheets 50 sheets 35 sheets Paper Output Face-down 150 sheets (80 g/m...

  • Page 39: Media Specifications, Type And Size Of Paper

    1.5.2 Media specifications Model All models Paper Paper tray 1 Plain Paper, Thin Paper, Recycled Paper Input Paper tray 2 Plain Paper, Thin Paper, Recycled Paper MP tray Plain Paper, Thin Paper, Thick Paper, Thicker Paper, Recycled Paper, Bond paper, Labels, Envelopes, Env. Thin, Env. Thick Duplex Plain Paper, Thin Paper, Recycled Paper Plain Paper, Recycled Paper...

  • Page 40: Printable & Scannable Area

    Printable & Scannable Area The figure below shows maximum unprintable and unscannable areas. The unprintable and unscannable areas may vary depending on the paper size or settings in the application you are using. Top (1) Left (2) Usage Document Size Bottom (3) Right (4) Letter...

  • Page 41: Fax (only For The Models With Fax Function)

    Yes (Download only) (ITU T.37 simple mode) Specifications are subject to change without notice. Copy DCP-8110D MFC-8510DN DCP-8150DN DCP-8155DN Model DCP-8110DN DCP-8157DN DCP-8250DN MFC-8512DN DCP-8152DN DCP-8112DN MFC-8515DN Copy Speed (A4/Letter) Up to 36/38 Up to 40/40 cpm Up to 40/42...

  • Page 42: Usb Direct Interface

    Specifications are subject to change without notice. 1.11 USB Direct Interface Model All models PictBridge Direct print PDF version1.7, JPEG, Exif+JPEG, PRN (created by own printer driver) TIFF (scanned by Brother model), XPS version 1.0, PostScript 3 Specifications are subject to change without notice. 1-14 Confidential...

  • Page 43: Troubleshooting

    CHAPTER TROUBLESHOOTING Confidential...

  • Page 44

    CHAPTER 2 TROUBLESHOOTING This chapter details error messages and codes which the incorporated self-diagnostic function of the machine will display if any error or malfunction occurs. If any error message appears, refer to this chapter to find which parts should be checked or replaced. The latter half of this chapter provides sample problems which could occur in the main sections of the machine and related troubleshooting procedures.

  • Page 45: Table Of Contents

    4.6.2 Control panel is inoperable............... 2-87 4.7 Troubleshooting for Toner and Drum Problems........... 2-88 4.7.1 New toner is not detected................. 2-88 4.7.2 Cartridge error (toner cartridge cannot be detected)........ 2-88 4.7.3 Drum error ....................2-88 4.8 Troubleshooting for Fuser Unit Problems ............2-89 4.8.1 Fuser unit failure..................

  • Page 46

    1. INTRODUCTION Troubleshooting is a collection of solution procedures that service personnel should follow if an error or malfunction occurs in the machine. It is difficult to determine troubleshooting procedures for all possible problems that may occur in the future. Therefore, this chapter describes typical problem cases and recovery procedures for these.

  • Page 47: Checks Before Commencing Troubleshooting

    Checks before Commencing Troubleshooting Check the following items before commencing repairs on the machine. Operating environment (1) The machine is placed on a flat, stable surface. (2) The machine is used in a clean environment where the temperature is between 10°C (50°F) and 32.5°C (90.5°F) and the relative humidity is maintained between 20% and 80%.

  • Page 48

    Others (1) Condensation When the machine is moved to a warm room from a cold location, condensation may occur inside the machine, causing various problems as listed below. • Condensation on the surface of optical devices such as the laser scanner window, lens, reflecting mirror and protection glass may cause light print image.

  • Page 49: Cross-section Drawing

    2. OVERVIEW Cross-section Drawing 2.1.1 Printer part Heat unit Laser unit Developer roller Registration roller <Back side> <Front side> Eject roller 2 Fuser unit Exposure drum Registration rear actuator Registration front actuator Eject pinch roller MP tray Back cover Front cover Outer chute MP separation roller MP pick-up roller...

  • Page 50: Adf Unit/document Scanner Unit

    2.1.2 ADF unit/Document scanner unit Legal model Document Document detection actuator separate roller Second side document hold Document pick-up roller ADF document support Second side CIS unit ADF cover separate pad ADF cover actuator Document feed Document feed roller ASSY 1 roller ASSY 2 Paper guide ADF document output...

  • Page 51

    A4 model Document Document detection actuator ADF document support separate roller Second side document hold Document pick-up roller ADF separate pad ADF cover Document feed ADF cover actuator roller ASSY 1 Document feed Paper guide roller ASSY 2 ADF document output support flap Document cover Document ejection roller ADF cover/document detection sensor PCB...

  • Page 52: Paper Feeding

    Paper Feeding 2.2.1 Printer part <Back side> <Front side> Manual feed slot path Duplex path Paper tray 1 path Paper tray 2 path Fig. 2-4 Confidential...

  • Page 53

    2.2.2 Scanning Legal model Document feed path Fig. 2-5 A4 model Document feed path Fig. 2-6 Confidential...

  • Page 54: Operation Of Each Part

    Operation of Each Part Part name Operation T1 pick-up roller Picks up the paper from paper tray 1. T1 separation roller / Separates the paper fed from paper tray 1 into single sheets. T1 separation pad T1 paper feed actuator Detects paper tray 1.

  • Page 55

    Part name Operation Toner sensor Detects the toner remaining in the cartridge. When the toner is below the specified level, the user is notified that the toner cartridge needs replacing soon. New toner sensor Detects the toner volume when a new toner cartridge is set. (Does not react to the starter toner cartridge even if it is new.) When a new toner cartridge is detected, the developer roller counter and the developing bias voltage value are reset, and...

  • Page 56: Block Diagram

    Block Diagram Panel Touch panel (Color LCD model) ASSY Panel PCB Color LCD (Wireless LAN model only) Panel (5 line model) Back-light PCB Wireless LAN Panel PCB Fuser unit MP-PE sensor PCB Center thermistor Eject sensor T1 paper HVPS PCB feed sensor Side thermistor Regist front/...

  • Page 57: Main Components

    Main Components Document scanner unit ADF unit Speaker unit Control panel ASSY Wireless LAN PCB ASSY Back cover Air duct Joint cover Laser unit Side cover R ASSY USB host PCB ASSY Outer chute Main fan Fuser cover Low-voltage power supply PCB ASSY Fuser unit MP paper...

  • Page 58: Life Of Toner Cartridge And Drum Unit

    Life of Toner Cartridge and Drum Unit Life of toner cartridge <Method of detecting toner volume> Toner volume is monitored by the toner sensor and by the number of rotations of the developer roller. When the toner sensor detects that the toner has run out or when the number of rotations of the developer roller reaches the limit, "Replace Toner"...

  • Page 59

    To avoid problems caused by abrasion of the developer roller surface or deterioration of the toner sealing, the machine prohibits printing when the number of rotations of the developer roller reaches the limit, displaying a message prompting the user to replace the toner cartridge before the toner runs out.

  • Page 60

    <Relationship between average number of pages printed per job and life of toner cartridges> (40/42PPM model) Average pages printed (page/job) Cartridge life (Starter) 2710 3636 4104 4386 4575 4710 4812 4891 Cartridge life (Standard) 3484 4675 5277 5640 5882 6056 6187 6288 Cartridge life (High) 6581 8831 9967 10653 11111 11439 11686 11878 Cartridge life (Super high)

  • Page 61

    Life of drum unit <How to read the life of drum unit> • The band graph indicates 100% initially, and then gradually decreases. • When the band graph indicates 10%, the machine displays a message prompting the user to replace the drum. <How to determine the end of life of drum unit>...

  • Page 62

    The number of drum rotations required for fuser unit warm-up operation (max.): 34.2. Example: When fuser unit warm-up operation (max.) is performed before printing Continuous pages printed Page count based on number of drum rotations (pages) 1 page [34.2 + 12.2 + {3.8 x (1 - 1)}] / 15 = 3.1 2 pages [34.2 + 12.2 + {3.8 x (2 - 1)}] / 15 = 3.3 18 pages...

  • Page 63: Error Indications, Error Codes

    3. ERROR INDICATIONS This machine includes a self-diagnosis function. If the machine does not work normally it judges that an error has occurred, and indicates the corresponding error message on the LCD, which in turn helps the service men to quickly find out the problem. Error Codes The errors with a mesh background in the table below do not occur in the normal operation.

  • Page 64

    Error Refer Error Refer Problem Problem codes codes 4500 An unidentified error occurred. 2-35 5B00 An unidentified error occurred. 2-38 4600 An unidentified error occurred. 2-35 5C00 An unidentified error occurred. 2-38 4700 An unidentified error occurred. 2-35 5D00 An unidentified error occurred. 2-38 4800 An unidentified error occurred.

  • Page 65

    Error Refer Error Refer Problem Problem codes codes Detected an error in the Detected discharge when the 7100 synchronized signal of the 2-41 8300 number of rotations of the drum 2-44 polygon motor for the laser unit. has exceeded twice the life limit. The eject sensor remains ON Cannot detect the signal from (paper pass detected) for more...

  • Page 66

    Error Refer Error Refer Problem Problem codes codes Image processing cannot be completed When printing from the MP tray, correctly because the number of pixels the size of paper set in the MP 9000 2-48 A000 required for image processing is 2-53 tray does not match the size insufficient in the scanned data for the...

  • Page 67

    Error Refer Error Refer Problem Problem codes codes Detected that the first side CIS The memory size allotted for B000 flat cable or second side CIS flat 2-58 C800 Secure Print was exceeded 2-61 cable was not inserted correctly. when saving Secure Print data. A USB device not within the specifications is connected to B100 An unidentified error occurred.

  • Page 68

    Error Refer Error Refer Problem Problem codes codes E100 Program error 2-64 F100 An unidentified error occurred. 2-68 When the center thermistor of the fuser unit is higher than the idle E200 temperature, the side thermistor 2-65 F200 An unidentified error occurred. 2-68 detected a temperature higher than the specified temperature.

  • Page 69: Error Messages

    Error Messages The error messages displayed on the LCD of the machine and their description are shown in the table below. Error Refer Error Message Description codes The device was removed during data Access Error processing. The new toner sensor could not detect the new Cartridge Error C000 2-60...

  • Page 70

    Error Refer Error Message Description codes The registration front sensor does not detect Jam MP Tray paper pass within the specified time after the 8C00 2-47 paper was picked up from the MP tray. The eject sensor remains ON (paper pass detected) for more than the specified time Jam Rear 8400...

  • Page 71

    Error Refer Error Message Description codes Printable pages set for paper feeding kit 1 have Replace Parts PF Kit 1 5200 2-36 reached the limit. (Printing does not stop.) Printable pages set for paper feeding kit 2 have Replace Parts PF Kit 2 5300 2-36 reached the limit.

  • Page 72

    Error Refer Error Message Description codes A USB device not within the specifications is Unusable Device connected to the USB terminal, resulting in CA00 2-62 overcurrent. While printing with the tray designation set to AUTO, the tray automatically changes when Wrong Paper Size paper in the current tray has run out.

  • Page 73: Communication Errors

    Communication Errors Refer Code 1 Code 2 Cause No document set when calling. 2-96 Wrong fax number called. 2-96 No dial tone detected before dialing. 2-96 Busy tone detected before dialing. 2-96 2nd dial tone not detected. 2-96 No loop current detected. 2-96 Busy tone detected after dialing or called.

  • Page 74

    Refer Code 1 Code 2 Cause Corresponding command not received although the FIF 2-96 command sending bit is ON. EOR command received. 2-96 Line disconnected without receiving DCN after receiving the last page. 2-96 (After receiving EOP and sending CFR, received BYE before receiving DCN.

  • Page 75

    Refer Code 1 Code 2 Cause Select receiving ID not correct 2-96 DCN received 2-96 Fallback impossible. 2-96 Unable to detect video signals or commands within 6 2-96 seconds after CFR is transmitted. Received PPS containing invalid page count or block 2-96 count.

  • Page 76: Error Cause And Remedy

    4. TROUBLESHOOTING LCD displays shown below are described based on the 5-line model. Only the first line is applicable to color LCD models. Error Cause and Remedy Error code 0B00 There was no response from the panel for the specified time for any reason. Step Cause Remedy...

  • Page 77

    Error code 0E00 Communication between the panel PCB and the main PCB cannot be established at machine startup. Step Cause Remedy Connection failure of the panel Reconnect the panel PCB harness. PCB harness Panel PCB failure Replace the panel PCB ASSY. Touch panel PCB failure Replace the touch panel PCB ASSY.

  • Page 78

    Error code 1E00 Replace Parts Drum The number of rotations of the drum unit is reaching the life limit. Step Cause Remedy Replace the drum unit with a Replace the main PCB ASSY. new one and reset the drum counter. If the error display is not cleared, the main PCB is faulty.

  • Page 79

    Error code 3600 Print Unable 36 Turn the power off and then back on again. An error occurred in the high-voltage power supply PCB. Step Cause Remedy High-voltage power supply PCB Replace the high-voltage power supply PCB failure ASSY. Main PCB failure Replace the main PCB ASSY.

  • Page 80

    Error code 4400 No Toner Open the Front Cover, then install the Toner Cartridge. The toner sensor detected that the toner cartridge was not set. <User Check> • Set the toner cartridge. Step Cause Remedy Toner sensor PCB failure Refer to "1.3.10 Check sensor operation (function code: 32)"...

  • Page 81

    Error code 5100 Replace Parts PF KitMP Printable pages set for the MP paper feeding kit have reached the limit. (Printing does not stop.) Error code 5200 Replace Parts PF Kit1 Printable pages set for paper feeding kit 1 have reached the limit. (Printing does not stop.) Error code 5300 Replace Parts PF Kit2...

  • Page 82

    Error code 5600 Cover is Open Close the Fuser Cover which can be found behind the Back Cover of the machine. The eject sensor detected that the fuser cover was open. <User Check> • Close the fuser cover. Step Cause Remedy Eject actuator attachment Reattach the eject actuator.

  • Page 83

    Error code 5800 Fuser Error Turn the power off, then on again. Leave the machine for 15 min. Any of error codes 6A00 to 6F00, 7600, 7800, DD00, DE00, or E200 (fuser unit error) occurred when the power switch was turned ON or sleep mode was released. Error code 5900 Self-Diagnostic Will Automatically Restart within 15 minutes.

  • Page 84

    Error code 6300 Replace Toner Open the Front Cover, replace Toner Cartridge. The toner sensor detected no toner remaining or the number of rotations of the developer roller has reached the upper limit. <User Check> • Replace the toner cartridge. Step Cause Remedy...

  • Page 85

    Error code 6A00 Fuser Error / Print Unable 6A Turn the power off and then back on again. The center thermistor of the fuser unit has not reached the specified temperature within the specified time. Error code 6B00 Fuser Error / Print Unable 6B Turn the power off and then back on again.

  • Page 86

    Error code 7000 This error does not usually occur during normal use. The possible causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. Step Cause Remedy Main PCB failure Replace the main PCB ASSY.

  • Page 87

    Error code 7600 Fuser Error / Print Unable 76 Turn the power off and then back on again. The center thermistor of the fuser unit detected a temperature rise greater than the specified value within the specified time. Error code 7800 Fuser Error / Print Unable 78 Turn the power off and then back on again.

  • Page 88

    Error codes 7B00 and 7C00 These errors do not usually occur during normal use. The possible causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. Step Cause Remedy Main PCB failure Replace the main PCB ASSY.

  • Page 89

    Error codes 8100 and 8200 These errors do not usually occur during normal use. The possible causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. Step Cause Remedy Main PCB failure Replace the main PCB ASSY.

  • Page 90

    Error code 8500 No Tray The paper tray cannot be detected, re-install #T1. The T1 paper feed sensor detected that paper tray 1 was not set. <User Check> • Set paper tray 1 correctly. Step Cause Remedy T1 paper feed actuator caught Reattach the T1 paper feed actuator.

  • Page 91

    Error code 8900 Size Error DX Specify the correct paper. The registration front sensor detected that the paper fed was smaller than or larger than the specified size in duplex printing mode. <User Check> • Use A4 or Letter-size paper. Step Cause Remedy...

  • Page 92

    Error code 8C00 Jam MP Tray Remove the jammed paper from Multi Purpose Tray and press Start. The registration front sensor does not detect paper pass within the specified time after the paper was picked up from the MP tray. <User Check>...

  • Page 93

    Error code 8F01 Size mismatch Reload correct paper in #T. When copying from the MP tray, the size of paper set in the MP tray does not match the size specified by the driver. Error code 8F02 Size mismatch Reload correct paper in #T. When copying from the Paper tray 1, the size of paper set in the Paper tray 1 does not match the size specified by the driver.

  • Page 94

    Error code 9300 No Paper Load #S paper in MP Tray. When printing from the MP tray, the MP paper empty sensor detected that there was no paper set in the MP tray. <User Check> • Set the paper in the MP tray. Step Cause Remedy...

  • Page 95

    Error code 9500 No Paper Load #S paper in #T2. When printing from paper tray 2, the T2 paper feed sensor detected that there was no paper set in paper tray 2. <User Check> • Set the paper in paper tray 2. Step Cause Remedy...

  • Page 96

    Error code 9700 Size Error Specify the correct paper size for Tray 1. When printing from paper tray 1, a paper size not supported for paper tray 1 was specified from the driver. <User Check> • Set the Printer Driver's paper setting to a paper size supported for paper tray 1. Step Cause Remedy...

  • Page 97

    Error code 9A00 Manual Feed Load paper There is no paper set in the MP tray while feeding from the Manual is fixed. Step Cause Remedy MP paper empty actuator 1 or 2 Reattach the MP paper empty actuator 1 or 2. caught in some sections of the machine Failure of MP paper empty...

  • Page 98

    Error code A000 Scan Unable Remove the original document. Turn the power off, then on again. Image processing cannot be completed correctly because the number of pixels required for image processing is insufficient in the scanned data for the second side of the document. Step Cause Remedy...

  • Page 99

    Error code A200 Document Jam Clear the scanner jam, then press the Stop Key. The first side document scanning position sensor detected that the document length was 90 cm or more while scanning the document. <User Check> • Set the document length within the standard. Step Cause Remedy...

  • Page 100

    Error code A400 Cover is Open Close the ADF Cover. The ADF cover sensor detected that the ADF cover was open. <User Check> • Close the ADF cover. Step Cause Remedy Connection failure of the ADF Reconnect the ADF sensor PCB harness. sensor PCB harness Tab to push the ADF cover Replace the ADF cover.

  • Page 101

    Error code A700 Print Unable A7 Turn the power off and then back on again. Color parameter in the ROM does not match the first side CIS. Step Cause Remedy First side CIS unit or second Replace the first side CIS unit or second side side CIS unit failure CIS unit.

  • Page 102

    Error code AC00 Scan Unable Remove the original document. Turn the power off, then on again. When scanning the fax, white or black correction data for the second side CIS was not within the correct range. <User Check> • Clean the second side document hold. Step Cause Remedy...

  • Page 103

    Error code B000 SCANNER ERROR FB / SCANNER ERROR ADF Detected that the first side CIS flat cable or second side CIS flat cable was not inserted correctly. Step Cause Remedy Connection failure of the first Reconnect the first side CIS flat cable or side CIS flat cable or second second side CIS flat cable.

  • Page 104

    Error code BA00 This error does not usually occur during normal use. The possible causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. Step Cause Remedy Main PCB failure Replace the main PCB ASSY.

  • Page 105: Cartridge Error

    Error code BE00 This error does not usually occur during normal use. The possible causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. Step Cause Remedy Main PCB failure Replace the main PCB ASSY.

  • Page 106

    Error codes C100 to C600 These errors do not usually occur during normal use. The possible causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. Step Cause Remedy Main PCB failure Replace the main PCB ASSY.

  • Page 107

    Error code CA00 Unusable Device Remove the Device. Turn the power off and back on again. A USB device not within the specifications is connected to the USB terminal, resulting in overcurrent. <User Check> • Remove the USB device that is not within the specifications. Step Cause Remedy...

  • Page 108

    Error code DD00 Print Unable DD Turn the power off and then back on again. Fuser unit error (except error codes 6A00 to 6F00, 7600, 7800, DE00, and E200) <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset.

  • Page 109

    Error code DF00 This error does not usually occur during normal use. The possible causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. Step Cause Remedy Main PCB failure Replace the main PCB ASSY.

  • Page 110

    Error code E200 Print Unable E2 Turn the power off and then back on again. When the center thermistor of the fuser unit is higher than the idle temperature, the side thermistor detected a temperature higher than the specified temperature. <User Check>...

  • Page 111

    Error codes E700 to EB00 These errors do not usually occur during normal use. The possible causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. Step Cause Remedy Main PCB failure Replace the main PCB ASSY.

  • Page 112

    Error code EE00 Print Unable EE Turn the power off and then back on again. Detected communication failure after communication between the wireless LAN PCB and the main PCB was established. Step Cause Remedy Wireless LAN PCB failure Replace the wireless LAN PCB. Main PCB failure Replace the main PCB ASSY.

  • Page 113

    Error codes F100 to F800 These errors do not usually occur during normal use. The possible causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. An unidentified error occurred. Step Cause Remedy Main PCB failure Replace the main PCB ASSY.

  • Page 114: Troubleshooting For Paper Feeding Problems, Paper Becomes Wrinkled, Multiple Sheets Of Paper Are Fed

    Troubleshooting for Paper Feeding Problems End users can solve problems related to paper feeding as long as they follow the User Check items. If the problem still cannot be solved, implement each procedure according to the step number in the tables below. 4.2.1 Multiple sheets of paper are fed <User Check>...

  • Page 115: Paper Is Curled, Only Single Surface Is Printed In Duplex Printing Mode

    4.2.4 Paper is curled <User Check> - Select "Reduce Paper Curl" in the driver. - Check that the thickness of the paper is 60 to 105 g/m . (60 to 163 g/m for MP tray) 4.2.5 Only single surface is printed in duplex printing mode <User Check>...

  • Page 116: Image Defect Examples

    Troubleshooting for Image Defects 4.3.1 Image defect examples Light Faulty registration Dark Poor fixing Completely blank Dirt on the back of paper Vertical streaks Image distortion All black Black vertical streaks Black horizontal Vertical streaks White horizontal Faint print streaks in a light background stripes Downward fogging...

  • Page 117: Troubleshooting According To Image Defect

    4.3.2 Troubleshooting according to image defect End users can solve problems related to image defects as long as they follow the User Check items. If the problem still cannot be solved, implement each procedure according to the step number in the tables below. Light <User Check>...

  • Page 118

    Electrodes location of the toner cartridge and drum unit Fig. 2-10 Electrodes location of the machine Fig. 2-11 2-73 Confidential...

  • Page 119: Faulty Registration

    Faulty registration <User Check> - Check that the appropriate paper type is selected in the driver. Step Cause Remedy Adjusted value of the laser unit is Refer to "2.1 Entering Adjusted Value of incorrect. Laser Unit" in Chapter 4, and enter the adjusted value of the laser unit again.

  • Page 120: Poor Fixing

    Poor fixing <User Check> - Check the usage environment of the machine. Using the machine in high temperature and humidity or low temperature and humidity conditions can cause this problem. - Select "Improve Toner Fixing" in the driver. - Clean the corona wire. - Replace the drum unit with a new one.

  • Page 121: Image Distortion

    Image distortion Step Cause Remedy Laser unit attachment failure Attach the laser unit correctly, and firmly tighten the screws. Harness connection failure Check the connection of all harnesses. If faulty, reconnect them. Dirt on high-voltage electrodes and Clean the high-voltage electrodes and electrodes of the machine electrodes of the machine.

  • Page 122: Vertical Streaks

    Dirt on the back of paper <User Check> - This problem may disappear after printing multiple sheets of paper. - Replace the toner cartridge with a new one. Step Cause Remedy Dirt on paper feed system Wipe off the dirt. Dirt on the fuser unit Replace the fuser unit.

  • Page 123

    CAUTION: • If the machine prints the same pattern continuously, especially a pattern including vertical streaks, black vertical streaks may appear on the paper because the electrostatic performance of the exposure drum has lowered temporarily. Black vertical streaks in a light background <User Check>...

  • Page 124

    White horizontal streaks <User Check> - This problem may disappear after printing multiple sheets of paper. When the machine has not been used for long periods, try printing several sheets of paper. - Replace the drum unit with a new one. - Replace the toner cartridge with a new one.

  • Page 125

    Black horizontal stripes <User Check> - Clean inside the machine and the corona wire of the drum unit. - The tray earth spring on the machine side may be dirty. Clean it with a dry cloth. - This problem may disappear after printing multiple sheets of paper. - When the horizontal stripes appear at intervals of 45.3 mm, replace the toner cartridge with a new one.

  • Page 126: Faint Print

    Faint print <User Check> - Check that the machine is installed on a level surface. - Replace the toner cartridge with a new one. - Replace the drum unit with a new one. Step Cause Remedy Relay front PCB failure Replace the relay front PCB ASSY.

  • Page 127: White Spots

    White spots <User Check> - Turn ON the power switch, and open the front cover and the back cover. Leave the machine for a while to remove condensation. - Select "Improve Toner Fixing" in the driver. - When the white spots appear at intervals of 45.3 mm, replace the toner cartridge with a new one.

  • Page 128: Black Spots

    Black spots <User Check> - When the black spots appear at intervals of 45.3 mm, replace the toner cartridge with a new one. - Refer to the User's Guide to remove the dirt from the exposure drum using a cotton applicator. - When the black spots appear at intervals of 94.2 mm, replace the drum unit with a new one.

  • Page 129

    Ghost <User Check> - Check the usage environment of the machine. Using the machine in high temperature and humidity or low temperature and humidity conditions can cause this problem. - Check that the appropriate paper type is selected in the driver. - Select "Reduce Ghosting"...

  • Page 130: Troubleshooting For Software Problems, Cannot Print Data

    (3) Select "USB" at the bottom of "Hardware" in the "Content" on the left side of the screen. (4) Select "MFC-XXXX" or "DCP-XXXX" in the "USB Device Tree". (5) Check the "Product ID" under "MFC-XXXX"or "DCP-XXXX". Product ID (hexadecimal) • DCP-8110D: 02Ach • DCP-8110DN: 0291h • DCP-8112DN: 02B5h • DCP-8150DN: 0292h • DCP-8152DN: 02B6h • DCP-8155DN: 0293h •...

  • Page 131: Troubleshooting For Network Problems, Cannot Print Via Network Connection

    Troubleshooting for Network Problems 4.5.1 Cannot print via network connection <User Check> - Check the relevant section in the Network Setting Guide. - Check the network connection. - Reset the network. (Refer to the User's Guide.) Step Cause Remedy Connection failure of the wireless Reconnect the wireless LAN PCB harness.

  • Page 132: Troubleshooting For Control Panel Problems, Nothing Is Displayed On The Lcd, Control Panel Is Inoperable

    Troubleshooting for Control Panel Problems 4.6.1 Nothing is displayed on the LCD Step Cause Remedy AC cord failure Replace the AC cord. Connection failure of the panel Check the connection of the panel harness, harness and reconnect it if necessary. Connection failure of the backlight Check the connection of the backlight harness...

  • Page 133: Troubleshooting For Toner And Drum Problems, Cartridge Error (toner Cartridge Cannot Be Detected), Drum Error

    Troubleshooting for Toner and Drum Problems 4.7.1 New toner is not detected <User Check> - Be sure to set a new toner cartridge. Step Cause Remedy New toner actuator caught in some Reattach the new toner actuator. sections of the machine Connection failure of the relay front Reconnect the relay front PCB harness.

  • Page 134: Troubleshooting For Fuser Unit Problems, Fuser Unit Failure

    Troubleshooting for Fuser Unit Problems 4.8.1 Fuser unit failure Step Cause Remedy Harness connection failure Check the harness connection between the between fuser unit and eject sensor fuser unit and the eject sensor PCB, and reconnect it if necessary. Harness connection failure Check the harness connection between the between fuser unit and low-voltage fuser unit and the low-voltage power supply...

  • Page 135: Troubleshooting For Laser Unit Problems, Laser Unit Failure

    Troubleshooting for Laser Unit Problems 4.9.1 Laser unit failure <User Check> - Turn ON the power switch, and open the front cover and the back cover. Leave the machine for a while to remove condensation. Step Cause Remedy Earth plate contact failure Check the contact of the laser unit earth plate, and retighten the screws.

  • Page 136: Troubleshooting For Pcb Problems

    4.10 Troubleshooting for PCB Problems 4.10.1 Main PCB failure <User Check> - Turn the power switch OFF and then ON again. - Install the latest firmware. Step Cause Remedy Main PCB failure Replace the main PCB ASSY. 4.10.2 High-voltage power supply PCB failure Step Cause Remedy...

  • Page 137: Troubleshooting For Document Feeding Problems, Document Becomes Wrinkled

    4.11 Troubleshooting for Document Feeding Problems 4.11.1 Multiple sheets of document are fed <User Check> - Check that paper used for the document is not thinner than the standard. Step Cause Remedy Abrasion of the ADF separation Replace the ADF separation pad. pad.

  • Page 138: Defect Examples

    4.12 Troubleshooting for Image Defects 4.12.1 Defect examples Faulty registration Light Dark or bluish white Vertical streaks Completely blank Vertical streaks Fig. 2-15 4.12.2 Troubleshooting according to image defect Light <User Check> - Check that the contrast setting is not too light. - Clean the document glass or the ADF glass.

  • Page 139

    Faulty registration (1) ADF Step Cause Remedy First side document scanning Reattach the first side document scanning position actuator caught in some position actuator. sections of the machine Second side document scanning Reattach the second side document position actuator caught in some scanning position actuator.

  • Page 140

    Completely blank <User Check> - Check that the document is not reversed. - Check that the document is set in the ADF correctly. Step Cause Remedy Incorrect white level correction data Execute function code 55. First side CIS unit or second side Replace the first side CIS unit or second CIS unit failure side CIS unit.

  • Page 141: Troubleshooting For Fax Problems, Fax Cannot Be Sent, Fax Cannot Be Received

    4.13 Troubleshooting for Fax Problems 4.13.1 Fax cannot be sent <User Check> - Check that the line cord is inserted into the socket correctly. - Check that the dial function setting (tone/pulse) is correct. Step Cause Remedy Connection failure of the NCU PCB Check the connection of the NCU PCB harness harness, and reconnect it if necessary.

  • Page 142: Troubleshooting For Other Problems

    4.14 Troubleshooting for Other Problems 4.14.1 Machine is not turned ON <User Check> - Connect the AC cord correctly. Step Cause Remedy Connection failure of the panel PCB Check the connection of the panel PCB harness harness, and reconnect it if necessary. Panel PCB failure Replace the panel PCB ASSY.

  • Page 143

    CHAPTER DISASSEMBLY/REASSEMBLY Confidential...

  • Page 144: Table Of Contents

    CHAPTER 3 DISASSEMBLY/REASSEMBLY This chapter describes procedures for disassembling and reassembling the machine with relates notes. The provided disassembly order flow enables you to take in the disassembly procedure of related part at a glance. At the start of disassembling, you can check the disassembly order flow which guides you through a shortcut to get to the part.

  • Page 145: Table Of Contents

    9.9.11 ADF cover/document detection sensor PCB ASSY / First side document scanning position sensor PCB ASSY / Second side document scanning position sensor PCB ASSY (duplex scanning models only)..............3-45 9.9.12 Drive frame ASSY / Document feed roller ASSY 1 ........3-47 9.9.13 ADF motor ASSY ..................

  • Page 146: Table Of Contents

    9.44 MP paper empty sensor PCB ASSY / MP paper empty actuator 1 / MP paper empty actuator 2..................3-111 9.45 Registration front/rear sensor PCB ASSY / Registration front actuator / Registration rear actuator / Registration actuator spring .........3-114 10. DISASSEMBLY PROCEDURE (LT UNIT) ..............3-117 10.1 Paper tray 2 ......................3-117 10.2 T2 roller holder ASSY ....................3-119 10.3 T2 side cover L .......................

  • Page 147: Safety Precautions

    1. SAFETY PRECAUTIONS To avoid creating secondary problems by mishandling, follow the warnings and precautions below during maintenance work. WARNING Some parts inside the machine are extremely hot immediately after the machine is used. When opening the front cover ASSY or back cover to access any parts inside the machine, never touch the shaded parts shown in the following figures.

  • Page 148

    2. PACKING Styrofoam pad R Paper tray pad ASSY (SP) Quick setup guide Option carton AC cord bag ASSY Pad ASSY Pad ASSY Styrofoam pad F Machine Carton pad 1 Carton Protective material ASSY LT-5400 Pad ASSY Carton pad 2 Carton spacer Carton Carton...

  • Page 149: Screw Catalogue

    3. SCREW CATALOGUE Taptite bind B Taptite pan Taptite bind B Taptite pan B M3x10 M3x8 Taptite pan B Taptite bind B M4x14 M4x12 Taptite cup S Taptite cup B Taptite cup S Taptite cup B M3x6 SR M3x8 Taptite cup S Taptite cup B M3x8 SR M3x10...

  • Page 150: Screw Torque List

    4. SCREW TORQUE LIST Note: • For verifying the shape of each screw, refer to "3.SCREW CATALOGUE" in this chapter. Tightening torque Location of screw Screw type Q'ty N.m (kgf.cm) T1 tray cover Taptite bind B M4x12 0.8±0.1(8±1) Side cover L Taptite bind B M4x12 0.8±0.1(8±1) Side cover R ASSY...

  • Page 151

    Tightening torque Location of screw Screw type Q'ty N.m (kgf.cm) Taptite cup S M3x8 SR 0.7±0.1(7±1) Earth plate Taptite bind B M4x12 0.8±0.1(8±1) (Non touch panel only) Joint cover Taptite bind B M4x12 0.8±0.1(8±1) USB host PCB ASSY Taptite bind B M4x12 0.8±0.1(8±1) NCU unit Taptite bind B M4x12...

  • Page 152

    Tightening torque Location of screw Screw type Q'ty N.m (kgf.cm) Main motor ASSY Taptite cup S M3x8 SR 0.8±0.1(8±1) Main motor cover Taptite bind B M3x10 0.5±0.1(5±1) MP solenoid Taptite bind B M3x10 0.5±0.1(5±1) Main PCB shield calking ASSY Taptite bind B M4x12 0.8±0.1(8±1) Duplex solenoid Taptite bind B M3x10...

  • Page 153

    5. LUBRICATION Lubricating oil type Quantity of Lubrication point (Maker name) lubrication Fuser drive gear 39 10 places Develop one way clutch 53 5 places FLOIL BG-10KS (Kanto Kasei) 1.5 mm dia. ball Develop clutch 51R 1 places Develop joint gear 37 4 places Legal model 16 places...

  • Page 154

    Develop joint gear 37 Fig. 3-4 Document scanner unit <A4 model> Fig. 3-5 <Legal model> Fig. 3-6 Confidential...

  • Page 155

    Hinge ASSY L Fig. 3-7 Hinge R (Legal model only) Fig. 3-8 Confidential...

  • Page 156: Overview Of Gears

    6. OVERVIEW OF GEARS <Layout view> 11 11 11 Fig. 3-9 <Development view> 9 9 9 3 3 3 6 6 6 5 5 5 8 8 8 2 2 2 7 7 7 1 1 1 4 4 4 Fig.

  • Page 157

    <Layout view> Fig. 3-11 <Development view> Fig. 3-12 Note: • When handling gears, make sure that frame L faces up. Otherwise all gears come off. <Name of gears> LY4448 Fuser gear 22/33 LY4436 Eject idle gear 19 LY4438 Eject sector gear 33 LY4435 Eject idle gear 20 LY4444...

  • Page 158: Harness Routing

    7. HARNESS ROUTING Main PCB ASSY Document scanner motor harness (YW) Document scanner ADF motor harness (RD) earth harness (YW) Duplex solenoid Second side document scanning harness (WH) Internal temperature position sensor harness (BL) thermistor harness (GR) Speaker harness ADF cover/document Guide (RD, BK) detection sensor harness (WH)

  • Page 159

    Relay front PCB ASSY Hooks Relay front PCB ASSY Front cover sensor Front cover sensor harness (RD, WH) Hooks Hooks Registration clutch harness (BK) MP solenoid harness (WH) Registration clutch MP solenoid T1 clutch harness (BK) Drive sub ASSY T1 clutch Hooks Hooks Hooks...

  • Page 160

    Fuser unit Fuser unit Fuser unit Hook Hook Hook Low-voltage- Hook heater harness Center thermistor harness Heater harness (WH) (GR x 2) Side thermistor harness (WH x 2) High-voltage power supply PCB ASSY T1 paper feed sensor harness (RD, BL, WH) MP paper empty High-voltage power sensor PCB ASSY...

  • Page 161

    Toner LED PCB ASSY/Main fan Toner LED harness (RD, BL, WH) Hook Hooks Hook Toner LED PCB ASSY Main fan harness (RD, WH) Main fan Laser unit Laser unit flat cable Core Laser unit Hooks Toner LED harness (RD, BL, WH) Harness colors may be changed for any reason.

  • Page 162

    Low-voltage power supply PCB ASSY Earth harness Low-voltage-heater harness Low-voltage power supply PCB ASSY Inlet Power switch Note: • Attach the Earth harness outermost over the heater harness. Hook Tape Tape Hook Hooks Tape Hole Tape Low-voltage power supply harness (WH) Harness colors may be changed for any reason.

  • Page 163

    NCU PCB ASSY / Speaker unit Speaker harness (RD, BK) Speaker unit Hooks Hooks NCU PCB ASSY Hook NCU harness (WH) Main PCB ASSY Hook Hook Guide NCU earth harness (BR) Guides Guide grooves Guide grooves Harness colors may be changed for any reason. 3-17 Confidential...

  • Page 164

    Wireless LAN PCB ASSY / USB host PCB ASSY Wireless LAN Guide harness (Shield) Wireless LAN PCB ASSY Guide grooves USB host harness (Shield) USB host PCB ASSY Main PCB ASSY Guide Panel PCB ASSY Touch panel PCB harness (BL) Panel PCB ASSY Guides Panel PCB...

  • Page 165

    Main frame R Guides NCU earth harness (BR) Harness colors may be changed for any reason. 3-19 Confidential...

  • Page 166: Disassembly Flow Chart

    8. DISASSEMBLY FLOW CHART Disassembly / Re-Assembly (second) 9.9.3 ADF document 9.42 MP roller holder 9.1 Duplex tray 9.2 Paper tray 1 9.8 Side cover R ASSY 9.5 MP cover ASSY output support flap ASSY / MP separation 20/20 pad ASSY / MP 5/10 separation pad spring 20/40...

  • Page 167

    Disassembly / Re-Assembly (second) 9.3 Back cover 5/10 9.20 Scanner earth 9.3 Outer chute 9.25 Registration clutch 9.25 T1 clutch plate 15/30 15/30 10/10 9.26 Registration roller 9.20 LV shield plate 9.4 Fuser cover 9.26 Under bar bushing cover 10/10 10/10 15/15 9.20 LVPS insulation...

  • Page 168: Disassembly Procedure

    9. DISASSEMBLY PROCEDURE Preparation Disconnecting Cables and Removing Accessories Prior to proceeding with the disassembly procedure, (1) Disconnect the following: • AC cord • USB cable (if connected) • LAN cable (if connected) • Line cord (if connected) (2) Remove the following: •...

  • Page 169: Paper Tray

    Paper tray 1 Note: • Paper tray 1 (250 sheets, 500 sheets): T1, Paper tray 2 (500 sheets): T2 • The illustration shows paper tray 1 (500 sheets). (1) Remove the two taptite bind B M4x12 screws from the paper tray 1. (2) Lift the plate to remove "A"...

  • Page 170

    (6) Push the hook on the lift gear Z27M10 (or lift gear Z48M10) while lifting the plate-up plate, and remove the lift gear Z27M10 (or lift gear Z48M10) from the paper tray 1. 250 sheets: Lift gear Z27M10 500 sheets: Lift gear Z48M10 (7) Remove the gear Z22M10 and the idle gear Z18M10 from the paper tray 1.

  • Page 171: Back Cover / Outer Chute

    Back cover / Outer chute (1) Open the back cover. (2) Push both ribs of the back cover in the direction of the arrows, and remove the two bosses on the outer chute. Note: • Be careful not to damage the ribs inside the back cover. Boss Rear nip release link Back cover...

  • Page 172: Fuser Cover

    Fuser cover (1) Push the two knobs on the fuser cover, and pull the fuser cover down in the direction of the arrow. (2) Remove the fuser cover from the bosses on the fuser unit, and remove the fuser cover from the machine.

  • Page 173: Mp Cover Assy

    MP cover ASSY (1) Open the MP cover ASSY. (2) Remove the two hooks on the MP paper guide ASSY from the two bosses on the front cover ASSY. Note: • When removing the MP paper guide ASSY from the bosses on the front cover ASSY, pull it out strongly in the direction of arrow 2.

  • Page 174: Front Cover Assy

    Front cover ASSY (1) Push the front cover release button, and open the front cover ASSY. (2) Release the two hooks, and remove the develop joint link from the front cover ASSY. (3) Release the hook, and remove the nip release link from the front cover ASSY. Hook Hook Nip release link...

  • Page 175: Side Cover L / Access Cover

    Side cover L / Access cover (1) Remove the taptite bind B M4x12 screw from the front side of the side cover L. (2) Remove the taptite bind B M4x12 screw from the back side of the side cover L. (3) Keep the two front hooks held down, and rotate the side cover L in the direction of arrow 3b while pushing it in the direction of arrow 3a.

  • Page 176: Side Cover R Assy

    Side cover R ASSY (1) Remove the taptite bind B M4x12 screw from the front side of the side cover R ASSY. (2) Remove the taptite bind B M4x12 screw from the back side of the side cover R ASSY. (3) Keep the two front hooks held down, and rotate the side cover R ASSY in the direction of arrow 3b while pushing it in the direction of arrow 3a.

  • Page 177: Adf Unit

    ADF unit (1) Remove the four taptite cup S M3x8 SR screws to remove the ADF earth harness, document scanner earth harness, and main shield cover plate from the machine. The main shield cover plate is not provided for models with a tray capacity of 500 sheets. Therefore, remove the screw securing the ADF earth harness, the screw securing the document scanner earth harness, and screw A.

  • Page 178

    (4) Remove the two taptite bind B M4x12 screws on the back of the ADF unit. ADF unit Taptite bind B M4x12 Fig. 3-28 (5) Open the ADF unit. While lifting the hinge ASSY L slightly, release the hook on the FFC holder ASSY, and slide it in the direction of the arrow to release the two ribs.

  • Page 179: Hinge Assy L, Hinge R

    9.9.1 Hinge ASSY L (1) Reverse the ADF unit. (2) Remove the three taptite cup S M3x12 screws to remove the hinge ASSY L from the ADF unit. Taptite cup S M3x12 Hinge ASSY L ADF unit Fig. 3-30 9.9.2 Hinge R (1) Remove the taptite cup B M3x10 screw to remove the hinge R and the hinge support R from the ADF unit.

  • Page 180: Adf Document Output Support Flap, Document Sub Tray, Adf Cover Assy

    9.9.3 ADF document output support flap (1) Reverse the ADF unit. (2) Release the two bosses, and remove the ADF document output support flap from the ADF unit. 9.9.4 Document sub tray (1) Open the document sub tray. (2) Release the two bosses, and remove the document sub tray from the ADF unit. 9.9.5 ADF cover ASSY (1) Open the ADF cover ASSY.

  • Page 181

    (4) Remove the earth spring from the ADF cover ASSY. (Duplex scanning models only) Earth spring ADF cover ASSY Fig. 3-33 Assembling Note: • When attaching the earth spring, make sure that the earth spring is attached as shown in the illustration below. Earth spring ADF cover ADF cover...

  • Page 182: Gear Cover

    9.9.6 Gear cover (1) Release the two hooks, and remove the gear cover from the ADF unit. Gear cover ADF unit Hook Hook ADF unit (ADF unit) Gear cover ADF unit Rib (Gear cover) Fig. 3-35 Assembling Note: • When attaching the gear cover, check that the rib on the gear cover is engaged with the rib on the ADF unit.

  • Page 183: Document Separate Roller Assy

    9.9.7 Document separate roller ASSY (1) Turn the conductive bushing in the direction of the arrow to release the lock. (2) Remove the other end of the conductive bushing to remove the document separate roller ASSY from the ADF unit. Conductive bushing Flap ADF Document separate roller ASSY...

  • Page 184: Adf Separation Pad Spring / Adf Separation Pad

    9.9.8 ADF separation pad spring / ADF separation pad Legal model (1) Remove the taptite cup B M3x10 screw from the upper ADF chute. (2) Release the two hooks, and remove the ADF separation pad holder from the upper ADF chute.

  • Page 185

    (4) Remove the support film from the ADF separation pad. ADF separation pad Support film Fig. 3-40 Note: • When the ADF separation pad is replaced, also replace the support film. (5) Release the two pins, and remove the ADF separation spring holder from the upper ADF chute.

  • Page 186

    A4 model (1) Release the two pins, and remove the ADF separation pad holder from the upper ADF chute. (2) Remove the ADF separation pad spring from the upper ADF chute. ADF separation pad holder ADF separation pad spring Upper ADF chute Fig.

  • Page 187

    9.9.9 Second side CIS unit / Second side CIS flat cable (duplex scanning models only) Note: • Perform disassembly in a dust-free location. (1) Release the two hooks, and remove the CIS glass stopper from the ADF unit. Hooks CIS glass stopper ADF unit Fig.

  • Page 188

    (3) Remove the two CIS spacers from both ends of the second side CIS unit. (4) Peel the double-sided tape securing the second side CIS flat cable to the back of the ADF unit. Note: • Once the double-sided tape is peeled from the second side CIS flat cable, replace the tape with new tape.

  • Page 189: Upper Adf Chute

    9.9.10 Upper ADF chute (1) Reverse the ADF unit. (2) Remove the taptite cup B M3x10 screw from the ADF unit. Taptite cup B M3x10 Upper ADF chute Fig. 3-46 (3) Turn the ADF unit back to the normal direction. (4) Turn the conductive bushing in the direction of the arrow to release the lock.

  • Page 190

    (6) Remove the five taptite cup B M3x10 screws from the upper ADF chute. (7) Remove the upper ADF chute from the ADF unit, and pull out the second side CIS flat cable from the upper ADF chute. Note: • Do not disconnect the second side CIS flat cable from the ADF lower chute in this process as it cannot be connected when the ADF lower chute is attached.

  • Page 191

    9.9.11 ADF cover/document detection sensor PCB ASSY / First side document scanning position sensor PCB ASSY / Second side document scanning position sensor PCB ASSY (duplex scanning models only) Memo: • For duplex scanning models, these parts can be replaced without disassembling the second side CIS unit.

  • Page 192

    (3) Push the rib to open it, and remove the first side document scanning position sensor PCB ASSY from the lower ADF chute. (4) Remove the first side document scanning position sensor harness from the first side document scanning position sensor PCB ASSY. (5) Open the shading film 2, push the rib to open it, and remove the second side document scanning position sensor PCB ASSY from the lower ADF chute.

  • Page 193: Drive Frame Assy / Document Feed Roller Assy

    9.9.12 Drive frame ASSY / Document feed roller ASSY 1 (1) Release the two hooks, and remove the document ejection shaft from the lower ADF chute. Document ejection shaft Document ejection roller ASSY 1 Hooks Lower ADF chute Fig. 3-52 (2) Turn the conductive bushing in the direction of the arrow to release the lock.

  • Page 194

    (4) Release the ADF motor harness from the guide of the document cover ASSY. (5) Remove the three taptite cup B M3x10 screws from the lower ADF chute. (6) Release the hook, and remove the lower ADF chute from the document cover ASSY. (7) Remove the second side CIS flat cable.

  • Page 195

    2) Attach the second side CIS flat cable to the second side CIS unit. 3) Pass the second side CIS flat cable through the upper ADF chute and the lower ADF chute. Second side CIS unit Second side CIS flat cable Upper ADF chute Lower ADF chute Fig.

  • Page 196

    5) Fold one end of the second side CIS flat cable (end to be connected to the second side CIS unit) at 205 mm for legal models and 201 mm for A4 models. Reinforcing plate Mountain fold Reinforcing tape Second side CIS flat cable Legal models: 205mm A4 models : 201mm...

  • Page 197

    (8) Turn the conductive bushing in the direction of the arrow to release the lock. (9) Remove the other end of conductive bushing to remove the document feed roller ASSY 1 from the lower ADF chute. Document feed roller ASSY 1 Lower ADF chute Conductive bushing Conductive...

  • Page 198: Adf Motor Assy, First Side Document Hold

    9.9.13 ADF motor ASSY (1) Release the hook, and remove the gear 43 from the drive frame ASSY. (2) Remove the screw pan (s/p washer) M3x6 screw to remove the ADF motor ASSY from the drive frame ASSY. ADF motor ASSY Hook Drive frame ASSY ADF motor ASSY...

  • Page 199: Panel Cover / Printed Panel Cover

    9.10 Panel cover / Printed panel cover <Touch panel models> (Refer to page 3-56 <Non touch panel models>) (1) Release the four hooks, and remove the printed panel cover from the control panel ASSY. (2) Remove the two taptite bind B M4x12 screws. Hooks Printed panel cover Taptite bind B M4x12...

  • Page 200

    (6) Disconnect the touch panel harness and LCD flat cable from the panel PCB ASSY. (7) Remove the screw pan (S/P washer) M3x6 DA screw to remove the touch panel PCB harness. (8) Remove the two screw pan (S/P washer) M3x6 DA screws from the panel PCB ASSY. (9) Release the six hooks, and remove the panel PCB ASSY from the panel cover.

  • Page 201

    (13) Remove the LCD and touch panel ASSY from the panel cover. Touch panel ASSY Panel cover Fig. 3-70 3-55 Confidential...

  • Page 202

    <Non touch panel models> (1) Release the eight hooks, and remove the panel cover from the control panel ASSY. Hooks Panel cover Hooks Hooks Hooks Control panel ASSY Fig. 3-71 (2) Remove the three taptite bind B M4x12 screws from the control panel ASSY. (3) Release the four hooks, and remove the control panel ASSY from the machine.

  • Page 203

    (5) Release the lock, and disconnect the LCD flat cable from the panel PCB ASSY. (6) Disconnect the back light harness from the panel PCB ASSY. Back light harness LCD flat cable Panel PCB ASSY Lock Fig. 3-73 (7) Release the ten hooks (six for DCP models), and remove the panel PCB ASSY from the control panel ASSY.

  • Page 204

    (8) Remove the rubber keys C, R, and L from the control panel ASSY. Rubber key L Rubber key C Rubber key R Positioning pin Positioning pins Positioning pins Control panel ASSY Positioning pins Positioning pins Positioning pins Fig. 3-75 Assembling Note: •...

  • Page 205

    (10) Release the four hooks, and remove the LCD cover and the back light ASSY from the control panel ASSY. Control panel ASSY Back light ASSY Back light ASSY Back light harness Control panel ASSY Hooks Hooks LCD cover <A type> <B type>...

  • Page 206: Document Scanner Unit

    9.11 Document scanner unit (1) Disconnect the document scanner motor harness and the panel PCB harness, and release these harnesses from the securing fixtures. Document scanner motor harness Panel PCB harness Fig. 3-79 Harness routing: Refer to “1.Main PCB ASSY” “10.Panel PCB ASSY”...

  • Page 207

    (3) Release the three hooks. Slightly lift the left side of the document scanner unit, and slide it to the left to remove it. Hooks Document scanner unit Fig. 3-81 3-61 Confidential...

  • Page 208: First Side Cis Unit

    9.11.1 First side CIS unit (1) Remove the five taptite bind B M4x12 screws from the document scanner top cover ASSY. (2) Lift the back of the document scanner top cover ASSY, and slide it in the direction of arrow 2 to remove it from the document scanner unit. Taptite bind B M4x12 Document scanner top cover ASSY Taptite bind B M4x12...

  • Page 209

    (4) Slowly move the CIS carriage in the direction of the arrow to the center, and remove the CIS drive belt from the CIS carriage. CIS drive belt CIS carriage CIS carriage Fig. 3-84 (5) Remove the first side CIS flat cable from the CIS carriage. Double-sided tape CIS carriage First side CIS flat cable...

  • Page 210

    (6) Raise the first side CIS unit from the CIS carriage for 90 degrees, and slide the first side CIS unit in the direction of the arrow to remove it. Remove the first side CIS flat cable from the first side CIS unit. (7) Pull out the first side CIS flat cable from the CIS carriage, and remove it from the document scanner bottom cover ASSY.

  • Page 211

    2) Attach the four pieces of 12 mm x 12 mm double-sided tape to the document scanner bottom cover ASSY, as shown in the illustration below for the positions. Double-sided tapes Document scanner bottom cover ASSY Fig. 3-89 3) Attach the 12 mm x 12 mm double-sided tape to the CIS carriage, as shown in the illustration below for the position.

  • Page 212

    7) Pass the first side CIS flat cable through the two flat cores. 8) Peel the release liner of the four pieces of double-sided tape attached to the document scanner bottom cover ASSY, and secure the first side CIS flat cable to the tape as shown in the illustration below.

  • Page 213: Joint Cover

    9.12 Joint cover (1) Remove the screw pan M4x8, washer spring 2-4, washer 5 to remove the NCU earth harness from the machine, and release the NCU earth harness from the securing fixtures. (2) Disconnect the wireless LAN harness, USB host harness, speaker harness, and NCU harness from the main PCB.

  • Page 214: Wireless Lan Pcb Assy, Usb Host Pcb Assy

    9.13 Wireless LAN PCB ASSY (1) Release the hook, and remove the wireless LAN PCB ASSY from the joint cover. Release the wireless LAN harness from the securing fixtures. (2) Remove the wireless LAN harness from the wireless LAN PCB ASSY. Hook Joint cover Wireless LAN PCB ASSY...

  • Page 215: Speaker Unit

    9.15 Speaker unit (1) Release the hook, and remove the speaker hold spring from the joint cover. (2) Remove the speaker unit from the joint cover, and release the speaker harness from the securing fixtures. Hook Speaker hold spring Speaker harness Speaker unit Joint cover Fig.

  • Page 216: Ncu Pcb Assy

    9.16 NCU PCB ASSY (1) Remove the screw pan (S/P washer) M3.5x6 DA screw and washer 5 to remove the NCU earth harness. Release the NCU harness and the NCU earth harness from the securing fixtures. (2) Remove the two taptite bind B M4x12 screws to remove the NCU unit from the joint cover.

  • Page 217: Main Pcb Assy

    9.17 Main PCB ASSY (1) Disconnect all harnesses and flat cables from the main PCB ASSY. Note: • After disconnecting the flat cable(s), check that the end of each cable is not damaged or short-circuited. • When connecting the flat cable(s), insert it straight. After insertion, check that the cable is not at an angle.

  • Page 218

    (2) Remove the six taptite cup S M3x8 SR screws to remove the main PCB ASSY from the machine. Taptite cup S M3x8 SR Main PCB ASSY Fig. 3-98 3-72 Confidential...

  • Page 219: Fuser Unit

    9.18 Fuser unit CAUTION Some parts inside the machine are extremely hot immediately after the machine is used. When opening the front cover ASSY or back cover to access any parts inside the machine, never touch the shaded parts shown in the following figures. Note: •...

  • Page 220

    (4) Release the heater harness of the fuser unit from the guide on the main frame R, and disconnect the heater harness from the low-voltage-heater harness. <Frame R side> Guide Heater harness Low-voltage-heater harness Fuser unit Fig. 3-100 Harness routing: Refer to “3.Fuser unit”.

  • Page 221

    (7) Remove the taptite pan B M4x14 screw, and remove the fuser unit from the machine. Note: • Make sure that the front cover is closed when removing the fuser unit. Fuser unit Taptite pan B M4x14 Fig. 3-102 Assembling Note: •...

  • Page 222: Laser Unit

    9.19 Laser unit (1) Disconnect the laser unit flat cable from the laser unit. (2) Remove the four taptite cup S M3x8 SR screws, and remove the laser unit from the machine. Note: • Be careful not to touch the lens of the laser unit. Taptite cup S M3x8 SR Taptite cup S M3x8 SR Laser unit flat cable...

  • Page 223: Low-voltage Power Supply Pcb Assy

    9.20 Low-voltage power supply PCB ASSY (1) Remove the two taptite cup S M3x8 SR screws, and remove the scanner earth plate from the machine. (2) Remove the three taptite cup S M3x8 SR screws, taptite bind B M4x12 screw and screw pan M4x8, washer spring 2-4, washer 5 to remove the LV shield plate cover from the machine.

  • Page 224

    (4) Remove the taptite flat B M3x10 screw from the inlet. (5) Remove the screw pan M4x8, washer spring 2-4, washer 5, and remove the earth harness from the machine. (6) Remove the inlet and the power switch from the machine. Note: •...

  • Page 225

    (7) Remove the taptite cup S M3x8 SR screw and the two taptite bind B M4x12 screws to remove the low-voltage power supply PCB ASSY from the machine, and disconnect the low-voltage power supply harness from the low-voltage power supply PCB ASSY. Low-voltage power supply harness Low-voltage power supply PCB ASSY...

  • Page 226: Toner Led Pcb Assy

    9.21 Toner LED PCB ASSY (1) Remove the LV shield plate earth spring from the LV shield plate and the machine. (2) Remove the taptite cup S M3x8 SR screw, and lift the under bar earth plate R from the LV shield plate.

  • Page 227

    (4) Remove the taptite bind B M4x12 screw, and release the hook to open the back side of the hold cover 1. Then remove the hold cover 1 from the machine in the direction of the arrow. (5) Release the toner LED harness from the securing fixtures. (6) Remove the taptite pan B M3x8 screw, and pull out "A"...

  • Page 228: Main Fan

    9.22 Main fan (1) Slide the straight cam in the direction of arrow 1a to remove the boss on the nip release link from the groove on the straight cam. Then slide the straight cam in the direction of arrow 1b to remove it from the machine. Boss Nip release link Straight...

  • Page 229

    (2) Remove the two taptite bind B M4x12 screws, and release the hook to open the upper side of the hold cover 2. (3) Release the main fan harness from the securing fixtures, and remove the main fan from the machine. Hold cover 2 Hook Taptite bind B M4x12...

  • Page 230: Air Duct / Filter

    9.23 Air duct / Filter (1) Release the hook, and remove the filter from the air duct. (2) Push the two pins of the air duct to release the pins, and pull the air duct in the direction of the arrow to remove it from the machine. Filter Hook Air duct...

  • Page 231: Relay Front Pcb Assy

    9.24 Relay front PCB ASSY (1) Release the relay front harness from the securing fixtures. (2) Release the two hooks to remove the front cover sensor from the machine, and then release the front cover sensor harness from the hook. Note: •...

  • Page 232: Registration Clutch / T1 Clutch

    9.25 Registration clutch / T1 clutch (1) Release the registration clutch harness and the T1 clutch harness from the securing fixtures. (2) Remove collar 6, and remove the registration clutch from the machine. (3) Release the hook, and remove the T1 clutch from the machine. Note: •...

  • Page 233: Main Frame L Assy

    9.26 Main frame L ASSY (1) Remove the two taptite bind B M4x12 screws, and remove the rear under bar from the machine. Note: • Only DCP-8250DN, MFC-8950DW, MFC-8950DWT, MFC-8952DW and MFC- 8952DWT are equipped with a rear under bar. (2) Remove the two taptite bind B M4x12 screws, and remove the front under bar and the under bar earth plate R.

  • Page 234

    (6) Remove the three taptite cup S M3x8 SR screws and four taptite bind B M4x12 screws, and remove the main frame L ASSY from the machine. Then pull out the low-voltage power supply harness, the eject sensor harness and the main HVPS flat cable from the main frame L ASSY.

  • Page 235: Main Motor Assy

    9.27 Main motor ASSY (1) Remove the eight taptite bind B M4x12 screws, and remove the drive sub ASSY from the main frame L ASSY. Note: • When removing the drive sub ASSY, be careful not to damage the shaft of the drive sub ASSY.

  • Page 236

    Note: • Do not allow the metallic gear shaft of the main motor ASSY and drive sub ASSY to face down. Failure to observe this may cause the steel plate to be bend. (2) Remove the four taptite cup S M3x8 SR screws, and remove the main motor ASSY and the main motor cover from the drive sub ASSY.

  • Page 237: Develop Joint Gear 37 / Develop Joint

    9.28 Develop joint gear 37 / Develop joint (1) Tilt the develop joint to remove it from the drive sub ASSY, and then remove the develop joint spring from the drive sub ASSY. Note: • When removing the develop joint, be careful not to damage the hooks. (2) Pull out the develop joint gear 37 from the drive sub ASSY.

  • Page 238: Lt Drive Gear

    9.29 LT drive gear 29 (1) Pull out the LT drive gear 29 from the main frame L ASSY. LT drive gear 29 Main frame L ASSY Fig. 3-121 3-92 Confidential...

  • Page 239: Toner Sensor Pcb Assy

    9.30 Toner sensor PCB ASSY (1) Remove the MP sector gear spring from the main frame L ASSY. (2) Release the toner sensor harness from the securing fixtures. (3) Release the two hooks to remove the toner sensor PCB ASSY from the main frame L ASSY.

  • Page 240: Mp Solenoid

    9.31 MP solenoid (1) Remove the MP drive gear 18 from the main frame L ASSY. (2) Release the MP solenoid harness from the securing fixtures. (3) Remove the taptite bind B M3x10 screw, and remove the MP solenoid and the MP solenoid lever from the main frame L ASSY.

  • Page 241: Develop Clutch 51r / Develop One Way Clutch

    9.32 Develop clutch 51R / Develop one way clutch 53 (1) Remove the develop idle gear 53 from the main frame L ASSY. (2) Remove the develop shaft gear 22 from the main frame L ASSY. (3) Release the develop clutch harness from the securing fixtures, and remove the develop clutch 51R from the main frame L ASSY.

  • Page 242: New Toner Actuator

    9.33 New toner actuator (1) Remove "A" on the new toner actuator spring from the main frame L ASSY. Turn the new toner actuator in the direction of the arrow, and release the hook to remove the new toner actuator from the main frame L ASSY. (2) Remove the new toner actuator spring from the new toner actuator.

  • Page 243: Internal Temperature Thermistor

    9.34 Internal temperature thermistor (1) Release the internal temperature thermistor harness from the two hooks and the guide, and remove the internal temperature thermistor from the main frame L ASSY. Internal temperature thermistor harness Internal temperature thermistor Hook Internal temperature thermistor harness Guide Hook...

  • Page 244: Fuser Drive Gear

    9.35 Fuser drive gear 39 (1) Remove the four taptite bind B M4x12 screws, and release the two hooks to remove the main PCB shield calking ASSY from the main frame L ASSY. Note: • Do not allow the metallic gear shaft of the main PCB shield calking ASSY to face down.

  • Page 245

    (2) Remove the fuser drive gear 39 from the main frame L ASSY. Fuser drive gear 39 Main frame L ASSY Fig. 3-128 3-99 Confidential...

  • Page 246: Duplex Solenoid

    9.36 Duplex solenoid (1) Remove the eject idle gear 20 from the main frame L ASSY. (2) Remove the eject switch arm spring from the main frame L ASSY. (3) Remove the eject switch arm from the main frame L ASSY. (4) Remove the eject sector gear spring from the main frame L ASSY.

  • Page 247: Back Cover Sensor

    9.37 Back cover sensor (1) Release the back cover sensor harness from the securing fixtures. (2) Release the two hooks, and remove the back cover sensor from the main frame L ASSY. Back cover sensor harness Hook Hook Back cover sensor Main frame L ASSY Back cover sensor Hook...

  • Page 248: Lt Connector (t), Lt Connector (t)

    9.38 LT connector (T1) (1) Remove the three taptite bind B M4x12 screws, and remove the bottom frame L from the main frame L ASSY. Then pull out the LT harness from the main frame L ASSY. (2) Release the two hooks to remove the LT connector (T1) from the bottom frame L. Note: •...

  • Page 249: T1 Roller Holder Assy

    9.39 T1 roller holder ASSY (1) Push the T1 lift arm in the direction of arrow 1, and remove the boss on the T1 roller holder ASSY from the T1 lift arm. (2) Turn the T1 roller holder ASSY in the direction of arrow 2a, and slide it in the direction of arrow 2b to remove it from the T1 separation roller shaft.

  • Page 250: High-voltage Power Supply Pcb Assy

    9.40 High-voltage power supply PCB ASSY (1) Remove the four taptite bind B M4x12 screws and the two screw pan (S/P washer) M3x12DB screws. Slightly lift the base plate and slide it in the direction of the arrow to remove it from the machine. Base plate Taptite bind B M4x12...

  • Page 251

    (2) Open the HV insulation sheet. Remove the two taptite bind B M4x12 screws, and release the two hooks. Lift the HV insulation sheet and the high-voltage power supply PCB ASSY, and remove the feed earth spring from the machine. High-voltage power supply PCB ASSY Feed earth spring Taptite bind B M4x12...

  • Page 252

    (3) Disconnect the registration front/rear sensor harness, the T1 paper feed sensor harness and the MP paper empty sensor harness from the high-voltage power supply PCB ASSY, and remove the high-voltage power supply PCB ASSY from the machine. (4) Disconnect the main HVPS flat cable from the high-voltage power supply PCB ASSY. MP paper empty sensor harness T1 paper feed sensor harness Main HVPS flat cable...

  • Page 253: Eject Sensor Pcb Assy

    9.41 Eject sensor PCB ASSY (1) Release the eject sensor harness from the securing fixtures. (2) Release the hook, and remove the eject sensor PCB ASSY from the machine. Hook Eject sensor harness Eject sensor PCB ASSY Fig. 3-136 Harness routing: Refer to “4.High-voltage power supply PCB ASSY”.

  • Page 254: Mp Roller Holder Assy / Mp Separation Pad Assy / Mp Separation Pad Spring

    9.42 MP roller holder ASSY / MP separation pad ASSY / MP separation pad spring (1) Open the MP roller cover. Release the hook on the MP holder bushing, and slide the MP holder bushing in the direction of arrow 1 to remove it from the machine. (2) Slide the MP roller holder ASSY in the direction of arrow 2a to remove it from the MP separation roller shaft.

  • Page 255

    9.43 T1 paper feed sensor PCB ASSY / T1 paper feed actuator / T1 paper feed actuator spring (1) Release the T1 paper feed sensor harness (white connector) from the securing fixtures. (2) Remove the taptite bind B M3x10 screw, and release the hook to remove the T1 paper feed actuator holder ASSY from the machine.

  • Page 256

    (3) Turn the T1 paper feed actuator in the direction of arrow 3a, and push the hook on the T1 paper feed actuator holder to slide the T1 paper feed actuator in the direction of arrow 3b to remove it from the T1 paper feed actuator holder. (4) Remove the T1 paper feed actuator spring from the T1 paper feed actuator.

  • Page 257

    9.44 MP paper empty sensor PCB ASSY / MP paper empty actuator 1 / MP paper empty actuator 2 (1) Remove the five taptite bind B M4x12 screws, and remove the main frame R from the machine. Then pull out the low-voltage power supply harness from the main frame R. Low-voltage power supply harness Main frame R Taptite bind B M4x12...

  • Page 258

    (2) Release the MP paper empty sensor harness from the paper feed frame ASSY. (3) Remove the two taptite bind B M3x10 screws, and release the two hooks to remove the MP feed frame from the paper feed frame ASSY. Then pull out the MP paper empty sensor harness from the paper feed frame ASSY.

  • Page 259

    (5) Turn MP paper empty actuator 2 in the direction of arrow 5a, and push the hook in the direction of arrow 5b to slide MP paper empty actuator 1 in the direction of arrow 5c to remove it from the MP feed frame in the direction of arrow 5d. (6) Turn MP paper empty actuator 2 in the direction of arrow 5a, and remove it from the MP feed frame in the direction of arrow 6.

  • Page 260: Registration Front/rear Sensor Pcb Assy / Registration Front Actuator

    9.45 Registration front/rear sensor PCB ASSY / Registration front actuator / Registration rear actuator / Registration actuator spring (1) Release the low-voltage power supply harness from the securing fixtures. (2) Release the two hooks, and remove the paper feed frame from the feed chute. Hook Paper feed frame Hook...

  • Page 261

    (3) Remove the earth registration spring from the hook on the feed chute, and remove the earth registration spring from the feed chute. (4) Remove the electrode TR from the hook on the registration actuator holder ASSY, and remove the electrode TR from the registration actuator holder ASSY. (5) Release the hook, and remove the registration actuator holder ASSY from the feed chute.

  • Page 262

    (6) Remove the registration actuator spring from the registration front actuator and the registration actuator holder ASSY. (7) Turn the registration front actuator to remove it from the guide, and then slide it in the direction of the arrow to remove it from the registration actuator holder ASSY. (8) Remove the registration actuator spring from the registration rear actuator and the registration actuator holder ASSY.

  • Page 263: Disassembly Procedure (lt Unit), Disassembly Procedure (lt Unit)

    10. DISASSEMBLY PROCEDURE (LT UNIT) 10.1 Paper tray 2 (1) Remove the two taptite bind B M4x12 screws from paper tray 2. (2) Lift the plate to remove "A" on the T2 tray indicator from the plate, remove the four bosses, and remove the T2 tray cover from paper tray 2.

  • Page 264

    (6) Push the hook on the lift gear Z48M10 while lifting the plate-up plate, and remove the lift gear Z48M10 from paper tray 2. (7) Remove the gear Z22M10 and the idle gear Z18M10 from paper tray 2. Plate-up plate Hook Paper tray 2 Plate-up plate...

  • Page 265: T2 Roller Holder Assy

    10.2 T2 roller holder ASSY (1) Push the T2 lift arm in the direction of arrow 1a, and remove the boss on the T2 roller holder ASSY from the T2 lift arm. Then turn the T2 roller holder ASSY in the direction of arrow 1b.

  • Page 266: T2 Side Cover L

    10.3 T2 side cover L (1) Remove the taptite bind B M4x12 screw from the front side of the T2 side cover L. (2) Release the two front hooks, two top hooks and four bottom hooks, and remove the T2 side cover L from the LT unit.

  • Page 267: T2 Side Cover R

    10.4 T2 side cover R (1) Remove the taptite bind B M4x12 screw from the front side of the T2 side cover R. (2) Release the two front hooks, two top hooks and four bottom hooks, and remove the T2 side cover R from the LT unit.

  • Page 268: T2 Front Cover Assy

    10.5 T2 front cover ASSY (1) Remove the taptite cup S M3x8 SR screw from the T2 front cover ASSY. (2) Release the two hooks on the T2 front cover ASSY, and remove the T2 front cover ASSY from the LT unit. LT unit Taptite cup S M3x8 SR Hook...

  • Page 269: T2 Relay Pcb Assy

    10.6 T2 relay PCB ASSY (1) Disconnect all harnesses from the T2 relay PCB ASSY. T2 paper feed sensor harness LT harness T2 relay PCB ASSY T2 clutch harness Fig. 3-154 (2) Release the hook to remove the core of the LT connector ASSY (T2) from the LT unit. (3) Release the hook to remove the T2 relay PCB ASSY from the LT unit.

  • Page 270: T2 Clutch

    10.7 T2 clutch (1) Release the T2 clutch harness from the securing fixtures. (2) Release the hook on the T2 clutch, and remove the T2 clutch from the LT unit. T2 clutch LT unit T2 clutch harness Hook Fig. 3-156 3-124 Confidential...

  • Page 271: T2 Paper Feed Sensor Pcb Assy

    10.8 T2 paper feed sensor PCB ASSY (1) Remove the four taptite bind B M4x12 screws securing the two under bars, and remove the two under bars from the LT unit. Taptite bind B M4x12 Under bars Taptite bind B M4x12 LT unit Fig.

  • Page 272

    (3) Remove the three taptite cup S M3x8 SR screws, and remove the T2 paper feed frame unit from the LT unit. Then pull out the T2 paper feed sensor harness from the LT unit. LT unit T2 paper feed sensor harness T2 paper feed frame unit Taptite cup S M3x8 SR...

  • Page 273

    (6) Remove the taptite bind B M3x10 screw, and release the hook to remove the T2 paper feed actuator holder ASSY from the T2 paper feed frame unit. Then pull out the T2 paper feed sensor harness from the T2 paper feed frame unit. Hook Taptite bind B M3x10 T2 paper feed actuator holder ASSY...

  • Page 274

    (7) Turn the T2 paper feed actuator in the direction of arrow 7a, and push the hook on the T2 paper feed actuator holder ASSY to slide the T2 paper feed actuator in the direction of arrow 7b to remove it from the T2 paper feed actuator holder ASSY. (8) Remove the T2 paper feed actuator spring from the T2 paper feed actuator.

  • Page 275: T2 Back Cover

    10.9 T2 back cover (1) Remove the two taptite bind B M4x12 screws, and remove the T2 back cover from the LT unit. T2 back cover Taptite bind B M4x12 LT unit Fig. 3-163 3-129 Confidential...

  • Page 276: Lt Connector Assy (t), Lt Connector Assy (t)

    10.10 LT connector ASSY (T2) (1) Release the two hooks, and remove the LT connector ASSY (T2) from the LT unit. LT connector ASSY (T2) Hooks LT unit Fig. 3-164 3-130 Confidential...

  • Page 277

    CHAPTER ADJUSTING AND UPDATING SETTINGS AS REQUIRED AFTER PARTS REPLACEMENT Confidential...

  • Page 278: As Required After Parts Replacement

    CHAPTER 4 ADJUSTING AND UPDATING SETTINGS AS REQUIRED AFTER PARTS REPLACEMENT This chapter describes adjustments and updating of settings, which are required if the main PCB ASSY and some other parts have been replaced. CONTENTS 1. IF YOU REPLACE THE MAIN PCB ASSY..............4-1 1.1 Installing Firmware ....................

  • Page 279: If You Replace The Main Pcb Assy

    1. IF YOU REPLACE THE MAIN PCB ASSY <What to do after replacement> • Installing firmware (panel firmware, sub firmware, and main firmware) • Setting by country (function code: 74) • Initializing the EEPROM of the main PCB ASSY (function code: 01) •...

  • Page 280: Installing Firmware, Checking Firmware Version

    Installing Firmware 1.1.1 Checking firmware version Check that the firmware installed on the main PCB is the latest version. If it is the latest version, there is no need to install the firmware. If it is not, be sure to install the firmware to the main PCB as described in "1.1 Installing Firmware".

  • Page 281

    (4) Open the temporary folder and double-click "FILEDG32.EXE" to start it, and select the "Brother Maintenance USB Printer." (5) Drag and drop the panel firmware (LZXXXX_$_upd) in the same folder onto the "Brother Maintenance USB Printer" icon. The panel firmware file is loaded to the machine, and installing to the flash ROM starts.

  • Page 282: Setting Serial Number And Entering Adjusted Value Of Laser Unit

    (2) Double-click the "BrUsbsn.exe" file that was copied to the temporary folder to start it. (3) Click "Laser 11Model". (4) In the [Port] field, select the port number assigned to the Brother Maintenance USB Printer. If the port number is unknown, follow the steps below to check it.

  • Page 283: Acquiring White Level Data

    (6) Enter the number (last digit) on the laser serial number label attached to the location shown in the illustration below in the [SJxxxxxxVXXYYK] field. Laser plate Laser unit Laser serial number label Fig. 4-1 (7) Enter the number (from sixth last digit to second last digit, excluding the last digit) on the laser serial number label in the [Scanner Video Clk] field.

  • Page 284: If You Replace The Laser Unit, Entering Adjusted Value Of Laser Unit

    2. IF YOU REPLACE THE LASER UNIT <What to do after replacement> • Entering adjusted value of laser unit What you need to prepare (1) One USB cable ® (2) Create a temporary folder on the C drive of the computer (Windows XP or higher).

  • Page 285

    (5) In the [Port] field, select the port number assigned to the Brother Maintenance USB Printer. If the port number is unknown, follow the steps below to check it. 1) Click [Start], [Settings], and [Printers and Faxes]. The Printers and Faxes window appears.

  • Page 286: Resetting Irregular Power Supply Detection Counter

    (3) Double-click "FILEDG32.EXE" on the computer to start it, and select the "Brother Maintenance USB Printer". (4) Drag and drop the "SQWAVE.PJL" file onto the "Brother Maintenance USB Printer" icon. (5) Turn OFF the power switch of the machine. Confidential...

  • Page 287

    (1) Enter maintenance mode. (2) Connect the computer to the machine with the USB cable. (3) Double-click "FILEDG32.EXE" on the computer to start it, and select the "Brother Maintenance USB Printer". (4) Drag and drop the "PREDISCHAGESET_RESET.pjl" file onto the "Brother Maintenance USB Printer"...

  • Page 288: Replacement Parts, Replace Any Periodic Replacement Parts

    5. IF YOU REPLACE ANY PERIODIC REPLACEMENT PARTS <What to do after replacement> • Resetting counters for periodic replacement parts (1) While the machine is in the ready state, press the [3] and [9] buttons simultaneously. "Parts Replacement/Reset-Laser Unit" is displayed on the LCD. (2) Press the [ ] or [ ] button to display the part for which the counter is to be reset, and...

  • Page 289: Installing Firmware (touch Panel Models Only), Installing Firmware (touch Panel Models Only)

    6. IF YOU REPLACE THE CONTROL PANEL ASSY OR TOUCH PANEL ASSY <What to do after replacement> • Installing panel firmware (touch panel models only) • Adjusting touch panel (touch panel models only) • Checking LCD operation • Checking control panel operation What you need to prepare (1) One USB cable ®...

  • Page 290

    (4) Open the temporary folder and double-click "FILEDG32.EXE" to start it, and select the "Brother Maintenance USB Printer." (5) Drag and drop the panel firmware (LZXXXX_$_upd) in the same folder onto the "Brother Maintenance USB Printer" icon. The panel firmware file is loaded to the machine, and installing to the flash ROM starts.

  • Page 291: Checking Lcd Operation, Checking Control Panel Operation

    Adjusting Touch Panel (Touch Panel Models Only) (1) Enter maintenance mode, and press the [6] and [1] buttons in this order. The touch panel adjustment screen appears on the LCD. (2) Use a touch panel stylus and touch the mark in the upper left corner of the screen. When the touched mark has disappeared, touch the next mark.

  • Page 292

    7. IF YOU REPLACE THE DOCUMENT SCANNER UNIT, ADF UNIT (DUPLEX SCANNING MODEL), OR CIS UNIT <What to do after replacement> • Acquiring white level data (function code: 55) Acquiring White Level Data (function code: 55) (1) Enter maintenance mode, and press the [5] button twice. "Press START" is displayed on the LCD.

  • Page 293: Service Functions

    CHAPTER 5 SERVICE FUNCTIONS Confidential...

  • Page 294: Chapter 5 Service Functions

    CHAPTER 5 SERVICE FUNCTIONS Describes the maintenance mode which is exclusively designed for the purpose of checking the settings and adjustments using the buttons on the control panel. This chapter also covers not-disclosed-to-users function menus, which activate settings and functions or reset the parts life.

  • Page 295

    1.3.25 Check fan operation (function code: 78) ..........5-40 1.3.26 Display machine log information (function code: 80)........ 5-41 1.3.27 Display machine error code (function code: 82)........5-44 1.3.28 Send communication log information to telephone line (function code: 87)..................5-44 1.3.29 Reset counters for periodic replacement parts (function code: 88) ..5-44 1.3.30 Quit maintenance mode (function code: 99) ..........

  • Page 296: Maintenance Mode, End-user Accessible Maintenance Mode, Mode For Service Personnel

    1. MAINTENANCE MODE Maintenance mode is exclusively designed for checking, setting and adjusting the machine using the buttons on the control panel. Using maintenance mode functions, you can conduct operational checks of sensors or test printing, display the log information or error codes, and change the worker switches (WSW) etc. How to Enter Maintenance Mode 1.1.1 Method of entering end-user accessible maintenance mode Basically, the maintenance mode functions should only be accessed by service personnel.

  • Page 297: List Of Maintenance Mode Functions

    List of Maintenance Mode Functions Function Function Refer to: code Initialize EEPROM parameters 1.3.1 (5-3) Print white level/black level data for document scanning 1.3.2 (5-4) compensation Move CIS unit to transportation position 1.3.3 (5-6) ADF performance test 1.3.4 (5-6) Print test pattern 1.3.5 (5-7) Set worker switches (WSW) 1.3.6 [1] (5-8)

  • Page 298

    Details of Maintenance Mode Functions 1.3.1 Initialize EEPROM parameters (function code: 01, 91) <Function> This function is used to initialize the setting values for operation parameters, user switches, and worker switches (WSW) registered in the EEPROM. Entering function code 01 initializes most EEPROM areas.

  • Page 299: Operation Procedure

    1.3.2 Print white level/black level data for document scanning compensation (function code: 05) <Function> This function is used to print the contrast level data for document scanning compensation. <Operation Procedure> Note: • Be sure not to perform this operation procedure immediately after the power is turned ON, but after performing the document scanning operation at least once.

  • Page 300

    Fig. 5-1 Confidential...

  • Page 301

    1.3.3 Move CIS unit to transportation position (function code: 06) <Function> This function is used to move the CIS unit of the document scanner unit to the transportation position (left end) immediately before packing and shipping the machine after repair and operation check.

  • Page 302

    1.3.5 Print test pattern (function code: 09) <Function> This function is used to print a test pattern (print quality check sheet) to check any missing image and print quality. <Operation Procedure> (1) Press the [0] and [9] buttons in this order in the initial state of maintenance mode. "Maintenance 09"...

  • Page 303

    1.3.6 Set worker switches (WSW) and print worker switch setting data (function code: 10, 11) [1] Set worker switches (WSW) (function code: 10) <Function> The worker switches shown in the table below can be used to set the function to satisfy various requirements.

  • Page 304

    WSW No. Function WSW35 Function setting 13 WSW36 Function setting 14 WSW37 Function setting 15 WSW38 V.34 transmission settings WSW39 V.34 transmission speed WSW40 V.34 modem settings WSW41 ON-duration of the scanning light source WSW42 Internet mail settings WSW43 Function setting 16 WSW44 Speeding up scanning-1 WSW45...

  • Page 305

    WSW No. Function WSW79 Function setting 27 WSW80 Copy speed adjustment WSW81 Emulation function deletion WSW82 AirPrint icon type setting Refer to the separate manual for details of worker switches. <Operation Procedure> (1) Press the [1] and [0] buttons in this order in the initial state of maintenance mode. "WSW00"...

  • Page 306

    [2] Print worker switch (WSW) setting data (function code: 11) <Function> This function is used to print the setting items of the worker switches and the set details. <Operation Procedure> (1) Press the [1] button twice in the initial state of maintenance mode. "PRINTING" is displayed on the LCD and the Configuration List shown below is printed.

  • Page 307

    1.3.7 Check LCD operation (function code: 12) <Function> This function is used to check that the LCD on the control panel is operating normally. <Operation Procedure> (1) Press the [1] and [2] buttons in this order in the initial state of maintenance mode. The LCD appears as in <Display 1>...

  • Page 308

    (3) When button operation is normal, the machine returns to the initial state of maintenance mode when the last button is pressed. To cancel operation and return to the initial state of maintenance mode, press the [Stop/Exit] button. DCP-8110D Fig. 5-5 DCP-8110DN/8150DN/8152DN/8155DN/8157 Fig. 5-6 DCP-8250DN Fig. 5-7 5-13 Confidential...

  • Page 309

    MFC-8510DN/8512DN/8515DN/8520DN/8710DW/8712DW/8810DW/8910DW/8912DW Fig. 5-8 MFC-8950DW/8950DWT/8952DW/8952DWT Fig. 5-9 5-14 Confidential...

  • Page 310

    1.3.9 Display software version (function code: 25) <Function> This function is used to check the version information of the firmware or programs, or check sum information. <Operation Procedure> (1) Press the [2] and [5] buttons in this order in the initial state of maintenance mode. "TOTAL: Ver T"...

  • Page 311

    1.3.10 Check sensor operation (function code: 32) <Function> This function is used to check that the sensors are operating normally. <Operation Procedure> (1) Press the [3] and [2] buttons in this order in the initial state of maintenance mode. The sensor operating conditions defined in the table below are applied.

  • Page 312

    (4) Operate the sensor from OFF to ON as below to check the operation of the corresponding solenoid or clutch. Sensor operation Solenoid / clutch operation Change T1 paper feed sensor from OFF to The T1 clutch remains ON for the specified time.

  • Page 313

    1.3.11 Display LAN connection status (function code: 33) <Function> This function is used to check the connection status of the wired LAN. <Operation Procedure> (1) Press the [3] button twice in the initial state of maintenance mode. The current connection status of the wired LAN (see the table below) is displayed on the LCD.

  • Page 314: Setting Functions

    1.3.12 Set PC print functions (function code: 43) <Function> This function is used to change the settings of the various print functions summarized in the table below. <Operation Procedure> (1) Press the [4] and [3] buttons in this order in the initial state of maintenance mode. "Manual Feed"...

  • Page 315

    Description Set value Default Auto Skip Setting to skip at back end/tip of On/Off paper Left Margin Left margin setting 0 to 145 (columns) 0 (column) Right Margin Right margin setting 10 to 155 (columns) 80 (columns) Top Margin Top margin setting 0 to 2.00 (inches) 0.5 (inches) Bottom Margin...

  • Page 316

    Detail description Orientation Changes the printing direction. Valid for printing from the computer. P-Pos X-Offset Sets the print position offset in the X (landscape) direction. Valid for printing from the computer. When X-Offset is set on the computer, the setting on the computer supersedes the setting on the LCD.

  • Page 317

    1.3.13 Change USB No. return value / Adjust left-end print start position on second side when duplex printing / Change ON/OFF setting for Deep Sleep function (function code: 45) Change USB No. return value <Function> ® When the operating system (OS) installed on the computer is Windows Vista , and the machine is connected to this computer using USB2.0FULL, the OS may not be able to obtain the USB device serial number depending on the computer and USB device.

  • Page 318

    Change ON/OFF setting for Deep Sleep function when Deep Sleep function is enabled and machine has Storage Data (Secure) <Function> When the machine has the Storage Data (Secure) available, use this function to set whether to permit the machine to enter Deep Sleep mode. Description DpSlp.StrDt = ON The Deep Sleep function is activated even when the machine has...

  • Page 319

    1.3.14 Set country/language (function code: 52) <Function> This function is user accessible, and is used to customize the EEPROM according to the language, function settings, and worker switch settings. Note: • This function can be used only in the following nations: France, Belgium, Holland, Norway, Sweden, Finland, Denmark, Austria, Czech, Hungary, Poland, General (Others), Bulgaria, Romania, Slovakia, Spain, Portugal <Operation Procedure>...

  • Page 320

    1.3.15 Transfer received fax data/log information (function code: 53) <Function> When the machine is unable to print the received fax data due to an error current in the printing mechanism, this function is used to transfer the data to another machine. The communication management report, communication list, or machine log information can also be transferred.

  • Page 321

    Job number to identify the transmission Total number of pages to be transferred Station ID registered in the sender machine Fax number of the sender machine Telephone number of the sender machine Transfer date and time Model code Boot ROM information ROM information Serial number Fig.

  • Page 322

    1.3.16 Fine-tune scanning position (function code: 54) <Function> This function is used to adjust the scanning start/end positions for the ADF and the document scanner unit. <Operation Procedure> (1) Press the [5] and [4] buttons in this order in the initial state of maintenance mode. "SCAN START ADJ."...

  • Page 323

    • This adjustment requires a touch panel stylus with a thin tip. A commercially available stylus designed for electronic dictionaries or personal digital assistance (PDA) can be used. If one is not available at hand, order a "STYLUS" from Brother's parts list. <Operation Procedure>...

  • Page 324

    1.3.19 Continuous print test (function code: 67) <Function> This function is used to conduct paper feed and eject tests while printing patterns. <Operation Procedure> (1) Press the [6] and [7] buttons in this order in the initial state of maintenance mode. "SELECT: K 100%"...

  • Page 325

    Fig. 5-14 5-30 Confidential...

  • Page 326

    1.3.20 Print frame pattern (single-side printing) (function code: 69) <Function> This function is used to print a frame pattern on a single side of the paper and check for printing flaws. <Operation Procedure> Be sure to set the Letter size paper for test pattern printing before commencing the following procedure.

  • Page 327

    Fig. 5-15 5-32 Confidential...

  • Page 328

    1.3.21 Print frame pattern (duplex printing) (function code: 70) <Function> This function is used to print a frame pattern on both sides of the paper and check for printing flaws. <Operation Procedure> Be sure to set the Letter size paper for test pattern printing before commencing the following procedure. (1) Press the [7] and [0] buttons in this order in the initial state of maintenance mode.

  • Page 329

    1.3.22 Print solid pattern (function code: 71) <Function> This function is used to print a solid pattern to check whether the developer roller or exposure drum is dirty or damaged. <Operation Procedure> Be sure to set the Letter size paper for test pattern printing before commencing the following procedure.

  • Page 330

    • If there is no entry for one minute or longer, the machine returns to the initial state of maintenance mode automatically, regardless of the display status. <Country code list> DCP-8150DN DCP-8155DN Country DCP-8110D DCP-8110DN DCP-8250DN DCP-8152DN DCP-8157DN U.S.A. 0001 0301...

  • Page 331

    DCP-8150DN DCP-8155DN Country DCP-8110D DCP-8110DN DCP-8250DN DCP-8152DN DCP-8157DN China Philippines Taiwan South Africa 1074 (1024) 5574 (5524) Turkey 1074 (1025) 5574 (5525) Sweden 1004 5004 Newzealand 0540 Slovakia 1004 5004 Bulgaria 1004 5004 Romania 1004 5004 Czech 1004 5004 Republic...

  • Page 332

    4640 Gulf 0174 (0141) 4674 (4641) 5174 (5141) Korea 0140 4640 India 0145 4645 Russia 0248 4148 Iran General 0150 0250 4150 This code list is current as of March 2012. Please contact Brother for the latest information. 5-37 Confidential...

  • Page 333

    1.3.24 Print maintenance information (function code: 77) <Function> This function is used to print the maintenance information, such as the remaining amount of consumables, number of replacements, and counter values (refer to the next page). The details to be printed are almost the same as the second page of Printer Settings. <Operation Procedure>...

  • Page 334

    Display information Model name Remaining life of fuser unit Serial number Remaining life of laser unit Model code Total printed pages Country code Total copied pages Switch check sum (factory use) Total printed PC pages Main firmware version Total printed list/fax pages Sub firmware version Accumulated average coverage Boot firmware version...

  • Page 335

    1.3.25 Check fan operation (function code: 78) <Function> This function is used to check that the main fan is operating normally. The rotation speed is changed among three settings: 100%, 50% and OFF. <Operation Procedure> (1) Press the [7] and [8] buttons in this order in the initial state of maintenance mode. "F 100" is displayed on the LCD, and the main fan operates at 100% rotation speed.

  • Page 336

    1.3.26 Display machine log information (function code: 80) <Function> This function is used to display the log information on the LCD. <Operation Procedure> (1) Press the [8] and [0] buttons in this order in the initial state of maintenance mode. "USB:********"...

  • Page 337

    LCD * Description ENVLOP:00000000 Printed envelopes :00000000 Printed pages of A5 size paper OTHER :00000000 Printed pages of other types of paper PLTNRE:00000000 Total printed pages of plain, thin, and recycled paper TKTRBD:00000000 Total printed pages of thick, ultra-thick, and bond paper ENVTYP:00000000 Total printed pages of envelope, thick envelope, and thin envelope...

  • Page 338

    LCD * Description FUSR_ER:0000 The number of fuser unit errors MTLK_ER:0000 The number of laser unit polygon motor errors DEVSTATUS__01:00 * Log for design analysis The serial number can be changed according to the steps below. (1) While the serial number is displayed, press the [9], [4], [7], and [5] buttons in this order.

  • Page 339

    1.3.27 Display machine error code (function code: 82) <Function> This function is used to display the latest error code on the LCD. <Operation Procedure> (1) Press the [8] and [2] buttons in this order in the initial state of maintenance mode. "MACHINE ERR XXXX"...

  • Page 340

    1.3.30 Quit maintenance mode (function code: 99) <Function> This function is used to quit maintenance mode. <Operation Procedure> (1) Press the [9] button twice in the initial state of maintenance mode. The machine quits maintenance mode and returns to the ready state. 5-45 Confidential...

  • Page 341: Other Service Functions

    2. OTHER SERVICE FUNCTIONS Change ON/OFF Setting for Deep Sleep Mode This function allows you to change the Deep Sleep mode setting to ON or OFF. <Operation Procedure> Non touch panel models Touch panel models (1) While the machine is in the ready state, (1) While the machine is in the ready state, press the [Menu] button.

  • Page 342

    Change ON/OFF Setting for Sleep Mode This function allows you to change the sleep mode setting to ON or OFF. <Operation Procedure> Non touch panel models Touch panel models (1) While the machine is in the ready state, (1) While the machine is in the ready state, press the [Menu] button.

  • Page 343

    Reset Periodic Replacement Parts This function is used to reset the corresponding counter after a periodic replacement part has been replaced correctly or to reset an error caused due to a consumable part being replaced by the user via an incorrect procedure. <Operation Procedure>...

  • Page 344: Reset Developer Roller Counter

    Reset Developer Roller Counter This function allows you to manually perform the same operation as when the toner cartridge is replaced with a new one. The purpose of this function is to provide an error resetting method in the event that the toner end display was not cleared because the new toner cartridge was not detected by the machine for any reason.

  • Page 345: Display Rom Version, Perform Demo Printing

    Display ROM Version This function is used to display the ROM version. <Operation Procedure> Non touch panel models Touch panel models (1) While the machine is in the ready state, (1) While the machine is in the ready state, press the [#] and [*] buttons press the [#] and [*] buttons simultaneously.

  • Page 346: Wiring Diagram

    CHAPTER 6 WIRING DIAGRAM Confidential...

  • Page 347

    CHAPTER 6 WIRING DIAGRAM This chapter provides the wiring diagram for the connections of the PCBs. CONTENTS 1. WIRING DIAGRAM ....................... 6-1 Confidential...

  • Page 348

    1. WIRING DIAGRAM Wiring diagram Confidential...

  • Page 349: Periodical Maintenance

    CHAPTER PERIODICAL MAINTENANCE Confidential...

  • Page 350: Table Of Contents

    CHAPTER 7 PERIODICAL MAINTENANCE CONTENTS 1. SAFETY PRECAUTIONS ..................... 7-1 2. PERIODICAL REPLACEMENT PARTS ............... 7-2 Preparation ......................... 7-2 Fuser unit ........................7-3 Laser unit ........................7-7 MP paper feeding kit ....................7-13 Paper feeding kit 1 ....................7-14 Paper feeding kit 2 ....................7-16 Confidential...

  • Page 351

    1. SAFETY PRECAUTIONS To avoid creating secondary problems by mishandling, follow the warnings and precautions below during maintenance work. WARNING Some parts inside the machine are extremely hot immediately after the machine is used. When opening the front cover ASSY or back cover to access any parts inside the machine, never touch the shaded parts shown in the following figures.

  • Page 352: Periodical Replacement Parts

    2. PERIODICAL REPLACEMENT PARTS Preparation Prior to proceeding with the disassembly procedure, (1) Disconnect the following: • AC cord • USB cable (if connected) • LAN cable (if connected) • Line cord (if connected) (2) Remove the following: • Paper tray 1 •...

  • Page 353

    Fuser unit (1) Open the back cover. (2) Push both ribs of the back cover in the direction of the arrows, and remove the two bosses on the outer chute. Note: • Be careful not to damage the ribs inside the back cover. Boss Rear nip release link Back cover...

  • Page 354

    (5) Push the two knobs on the fuser cover, and pull the fuser cover down in the direction of the arrow. (6) Remove the fuser cover from the bosses on the fuser unit, and remove the fuser cover from the machine. Boss Fuser cover Fuser unit...

  • Page 355

    (10) Release the heater harness of the fuser unit from the guide on the main frame R, and disconnect the heater harness from the low-voltage-heater harness. <Frame R side> Guide Heater harness Low-voltage-heater harness Fuser unit Fig. 7-6 Harness routing: Refer to “3.Fuser unit”.

  • Page 356

    (13) Remove the taptite pan B M4x14 screw, and remove the fuser unit from the machine. Note: • Make sure that the front cover is closed when removing the fuser unit. Fuser unit Taptite pan B M4x14 Fig. 7-8 Confidential...

  • Page 357

    Laser unit (1) Open the back cover. (2) Remove the two taptite bind B M4x12 screws from the back side of the side cover L and the side cover R ASSY. Taptite bind B M4x12 Side cover L Back cover Side cover R ASSY Fig.

  • Page 358

    (4) Push the front cover release button, and open the front cover ASSY. (5) Release the eight hooks, and remove the side cover L from the machine. Side cover L Hooks Front cover release button Hooks Hooks Fig. 7-11 (6) Release the nine hooks, and remove the side cover R ASSY from the machine. Hooks Hooks Hooks...

  • Page 359

    (7) Remove the four taptite cup S M3x8 SR screws to remove the ADF earth harness, document scanner earth harness, and main shield cover plate from the machine. The main shield cover plate is not provided for models with a tray capacity of 500 sheets. Therefore, remove the screw securing the ADF earth harness, the screw securing the document scanner earth harness, and screw A.

  • Page 360

    (8) Disconnect the second side CIS flat cable (duplex scanning models only), first side CIS flat cable, ADF cover/document detection sensor harness, second side document scanning position sensor harness, ADF motor harness, document scanner motor harness, panel PCB harness, wireless LAN harness (models with wireless LAN only), USB host harness, speaker harness (models with speaker only), and NCU harness (models with NCU only) from the main PCB ASSY, and release these harnesses from the securing fixtures.

  • Page 361

    (9) Pull out the wireless LAN harness and the USB host harness from the main PCB shield calking ASSY. (10) Remove the screw pan (S/P washer) M3.5x6 DA screw to release the NCU earth harness, and remove the NCU earth harness from the guide on the machine. (11) Remove the four taptite bind B M4x12 screws and the taptite cup S M3x8 SR screw.

  • Page 362

    (13) Disconnect the laser unit flat cable from the laser unit. (14) Remove the four taptite cup S M3x8 SR screws, and remove the laser unit from the machine. Note: • Be careful not to touch the lens of the laser unit. Taptite cup S M3x8 SR Taptite cup S M3x8 SR Laser unit flat cable...

  • Page 363: Mp Paper Feeding Kit

    MP paper feeding kit (1) Push the front cover release button, and open the front cover ASSY. (2) Open the MP roller cover. Release the hook on the MP holder bushing, and slide the MP holder bushing in the direction of arrow 2 to remove it from the machine. (3) Slide the MP roller holder ASSY in the direction of arrow 3 to remove it from the MP separation roller shaft.

  • Page 364: Paper Feeding Kit

    Paper feeding kit 1 Note: • Paper tray 1 (250 sheets, 500 sheets): T1, Paper tray 2 (500 sheets): T2 • The illustration shows paper tray 1 (250 sheets). (1) Remove the two taptite bind B M4x12 screws from the paper tray 1. (2) Lift the plate to remove "A"...

  • Page 365

    (6) Push the T1 lift arm in the direction of arrow 6, and remove the boss on the T1 roller holder ASSY from the T1 lift arm. (7) Turn the T1 roller holder ASSY in the direction of arrow 7a, and slide it in the direction of arrow 7b to remove it from the T1 separation roller shaft.

  • Page 366

    Paper feeding kit 2 (1) Remove the two taptite bind B M4x12 screws from the paper tray 2. (2) Lift the plate to remove "A" on the T2 tray indicator from the plate, remove the four bosses, and then remove the T2 tray cover ASSY from the paper tray 2. Taptite bind B M4x12 Bosses T2 tray cover ASSY...

  • Page 367

    (6) Push the T2 lift arm in the direction of arrow 6a, and remove the boss on the T2 roller holder ASSY from the T2 lift arm. Then turn the T2 roller holder ASSY in the direction of arrow 6b. Boss T2 lift arm T2 roller holder ASSY...

  • Page 368

    APPENDIX SERIAL NUMBERING SYSTEM Confidential...

  • Page 369: Appendix 1 Serial Numbering System

    APPENDIX 1 SERIAL NUMBERING SYSTEM Serial number label (1 location) <How to Read> Serial number Manufacturing line Product Serial number (6-digit) identification code Manufacturing factory No. Year of manufacture 2: 2012 3: 2013 Month of manufacture A : January E : May J : September B : February F : June...

  • Page 370

    APPENDIX DELETING USER SETTING INFORMATION This appendix provides instructions on how to delete user setting information recorded in the machine. Confidential...

  • Page 371: Appendix 2 Deleting User Setting Information

    APPENDIX 2 DELETING USER SETTING INFORMATION The user setting information for the machine is stored in the main PCB. You can delete user setting information following the procedure below. <Operating Procedure> (1) Press the [Menu] button. (2) Press the [ ] or [ ] button to display the "Initial Setup"...

  • Page 372

    APPENDIX INSTALLING MAINTENANCE DRIVER Confidential...

  • Page 373: Appendix 3 Installing Maintenance Driver

    APPENDIX 3 INSTALLING MAINTENANCE DRIVER To identify multiple terminals connected to the computer via USB, the computer needs to configure the corresponding number of virtual USB devices using a driver or software. If you connect multiple machines to your computer, the same number of virtual USB devices will be automatically configured on your computer.

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