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Brother 09055CDN Service Manual

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Table of Contents
Brother Color Laser MFC
MODEL: DCP-9055CDN/9270CDN
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.
August 2010
SM-FAX118
8CE301 (4)

SERVICE MANUAL

MFC-9460CDN/9465CDN
MFC-9560CDW/9970CDW
Confidential

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Table of Contents
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  Summary of Contents for Brother 09055CDN

  • Page 1: Service Manual

    Brother Color Laser MFC SERVICE MANUAL MODEL: DCP-9055CDN/9270CDN MFC-9460CDN/9465CDN MFC-9560CDW/9970CDW Read this manual thoroughly before maintenance work. Keep this manual in a convenient place for quick and easy reference at all times. August 2010 SM-FAX118 8CE301 (4) Confidential...
  • Page 2 TRADEMARKS The Brother logo is a registered trademark of Brother Industries, Ltd. Apple and Macintosh are trademarks of Apple Inc., registered in the United States and other countries. PCL is either a trademark or a registered trademark of Hewlett-Packard Company in the United States and other countries.

  • Page 3: Table Of Contents

    CONTENTS REGULATION ................... I SAFETY INFORMATION ..............VI CHAPTER 1 SPECIFICATIONS 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 .......................... 1-9 1.5.1 Paper handling ....................1-9 1.5.2 Media specifications ..................
  • Page 4 3.1 Error Codes ......................2-17 3.2 Error Messages ......................2-24 3.3 Communications Error Code ..................2-29 3.4 Error Cause and Remedy ..................2-32 3.5 Paper Feeding Problems ..................2-103 3.5.1 No feeding ..................... 2-103 3.5.2 Double feeding ....................2-106 3.5.3 Paper jam ...................... 2-106 3.5.4 Dirt on paper ....................
  • Page 5 3.12.8 Reception mode cannot be changed............2-138 3.12.9 Caller ID are not displayed ................2-138 3.13 Others Problems....................2-139 3.13.1 The machine is not turned ON, or the LCD indication does not appear ..2-139 3.13.2 The fan does not work (Error code 2B, EC) ..........2-139 3.13.3 The USB direct interface does not work (Error code CA, etc) .....
  • Page 6 9.17 Hinge R/Hinge R Support/Hinge Arm R ..............3-77 9.18 Document Stopper....................3-78 9.19 Document Sub Tray....................3-78 9.20 ADF Cover ASSY ....................3-79 9.21 Document Hold ASSY/Earth Spring ............... 3-80 9.22 Gear Cover ......................3-83 9.23 Separate Roller ASSY .................... 3-84 9.24 ADF Spring/Separation Rubber Holder..............
  • Page 7 9.55 Registration Solenoid ASSY ................. 3-163 9.56 Develop Release Sensor PCB ASSY/Mono Solenoid ASSY ....... 3-164 9.57 Fuser Develop Motor ASSY ................. 3-166 9.58 PF Plate ASSY/T1 Solenoid ASSY ..............3-167 9.59 Toner/New Sensor PCB ASSY ................3-169 9.60 Internal Temperature Thermistor ................3-170 9.61 Fuser Fan ......................

  • Page 8: Required After Parts Replacement

    CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT 1. IF YOU REPLACE THE MAIN PCB ASSY ..........4-1 1.1 Rewriting the firmware (Panel firmware, Sub firmware, Main firmware)....4-2 1.1.1 Checking firmware version ................4-2 1.1.2 Rewriting the firmware using computer ............. 4-3 1.1.3 Rewriting the firmware using USB flash memory ..........
  • Page 9 6. IF YOU REPLACE THE DRUM DRIVE MOTOR ........4-12 7. IF YOU REPLACE THE DOCUMENT SCANNER UNIT......4-15 7.1 Acquisition of White Level Data (Maintenance Mode: Code 55) ......4-15 7.2 Scanning and Printing Check ................... 4-15 7.3 Placement of Document Scanner Unit in Position for Transportation (Maintenance Mode: Code 06) .................
  • Page 10 1.4.4 ADF performance test (Function code 08) ............5-11 1.4.5 Monochrome image quality test pattern (Function code 09)......5-12 1.4.6 Worker switch (WSW) setting and printout (Function code 10, 11) ....5-13 1.4.7 Operational check of LCD (Function code 12) ..........5-17 1.4.8 Operational check of control panel button (Function code 13) ......
  • Page 11 CHAPTER 6 CIRCUIT DIAGRAMS & WIRING DIAGRAM 1. CIRCUIT DIAGRAMS.................6-1 2. WIRING DIAGRAM ..................6-9 CHAPTER 7 PERIODICAL MAINTENANCE 1. PRECAUTIONS..................7-1 2. PERIODICAL REPLACEMENT PARTS ............7-2 2.1 Procedures to Replace Periodical Replacement Parts..........7-2 2.1.1 Fuser unit......................7-3 2.1.2 Laser unit......................7-11 2.1.3 Paper feeding kit1....................

  • Page 12: Regulation

    THIS EQUIPMENT IS DESIGNED TO WORK WITH A TWO WIRE ANALOGUE PSTN LINE FITTED WITH THE APPROPRIATE CONNECTOR. Brother advises that this product may not function correctly in a country other than where it was originally purchased, and does not offer any warranty in the event that this product is used on public telecommunication lines in another country.

  • Page 13: Internal Laser Radiation

    ■ 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 document scanner unit.
  • Page 14 ■ EU Directive 2002/96/EC and EN50419 This equipment is marked with the above recycling symbol. It means that at the end of the life of the equipment you must dispose of it separately at an appropriate collection point and not place it in the normal domestic unsorted waste stream.
  • Page 15 Important A shielded interface cable should be used to ensure compliance with the limits for a Class B digital device. Changes or modifications not expressly approved by Brother Industries, Ltd. could void the user’s authority to operate the equipment. Confidential...
  • 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 Buji, Longgang, Shenzhen, China This product complies with FDA performance standards for laser products except for deviations pursuant to Laser Notice No.50, dated June 24, 2007.

  • Page 17: Safety Information

    SAFETY INFORMATION ■ Definitions of Warnings, Cautions, Notes and Memos The following conventions are used in this manual: Mark Contents Warnings tell you what to do to prevent possible personal injury. Electrical Hazard icons alert you to a possible electrical shock. Hot Surface icons warn you not to touch machine parts that are hot.

  • Page 18: Safety Precautions

    ■ Safety Precautions Listed below are the various kinds of “WARNING” messages included in this manual. WARNING There are high voltage electrodes inside the machine. Before you clean the inside of the machine or replace parts, make sure that you have turned off the power switch and unplugged the machine from the AC power outlet.
  • Page 19 WARNING DO NOT touch the shaded parts shown in the illustration. These rollers may be rotating at high speed and can pinch or entrap your hand. Languages on the label may vary depending on your country. DO NOT use flammable substances, any type of spray or any organic solvent/liquids contains alcohol or ammonia to clean the inside or outside of the machine.
  • Page 20 CAUTION Lightning and power surges can damage this product! We recommend that you use a quality surge protection device on the AC power line, or unplug the machine during a lightning storm. Violently closing the front cover without mounting the toner cartridge and the drum unit can damage this product.

  • Page 21: 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 22: Chapter 1 Specifications

    CHAPTER 1 SPECIFICATIONS Confidential...
  • Page 23 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 .......................... 1-9 1.5.1 Paper handling ....................1-9 1.5.2 Media specifications ..................

  • Page 24: Specifications List

    SPECIFICATIONS LIST General Model DCP-9055CDN DCP-9270CDN Print method Electrophotographic Laser beam printer (Single-pass) Resolution 600 x 600 dpi, 2,400 dpi (2400 x 600) quality Print speed One-sided Monochrome & Full Color: Up to Monochrome & Full Color: Up 24/25 ppm (A4/Letter size) to 28/30 ppm (A4/Letter size) * When loading A4 or Letter size paper from the paper tray.
  • Page 25 Model DCP-9055CDN DCP-9270CDN Weights With Carton 32.0 kg / 70.5 lb 34.0kg / 75.0 lb Without 26.5kg / 58.4 lb 30.0kg / 66.1 lb Carton, With toner/ drum Without 21.0kg / 46.3 lb 23.0kg / 50.7 lb Carton and toner/drum LCD Size Except for China: 5 inch...
  • Page 26 Model MFC-9460CDN MFC-9465CDN MFC-9560CDW MFC-9970CDW Noise Level Sound Printing: 57 dB (A) pressure Ready: 33 dB (A) Sound power Printing (Mono): 6.74 B (A) Printing Printing (Color): 6.82 B (A) (Mono): Ready: 4.8 B (A) 6.88 B (A) Printing (Color): 6.94 B (A) Ready: 4.8 B (A)

  • Page 27: Computer Requirements

    <Computer requirements> Available Hard Disk Supported Recom- Space Computer platform & Processor Minimum mended operating system version Speed Interface Drivers Applications ® ® ® Windows Windows Intel 64 MB 256 MB 150 MB 500 MB USB, ® Operating 2000 Profes- Pentium 10BASE- System...
  • Page 28 Mac OS X Intel Wireless 10.6.x Core 802.11 Processor For WIA, 1200 x 1200 resolution. Brother Scanner Utility enables to enhance up to 19200 x 19200 dpi. Third-party USB ports are not supported. ® ® PaperPort 11SE supports Microsoft SP4 or higher for Windows 2000.

  • Page 29: Network Connectivity

    Network Connectivity Model DCP-9055CDN DCP-9270CDN Wired Network node NC-6900h type2 network type Network type 10BASE-T/100BASE-TX Ethernet Network APOP, POP before SMTP, SMTP-AUTH, security SSL/TLS (IPPS, HTTPS, SMTP, POP), SNMP v3, 802.1x (EAP-MD5, EAP-FAST, PEAP, EAP-TLS, EAP-TTLS), Kerberos Wireless Network node network type RF channels...

  • Page 30: Service Information

    Service Information Part Approximate life Machine life Approximately 200,000 pages (A4/Letter) or 5 years Machine life (ADF) 50,000 pages or 5 years Machine life 50,000 pages or 5 years (Document scanner unit) MTBF 4,000 hours MTTR 0.5 hours Maximum monthly print Touch panel model: 60,000 pages volume Non Touch panel model: 40,000 pages...

  • Page 31: Supplies

    Supplies Consumables Approximate life Starter Toner Black: Approximately 2,500 pages/cartridge Toner Yellow, Magenta, Cyan: cartridge Approximately 1,500 pages/cartridge Standard Toner Black: Approximately 2,500 pages/cartridge Yellow, Magenta, Cyan: Approximately 1,500 pages/cartridge High Capacity Black (For Europe): Approximately 4,000 pages/cartridge Toner Black (Except for Europe): N/A Yellow, Magenta, Cyan : Approximately 3,500 pages/cartridge Super High...

  • Page 32: Paper

    Paper 1.5.1 Paper handling Model All models Paper tray 1 250 sheets Paper Input Paper tray 2 500 sheets MP tray 50 sheets Legal model: 50 sheets A4 model: 35 sheets Paper Face-down 150 sheets Output Face-up 1 sheet (Straight paper path) Auto Duplex Specifications are subject to change without notice.

  • Page 33: Unprintable Area

    Unprintable Area Portrait Landscape ® Windows printer driver and Macintosh printer driver ® BRScript printer driver for Windows and Macintosh 4.23 mm (0.16 inch) 4.23 mm (0.16 inch) Note: The area that cannot be printed on may vary depending on the paper size and the printer driver you are using.

  • Page 34: Copy

    Copy Model DCP-9055CDN DCP-9270CDN Copy Speed Monochrome Up to 24/25 cpm (A4/Letter) Up to 28/30 cpm (A4/Letter) simplex Color (FB/ADF) First copy Monochrome Less than 19 seconds out time (from Ready mode and standard Tray) Color Less than 21 seconds (from Ready mode and standard Tray) Resolution (Optical) Up to 1200 (main scanning) x 600 dpi (sub scanning)

  • Page 35: Scanner

    1.10 Scanner Model DCP-9055CDN DCP-9270CDN Resolution Maximum scanning 1,200 (main scanning) x 2,400 dpi (sub (Optical) scanning) Maximum scanning 1,200 (main scanning) x 600 dpi (sub scanning) Resolution (Interpolated) Maximum scanning 19,200 (main scanning) x 19,200 dpi (sub scanning) Scanning Monochrome/ A4: 2.12 seconds A4: 1.79 seconds...

  • Page 36: Unscannable Area

    Specifications are subject to change without notice. Model MFC-9460CDN MFC-9465CDN MFC-9560CDW MFC-9970CDW PictBridge Direct print PDF version1.7, JPEG, Exif+JPEG, PRN(created by own printer driver) TIFF(scanned by Brother model), XPS version 1.0 Specifications are subject to change without notice. 1-13 Confidential...

  • Page 37: Chapter 2 Error Indication And Troubleshooting

    CHAPTER 2 ERROR INDICATION AND TROUBLESHOOTING Confidential...
  • Page 38 CHAPTER 2 ERROR INDICATION AND 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 39 3.8 Network Problems ....................2-127 3.8.1 Cannot make a print through network connection (Error code ED, EE) ..2-127 3.9 Document Feeding Problems ................. 2-128 3.9.1 No feeding ..................... 2-128 3.9.2 Double feeding ....................2-128 3.9.3 Paper jam ...................... 2-129 3.9.4 Wrinkles ......................

  • Page 40: Introduction

    INTRODUCTION Troubleshooting is the countermeasure procedures that the service personnel should follow if an error or malfunction occurs with the machine. It is impossible to anticipate all of the possible troubles which may occur in future and determine the troubleshooting procedures, so this chapter covers some sample troubles.

  • Page 41: Initial Check

    Initial Check Check the following items before attempting to repair the machine. ■ Operating environment (1) Put your machine on a flat, stable surface such as a desk that is free of vibration and shocks. (2) Use the machine in a well-ventilated room; use the machine within the following ranges of °...
  • Page 42 ■ Others (1) Condensation When the machine is moved from a cold place into a warm room, condensation may occur inside the machine, causing various problems as listed below. - Condensation on the surface of optical devices such as the scanner windows, lens, reflecting mirror, and protection glass, etc, may cause light print image.

  • Page 43: Overview

    OVERVIEW Cross-section Drawing ■ Printer part <Back side> Exposure drum (Black) Exposure drum (Magenta) Paper eject roller 3 <Front> Exposure drum (Yellow) Exposure drum (Cyan) Paper eject roller 2 Registration rear actuator Registration roller MP registration front actuator Paper eject roller 1 MP separation roller Paper eject actuator MP paper pick-up roller...
  • Page 44 ■ ADF part (A4 model) <Left side> <Right side> Document front actuator Document pull-in roller Separate roller Second side scanning CIS Separation rubber ADF document support Document pull-in roller holder Second side document hold Flap ADF BC Paper guide ADF open actuator Document feed ADF cover BC roller 1...
  • Page 45 ■ ADF part (Legal model) <Left side> <Right side> Second side scanning CIS Separation rubber Document front actuator Second side Separate roller document hold Document pull-in roller Flap ADF BC ADF cover Document feed Document pull-in roller holder Pinch roller roller 1 ADF document support Document...

  • Page 46: Paper Feeding

    Paper Feeding ■ Printer part <Front> <Back side> DX path Paper eject from the back side. Paper feed from the MP tray. Paper tray 1 path Fig. 2-5 Confidential...
  • Page 47 ■ ADF part (A4 model) <Right side> <Left side> [Face up] Document feed path Fig. 2-6 Confidential...
  • Page 48 ■ ADF part (Legal model) <Left side> <Right side> Document feed path [Face up] Fig. 2-7 Confidential...

  • Page 49: Operation Of Each Part

    Operation of Each Part ■ Printer part Part name Operation T1 paper pick-up roller Feed the paper from the paper tray 1. T1 separation roller, Separate into single sheet from the paper tray 1. T1 separation pad T1 paper edge actuator Detect whether or not the paper tray 1 is installed.
  • Page 50 ■ ADF part Part name Operation Document front actuator Detect whether or not documents are loaded in the ADF document support. ADF open actuator Detect when the ADF cover is opened or closed. Document pull-in roller Feed the documents loaded in the ADF document support. Separate roller, Separate the documents fed by the document pull-in roller into Separation rubber...

  • Page 51: Block Diagram

    Block Diagram Front cover sensor Develop drive motor Toner/New sensor PCB PF drive motor Drum position sensor PCB Drum drive motor Develop release sensor PCB Develop release motor T1 registration front/rear sensor PCB T1 paper pick-up solenoid MP paper empty/registration front sensor PCB MP paper pick-up solenoid T1 paper edge sensor PCB Registration solenoid...

  • Page 52: Components

    Components <A4 model> <Legal model> ADF unit ADF unit Toner cartridge Document scanner unit Panel unit Document scanner unit Joint cover top Joint cover top Panel unit Back cover Drum unit upper Joint cover Joint cover base ASSY base ASSY Belt unit Wireless LAN Wireless LAN...

  • Page 53: Life Of Toner Cartridge And Drum Unit

    Life of Toner Cartridge and Drum Unit ■ Life of toner cartridge <Method of detecting toner life> Toner life can be detected by toner sensor and by rotation rates of the develop roller. “Replace Toner” is displayed on the LCD when the toner sensor detects that toner runs out, or when the number of rotations of the develop roller reaches the cartridge life end.

  • Page 54: Cartridge Life

    <Cartridge life> The cartridge life (at the point of in the figure above), which depends on the upper limit of the number of rotations of the developer roller, varies according to the average number of print pages per job. (See the table below.) The number of printable pages is larger when making continuous prints in one job because deterioration of the developer roller is low.
  • Page 55 ■ Life of drum unit <How to read the drum unit life> - It initially indicates 100% and gradually decreases. - It indicates 10% when the “Replace Parts Drum” appears on the LCD. <How to calculate the drum unit life> The drum unit life is based on the “drum counter”...

  • Page 56: Error Indications

    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 57 Error Refer Error Refer Problem Problem codes codes Internal temperature sensor error. 2-38 Engine PCB transfer error. 2-45 (Communication error between Develop drive motor error. 2-39 the main CPU and sub CPU.) Belt drive motor error. 2-39 PF drive motor error. 2-39 Main PCB DRAM access error.
  • Page 58 Error Refer Error Refer Problem Problem codes codes The black drum unit will reach 2-49 It was detected that the size of 2-53 the end of life soon. the paper was less than the specified value. The yellow drum unit will reach 2-49 the end of life soon.
  • Page 59 Error Refer Error Refer Problem Problem codes codes Fuser unit error. (The center 2-57 Engine PCB error. (detection of 2-60 thermistor does not detect 60 °C PF drive motor lock error.) within the specified time.) Engine PCB error. 2-61 Fuser unit error. (The center 2-57 Communication error between 2-61...
  • Page 60 Error Refer Error Refer Problem Problem codes codes Paper jam occurred around the 2-71 Detection of incorrect registration 2-75 back cover at the time when the sensor measurement value when power was turned ON, or the implementing adjustment of back cover is open. inter-color position alignment.
  • Page 61 Error Refer Error Refer Problem Problem codes codes Scanning resolution change 2-80 Scanning outside light detection 2-84 error in the maintenance mode. error. Scanning failure upon FAX 2-81 White level data error. 2-85 transmission (Second side) Scanning failure upon FAX 2-85 (Document scanner unit failure transmission.
  • Page 62 Error Refer Error Refer Problem Problem codes codes The waste toner box is not 2-91 Read error in EEPROM of the 2-97 installed. laser unit. Waste toner box full. (The 2-91 Fuser fan error. 2-97 sensor detects that the waste Communication with the 2-97 toner is full.)

  • Page 63: 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 Access Error The USB device is taken out while data is 2-140 being processed. Calibrate Incorrect density sensor measurement 2-65...
  • Page 64 Error Refer Error message Description codes Fuser Error Failure in the center thermistor of the fuser 2-57 unit. 2-57 2-57 2-57 2-58 2-60 2-60 Undecodable data is found during printing. 2-127 Ignore Data Undecodable PS data is received. Paper is jammed in the duplex paper feed 2-51 Jam Duplex system.
  • Page 65 Error Refer Error message Description codes The paper tray 1 is not installed before 2-35 No Tray printing. (The cassette of the T1 paper edge sensor is open.) The paper tray 1 is not installed. 2-67 The paper tray 2 is not installed before 2-35 printing.
  • Page 66 Error Refer Error message Description codes Belt unit is at the end of life. 2-53 Replace Belt Unit Parts Drum unit is at the end of life. 2-37 Drum Unit 2-50 Fuser unit is at the end of life. 2-50 Fuser Unit Laser unit is at the end of life.
  • Page 67 Error Refer Error message Description codes USB device overcurrent error. 2-89 Unusable Device Unsupported device. 2-140 The update process cannot be continued 2-140 Unusable File because the data of the program file is incorrect. The waste toner box near full. 2-54 WT Box End Soon (The sensor detected that the waste toner...

  • Page 68: Communications Error Code

    Communications Error Code Code 1 Code 2 Cause Refer to: Wrong number called. 2-138 No dial tone detected before start of dialing. 2-138 Busy tone detected before dialing. 2-138 2nd dial tone not detected. 2-138 No loop current detected. 2-138 Busy tone detected after dialing or called.
  • Page 69 Code 1 Code 2 Cause Refer to: The available memory space of the remote terminal is less 2-138 than that required for reception of the confidential or relay broad-casting instruction. Remote terminal not equipped with color function. 2-138 Illegal coding system requested. 2-138 Illegal recording width requested.
  • Page 70 Code 1 Code 2 Cause Refer to: RTN, PIN, or ERR received at the calling terminal. 2-138 RTN, PIN, or ERR received at the called terminal. 2-138 Receive buffer full during receiving into memory. 2-138 Unable to receive the next-page data. 2-138 Unable to receive polling even during turn-around 2-138...

  • Page 71: Error Cause And Remedy

    Error Cause and Remedy Check the User Check items first. If an error cannot be resolved, follow the procedures in numerical order in the Step field. ■ Error code 0B Touch panel no response error. Error code 0E Touch panel failure upon start-up of the machine. <User Check>...
  • Page 72 ■ Error code 10 (Non Touch panel model) Registration Registration failed. Press Start, and try again. (Touch panel model) Registration failed Press Start, and try again. Inter-color position alignment adjustment failure. (Error, which cannot be recorded, occurs.) Step Cause Remedy Main PCB failure Replace the main PCB ASSY.
  • Page 73 ■ Error code 12 (Non Touch panel model) Registration Registration failed. See Troubleshooting chapter in User’s Guide. (Touch panel model) Registration failed Registration failed. See Troubleshooting chapter in User’s Guide. Inter-color position alignment adjustment failure. (Incorrect measurement value of inter-color position alignment adjustment.) <User Check>...
  • Page 74 ■ Error code 17 (Non Touch panel model) No Tray A Tray is not detected, install Tray #1. (Touch panel model) No Tray The paper tray cannot be detected, re-install Tray#1. The paper tray 1 is not installed before printing. (The cassette of the T1 paper edge sensor is open.) <User Check>...
  • Page 75 ■ Error code 19 Replace Drum Open the Front Cover, replace the Drum Unit. Refer to the User's Guide for instructions. The drum unit reached the end of life. <User Check> - Replace the drum unit and reset the counter. (Refer to “2.2 Parts Life Reset Function”...
  • Page 76 ■ Error code 1B (C) Drum Stop We cannot guarantee the print quality. Replace the Drum Unit. Refer to the User’s Guide for instructions. Error code 1C (M) Drum Stop We cannot guarantee the print quality. Replace the Drum Unit. Refer to the User’s Guide for instructions.
  • Page 77 ■ Error code 20 (K) Print Unable 20 Turn the power off and then back on again. Error code 21 (Y) Print Unable 21 Turn the power off and then back on again. Error code 22 (M) Print Unable 22 Turn the power off and then back on again.
  • Page 78 ■ Error code 25 Print Unable 25 Turn the power off and then back on again. Develop drive motor error. This error does not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. <User Check>...
  • Page 79 ■ Error code 28 Print Unable 28 Turn the power off and then back on again. Drum drive motor error. <User Check> - If paper or any other foreign object is affixed to the exposure roller of the drum, remove it. Step Cause Remedy...
  • Page 80 ■ Error code 2A Print Unable 2A Turn the power off and then back on again. Develop release motor error. <User Check> - Turn OFF the power switch, and turn it ON again after a while. Step Cause Remedy Harness connection failure of Check the harness connection of the develop release motor develop release motor and...
  • Page 81 ■ Error code 2C (K) Print Unable 2C Turn the power off and then back on again. Error code 2D (Y) Print Unable 2D Turn the power off and then back on again. Error code 2E (M) Print Unable 2E Turn the power off and then back on again.
  • Page 82 ■ Error code 31 Print Unable 31 Turn the power off and then back on again. Density sensor error. Step Cause Remedy Harness connection failure of Check the harness connection of the registration mark sensor holder registration mark sensor holder ASSY and ASSY reconnect it.
  • Page 83 ■ Error code 33 Print Unable 33 Turn the power off and then back on again. Registration mark R PCB ASSY error. Error code 34 Print Unable 34 Turn the power off and then back on again. Registration mark L PCB ASSY error. This error does not usually occur in the normal use.
  • Page 84 ■ Error code 37 Print Unable 37 Turn the power off and then back on again. Belt unit temperature sensor error. Step Cause Remedy Harness connection failure of Check the harness connection of the belt belt unit temperature sensor unit temperature sensor and reconnect it. Belt unit temperature sensor Replace the registration mark sensor failure...
  • Page 85 ■ Error code 3B Print Unable 3B Turn the power off and then back on again. Main PCB DRAM access error. Step Cause Remedy Main PCB failure Replace the main PCB ASSY. ■ Error code 3C Print Unable 3C Turn the power off and then back on again. Main PCB error.
  • Page 86 ■ Error code 3F Print Unable 3F Turn the power off and then back on again. Write error in engine firmware. This error does not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. <User Check>...
  • Page 87 ■ Error code 44 (K) No Toner Open the Front Cover, then install Toner Cartridge. Black (K) Error code 45 (Y) No Toner Open the Front Cover, then install Toner Cartridge. Yellow (Y) Error code 46 (M) No Toner Open the Front Cover, then install Toner Cartridge. Magenta (M) Error code 47 (C) No Toner Open the Front Cover, then install Toner Cartridge.
  • Page 88 ■ Error code 48 Replace Drum (K) Black drum unit is at the end of life. Error code 49 Replace Drum (Y) Yellow drum unit is at the end of life. Error code 4A Replace Drum (M) Magenta drum unit is at the end of life. Error code 4B Replace Drum (C) Cyan drum unit is at the end of life.
  • Page 89 ■ Error code 50 Replace Parts Drum Unit Drum unit is at the end of life. Error code 51 Replace Parts PF Kit MP MP paper feeding kit is at the end of life. Error code 52 Replace Parts PF Kit 1 Paper feeding kit1 is at the end of life.
  • Page 90 ■ Error code 56 Cover is Open Close the Fuser Cover which can be found behind the Back Cover of the machine. The fuser cover is open. <User Check> - Close the fuser cover properly. Step Cause Remedy Paper eject actuator catching on Correct the position of the paper eject some position actuator.
  • Page 91 ■ Error code 58 Fuser Error Turn the power off, then on again. Leave the machine for 15 min. Error code 59 Self-Diagnostic Will Automatically Restart within 15 minutes. Fuser unit error. Step Cause Remedy Harness connection failure Check the harness connection between between fuser unit connector and the fuser unit connector and paper eject paper eject sensor PCB ASSY...
  • Page 92 ■ Error code 5B Short paper Open the Back Cover and then press Start. It was detected that the length of the paper under printing was less than the specified value. Error code 5C Small paper Open the Back Cover and then press Start. It was detected that the size of the paper was less than the specified value.
  • Page 93 ■ Error code 5F (Non Touch panel model) WT Box End Soon (Touch panel model) Replace Parts WT Box End Soon The waste toner box near full. (The sensor detected that the waste toner became near full.) <User Check> - Prepare a new waste toner box. Step Cause Remedy...
  • Page 94 ■ Error code 60 (C) (Non Touch panel model) Replace Toner Open the Front Cover, replace Toner Cartridge. Cyan (C) (Touch panel model) Animation is displayed. Error code 61 (M) (Non Touch panel model) Replace Toner Open the Front Cover, replace Toner Cartridge. Magenta (M) (Touch panel model) Animation is displayed.
  • Page 95 ■ Error code 64 (C) Toner Low (C) Prepare New Cyan (C) Toner Cartridge. Error code 65 (M) Toner Low (M) Prepare New Magenta (M) Toner Cartridge. Error code 66 (Y) Toner Low (Y) Prepare New Yellow (Y) Toner Cartridge. Error code 67 (K) Toner Low (K) Prepare New Black (K) Toner Cartridge.
  • Page 96 ■ Error code 6A Print Unable 6A Turn the power off and then back on again. Fuser unit error. (The center thermistor does not detect 60 °C within the specified time.) Error code 6B Print Unable 6B Turn the power off and then back on again. Fuser unit error.
  • Page 97 ■ Error code 6F Print Unable 6F Turn the power off and then back on again. Fuser unit error. (The center and side thermistors detect extremely high temperature.) (Detection of hardware.) Step Cause Remedy Fuser unit connector connection Reconnect the connector of the fuser unit. failure Fuser unit failure Replace the fuser unit.
  • Page 98 ■ Error code 71 Print Unable 71 Turn the power off and then back on again. Laser unit polygon motor error. Error code 72 Print Unable 72 Turn the power off and then back on again. Beam detecting sensor (Black/Yellow) error of the laser unit. Error code 73 Print Unable 73 Turn the power off and then back on again.
  • Page 99 ■ Error code 75 Cooling Down Wait for a while Cooling down the inside of the machine to protect it. <User Check> - Leave the machine for a while as the power remains ON. Step Cause Remedy Internal temperature sensor Replace the internal temperature sensor.
  • Page 100 ■ Error code 7B Print Unable 7B Turn the power off and then back on again. Engine PCB error. Step Cause Remedy Harness connection failure Check the harness connection between between engine PCB and main the engine PCB ASSY and main PCB ASSY, and reconnect it.
  • Page 101 ■ Electrodes location of the drum unit and toner cartridge Erase lamp lens Fig. 2-10 ■ Electrodes location of the belt unit Fig. 2-11 2-62 Confidential...
  • Page 102 ■ Electrodes location of waste toner box Fig. 2-12 ■ Electrodes location of main body Developer roller Charging (Corona wire) Grid Cleaning roller Erase lamp lens Belt transfer roller Paper powder cleaner Belt cleaning roller Waste toner cleaner roller Waste toner cleaner shaft Fig.
  • Page 103 ■ Error code 7E Replace Belt Open the Front Cover, replace the Belt Unit. Belt unit is at the end of life. (The operation is stopped.) <User Check> - Replace the belt unit with a new one and reset the counter. (Refer to “2.2 Parts Life Reset Function”...
  • Page 104 ■ Error code 81 (Non Touch panel model) Calibrate Calibration failed. See Troubleshooting chapter in User's Guide. (Touch panel model) Calibration failed Calibration failed. See Troubleshooting chapter in User's Guide. Incorrect density sensor measurement value when implementing adjustment of color density. Error code 82 (Non Touch panel model) Calibrate...
  • Page 105 ■ Error code 83 Drum Stop Replace the Drum Unit. Refer to the instructions in the carton of new drum. Drum unit error. (An drum error occurred after the drum unit reached the end of life.) <User Check> - Replace the drum unit with a new one and reset the drum counter. (Refer to “2.2 Parts Life Reset Function”...
  • Page 106 ■ Error code 85 (Non Touch panel model) No Tray A Tray is not detected, install #1. (Touch panel model) No Tray The paper tray cannot be detected, re-install Tray#1. The paper tray 1 is not installed. <User Check> - Check if the paper tray 1 is installed into the machine. - Check if the paper is jammed in the paper tray 1.
  • Page 107 ■ Error code 87 (Non Touch panel model) Calibrate Calibration failed. Insufficient Toner for Calibration. (Touch panel model) Calibration failed Calibration failed. Insufficient Toner for Calibration. Toner of the color which is being used reaches the end of life when implementing adjustment of color density.
  • Page 108 ■ Error code 89 Size Error DX Specify the correct paper and press Start. Unsupported paper size is used for duplex printing. <User Check> - Use the A4 or Letter size paper. - Check if the thickness of the paper is 60 to 105 g/m Step Cause Remedy...
  • Page 109 ■ Error code 8B (Non Touch panel model) Jam Tray 2 Remove the jammed paper from Tray 2. (Touch panel model) Animation is displayed. Paper jam in the paper tray 2. <User Check> - Check if the paper is jammed in the paper tray 2. If jammed, remove it. - Check if the paper is loaded into the paper tray 2 correctly.
  • Page 110 ■ Error code 8C (Non Touch panel model) Jam MP Tray Remove the jammed paper from Multi Purpose Tray and press Start. (Touch panel model) Animation is displayed. Paper jam in the MP tray. <User Check> - Check if paper is jammed around the MP tray. If paper is jammed, remove the jammed paper. - Check if the paper is loaded into the MP tray correctly.
  • Page 111 ■ Error code 8E (Non Touch panel model) Registration Registration failed. Press Start, and try again. (Touch panel model) Registration failed Registration failed. Press Start, and try again. Error in the adjustment of inter-color position alignment result when implementing it. <User Check>...
  • Page 112 ■ Error code 90 Size Mismatch Reload correct paper. The paper size of the MP tray does not match that of the print setting. Error code 91 Size Mismatch Reload correct paper. The paper size of the paper tray 1 does not match that of the print setting. Error code 92 Size Mismatch Reload correct paper.
  • Page 113 ■ Error code 97 Size mismatch Reload correct paper. A paper size, which is not supported by the paper tray 1, is specified in the paper size of the data. Error code 98 Size mismatch Reload correct paper. A paper size, which is not supported by the paper tray 2, is specified in the paper size of the data.
  • Page 114 ■ Error code 9D (Non Touch panel model) Registration Registration failed. See Troubleshooting chapter in User's Guide. (Touch panel model) Registration failed Registration failed. See Troubleshooting chapter in User's Guide. Detection of incorrect registration sensor measurement value when implementing adjustment of inter-color position alignment.
  • Page 115 ■ Error code 9F No paper is loaded. Step Cause Remedy Coming off of T1 paper edge Re-assemble the T1 paper edge actuator. actuator Coming off of registration front Re-assemble the registration front actuator actuator. Coming off of MP registration Re-assemble the MP registration front front actuator actuator.
  • Page 116 ■ Error code A1 Cover is Open Close the Front Cover. The front cover is open. <User Check> - Close the front cover properly. Step Cause Remedy Harness connection failure of Check the harness connection of the front cover sensor front cover sensor and reconnect it.
  • Page 117 ■ Error code A3 (Non Touch panel model) Document Jam Clear the scanner jam, then press the Stop Key. (Touch panel model) Animation is displayed. The document first side rear sensor does not detect the leading edge of a document although the document is fed farther than a designated distance.
  • Page 118 ■ Error code A5 Scan Unable Remove the original document. Turn the power off, then on again. Scanning failure upon FAX transmission. (First side) (Document scanner unit failure for the first time.) <User Check> - Turn the power OFF/ON, and try scanning again. Step Cause Remedy...
  • Page 119 ■ Error code A9 Scan Unable A9 An image signal cannot be detected when an image is scanned. Or, an image signal is too dark. Step Cause Remedy Document scanner unit failure Replace the document scanner unit. Main PCB failure Replace the main PCB ASSY.
  • Page 120 ■ Error code AC Scan Unable Remove the original document. Turn the power off, then on again. Scanning failure upon FAX transmission. (Second side) (Document scanner unit failure for the first time.) Step Cause Remedy Second side scanning CIS Replace the second side scanning CIS. failure Main PCB failure Replace the main PCB ASSY.
  • Page 121 ■ Error code AF Scanner Unable AF See Troubleshooting and routine maintenance chapter in User’s Guide. The white tape cannot be detected. Step Cause Remedy White level data failure Perform the acquisition of white level data. (Function code Harness connection failure of Check the harness connection of the document scanner unit document scanner unit and reconnect it.
  • Page 122 ■ Error code B1 Scanner Error Dark level offset data level error for scanning. * This error is indicated on the LCD in the maintenance mode. Error code B2 Scanner Error Gain control data level error for scanning. * This error is indicated on the LCD in the maintenance mode. Error code B3 Scanner Error The scanning area setting left edge detection error.
  • Page 123 ■ Error code B7 Scanner Error A/D converter standard voltage failure; at High side. * This error is indicated on the LCD in the maintenance mode. Error code B8 Scanner Error A/D converter standard voltage failure; at Low side. * This error is indicated on the LCD in the maintenance mode. Step Cause Remedy...
  • Page 124 ■ Error code BB Scanner Error White level data error. * This error is indicated on the LCD in the maintenance mode. Step Cause Remedy White level data failure Perform the acquisition of white level data. (Function code Second side scanning CIS failure Replace the second side scanning CIS.
  • Page 125 ■ Error code BF Scan Unable Document is too long for duplex scanning. Press Stop Key. The document is too long for ADF duplex feeding. <User Check> - When you scan a document longer than the specified size (356.0 mm in length), scan the document by dividing it into several pages using the document scanner unit.
  • Page 126 ■ Error code C4 Tray 2 Error Take out Tray 2 and push it back in firmly. Paper tray 2 pressing plate up/down error. <User Check> - Check if the paper tray 2 is installed into the machine. Step Cause Remedy Harness connection failure of Check the harness connection of the...
  • Page 127 ■ Error code C6 Toner Error One or more Toner Cartridges are not detected. Pull out and reinsert all 4 Toner Cartridges. Pressure engagement/disengagement failure of toner cartridge. <User Check> - Insert the toner cartridge again. Step Cause Remedy Harness connection failure of Check the harness connection of the develop release motor develop release motor and...
  • Page 128 ■ Error code C9 DIMM Error Defective DIMM is installed. <User Check> - Replace the DIMM. Step Cause Remedy Main PCB failure Replace the main PCB ASSY. ■ Error code CA Unusable Device Remove the Device. Turn the power off and back on again. USB device overcurrent error.
  • Page 129 ■ Error code CC No Fuser Unit Install the Fuser Unit. The fuser unit is not installed. This error does not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. <User Check>...
  • Page 130 ■ Error code CE No Waste Toner Install the Waste Toner Box. Refer to the User's Guide for instructions. The waste toner box is not installed. <User Check> - Check if the waste toner box is installed into the machine. - Replace the waste toner box with a new one.
  • Page 131 ■ Error code D0 Touch panel initialization failure. Step Cause Remedy Harness connection failure of Check the harness connection of the LCD unit LCD unit and reconnect it. Touch panel ASSY failure Replace the touch panel ASSY. Main PCB failure Replace the main PCB ASSY.
  • Page 132 Replace the main PCB ASSY. ■ Error code DF Machine Error Unplug machine, then call Brother. FAX communication error of main PCB. This error does not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software.
  • Page 133 ■ Error code E1 Print Unable E1 Turn the power off and then back on again. Program error. Step Cause Remedy Firmware update failure Upload the latest firmware. Main PCB failure Replace the main PCB ASSY. ■ Error code E2 Print Unable E2 Turn the power off and then back on again.
  • Page 134 ■ Error code E4 Run out of paper. This error does not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. <User Check> - Turn OFF the power switch, and turn it ON again after a while.
  • Page 135 ■ Error code E8 The scanned data fails to be recorded in the buffer RAM. This error does not usually occur in the normal use. The conceivable causes are noise around the installation site, fluctuation of the power supply voltage, and failures in the software. <User Check>...
  • Page 136 ■ Error code EB Print Unable EB Turn the power off and then back on again. Read error in EEPROM of the laser unit. Step Cause Remedy Harness connection failure Check the harness connection between between laser unit and main the laser unit and main PCB ASSY, and PCB ASSY reconnect it.
  • Page 137 ■ Error code EE Print Unable EE Turn the power off and then back on again. Unavailability of communication after connecting to the wireless LAN PCB is detected. (Wireless LAN model only) Step Cause Remedy Harness connection failure of Check the harness connection of the wireless LAN PCB wireless LAN PCB and reconnect it.
  • Page 138 ■ Error code F0 Print Unable Turn the power off and then back on again. USB flash memory does not work properly. <User Check> - Replace the USB flash memory. - Turn OFF the power switch, and turn it ON again after a while. Step Cause Remedy...
  • Page 139 ■ Error code F3 Main PCB error. Error code F4 High Temperature Decrease room temperature and humidity to allow the machine to operate. The waste toner box is at the end of life. Error code F5 Main PCB communication error. Error code F6 P.C.I error.
  • Page 140 ■ Error code F9 Machine Error F9 The country code is not entered properly. Step Cause Remedy Power turned OFF while the Re-enter the country code. function code 74 is being (Refer to “1.4.26 Setting by country executed and “PARAMETER (Function code 74) in Chapter 5”.) INIT”...
  • Page 141 ■ Error code FE Calibrate Calibration failed. Press Start, and try again. Detection of incorrect measurement value of density sensor sensitivity calibration. <User Check> - Replace the waste toner box with a new one. - Replace the belt unit with a new one. Step Cause Remedy...

  • Page 142: Paper Feeding Problems

    Paper Feeding Problems Problems related to paper feeding are end user recoverable if following the User Check items. If the same problem occurs again, follow each procedure in the order of the number described in the Step column in the tables below. 3.5.1 No feeding ■...
  • Page 143 ■ Paper fails to be supplied from the paper tray 2 (Error code 27, etc) <User Check> - Check if the Tray Use setting is fixed to other tray. - Check if the paper is loaded into the paper tray 2 correctly. - Check if the size of the paper is smaller than the specifications.
  • Page 144 ■ Paper fails to be supplied from the MP tray (Error code 27, etc) - Check if the Tray Use setting is fixed to other tray. - Check if the paper is loaded into the MP tray correctly. - Check if the thickness of the paper is 60 to 163 g/m Step Cause Remedy...

  • Page 145: Double Feeding

    3.5.2 Double feeding <User Check> - Check if too much paper is not loaded in each paper tray. - Check if paper is properly loaded in each paper tray. - Turn back the paper loaded in the each paper tray or change the orientation of the paper by 180°. - Check if the thickness of the paper is 60 to 105 g/m .
  • Page 146 ■ Paper jam at the paper tray 2 (Error code 8B, etc) <User Check> - Check if the paper is loaded into the paper tray 2 correctly. - Turn back the paper loaded in the paper tray 2 or change the orientation of the paper by 180°. - Adjust the paper guide corresponding to the paper size.
  • Page 147 ■ Paper jam at the MP tray (Error code 8C) <User Check> - Check if the paper is loaded into the MP tray correctly. - Turn back the paper loaded in the MP tray or change the orientation of the paper by 180°. - Adjust the paper guide corresponding to the paper size.
  • Page 148 ■ Paper jam in the back cover and paper eject section (Error code 84, etc.) Step Cause Remedy Foreign object around paper eject Remove the foreign object. Coming off of back flapper ASSY Re-assemble the back flapper ASSY. Paper eject actuator Re-assemble the paper eject actuator.

  • Page 149: Dirt On Paper

    3.5.4 Dirt on paper <User Check> - Check if the paper is loaded into the paper tray correctly. - Turn back the paper loaded in the paper tray or change the orientation of the paper by 180°. - Replace the toner cartridge with a new one. - Replace the waste toner box with a new one.

  • Page 150: Image Defect Troubleshooting

    Image Defect Troubleshooting 3.6.1 Image defect examples Light on the Faulty registration (2-114) Dark (2-114) One color is light (2-113) whole page (2-112) All one color (2-117) Completely blank Poor fixing (2-115) Image distortion (2-116) (2-116) Horizontal stripes (2-119) Dirt on back side of paper (2-117) Vertical streaks (2-118) White vertical streaks on one color image (2-119) White horizontal stripes on one color image (2-120)

  • Page 151: Pitch Indicated In Roller Image

    3.6.2 Pitch indicated in roller image Image defects which occur periodically may be caused by a failure of the roller. By referring to the table below, specify the cause based on the pitch indicated in the image of each roller. Parts name The pitch which appears in the image Developer roller...

  • Page 152: One Color Is Light

    ■ One color is light <User Check> - Open and close the front cover and make print again. - Check the machine’s environment. High temperature and high humidity or low temperature and low humidity conditions can cause this problem. - Wipe the scanner windows of the laser unit with a soft, lint-free cloth. (Refer to Fig.

  • Page 153: Faulty Registration

    ■ Faulty registration Step Cause Remedy Registration rear actuator Correct catching of the registration rear catching on some position actuator. Engine PCB failure Replace the engine PCB ASSY. ■ Dark <User Check> - Check the machine’s environment. High temperature and high humidity or low temperature and low humidity conditions can cause this problem.

  • Page 154: Poor Fixing

    ■ Poor fixing <User Check> - Check if the scanner window of the laser unit is dirty. (Refer to Fig. 2-16 (P2-112)) - Use the specified paper. - Adjust the color calibration from the control panel. - Adjust the auto registration from the control panel. - Check the machine’s environment.

  • Page 155: Image Distortion

    ■ Completely blank <User Check> - Replace the belt unit with a new one. - Replace the toner cartridge or drum unit with a new one. Step Cause Remedy Developing bias voltage Clean the electrodes of the drum unit and conduction failure main body.

  • Page 156: All One Color

    ■ All one color <User Check> - Replace the drum unit with a new one. Memo You can check this image defect with the function code 71. (Refer to “1.4.24 Color test pattern (Function code 71)” in Chapter Step Cause Remedy Corona wire failure Clean the electrodes of the drum unit and...

  • Page 157: Vertical Streaks

    ■ Vertical streaks <User Check> - This problem may occur with noise which is caused by dirt on the corona wire in the drum unit. In this case, clean the corona wire. - Refer to the User’s guide and remove the dirt on the exposure drum using a cotton swab.

  • Page 158: Horizontal Stripes

    ■ Horizontal stripes <User Check> - Clean the inside of the machine and the corona wire in the drum unit. - This symptom might stop occurring after making several prints. If the symptom continues, replace the toner cartridge with a new one. - Replace the drum unit with a new one.

  • Page 159: White Horizontal Stripes On One Color Image

    ■ White horizontal stripes on one color image <User Check> - The problem may disappear by itself. Try printing multiple pages to clear this problem especially if the machine has not been used for a long time. - Replace the toner cartridge with a new one. - The drum unit may be damaged.

  • Page 160: White Spots On One Color Image

    ■ White spots on one color image <User Check> - Check if the fuser fan and low-voltage power supply PCB fan are not blocked. - Toner may be empty. Replace the toner cartridge with a new one. - Refer to the User’s guide and remove the dirt on the exposure drum using a cotton swab. - The drum unit may be damaged.

  • Page 161: One Color Spots Or Dirt

    ■ One color spots or dirt <User Check> - Damp (wet) paper might be used. Try to changing to freshly unopened paper. - Toner may be empty. Replace the toner cartridge with a new one. - Refer to the User’s guide and remove the dirt on the exposure drum using a cotton swab. - The drum unit may be damaged.

  • Page 162: Horizontal Lines

    ■ Downward fogging of solid color <User Check> - Toner may be empty. Replace the toner cartridge with a new one. Step Cause Remedy High-voltage power supply Replace the high-voltage power supply PCB PCB failure ASSY. Engine PCB failure Replace the engine PCB ASSY. Main PCB failure Replace the main PCB ASSY.
  • Page 163 ■ Inter-color position alignment <User Check> - Implement the adjustment of inter-color position alignment from the control panel. - Replace the belt unit with a new one. - Replace the drum unit with a new one. Step Cause Remedy Phase displacement of drum Align the drum phase.

  • Page 164: Hollow Print

    ■ Unstable color density <User Check> - Make a print on a different type of paper. - Replace the belt unit with a new one. - Replace the drum unit with a new one. - Replace the waste toner box with a new one. - Replace the toner cartridge with a new one.

  • Page 165: Print Crease

    ■ Print crease <User Check> - Check the machine’s environment, conditions such as high humidity may cause this situation to occur. - Change the paper to thick paper. - Check if paper is not damp. Step Cause Remedy The pressure of the pressure Change the position of the PR arm covers.

  • Page 166: Software Setting Problems

    Software Setting Problems The end user can solve problems pertaining to software, for instance, print cannot be made from a computer although test print and machine setting print can be made from the machine, by following the User Check items. If the same problem occurs, follow each procedure in the order of the number described in the Step column in the tables below.

  • Page 167: Document Feeding Problems

    Document Feeding Problems 3.9.1 No feeding <User Check> - Load the document all the way, and check that the LCD display is changed. - Check if the number of the documents complies with the specifications in the specification list. Legal model: 50 sheets or less; A4 model: 35 sheets or less - Check if the ADF cover is closed.

  • Page 168: Paper Jam

    3.9.3 Paper jam ■ Paper jam in the ADF cover (Error code A3, etc) <User Check> - Check whether the document is not thinner than the paper specified in specification. - Check whether length does not use paper equal to or less than 147.3 mm. Step Cause Remedy...

  • Page 169: Wrinkles

    ■ Paper jam in the paper eject section Step Cause Remedy Foreign object around paper Remove foreign objects around the paper eject eject, if any. Breakage of the drive gear Replece the drive frame ASSY. Eject roller failure Replece the ADF unit. 3.9.4 Wrinkles <User Check>...

  • Page 170: Scanning Image Defect Troubleshooting

    3.10 Scanning Image Defect Troubleshooting 3.10.1 Image defect examples Light (2-131) Dark (2-132) Faulty registration (2-132) Vertical streaks (2-133) Completely White vertical blank (2-133) streaks (2-133) Fig. 2-20 3.10.2 Troubleshooting image defect ■ Light on the page (Error code BB, BC, etc) <User Check>...
  • Page 171 ■ Faulty registration (Error code B3, B4, BE, BF, etc) <User Check> - Check that the position of the document on the flatbed is correct. - ADF Step Cause Remedy Fine adjustment of scan start Perform the fine adjustment of scan start position misalignment position.
  • Page 172 ■ Completely blank <User Check> - Check if the first side and second side of the document are reversed. Step Cause Remedy CIS unit failure Replace the document scanner unit. Second side scanning CIS Replace the second side scanning CIS. failure Main PCB failure Replace the main PCB ASSY.

  • Page 173: Troubleshooting Of The Control Panel

    3.11 Troubleshooting of the Control Panel 3.11.1 Nothing is displayed on the LCD <User Check> - Verify if the power switch is turned off. - Check if the machine is in the Deep Sleep mode. (Touch panel model) Step Cause Remedy AC cord failure Replace the AC cord.

  • Page 174: Lamp Malfunction

    3.11.3 Lamp malfunction Step Cause Remedy Assembling failure of the Re-assemble the panel unit. panel unit Connection between main Connect the connector between the main PCB and panel PCB PCB ASSY and panel PCB ASSY correctly. Fine adjustment of touch Perform the fine adjustment of touch panel.

  • Page 175: Troubleshooting Of Fax Functions

    3.12 Troubleshooting of FAX Functions 3.12.1 FAX can't send it <User Check> - Verify that the telephone cord is securely inserted into the right socket. - Check the dial mode setting again. Step Cause Remedy Connection between main Connect the connector between the main PCB and NCU PCB PCB ASSY and NCU PCB ASSY correctly.

  • Page 176: Fax Cannot Be Received

    3.12.3 FAX cannot be received. <User Check> - Verify that the telephone cord is securely inserted into the right socket. Step Cause Remedy Connection between main Connect the connector between the main PCB and NCU PCB PCB ASSY and NCU PCB ASSY correctly. NCU PCB failure Replace the NCU PCB ASSY.

  • Page 177: Dialing Function Does Not Switch Between "Tone" And "Pulse

    3.12.6 Dialing function does not switch between “Tone” and “Pulse” Step Cause Remedy Connection between main Connect the connector between the main PCB and NCU PCB PCB ASSY and NCU PCB ASSY correctly. NCU PCB failure Replace the NCU PCB ASSY. Main PCB failure Replace the main PCB ASSY.

  • Page 178: Others Problems

    3.13 Others Problems 3.13.1 The machine is not turned ON, or the LCD indication does not appear Step Cause Remedy AC cord failure Replace the AC cord. Harness connection failure of Reconnect the panel PCB ASSY harness. panel PCB ASSY Harness connection failure of Reconnect the LCD harness.

  • Page 179: The Usb Direct Interface Does Not Work (Error Code Ca, Etc)

    3.13.3 The USB direct interface does not work (Error code CA, etc) <User Check> - Check if the data is supported device. - Replace the USB flash memory and check if the interface works. - Turn OFF and ON the power. - Reduce the data in the USB flash memory.

  • Page 180: Disassembly And Assembly

    CHAPTER 3 DISASSEMBLY AND ASSEMBLY Confidential...
  • Page 181 CHAPTER 3 DISASSEMBLY AND ASSEMBLY This chapter describes procedures for disassembling and assembling the machine with relates notes. The provided disassembly order flow enables you to take in the quickest way to get an involved 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 182 9.15 ADF Unit ......................... 3-64 9.16 Hinge ASSY L......................3-76 9.17 Hinge R/Hinge R Support/Hinge Arm R ..............3-77 9.18 Document Stopper....................3-78 9.19 Document Sub Tray....................3-78 9.20 ADF Cover ASSY ....................3-79 9.21 Document Hold ASSY/Earth Spring ............... 3-80 9.22 Gear Cover ......................
  • Page 183 9.53 Drum Drive Motor ....................3-159 9.54 Drum Position Sensor PCB ASSY................ 3-162 9.55 Registration Solenoid ASSY ................. 3-163 9.56 Develop Release Sensor PCB ASSY/Mono Solenoid ASSY ....... 3-164 9.57 Fuser Develop Motor ASSY ................. 3-166 9.58 PF Plate ASSY/T1 Solenoid ASSY ..............3-167 9.59 Toner/New Sensor PCB ASSY ................

  • Page 184: Safety Precautions

    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 or back cover to access any parts inside the machine, never touch the shaded parts shown in the following figures.

  • Page 185: Packing

    PACKING <A4 model> <Legal model> Carton upper Quick set up guide CD User’s guide AC cord bag ASSY Carton option Quick set up guide AC cord bag ASSY CD User’s guide Polystyrene Polystyrene pad R pad L Carton option Polystyrene pad R Polystyrene pad L Machine...

  • Page 186: Screw Catalogue

    SCREW CATALOGUE Taptite bind B Taptite flat B Taptite flat B Taptite bind B M3x10 M3x8 Screw bind Taptite bind B M3x10 Screw bind M3x4 Taptite bind B M3x12 Shoulder screw Taptite bind B Shoulder screw M4x12 Taptite pan Taptite bind S Taptite bind S Taptite pan B M4x14 M3x6...

  • Page 187: Screw Torque List

    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) Fuser cover L Taptite bind S M3x8 0.70±0.10 (7±1) Fuser cover R Taptite bind S M3x8 0.70±0.10 (7±1) Fuser unit...
  • Page 188 Tightening torque Location of screw Screw type Q' ty N•m(kgf•cm) Joint cover base ASSY Taptite cup S M3x8 0.70±0.10 (7±1) Taptite bind B M4x12 0.80±0.10 (8±1) Main PCB ASSY Taptite cup S M3x6 SR 0.70±0.10 (7±1) Engine PCB ASSY Taptite cup S M3x6 SR 0.70±0.10 (7±1) Main shield plate Taptite cup S M3x6 SR...
  • Page 189 Tightening torque Location of screw Screw type Q' ty N•m(kgf•cm) T1 registration front/rear sensor Taptite bind B M3x10 0.50±0.10 (5±1) PCB holder MP sector solenoid Taptite bind B M3x8 0.40±0.10 (4±1) MP drive frame Taptite bind B M3x10 0.50±0.10 (5±1) High-voltage power supply Taptite cup S M3x6 SR 0.50±0.10 (5±1)

  • Page 190: Lubrication

    LUBRICATION The kind of the lubricating oil Lubrication point Quantity of lubrication (Maker name) MOLYKOTE PG-661 (W) ER shaft bush 1 mm dia. ball (Dow Corning) BDX313 (A) (Kanto Kasei) Hinge ASSY L 2 mm dia. ball BDX2 FLOIL GE-676 (Kanto Kasei) Separate roller shaft 1.5 mm dia.
  • Page 191 1 place GE1.5 Separate roller shaft Conductive bush 1 place GE1.5 Retaining ring E5 3 mm GE1.5: FLOIL GE-676 (1.5 mm dia. ball) 1 place GE1.5 Document feed roller shaft Conductive bush 1 place GE1.5 Retaining ring E5 3 mm GE1.5: FLOIL GE-676 (1.5 mm dia.

  • Page 192: Overview Of Gears

    OVERVIEW OF GEARS When ordering spare parts, please refer to Parts reference list. ■ Top drive ASSY <Layout view> <Development view> <Name of gears> LY0192 Develop joint gear Z48 LY0213 Gear Z60 LY0196 Drum coupling gear Z52 LY0217 Gear Z50 LY0197 Drum double idle gear Z64-26 LY0214...
  • Page 193 ■ PF ASSY <Layout view> <Development view> <Name of gears> LU5132 Registration gear LY0298 Registration/Pinch roller gear bush LY0299 Pinch roller drive gear * These parts are subject to change without notice. 3-10 Confidential...

  • Page 194: Harness Routing

    HARNESS ROUTING Laser Unit Laser unit “b” Front “c” Clamp Upper cable rack “a” “c” “b” Hole Panel cable rack “c” “b” Hole Upper cable rack Panel cable rack Hook CN15 “a” CN19 CN25 Hook Front Engine PCB ASSY Main PCB ASSY 3-11 Confidential...
  • Page 195 Develop Release Motor Develop release motor Panel cable rack Hook CN20 Front Engine PCB ASSY Front Cover Sensor Panel cable rack Front cover sensor Hook CN14 Hook Front Engine PCB ASSY 3-12 Confidential...
  • Page 196 Top Drive ASSY Develop release “d” sensor PCB ASSY Mono solenoid ASSY Hook “c” Hook Hook “a” “e” “b” Hook Hook Top Drive ASSY (back side) Front Drum position sensor PCB ASSY Registration solenoid ASSY Develop FFC holder “e” Fuser develop Hook motor ASSY Ferrite core...
  • Page 197 PF Plate ASSY Engine PCB ASSY Hook PF line holder Hook Hook Front Hook T1 solenoid ASSY PF plate ASSY PF cleaner drive ASSY Toner/New Sensor PCB ASSY Hook Panel cable rack Hook Hook CN16 Toner/New sensor PCB ASSY Front Engine PCB ASSY 3-14 Confidential...
  • Page 198 Low-voltage Power Supply PCB ASSY Low-voltage power supply cover Paper eject sensor PCB ASSY “a” Low-voltage power supply PCB ASSY “b” “c” Front Lower cable rack Engine PCB ASSY Main PCB ASSY Hook CN24 CN23 “a” “c” Lower cable rack Top drive ASSY “b”...

  • Page 199: Paper Eject Assy

    Paper Eject ASSY High-voltage power supply PCB ASSY (for CN1,CN2) “c2” “c1” Hook Hook Ferrite core Back cover sensor ASSY Paper eject ASSY Front Ferrite core “b” Hook “c2” “a” Paper eject “c1” “c2” motor “c1” “b” “a” “b” <Top view> “a”...
  • Page 200 Registration Mark Sensor Holder ASSY Front Shutter solenoid High-voltage power supply PCB ASSY Hook Hole Registration mark sensor holder ASSY Hook Lower cable rack Front “a” Ferrite core “b” Main PCB ASSY Ferrite core CN26 CN25 CN27 Lower cable rack “b”...
  • Page 201 MP Paper Empty/Registration Front Sensor PCB ASSY MP upper cover ASSY MP paper empty/ registration front Registration/Pinch sensor PCB ASSY roller gear bush Front MP paper empty/ registration front sensor PCB ASSY Registration/Pinch roller gear bush Engine PCB ASSY Hook CN12 Hook MP upper cover ASSY...
  • Page 202 PF ASSY T1 registration T1 paper edge sensor front/rear sensor PCB ASSY PCB ASSY PF ASSY T1 registration front/rear sensor PCB ASSY T1 paper edge sensor Front PCB ASSY MP sector solenoid Hook “a” Hole Engine PCB ASSY “a” “b” “c”...
  • Page 203 ADF (A4 model) <Duplex scanning model only> Front Front Second side scanning CIS ADF unit Upper document chute ASSY Hole Hole Drive frame ASSY Document cover ASSY Document Hole scanner unit ADF harness Front Hole ADF unit Second side scanning Slit CIS flat cable FFC holder ASSY...
  • Page 204 ADF (Legal model) Front Front Second side scanning CIS ADF unit Upper document chute ASSY Hole Hole Drive frame ASSY Document cover ASSY Hole Document scanner unit ADF harness Front ADF unit Second side scanning CIS flat cable FFC holder ASSY Joint cover top Hook Hole...
  • Page 205 Document Scanner Unit (A4 model) Document scanner unit Document scanner unit Hook Hole Document scanner unit flat cable Joint cover top Joint film Ferrite core Joint cover top Hook Ferrite core FB harness unit Main PCB ASSY Main PCB ASSY Front Front 3-22...
  • Page 206 Document Scanner Unit (Legal model) Document scanner unit Document scanner unit Hook FB harness unit Joint cover top Joint cover top Document scanner unit flat cable Hook Ferrite core Hole Hole Main PCB ASSY Front Front Main PCB ASSY 3-23 Confidential...
  • Page 207 Panel Unit (A4 model) Panel unit Document scanner unit Hole Hook Panel key harness ASSY Front Main PCB Panel Unit (Legal model) Panel unit Document scanner unit Hook Panel key harness ASSY Front Main PCB ASSY 3-24 Confidential...
  • Page 208 NCU (A4 model) NCU ASSY NCU harness ASSY Back cover upper NCU FG harness ASSY Joint cover base ASSY Hook Hook Main PCB ASSY Front Hook NCU (Legal model) NCU ASSY Hole NCU harness ASSY Joint cover top NCU harness ASSY NCU FG harness ASSY Hook...
  • Page 209 Joint cover base ASSY Front Joint cover Main USB host harness ASSY Main PCB ASSY USB host relay PCB ASSY Hole Panel cable Front Hook Hook holder Hook CN11 Lock plate Wireless LAN PCB Hook Joint cover base ASSY Front Wireless LAN PCB Main PCB ASSY...
  • Page 210 Speaker Joint cover base ASSY Hook Main PCB ASSY Speaker unit Hook Hook CN10 Front Internal Temperature Thermistor Main PCB ASSY Hook Internal Internal temperature temperature thermistor thermistor CN21 Internal temperature thermistor Hook Lower cable rack Hook 3-27 Confidential...

  • Page 211: Disassembly Flow

    DISASSEMBLY FLOW Disassembly / Re-Assembly (second) 3-28 Confidential...
  • Page 212 Disassembly / Re-Assembly (second) 3-29 Confidential...

  • Page 213: Disassembly Procedure

    DISASSEMBLY PROCEDURE Note: If the disassembly procedure is common, the figures for the A4 model are used. ■ Preparation <Transferring Received FAX Data> When the machine at the user site requires to be repaired, unplugging the power cord from the electrical outlet for sending the machine for repair will lose received FAX data if left in the machine.
  • Page 214 <Disconnecting Cables and Removing Accessories> Prior to proceeding with the disassembly procedure, (1) Unplug - the AC cord, - the USB cable, if connected, - the LAN cable, if connected, and - USB flash memory drive, if connected. - LAN port cap (2) Remove - the Paper tray, - the Toner cartridge,...

  • Page 215: Paper Tray

    Paper Tray (1) Release the Hook to remove the T1 separation pad holder ASSY from the Paper tray. T1 separation pad holder ASSY “A” Paper tray “B” Hook Fig. 3-1 Assembling Note: Mount the T1 separation pad holder ASSY in a way that “A” of the T1 separation pad holder ASSY is inserted into “B”...

  • Page 216: Back Cover/Back Cover Stopper Arm L/R

    Back Cover/Back Cover Stopper Arm L/R (1) Open the Back cover. Main body Back cover <Back side> Fig. 3-3 (2) Remove the Back cover stopper arm L and R from the Main body. Main body Back cover stopper arm L Back cover stopper arm L Back cover stopper arm R <Back side>...
  • Page 217 (3) Remove the Shaft of the Back cover from the Bush on the right side of the Main body. Main body Bush Shaft Back cover <Back side> Fig. 3-5 (4) Remove the Back cover. Main body Back cover <Back side> Fig.
  • Page 218 (5) Remove the Back cover stopper arm L and R from the Back cover. Back cover stopper arm L Back cover Back cover stopper arm R Back cover stopper arm R Back cover Center Fig. 3-7 3-35 Confidential...

  • Page 219: Fuser Cover

    Fuser Cover (1) Open the Back flapper ASSY. Main body Back flapper ASSY <Back side> Fig. 3-8 (2) Release of the Fuser cover lock lever L and R and open the Fuser cover ASSY. Main body Fuser cover lock lever L Fuser cover Fuser cover lock lever R <Back side>...
  • Page 220 (3) Remove the Taptite bind S M3x8 screw from the Fuser cover L. (4) Release the Hook to remove the Fuser cover L from the Main body. Main body Fuser cover L Taptite bind S M3x8 Hook <Back side> Fig. 3-10 (5) Slide the Fuser cover in the direction of the arrow 5a to remove it to the front.

  • Page 221: Fuser Unit

    Fuser Unit (1) Remove the Taptite bind S M3x8 screw from the Fuser cover R. (2) Release the Hook to remove the Fuser cover R from the Main body. <Back side> Hook Main body Fuser cover R Taptite bind S M3x8 Fig.
  • Page 222 (4) Disconnect the Electrode terminal from the Fuser unit. Electrode terminal (small) Fuser unit Electrode terminal (large) Fig. 3-14 (5) Remove the two Taptite pan B M4x14 screws to remove the Fuser unit from the Main body. Main body Taptite pan B M4x14 Fuser unit <Back side>...
  • Page 223 Note: - Do not apply a physical impact or vibration to the Fuser unit. - Do not touch the roller and electrodes as shown in the figure below to prevent breakage of the Fuser unit. Fuser unit Fig. 3-16 3-40 Confidential...

  • Page 224: Side Cover L/Access Cover

    Side Cover L/Access Cover (1) Remove the Cord hook. Cord hook Side cover L Cord hook <Back side> Fig. 3-17 (2) Open the Front cover. Main body Front cover <Front> Fig. 3-18 3-41 Confidential...
  • Page 225 (3) Remove the Taptite bind S M3x8 screw from the front of the Side cover L. (4) Remove the Taptite bind B M4x12 screw from the side of the Side cover L. Taptite bind S M3x8 Taptite bind B M4x12 <Front>...
  • Page 226 ■ A4 model (6) Release the Hooks 1 and 2 at the same time, and then release the Hooks 3 to 6 in numerical order. Release the Hook 7. Release the Hooks 8 and 9 to remove the Side cover L from the Main body. Hook 9 Hook 6 Main body...
  • Page 227 ■ Legal model (6) Release the Hooks 1 and 2 at the same time, and then release the Hooks 3 to 6 in numerical order. Release the Hook 7. Release the Hook 8 to remove the Side cover L from the Main body. Hook 8 Hook 8 Hook 6...
  • Page 228 (7) Remove the two Taptite bind B M4x12 screws from the Side cover L. Taptite bind B M4x12 Side cover L Fig. 3-25 (8) Release the ten Hooks and two Bosses. Remove the Side cover L upper from the Side cover L.
  • Page 229 (9) Remove the Access cover from the Side cover L. (A4 model/Legal model) Access cover Side cover L Fig. 3-27 3-46 Confidential...

  • Page 230: Side Cover R Assy

    Side Cover R ASSY (1) Removee the Cord hook. Cord hook Cord hook Side cover R ASSY <Back side> Fig. 3-28 (2) Remove the Taptite bind S M3x8 screw from the front of the Side cover R ASSY. (3) Remove the Taptite bind B M4x12 screw from the side of the Side cover R ASSY. Side cover R ASSY Taptite bind S M3x8 Taptite bind B M4x12...
  • Page 231 (4) Remove the two Taptite bind S M3x8 screws from the back of the Side cover R ASSY. Taptite bind S M3x8 Side cover R ASSY <Back side> Fig. 3-30 ■ A4 model (5) Release the Hooks 1 and 2 at the same time, and then release the Hooks 3 to 6 in numerical order.
  • Page 232 * Inside of Side cover R ASSY Hook 8 Hook 8 Hook 7 Hook 9 Hook 5 Hook 6 Side cover R ASSY Hook 1 <Back> <Front> Hook 3 Hook 4 Hook 2 Fig. 3-32 ■ Legal model (5) Release the Hooks 1 and 2 at the same time, and then release the Hooks 3 to 6 in numerical order.
  • Page 233 * Inside of Side cover R ASSY Hook 8 Hook 8 Hook 8 Hook 7 Hook 5 Hook 6 Side cover R ASSY Hook 1 <Back> <Front> Hook 4 Hook 3 Hook 2 Fig. 3-34 (6) Remove the two Taptite bind B M4x12 screws from the Side cover R ASSY. Taptite bind B M4x12 Side cover R ASSY Fig.

  • Page 234: Duplex Feed Assy

    (7) Release the ten Hooks and two Bosses. Remove the Side cover R upper from the Side cover R ASSY. Hook Hook Boss Hook 2 Hook Hook 3 Side cover R ASSY Hook 1 Boss Hook 1 Hook Hook Boss Hook 3 Hook Boss...

  • Page 235: Mp Cover Assy/Mp Paper Guide Assy

    MP Cover ASSY/MP Paper Guide ASSY (1) Close the Front cover. (2) Open the MP cover ASSY. Front cover MP cover ASSY <Front> Fig. 3-38 (3) Remove the Pin of the MP link L and R from the MP cover ASSY. MP link R MP cover ASSY MP link...
  • Page 236 (4) Remove the Pin of the MP link L and R from the MP paper guide ASSY. <Front> MP link R MP paper guide ASSY MP paper guide ASSY MP link L MP cover ASSY MP link L/R Fig. 3-40 (5) Slide the MP paper guide ASSY in the direction of the arrow to remove from MP cover ASSY.

  • Page 237: Mp Link L/R

    (6) Remove the two Pins to remove the MP cover ASSY from the Front cover. Front cover MP cover ASSY <Front> Fig. 3-42 MP Link L/R (1) Remove the MP link L and R from the Front cover. Front cover MP link L MP link R MP link L...

  • Page 238: Front Cover Arm L/R

    9.10 Front Cover Arm L/R (1) Open the Front cover. (2) Release the Hook to remove the Forced develop release link from the Front cover. Hook Forced develop release link Forced develop release link Front cover <Front> Fig. 3-44 (3) Release the Hook to remove the Joint release link from the Front cover. Hook Joint release link Joint release link...
  • Page 239 (4) Remove the Front cover from the Main body. Boss Main body Boss Front cover arm R Boss Boss Front cover arm L Front cover <Front> Fig. 3-46 (5) Remove the Taptite bind B M4x12 screw from the Front cover arm L. Front cover arm L Taptite bind B M4x12 Front cover...
  • Page 240 (6) Release the Hook to remove the Front cover arm L from the Front cover. Front cover arm L Hook Front cover Fig. 3-48 (7) Remove the Taptite bind B M4x12 screw from the Front cover arm R. Taptite bind B M4x12 Front cover arm R Front cover Fig.
  • Page 241 (8) Release the Hook to remove the Front cover arm R from the Front cover. Front cover arm R Hook Front cover Fig. 3-50 3-58 Confidential...

  • Page 242: Front Cover Release Button/Front Cover Release Button Spring

    9.11 Front Cover Release Button/Front Cover Release Button Spring (1) Fasten the Hook of the Front cover release button to the Rib of the Front cover. Hook Front cover release button Front cover release button Front cover Fig. 3-51 (2) Tilt the Front cover release button in the direction of the arrow 2. (3) Slide it in the direction of the arrow 3 to remove the shaft, and then remove the Front cover release button from the Front cover.
  • Page 243 (4) Remove the Front cover release button spring from the Front cover release button. Front cover release button Front cover release button spring Fig. 3-53 Assembling Note: When assembling the Front cover release button spring, assemble “A” and “B” as shown in the figure.

  • Page 244: Paper Stopper

    9.12 Paper Stopper Memo: Follow the procedure (2) only in the case of the Legal model. (1) Open the Document scanner unit. Document scanner unit Main body <Front> Fig. 3-55 (2) Remove the two Pins to remove the Paper stopper from the Joint cover top. Paper stopper Joint cover top <Front>...

  • Page 245: Pull Arm L/Pull Arm R/Pull Arm Spring (A4 Model Only)

    9.13 Pull Arm L/Pull Arm R/Pull Arm Spring (A4 Model Only) (1) Open the Pull arm L and Pull arm R to release the Hooks from the joint of the Document scanner unit. Hook Document scanner unit Hook Pull arm R Pull arm L <Front>...

  • Page 246: Back Cover Upper (Legal Model Only)

    9.14 Back Cover Upper (Legal Model Only) (1) Remove the two Taptite bind B M4x12 screws from the Back cover upper. (2) Release the four Hooks to remove the Back cover upper from the Main body. Main body Hook Taptite bind B M4x12 Back cover upper Hook Taptite bind B M4x12...

  • Page 247: Adf Unit

    9.15 ADF Unit (1) Remove the Ferrite core 1 from the FFC film. (A4 model only) Ferrite core 1 FFC film FFC film Document scanner unit flat cable Ferrite core 1 Main shield cover plate ASSY Fig. 3-60 (2) Remove the seven Taptite cup S M3x6 SR screws to remove the Main shield cover plate ASSY from the Main body.
  • Page 248 (3) Remove one Taptite cup S M3x6 SR screw each for the FB FG harness ASSY and ADF FG harness ASSY to remove them from the Main body. FB FG harness ASSY ADF FG harness ASSY Taptite cup S M3x6 SR Main body Taptite cup S M3x6 SR Fig.
  • Page 249 ■ A4 model (5) Open the Document scanner unit. Remove the Ferrite core 1 from the Document scanner unit flat cable. Document scanner unit Document scanner unit flat cable Main body Ferrite core 1 Document scanner Ferrite core 1 unit flat cable Fig.
  • Page 250 (7) Remove the Harness from the Hook to take it out from the Hole in the Joint cover top. (8) Take out the FB FG harness ASSY and ADF FG harness ASSY from the Hole in the Joint cover top. ADF FG harness ASSY Hole FB FG...
  • Page 251 (10) Remove the two Taptite bind B M4x12 screws. ADF unit Document scanner unit Taptite bind B M4x12 Fig. 3-68 (11) Open the ADF unit. (12) Lift the ADF unit until the Hinge ASSY L and Hinge R are removed from the Document scanner unit.
  • Page 252 (13) Release the three Hooks to remove the FFC holder ASSY from the Document scanner unit. ADF unit Document scanner unit FFC holder ASSY Harness Second side CIS flat cable FFC holder ASSY Hook Hook Fig. 3-70 Assembling Note: When the Document scanner unit is replaced, be sure to fold and assemble the Document scanner unit flat cable as shown in the figure.
  • Page 253 ■ Legal model (5) Disconnect the wiring of the Second side scanning CIS flat cable from the Main body. Film Second side scanning CIS flat cable Flat core Main body <Left side> Fig. 3-72 Assembling Note: When attaching the Second side scanning CIS flat cable, be sure to attach the Film as shown in the figure below.
  • Page 254 (6) Remove the Flat core and Film. Main body Film <Left side> Flat core Fig. 3-74 (7) Remove the two Taptite bind B M4x12 screws and Taptite cup S M3x6 SR screw from the right side of the Main body. Some products are not equipped with the Ground plate. In that case, there is no need to remove the Taptite cup S M3x6 SR screw.
  • Page 255 (8) Remove the two Taptite bind B M4x12 screws and Taptite cup S M3x6 SR screw from the left side of the Main body. Main body Taptite bind B M4x12 <Left side> Taptite cup S M3x6 SR Fig. 3-76 (9) Remove the two Taptite bind B M4x12 screws from the back of the Main body. Main body Taptite bind B M4x12 <Back side>...
  • Page 256 (10) Release the eight Hooks to remove the Document scanner unit from the Main body. Hook Hook Hook Document scanner unit Hook Document Hook scanner unit Main body Hook Main body Fig. 3-78 (11) Take out the Document scanner unit flat cable from the Flat core of the Main body as lifting the Document scanner unit.
  • Page 257 (12) Remove the two Taptite bind B M4x12 screws. ADF unit Document scanner unit Taptite bind B M4x12 Fig. 3-80 (13) Open the ADF unit. (14) Lift the ADF unit until the Hinge ASSY L and Hinge R are removed from the Document scanner unit.
  • Page 258 (15) Release the three Hooks to remove the FFC holder ASSY from the Document scanner unit. ADF unit Document scanner unit FFC holder ASSY Harness Second side scanning CIS flat cable FFC holder ASSY Hook Hook Fig. 3-82 Assembling Note: When the Document scanner unit is replaced, be sure to fold and assemble the Document scanner unit flat cable as shown in the figure.

  • Page 259: Hinge Assy L

    9.16 Hinge ASSY L (1) Turn the ADF unit upside down. (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 Taptite cup S M3x12 ADF unit Fig.

  • Page 260: Hinge R/Hinge R Support/Hinge Arm R

    9.17 Hinge R/Hinge R Support/Hinge Arm R (1) Remove the Taptite cup B M3x10 screw to remove the Hinge R and Hinge R support from the ADF unit. Hinge R Hinge R support Taptite cup B M3x10 ADF unit Fig. 3-85 (2) Remove the three Taptite cup B M3x10 screws to remove the Hinge arm R from the ADF unit.

  • Page 261: Document Stopper

    9.18 Document Stopper (1) Return the ADF unit to the original position. (2) Remove the two Pins to remove the Document stopper from the ADF unit. Document stopper ADF unit Fig. 3-87 9.19 Document Sub Tray (1) Open the Document sub tray. (2) Remove the two Pins to remove the Document sub tray from the ADF unit.

  • Page 262: Adf Cover Assy

    9.20 ADF Cover ASSY (1) Open the ADF cover ASSY. (2) Remove the two Pins to remove the ADF cover ASSY from the ADF unit. ADF cover ASSY ADF unit Fig. 3-89 3-79 Confidential...

  • Page 263: Document Hold Assy/Earth Spring

    9.21 Document Hold ASSY/Earth Spring Memo: Follow the procedures (2) and (3) in the case of the Legal model. (1) As pressing the Document hold ASSY, slide it in the direction of the arrow 1b. Document hold ASSY ADF cover ASSY Fig.
  • Page 264 ■ Legal model (2) Remove the Pin "a" from the Hook of the Document hold ASSY to remove the Document hold ASSY from the ADF cover ASSY. Document hold ASSY Document hold ASSY ADF cover ASSY Pin “a” Pin “a” Fig.
  • Page 265 Assembling Note: When assembling the Earth spring, be sure to assemble it as shown in the figure below. Earth spring ADF cover ASSY ADF cover ASSY Earth spring Fig. 3-94 3-82 Confidential...

  • Page 266: Gear Cover

    9.22 Gear Cover (1) Release the two Hooks of the ADF unit. ADF unit Hook Hook Hook ADF unit Gear cover Hook Gear cover Fig. 3-95 (2) Remove the Gear cover from the ADF unit. ADF unit Gear cover Hook Fig.

  • Page 267: Separate Roller Assy

    9.23 Separate Roller ASSY (1) Rotate the Conductive bush to release the lock. Separate roller ASSY ADF unit Conductive bush Fig. 3-97 (2) Remove the shaft end at the opposite side to remove the Separate roller ASSY from the ADF unit. Note: When removing the Separate roller ASSY, be careful not to damage the Flap ADF.
  • Page 268 Assembling Note: When assembling the Separate roller ASSY, be sure to assemble it in a way that the Flap ADF comes under the Document feed roller S ASSY. Flap ADF Document feed Separate roller ASSY roller S ASSY Flap ADF Fig.

  • Page 269: Adf Spring/Separation Rubber Holder

    9.24 ADF Spring/Separation Rubber Holder ■ A4 model (1) Remove the two Pins to remove the Separation rubber holder ASSY from the Upper document chute ASSY. Upper document chute ASSY Separation rubber holder Separation rubber holder ASSY Fig. 3-100 (2) Remove the ADF spring from the Upper document chute ASSY. ADF spring Upper document chute ASSY Fig.
  • Page 270 Assembling Note: There are cases where the ADF spring enters the Upper document chute ASSY from the mounting hole of the Separation rubber holder ASSY. In this case, remove the Upper document chute ASSY from the ADF unit and take out the ADF spring. In the case that the Upper document chute ASSY has been removed, be sure to assemble the ADF spring and Separation rubber first, and then assemble the Upper document chute ASSY to the ADF unit.
  • Page 271 (2) Release the two Hooks to remove the Separation rubber holder from the Upper document chute ASSY. Hook Separation rubber holder Hook Upper document chute ASSY Fig. 3-104 (3) Remove the Separate support film and Separation rubber from the Upper document chute ASSY.
  • Page 272 Assembling Note: If the edge of the Support film protrudes from the Upper document chute ASSY, it causes noise. Separation rubber Separation rubber Support film Upper document chute ASSY Upper document Support film chute ASSY Separation rubber Support film Upper document chute ASSY Fig.
  • Page 273 (5) Release the Hook of the ADF spring holder. Hook ADF spring holder Upper document chute ASSY Fig. 3-108 (6) Remove the two Pins to remove the ADF spring holder from the Upper document chute ASSY. ADF spring holder Upper document chute ASSY Fig.
  • Page 274 (7) Remove the ADF spring from the Upper document chute ASSY. ADF spring Upper document chute ASSY Fig. 3-110 3-91 Confidential...

  • Page 275: Second Side Scanning Cis/Second Side Scanning Cis Flat Cable

    9.25 Second Side Scanning CIS/ Second Side Scanning CIS Flat Cable Note: Disassemble it in a place without dust. (1) Rotate the Conductive bush to release the lock. ADF unit Document feed roller S ASSY Conductive bush Fig. 3-111 (2) Remove the shaft end at the opposite side to remove the Document feed roller S ASSY from the ADF unit.
  • Page 276 (3) Release the two Hooks to remove the CIS glass stopper from the ADF unit. Hook ADF unit CIS glass stopper Fig. 3-113 (4) Remove the CIS glass from the ADF unit. CIS glass ADF unit Fig. 3-114 3-93 Confidential...
  • Page 277 (5) Remove the CIS spacer from the both ends of the Second side scanning CIS. CIS spacer Second side scanning CIS CIS spacer ADF unit Fig. 3-115 (6) Lift the Second side scanning CIS to remove the Second side scanning CIS flat cable. Second side scanning CIS Second side scanning CIS flat cable...
  • Page 278 (7) Remove the two CIS spring from the ADF unit. CIS spring CIS spring ADF unit Fig. 3-117 (8) Remove the Second side scanning CIS flat cable from the ADF unit. Second side scanning CIS flat cable ADF unit Fig. 3-118 3-95 Confidential...
  • Page 279 Assembling Note: Since the Second side scanning CIS flat cable might be broken when you remove it from the FFC holder ASSY, be sure to replace it with a new Second side scanning CIS flat cable. When assembling a new Second side scanning CIS flat cable, be sure to assemble it in accordance with the following procedure.
  • Page 280 (3) Pass the Second side scanning CIS flat cable through the ADF unit. Second side scanning CIS flat cable Upper document chute ASSY Lower chute ASSY Fig. 3-121 (4) Affix double-sided adhesive tape to the FFC holder ASSY as shown in the figure below. (If the double-sided adhesive tape has already been affixed, be sure to remove it, and then affix new double-sided adhesive tape.) FFC holder ASSY...
  • Page 281 (5) Fold the Second side scanning CIS flat cable at the position 200 mm away from the Second side scanning CIS side. Reinforcement plate Fold down FFC along with the solid line Second side scanning CIS flat cable Reinforcement tape 200 mm Fig.
  • Page 282 (7) Pass the Second side scanning CIS flat cable through the Document scanner unit. ADF unit Second side scanning CIS flat cable FFC holder ASSY Document scanner unit Fig. 3-125 3-99 Confidential...
  • Page 283 (8) Fold the Second side scanning CIS flat cable at the Main PCB ASSY side. ■ A4 model Fold down FFC along with the solid line Fold up FFC along with the dotted line <Main PCB ASSY side> Second side scanning CIS flat cable Reinforcement plate 1 mm 45°...

  • Page 284: Upper Document Chute Assy

    9.26 Upper Document Chute ASSY (1) Turn the ADF unit upside down. (2) Remove the Taptite cup B M3x10 screw from the ADF unit. Taptite cup B M3x10 ADF unit Fig. 3-128 (3) Return the ADF unit to the original position. (4) Remove the five Taptite cup B M3x10 screws from the Upper document chute ASSY.

  • Page 285: Document Front/Adf Open Sensor/Document First Side Rear Sensor/Document Second Side Rear Sensor

    9.27 Document Front/ADF Open Sensor/ Document First Side Rear Sensor/ Document Second Side Rear Sensor Memo: This part can be replaced without disassembling Second side scanning CIS. (1) Shift the Upper document chute ASSY to the position shown in the figure so that it will not interfere with the work.
  • Page 286 ■ A4 model (2) Push and open the Rib to remove the Document front/ADF open sensor from the Lower document chute. Document front/ADF open sensor Lower document chute Fig. 3-131 ■ Legal model (2) Lift the film, and then push and open the Rib to remove the Document front/ADF open sensor from the Lower document chute.
  • Page 287 (3) Disconnect the Connector from the Document front/ADF open sensor. Connector Document front/ADF open sensor Fig. 3-133 ■ A4 model (4) Lift the film, and then push and open the Rib to remove the Document second side rear sensor from the Lower document chute. Document second side rear sensor Film...
  • Page 288 ■ Legal model (4) Push and open the Rib to remove the Document second side rear sensor from the Lower document chute. Document second side rear sensor Lower document chute Document second side rear sensor Document first side rear sensor Fig.

  • Page 289: Drive Frame Assy/Document Feed Roller Assy

    9.28 Drive Frame ASSY/Document Feed Roller ASSY (1) Release the two Hooks to remove the Ejection roller bush from the Ejection roller ASSY. Ejection roller bush Lower chute ASSY Ejection roller ASSY Hook Fig. 3-137 (2) Rotate the Conductive bush to release the lock. Conductive bush Lower chute ASSY Conductive bush...
  • Page 290 (3) Remove the shaft end at the opposite side to remove Ejection roller ASSY from the Lower chute ASSY. Ejection roller ASSY Lower chute ASSY Fig. 3-139 (4) Remove the three Taptite cup B M3x10 screws from the Lower chute ASSY. (5) Release the Hook to remove the Lower chute ASSY from the Document cover ASSY.
  • Page 291 (6) Release the Pin of the Conductive bush and rotate it to the position shown in the figure. Conductive bush Conductive bush ADF unit Document feed roller ASSY Fig. 3-141 (7) Remove the shaft end at the opposite side to remove the Document feed roller ASSY from the Lower chute ASSY.
  • Page 292 (8) Remove the Taptite cup S M3x6 screw from the Lower chute ASSY. Taptite cup S M3x6 ADF FG harness Lower chute ASSY Fig. 3-143 (9) Remove the three Taptite cup B M3x10 screws to remove the Drive frame ASSY from the Lower chute ASSY.
  • Page 293 Assembling Note: When asembling the Drive frame ASSY, ensure that the Arm ASSY L2 are placed in the positions as shown in the figure below. Drive frame ASSY Arm ASSY L2 Fig. 3-145 (10) Disconnect the Connector from the ADF motor. Drive frame ASSY ADF motor Connector...

  • Page 294: Adf Motor

    9.29 ADF Motor (1) Release the Hook to remove the Gear 43 from the Drive frame ASSY. Hook Gear 43 Drive frame ASSY Fig. 3-147 (2) Remove the Screw pan (S/P washer) M3x6 screw to remove the ADF motor from the Drive frame ASSY.

  • Page 295: Document Hold Assy

    9.30 Document Hold ASSY (1) Turn the Lower chute ASSY upside down. (2) Remove the two Pins to remove the Document hold ASSY from the Lower chute ASSY. Document hold ASSY Lower chute ASSY Fig. 3-149 3-112 Confidential...

  • Page 296: Document Cover Assy/Grip Cover

    9.31 Document Cover ASSY/Grip Cover (1) Remove the three LF2 spring shafts and three LF2 pinch rollers. LF2 spring shaft LF2 pinch roller LF2 pinch roller LF2 spring shaft LF2 pinch roller LF2 spring shaft Document cover ASSY Fig. 3-150 (2) Turn the Document cover ASSY upside down.

  • Page 297: Panel Cover Assy

    9.32 Panel Cover ASSY ■ A4 model (1) Release the eight Hooks to remove the Panel cover ASSY from the Document scanner unit. Hook Hook Hook Panel cover ASSY Hook Document scanner unit Fig. 3-152 ■ Legal model (1) Release the four Hooks to remove the Panel cover ASSY from the Panel unit. Hook Panel cover ASSY Panel unit...

  • Page 298: Panel Unit

    9.33 Panel Unit ■ A4 model (1) Remove the four Taptite cup B M3x10 screws from the Panel unit. Taptite cup B M3x10 Taptite cup B M3x10 Panel unit Document scanner unit Fig. 3-154 (2) Release the four Hooks to remove the Panel unit from the Document scanner unit. Note: Be careful not to pull the Panel unit strongly because the Harness is connected to it.
  • Page 299 (3) Disconnect the Connector (CN4) from the Panel PCB ASSY. Panel unit Connector Panel PCB ASSY Fig. 3-156 ■ Legal model (1) Remove the three Taptite cup B M3x10 screws from the Panel unit. Taptite cup B M3x10 Panel unit Taptite cup B M3x10 Fig.
  • Page 300 (2) Release the six Hooks to remove the Panel unit from the Main body. Panel unit Hook Hook Hook Hook Main body Fig. 3-158 Note: Be careful not to pull the Panel unit strongly because the Harness is connected to it. (3) Disconnect the Connector (CN1) from the Touch panel PCB.

  • Page 301: Panel Pcb Assy

    9.34 Panel PCB ASSY ■ A4 model (1) Disconnect the Connector (CN2) and Flat cable (CN3) from the Panel PCB ASSY. Lock Flat cable Flat cable Connector Panel PCB ASSY Fig. 3-160 (2) Release the ten Hooks to remove the Panel PCB ASSY from the Panel unit. Note: The Panel PCB ASSY consists of two PCBs, and they are connected with a Flat cable.
  • Page 302 ■ Legal model (1) Disconnect the Flat cable (CN1) from the Panel PCB ASSY L. Panel PCB ASSY L Flat cable Panel cover Fig. 3-162 (2) Release the four Hooks to remove the Panel PCB ASSY L from the Panel cover. Hook Panel PCB ASSY L Hook...
  • Page 303 (3) Disconnect the Flat cable (CN1) from the Panel PCB ASSY R. Flat cable Panel PCB ASSY R Panel cover Fig. 3-164 (4) Release the four Hooks to remove the Panel PCB ASSY R from the Panel cover. Hook Panel PCB ASSY R Hook Panel cover Hook...

  • Page 304: Rubber Key

    9.35 Rubber Key ■ A4 model (1) Remove the Printed rubber key C from the Panel cover. Printed rubber key C Panel cover Fig. 3-166 (2) Remove the Printed rubber key L and R from the Panel cover. Printed rubber key L Printed rubber key R Panel cover Fig.
  • Page 305 Assembling Note: - Upon assembling, assemble the Printed rubber key L and Printed rubber key R first, and then assemble the Printed rubber key C. - Check if it is firmly inserted into the Positioning pin. Positioning pin Positioning pin Positioning pin Printed rubber key R Printed...
  • Page 306 (2) Remove the Rubber key R from the Panel cover. Rubber key R Panel cover Fig. 3-170 3-123 Confidential...

  • Page 307: Lcd/Back Light Module/Touch Panel Pcb Assy/Touch Panel Assy

    9.36 LCD/Back Light Module/Touch Panel PCB ASSY/ Touch Panel ASSY ■ A4 model (1) Remove the Panel light guide and Caution lamp lens from the Panel cover. Caution lamp lens Panel light guide Panel cover Fig. 3-171 (2) Release the four Hooks to remove the LCD cover from the Panel cover. Note: Be careful because there are cases where the LCD and Back light module come off at the same time.
  • Page 308 (3) Remove the LCD from the Back light module. Back light module Fig. 3-173 ■ Legal model (1) Disconnect the Flat cables (CN2 and CN7) from the Touch panel PCB ASSY. Touch panel PCB ASSY Flat cable Panel cover Flat cable Fig.
  • Page 309 (2) Remove the three Screw pan (S/P washer) M3x6 screws to remove the Touch panel PCB ASSY from the Panel cover. Screw pan (S/P washer) M3x6 Touch panel PCB ASSY Screw pan (S/P washer) M3x6 Panel cover Fig. 3-175 (3) Lift the Touch panel PCB insulation sheet L, and remove the six Taptite cup B 3x8 screws and FG harness.
  • Page 310 Assembling Note: When assembling the Touch panel PCB shield plate ASSY, be sure to install the screws in the order of the numbers marked on the Touch panel PCB shield plate ASSY. Mark FG harness Touch panel PCB shield plate ASSY Fig.

  • Page 311: Pull Arm Guide/Lock Claw (A4 Model Only)

    (6) Remove the Touch panel ASSY from the Panel cover. Touch panel ASSY Panel cover Fig. 3-179 9.37 Pull Arm Guide/Lock Claw (A4 Model Only) (1) Remove the Lock claw to remove the Pull arm guide from the Joint cover top. Pull arm guide Lock claw Lock claw...

  • Page 312: Joint Cover Top

    9.38 Joint Cover Top ■ A4 model (1) Remove the Joint film from the Joint cover top. Joint cover top Joint cover top Joint film Joint film Fig. 3-181 (2) Remove the eight Taptite bind B M4x12 screws from the Joint cover top. Taptite bind B M4x12 Taptite bind B M4x12 Taptite bind B M4x12...
  • Page 313 (3) Release the eight Hooks to remove the Joint cover top from the Main body. Hook Joint cover top Hook Hook Hook Main body Hook <Front> Fig. 3-183 Assembling Note: When affixing the Joint film, be sure to affix it to the Joint cover top as shown in the figure below.
  • Page 314 ■ Legal model (1) Remove the Screw pan (S/P washer) M3.5x6 screw to remove the NCU FG harness ASSY from the Main body. (2) Disconnect the Connector (CN9) from the Main PCB ASSY. (3) Disconnect the wiring from the Main PCB ASSY. Main body Connector NCU FG harness ASSY...
  • Page 315 (5) Release the four Hooks of the front. Joint cover top Hook Hook Hook <Front> Fig. 3-187 (6) Release the eight Hooks to remove the Joint cover top from the Main body. Hook Hook Joint cover top Hook <Front> Main body Fig.
  • Page 316 (7) Remove the two Taptite bind B M4x12 screws to remove the NCU unit from the Joint cover top. Taptite bind B M4x12 NCU unit Joint cover top Fig. 3-189 Harness routing: Refer to “ NCU” 3-133 Confidential...

  • Page 317: Ncu Pcb Assy

    9.39 NCU PCB ASSY Memo: Follow the procedures (5) to (7) in the case of the Legal model. (1) Remove the Screw pan (S/P washer) M3.5x6 screw to remove the NCU FG harness ASSY from the Main body. (2) Disconnect the Connector (CN9) from the Main PCB ASSY. (3) Disconnect the wiring from the Main PCB ASSY.
  • Page 318 (5) Remove the Screw pan (S/P washer) M3.5x6 screw to remove the NCU shield cover from the NCU unit. Screw pan (S/P washer) M3.5x6 NCU shield cover NCU unit Fig. 3-192 (6) Remove the two Taptite cup S M3x6 SR screws to remove the NCU PCB ASSY from the NCU shield plate.

  • Page 319: Back Cover Upper (A4 Model Only)

    (7) Remove the NCU harness ASSY from the NCU PCB ASSY. NCU PCB ASSY NCU harness ASSY Fig. 3-194 Harness routing: Refer to “ NCU” 9.40 Back Cover Upper (A4 Model Only) (1) Remove the four Taptite bind B M4x12 screws from the Back cover upper. (2) Release the two Hooks to remove the Back cover upper from the Main body.
  • Page 320 9.41 Joint Cover FL ASSY (1) Disconnect the Connector (CN11) and cables from the Main PCB ASSY. CN3 CN4 CN10 CN12 CN13 Main PCB ASSY CN15 CN17 CN11 CN22 CN25 CN27 CN23 CN24 CN26 CN30 Fig. 3-196 (2) Remove the Taptite bind B M4x12 screw and Taptite cup S M3x6 SR screw from the Main body.

  • Page 321: Joint Cover

    (3) Release the two Hooks to remove the Joint cover FL ASSY from the Main body. Joint cover FL ASSY Joint cover FL ASSY Hook Main body Hook Main body Fig. 3-198 Harness routing: Refer to “ USB” 3-138 Confidential...

  • Page 322: Usb Host Relay Pcb Assy

    9.42 USB Host Relay PCB ASSY (1) Remove the two Taptite bind B M4x12 screws to remove the USB host relay PCB ASSY from the Joint cover FL ASSY. Taptite bind B M4x12 Boss Panel ground plate Boss Joint cover FL ASSY USB host relay PCB ASSY Fig.

  • Page 323: Wireless Lan Holder/Wireless Lan Pcb

    9.43 Wireless LAN Holder/Wireless LAN PCB (1) Disconnect the Connector (CN17) and cables from the Main PCB ASSY. CN3 CN4 CN10 CN12 CN13 Main PCB ASSY CN15 CN17 CN11 CN22 CN25 CN27 CN23 CN24 CN26 CN30 Fig. 3-201 (2) Release the Hook to remove the Wireless LAN holder from the Main body. Wireless LAN holder Hook Main body...
  • Page 324 (3) Release the three Hooks to remove the Wireless LAN PCB from the Wireless LAN holder. Hook Wireless LAN PCB Hook Wireless LAN holder Hook Fig. 3-203 (4) Disconnect the Connector of Main wireless LAN harness ASSY from the Wireless LAN PCB.

  • Page 325: Speaker Unit/Speaker Hold Spring

    9.44 Speaker Unit/Speaker Hold Spring (1) Disconnect the Connector (CN10) and cables from the Main PCB ASSY. CN3 CN4 CN10 CN12 CN13 Main PCB ASSY CN15 CN17 CN11 CN22 CN25 CN27 CN23 CN24 CN26 CN30 Fig. 3-205 (2) Release the Hook to remove the Speaker hold spring from the Main body. Hook Speaker hold spring Main body...
  • Page 326 (3) Remove the Speaker unit from the Main body. Speaker unit Main body Fig. 3-207 Harness routing: Refer to “ Speaker” 3-143 Confidential...

  • Page 327: Joint Cover Base Assy

    9.45 Joint Cover Base ASSY (1) Remove the seven Taptite cup S M3x8 screws from the Joint cover base ASSY. Taptite cup S M3x8 Taptite cup S M3x8 Taptite cup S M3x8 Main body <Front> Joint cover base ASSY Fig. 3-208 (2) Remove the two Taptite bind B M4x12 screws from the Joint cover base ASSY.
  • Page 328 (3) Release the ten Hooks to remove the Joint cover base ASSY from the Main body. Hook Hook Hook Joint cover base ASSY Hook Hook Main body <Front> Fig. 3-210 3-145 Confidential...

  • Page 329: Main Pcb Assy

    9.46 Main PCB ASSY (1) Disconnect the eight Connectors (CN12, CN13, CN23, CN24, CN25, CN26, CN27, and CN30) and two Flat cables (CN15 and CN22) from the Main PCB ASSY. Note: - After disconnecting flat cable(s), check that each cable is not damaged at its end or shortcircuited.

  • Page 330: Engine Pcb Assy

    9.47 Engine PCB ASSY (1) Disconnect the seventeen Connectors (CN3, CN5, CN8, CN9, CN10, CN11, CN12, CN13, CN14, CN16, CN17, CN18, CN19, CN20, CN21, CN22, and CN23) and four Flat cables (CN1, CN2, CN15, and CN25) from the Engine PCB ASSY. Note: - After disconnecting flat cable(s), check that each cable is not damaged at its end or shortcircuited.

  • Page 331: Laser Unit

    9.48 Laser Unit (1) Remove the Main insulation sheet from the Top drive ASSY. Top drive ASSY Main insulation sheet <Left side> Fig. 3-215 (2) Remove the three Taptite cup S M3x6 SR screws to remove the Main shield plate from the Top drive ASSY.
  • Page 332 (3) Disconnect the wiring of the Fuser develop motor flat cable from the Develop FFC holder. (4) Release the two Hooks to remove the Develop FFC holder from the Upper cable rack. Develop FFC holder Hook Hook Upper cable rack <Left side>...
  • Page 333 (7) Remove the two Taptite cup S M3x6 SR screws to remove the Top beam from the Base frame unit. Taptite cup S M3x6 SR Top beam Base frame unit <Front> Fig. 3-219 (8) Remove the five Taptite cup S M3x6 SR screws to remove the four Scanner holders. Taptite cup S Taptite cup S M3x6 SR M3x6 SR...
  • Page 334 (9) Disconnect the Connector (CN8) and two Flat cables from the Laser unit to remove the Laser unit from the Base frame unit. Note: After disconnecting flat cables, check that each cable is not damaged at its end or shortcircuited. Laser unit Base frame unit Laser unit-Engine...

  • Page 335: Develop Release Motor

    9.49 Develop Release Motor (1) Remove the two Taptite bind S M3x6 screws. Top drive ASSY Taptite bind S M3x6 Develop release motor <Left side> Fig. 3-223 (2) Rotate the Develop release motor counterclockwise to release the Hook to remove the Develop release motor from the Top drive ASSY.

  • Page 336: Front Cover Sensor

    9.50 Front Cover Sensor (1) Disconnect the wiring of the Front cover sensor from the Panel cable rack. (2) Release the two Hooks to remove the Front cover sensor. Hook Hook Front cover sensor Panel cable rack <Left side> Fig. 3-225 Harness routing: Refer to “...

  • Page 337: Top Drive Assy

    9.51 Top Drive ASSY (1) Disconnect cables from the Lower cable rack. (2) Release the four Hooks to remove the Lower cable rack from the Top drive ASSY. <Left side> Hook Lower cable rack Hook Top drive ASSY Hook Fig. 3-226 (3) Disconnect cables from the PF line holder.
  • Page 338 (5) Disconnect cables from the Panel cable rack. (6) Remove the Taptite cup S M3x6 SR screw. (7) Release the four Hooks to remove the Panel cable rack from the Top drive ASSY. Top drive ASSY <Left side> Hook Panel cable rack Hook Hook Taptite cup S M3x6 SR...
  • Page 339 (9) Remove the nine Taptite cup S M3x6 SR screws and Taptite bind B M4x12 screw from the Top drive ASSY. Top drive ASSY Base frame unit Taptite cup S M3x6 SR Taptite bind B M4x12 FG wire under bar rear FG wire under bar rear Base frame unit Hook...
  • Page 340 (10) Remove the Forced develop release link from the Develop forced release part. (11) Release the two Hooks to remove the Top drive ASSY from the Base frame unit. Forced develop release link Base frame unit Hook Develop forced release part Hook Top drive ASSY <Left side>...

  • Page 341: Forced Develop Release Link

    9.52 Forced Develop Release Link (1) Remove the Forced develop release link from the Forced develop release cam. Forced develop release link Forced develop release cam Forced develop release cam Forced develop release link <Left side> Fig. 3-233 3-158 Confidential...

  • Page 342: Drum Drive Motor

    9.53 Drum Drive Motor (1) Remove the two Drum coupling gear Z52 from the Top drive ASSY. Drum coupling gear Z52 Drum coupling gear Z52 Top drive ASSY Fig. 3-234 Gear position: Refer to “ Top drive ASSY.” (2) Remove the two Drum idle gear Z64 from the Top drive ASSY. Drum idle gear Z64 Top drive ASSY Fig.
  • Page 343 (3) Remove the Collar 6 from the Drum idle gear Z64 first. Drum idle gear Z64 first Collar 6 Fig. 3-236 (4) Remove the Drum idle gear Z64 first from the Top drive ASSY. Drum idle gear Z64 first Top drive ASSY Fig.
  • Page 344 (5) Remove the three Screw bind M3x4 screws to remove the Drum drive motor from the Top drive ASSY. Screw bind M3x4 Top drive ASSY Drum drive motor Fig. 3-238 Assembling Note: Align the phase of the Drum idle gear Z64, Drum idle gear Z64 first, and Drum coupling gear Z52.

  • Page 345: Drum Position Sensor Pcb Assy

    9.54 Drum Position Sensor PCB ASSY (1) Remove the Drum coupling gear Z52 from the Top drive ASSY. Drum coupling gear Z52 Top drive ASSY Drum coupling gear Z52 Fig. 3-239 Gear position: Refer to “ Top drive ASSY.” Note: Be sure to align the phase before removing the gear.

  • Page 346: Registration Solenoid Assy

    9.55 Registration Solenoid ASSY (1) Disconnect the wiring of the Registration solenoid ASSY. (2) Remove the Taptite cup S M3x6 SR screw to remove the Registration solenoid ASSY and Registration solenoid spring from the Top drive ASSY. Taptite cup S M3x6 SR Registration solenoid spring Registration solenoid ASSY Top drive ASSY...

  • Page 347: Develop Release Sensor Pcb Assy/Mono Solenoid Assy

    9.56 Develop Release Sensor PCB ASSY/Mono Solenoid ASSY (1) Remove the three Taptite cup S M3x6 SR screws to remove the Top drive cover from the Top drive ASSY. Taptite cup S M3x6 SR Taptite cup S M3x6 SR Top drive cover Top drive ASSY Fig.
  • Page 348 (4) Remove the Gear Z63-30 from the Top drive ASSY. Gear Z63-30 Top drive ASSY Fig. 3-244 Gear position: Refer to “ Top drive ASSY.” (5) Remove the Taptite cup S M3x6 SR screw to remove the Mono solenoid ASSY and Mono solenoid spring from the Top drive ASSY.

  • Page 349: Fuser Develop Motor Assy

    9.57 Fuser Develop Motor ASSY (1) Remove the four Taptite cup S M3x6 SR screws to remove the Fuser develop motor ASSY from the Top drive ASSY. Taptite cup S M3x6 SR Taptite cup S M3x6 SR Fuser develop motor ASSY Top drive ASSY Fig.

  • Page 350: Pf Plate Assy/T1 Solenoid Assy

    9.58 PF Plate ASSY/T1 Solenoid ASSY (1) Remove the three Taptite bind B M4x12 screws and Taptite cup S M3x6 SR screw. Remove the PF plate ASSY from the PF cleaner drive ASSY. Release the FG wire under bar. <Left side> PF cleaner drive ASSY PF cleaner drive ASSY FG wire...
  • Page 351 (2) Disconnect the wiring on the PF cleaner drive ASSY. (3) Remove the two Taptite bind B M4x12 screws to remove the PF cleaner drive ASSY from the Base frame unit. PF cleaner drive ASSY Taptite bind B M4x12 <Left side> Base frame unit Taptite bind B M4x12 Fig.

  • Page 352: Toner/New Sensor Pcb Assy

    9.59 Toner/New Sensor PCB ASSY (1) Release the two Hooks to remove the TE sensor protect film from the Toner reset holder. Toner reset holder <Left side> Hook TE sensor protect film Fig. 3-250 (2) Release the six Hooks to remove the Toner/New sensor PCB ASSY from the Toner reset holder.

  • Page 353: Internal Temperature Thermistor

    9.60 Internal Temperature Thermistor (1) Remove the Internal temperature thermistor from the Main body. Internal temperature thermistor Main body <Left side> Fig. 3-252 Assembling Note: - Insert the tip of the Internal temperature thermistor firmly into the Insertion hole until it reaches the end of the Hole.

  • Page 354: Fuser Fan

    9.61 Fuser Fan (1) Disconnect the Connector (CN4) from the High-voltage power supply PCB ASSY. High-voltage power supply PCB ASSY Connector <Right side> Fuser fan Fig. 3-254 (2) Pull out the Fuser fan from the Paper eject ASSY by slightly rotating it in the arrow direction in the figure below.
  • Page 355 Assembling Note: When assembling the Fuser fan, be sure to assemble it in a way that the label side faces out. Paper eject ASSY Fuser fan Label <Right side> Fig. 3-256 3-172 Confidential...

  • Page 356: Paper Eject Assy

    9.62 Paper Eject ASSY (1) Disconnect the wiring of the harness from the High-voltage power supply PCB ASSY. (2) Remove the five Taptite cup S M3x6 SR screws to remove the Paper eject ASSY from the Base frame unit. Taptite cup S M3x6 SR Paper eject ASSY Taptite cup S M3x6 SR Base frame unit...

  • Page 357: Filter Assy

    9.63 Filter ASSY (1) Remove the Toner filter ASSY from the Paper eject ASSY. Paper eject ASSY Toner filter ASSY Fig. 3-258 (2) Remove the Taptite bind B M4x12 screw to remove the Eject duct from the Paper eject ASSY. Eject duct Paper eject ASSY Taptite bind B M4x12...
  • Page 358 (3) Remove the Filter ASSY from the Eject duct. Eject duct Filter ASSY Fig. 3-260 3-175 Confidential...

  • Page 359: Paper Eject Motor

    9.64 Paper Eject Motor (1) Remove the two Taptite bind S M3x6 screws to remove the Paper eject motor from the Paper eject ASSY. Paper eject ASSY Paper eject motor Taptite bind S M3x6 Fig. 3-261 Harness routing: Refer to “...

  • Page 360: Back Cover Sensor Assy

    9.65 Back Cover Sensor ASSY (1) Release the two Hooks to remove the Back cover sensor ASSY from the Paper eject ASSY. Paper eject ASSY Hook Back cover sensor ASSY Hook Back cover sensor ASSY Fig. 3-262 Harness routing: Refer to “...

  • Page 361: Power Fan

    9.66 Power Fan (1) Disconnect the Connector (CN5) from the High-voltage power supply PCB ASSY. Connector Power fan High-voltage power supply PCB ASSY <Right side> Fig. 3-263 (2) Remove the Power fan from the Base frame unit. <Right side> Power fan Base frame unit Label Fig.
  • Page 362 Assembling Note: When assembling the Power fan, be sure to assemble it in a way that the label side faces out. <Right side> Power fan Base frame unit Label Fig. 3-265 3-179 Confidential...

  • Page 363: Low-Voltage Power Supply Unit

    9.67 Low-voltage Power Supply Unit (1) Remove the two Pins to remove the Back flapper ASSY from the Low-voltage power supply cover. Low-voltage power supply cover Back flapper ASSY <Back side> Fig. 3-266 (2) Release the two Hooks to remove the Switch holder from the Base frame unit. <Right side>...
  • Page 364 (3) Remove the Taptite flat B M3x10 screw to remove the AC inlet from the Low-voltage power supply unit. Low-voltage power supply unit <Right side> Taptite flat B M3x10 AC inlet Fig. 3-268 (4) Remove the screw “a” of the Screw pan (S/P washer) M4x8 from the Low-voltage power supply unit to remove the ground terminal.

  • Page 365: Paper Eject Sensor Pcb Assy

    (5) Remove the two Taptite cup S M3x8 screws and two Taptite cup B M3x12 screws to remove the Low-voltage power supply unit from the Base frame unit. Base frame unit Taptite cup S M3x8 Taptite cup B M3x12 Low-voltage power supply unit Taptite cup S M3x8 <Back side>...

  • Page 366: Low-Voltage Power Supply Pcb Assy/Inlet Harness Assy

    9.69 Low-voltage Power Supply PCB ASSY/ Inlet Harness ASSY (1) Disconnect the Harness from Hooks. (2) Remove the four Taptite pan (washer) B M4x12DA screws, one Screw pan (S/P washer) M4x8 screw, and the Low-voltage power supply ground plate, and then remove the Low-voltage power supply plate from the Low-voltage power supply cover.
  • Page 367 (4) Disconnect the Connector (CN2) from the Low-voltage power supply PCB ASSY. CN102 CN103 CN101 Low-voltage power supply PCB ASSY Fig. 3-274 (5) Release the two Hooks to remove the Power switch from the Power switch holder. Power switch holder Power switch Hook Hook...
  • Page 368 (6) Remove the four Screw cup M3x6 screws to remove the Low-voltage power supply PCB ASSY from the Low-voltage power supply plate. Screw cup M3x6 Screw cup M3x6 Low-voltage power supply plate Low-voltage power supply PCB ASSY Fig. 3-276 3-185 Confidential...

  • Page 369: Cleaner Pinch Roller Holder

    9.70 Cleaner Pinch Roller Holder (1) Remove the two Pins and release the one Hook to remove the Front chute flapper and two Flapper springs from the Low-voltage power supply unit. Hook Flapper spring Front chute flapper Flapper spring Low-voltage power supply unit Fig.
  • Page 370 (3) Hold down the Cleaner spring of the Cleaner pinch roller holder to remove the Cleaner pinch roller ASSY. (4) Remove the other three Cleaner pinch roller ASSY in the same way. Cleaner pinch roller ASSY Cleaner spring Cleaner spring Cleaner pinch roller holder Fig.

  • Page 371: Registration Mark Sensor Holder Assy/Shutter Solenoid

    9.71 Registration Mark Sensor Holder ASSY/ Shutter Solenoid (1) Disconnect the Connector (CN8) from the High-voltage power supply PCB ASSY. Shutter solenoid Connector High-voltage power supply PCB ASSY <Right side> Fig. 3-280 (2) Remove the Core from the Harness of the Registration mark R PCB and Belt temperature sensor.
  • Page 372 (3) Remove the two Taptite bind B M3x10 screws to remove the Registration mark sensor holder ASSY from the Base frame unit. Registration mark sensor holder ASSY Taptite bind B M3x10 <Back side> Base frame unit Fig. 3-282 (4) Remove the Taptite bind B M3x10 screw to remove the Shutter solenoid from the Registration mark sensor holder ASSY.
  • Page 373 Assembling Note: Be sure to firmly insert the tip of the Pin of the Shutter solenoid into "A" of the Registration mark sensor shutter. “A” Registration mark sensor shutter Shutter solenoid Fig. 3-284 Harness routing: Refer to “ Registration Mark Sensor Holder ASSY” 3-190 Confidential...

  • Page 374: Mp Paper Empty/Registration Front Sensor Pcb Assy

    9.72 MP Paper Empty/Registration Front Sensor PCB ASSY (1) Press "A" to release the Hook and then remove the MP upper frame cover from the MP upper cover ASSY. “A” MP upper frame cover Hook MP upper cover ASSY Fig. 3-285 (2) Remove the MP lift arm B from the MP upper cover ASSY.
  • Page 375 (3) Release the Hook to remove the MP holder bush from the MP upper cover ASSY. Hook MP holder bush MP upper cover ASSY Fig. 3-287 (4) Remove the MP roller holder ASSY from the MP upper cover ASSY. MP roller holder ASSY MP upper cover ASSY Fig.
  • Page 376 (5) Remove the Registration gear from the Base frame unit. Registration gear Base frame unit Fig. 3-289 Gear position: Refer to “ PF ASSY.” (6) Remove the Pinch roller drive gear from the Base frame unit. Pinch roller drive gear Base frame unit Fig.
  • Page 377 (7) Release the Hook to remove the Registration/Pinch roller gear bush from the Base frame unit. Registration/Pinch roller gear bush Hook Base frame unit Fig. 3-291 Gear position: Refer to “ PF ASSY.” (8) Remove the two Taptite bind B M3x10 screws. Slide the MP drive shaft as shown in the figure.
  • Page 378 (9) Release the five Hooks to remove the Sensor cover MP from the MP upper cover ASSY. MP upper cover ASSY Hook Hook Hook Sensor cover MP Fig. 3-293 (10) Release the two Hooks to remove the MP paper empty actuator A ASSY from the MP upper cover ASSY.
  • Page 379 (11) Release the Hook to remove the MP paper empty actuator B from the MP upper cover ASSY. MP upper cover ASSY Align here MP paper empty actuator B Hook Align here Fig. 3-295 (12) Release the Hook to remove the Separation R shaft bush from the MP drive shaft. Separation R shaft bush MP drive shaft Hook...
  • Page 380 (13) Remove the MP registration front actuator spring from the MP registration front actuator. MP registration front actuator spring MP registration front actuator MP upper cover ASSY Hook Fig. 3-297 (14) Take out the MP drive shaft, and then remove the MP registration actuator front from the MP upper cover ASSY.
  • Page 381 (15) Disconnect the wiring of the MP paper empty/registration front sensor PCB ASSY. (16) Remove the Taptite bind B M3x8 screw, and then remove the MP paper empty/ registration front sensor PCB ASSY from the MP upper cover ASSY. Taptite bind B M3x8 MP paper empty/registration front sensor PCB ASSY MP upper cover ASSY...

  • Page 382: Pf Assy

    9.73 PF ASSY (1) Push the T1 lift arm to the back to remove “B” of the Roller holder ASSY from “A” of the T1 lift arm. Front Roller holder ASSY PF ASSY Roller holder ASSY T1 lift arm “B” T1 lift arm “A”...
  • Page 383 Assembling Note: Align the Shaft of the roller holder ASSY to the hole of the PF ASSY and insert it into the hole. PF ASSY PF ASSY Roller holder ASSY Shaft Hole Fig. 3-302 (4) Move the T1 lift arm in the direction of the arrow 4b as bending it in the direction of the arrow 4a to remove it from the Boss of the PF ASSY.
  • Page 384 (5) Remove the Shoulder screw from the PF ASSY. (6) Remove the two Taptite bind B M4x12 screws, then shift the PF ASSY to the right, and remove it from the Base frame unit. Base frame unit Shoulder screw PF ASSY Taptite bind B M4x12 Fig.

  • Page 385: T1 Registration Front/Rear Sensor Pcb Assy

    9.74 T1 Registration Front/Rear Sensor PCB ASSY (1) Disconnect the wiring of the T1 registration front/rear sensor PCB ASSY. (2) Remove the Taptite bind B M3x10 screw to remove the T1 registration front/rear sensor PCB holder from the PF ASSY. Taptite bind B M3x10 T1 registration front/rear sensor PCB holder...

  • Page 386: Mp Sector Solenoid

    9.75 MP Sector Solenoid (1) Disconnect the wiring of the MP sector solenoid. (2) Remove the Taptite bind B M3x8 screw. Remove the MP sector solenoid and Solenoid spring MP from the PF ASSY. PF ASSY Taptite bind B M3x8 Solenoid spring MP MP sector solenoid Fig.

  • Page 387: T1 Paper Edge Sensor Pcb Assy/T1 Paper Edge Actuator/T1 Paper Edge Actuator Spring

    9.76 T1 Paper Edge Sensor PCB ASSY/ T1 Paper Edge Actuator/ T1 Paper Edge Actuator Spring (1) Remove the three Taptite bind B M3x10 screws from the MP drive frame. (2) Remove “A” of the Registration roller ground wire. (3) Remove the MP drive frame from the PF ASSY. MP drive frame PF ASSY Taptite bind B M3x10...
  • Page 388 (5) Remove the T1 paper edge actuator spring from the Hook of the PF ASSY and the Hook of the T1 paper edge actuator. Hook T1 paper edge actuator spring Hook PF ASSY T1 paper edge actuator Fig. 3-311 (6) Take out the T1 drive shaft gear Z17M07 from the PF ASSY, and then remove the T1 paper edge actuator.

  • Page 389: Cleaner Drive Gear 15

    (7) Disconnect the wiring of the T1 paper edge sensor PCB ASSY. (8) Release the three Hooks to remove the T1 paper edge sensor PCB ASSY from the PF ASSY. T1 paper edge sensor PCB ASSY PF ASSY Hook Fig. 3-313 Harness routing: Refer to “...

  • Page 390: High-Voltage Power Supply Pcb Assy

    9.78 High-voltage Power Supply PCB ASSY (1) Remove the High-voltage power supply protect film from the Base frame unit. High-voltage power supply protect film <Right side> Base frame unit Fig. 3-315 (2) Remove the four Spacers from the Base frame unit. Spacer Spacer Base frame unit...
  • Page 391 (3) Disconnect the two Connectors (CN1, CN2) from the High-voltage power supply PCB ASSY. High-voltage power supply PCB ASSY Fig. 3-317 (4) Remove the two Taptite cup S M3x6 SR screws. Taptite cup S M3x6 SR High-voltage power supply PCB ASSY Fig.
  • Page 392 (5) Release the eight Hooks to remove the High-voltage power supply PCB ASSY from the Base frame unit. (6) Disconnect the two Connectors (CN6, CN7). Base frame unit High-voltage power supply PCB ASSY High-voltage power supply PCB ASSY Hook <Right side> Hook Hook Hook...

  • Page 393: Waste Toner Sensor

    9.79 Waste Toner Sensor (1) Release the two Hooks to remove the Waste toner sensor cover from the Base frame unit. Waste toner sensor cover Hook Base frame unit Hook <Front> Fig. 3-321 (2) Release the three Hooks to remove the Waste toner sensor from the Base frame unit. Base frame unit Waste toner sensor Hook...
  • Page 394 (3) Disconnect the Connector from the Waste toner sensor. Connector Waste toner sensor Fig. 3-323 3-211 Confidential...

  • Page 395: Air Duct Cover/Blower

    9.80 Air Duct Cover/Blower (1) Release the four Hooks to remove the Air duct cover from the Base frame unit. <Right side> Hook Hook Base frame unit Air duct cover Fig. 3-324 (2) Disconnect the wiring of the Blower. (3) Remove the Blower from the Base frame unit. <Right side>...
  • Page 396 Assembling Note: When assembling the Blower, be sure to assemble it in a way that the label side faces up. <Right side> Label Base frame unit Blower Fig. 3-326 3-213 Confidential...

  • Page 397: Disassembly Procedure (Lt-300Cl)

    10. DISASSEMBLY PROCEDURE (LT-300CL) 10.1 T2 Paper Tray Unit (1) Take out the T2 paper tray unit from the main body. T2 paper tray unit Main body Fig. 3-327 (2) Release the two Hooks of the T2 separation pad ASSY to remove them in the upward direction.
  • Page 398 (3) Remove the T2 separation pad spring from the T2 separation pad ASSY. T2 separation pad ASSY T2 separation pad spring Fig. 3-329 3-215 Confidential...

  • Page 399: T2 Separation Roller Assy/Feed Roller Assy

    10.2 T2 Separation Roller ASSY/Feed Roller ASSY (1) Release the Hook and slide the T2 separation roller ASSY in the direction of the arrow 1. (2) Remove the T2 separation roller ASSY in the direction of the arrow 2b as rotating it in the direction of the arrow 2a.
  • Page 400 (3) Release the Hooks to remove the Feed roller ASSY from the Paper feed shaft. T2 paper feed frame unit Feed roller ASSY Hook Paper feed shaft Fig. 3-332 3-217 Confidential...

  • Page 401: T2 Cover Rear

    10.3 T2 Cover Rear (1) Remove the two Taptite cup S M3x10 SR screws from the T2 cover rear. Taptite cup S M3x10 SR T2 cover rear Taptite cup S M3x10 SR Fig. 3-333 (2) Remove the two Pins to remove the T2 cover rear from the Main body. T2 cover rear Main body Fig.

  • Page 402: T2 Cover Left

    10.4 T2 Cover Left (1) Remove the two Taptite cup S M3x6 SR screws from the T2 cover left. T2 cover left Taptite cup S M3x6 SR Taptite cup S M3x6 SR Fig. 3-335 (2) Remove the one Pin, and then release the two Hooks at the top. (3) Release the two Hooks at the bottom to remove the T2 cover left from the T2 frame L unit.

  • Page 403: T2 Cover Right

    10.5 T2 Cover Right (1) Remove the two Taptite cup S M3x6 SR screws from the T2 cover right. T2 cover right Taptite cup S M3x6 SR Taptite cup S M3x6 SR Fig. 3-337 (2) Remove the one Pin, and then release the two Hooks at the top. (3) Release the three Hooks at the bottom to remove the T2 cover right from the T2 frame L unit.

  • Page 404: T2 Relay Pcb Assy

    10.6 T2 Relay PCB ASSY (1) Disconnect the all Connectors from the T2 relay PCB ASSY. (T2 paper edge sensor) (T2 plate-up detection sensor) (Not used) (T2 connector) T2 relay PCB ASSY (T2 solenoid) (T2 plate-up motor) Fig. 3-339 (2) Remove the Taptite cup S M3x6 SR screw to remove the T2 relay PCB ASSY from the T2 frame L unit.

  • Page 405: T2 Solenoid Assy

    10.7 T2 Solenoid ASSY (1) Remove the Taptite cup S M3x6 SR screw to remove the T2 solenoid holder ASSY from the T2 frame L unit. T2 solenoid holder ASSY T2 frame L unit Taptite cup S M3x6 SR Fig. 3-341 (2) Remove the Screw flanged M3x3.5 screw to remove the T2 solenoid ASSY and T2 solenoid spring MP from the T2 solenoid holder.

  • Page 406: Collar 6

    10.8 Collar 6 (1) Remove the two pieces of the Collar 6 from the Fittings shaft. Collar 6 Fittings shaft Fig. 3-343 3-223 Confidential...

  • Page 407: T2 Paper Feed Frame Unit

    10.9 T2 Paper Feed Frame Unit (1) Remove the Clutch spring from the Clutch arm ASSY. Clutch arm ASSY Clutch spring Clutch arm ASSY Fig. 3-344 (2) Release the Hook to remove the Gear 45/40 from the T2 frame L unit. Gear 45/40 T2 frame L unit Hook...
  • Page 408 (3) Remove the Collar 6 from the Clutch arm ASSY. Collar 6 Clutch arm ASSY Fig. 3-346 (4) Remove the Clutch arm ASSY from the T2 frame L unit. T2 frame L unit Clutch arm ASSY Fig. 3-347 3-225 Confidential...
  • Page 409 (5) Remove the five Taptite cup S M3x6 SR screws to remove the T2 beam F ASSY from the T2 frame L unit. Taptite cup S M3x6 SR Taptite cup S M3x6 SR Taptite cup S M3x6 SR T2 beam F ASSY T2 frame L unit Fig.
  • Page 410 (7) Remove the Retaining ring E3 from the F roller, and then remove the FR bush TR. F roller FR bush TR Retaining ring E3 Fig. 3-350 (8) Remove the Lift spring from the Hook of the Lift lever A. (9) Remove the F roller from the T2 frame L unit in the directions of the arrows 9a, 9b, and 9c in this order.
  • Page 411 Assembling Note: When assembling the F roller, be sure to assemble it in a way that the Rib of the T2 paper feed frame unit comes between "A" and "B" of the Lift lever B, and the lever of the T2 paper feed holder unit comes in front of "B". Lift lever B "B"...
  • Page 412 (11) Release the Hook to remove the Gear 33 from the T2 frame L unit. Gear 33 T2 frame L unit Hook Fig. 3-354 (12) Remove the Extension spring from the Spring hook. (13) Release the Hook to remove the Gear 46/55 from the T2 frame L unit. T2 frame L unit Hook Gear 46/55...
  • Page 413 (14) Remove the Gear 46 from the T2 frame L unit. T2 frame L unit Gear 46 Fig. 3-356 (15) Turn the T2 frame L unit upside down. (16) Remove the two Taptite cup S M3x6 SR screws from the T2 beam front. Taptite cup S M3x6 SR T2 beam front Fig.
  • Page 414 (17) Return the T2 frame L unit to the original position. (18) Remove the two Taptite cup S M3x6 SR screws from the T2 beam rear. T2 beam rear Taptite cup S M3x6 SR Fig. 3-358 (19) Remove the two Taptite cup S M3x6 SR screws from the T2 beam rear. T2 beam rear Taptite cup S M3x6 SR Fig.
  • Page 415 (20) Remove the Taptite bind B M4x10 screw and Bush. T2 frame L unit Taptite bind B M4x10 Bush Fig. 3-360 (21) Remove the T2 paper feed frame unit from the T2 frame L unit in the direction of the arrows 21a and 21b in this order.
  • Page 416 CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT Confidential...
  • Page 417 CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS, 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. This chapter also covers how to update the firmware. CONTENTS 1.
  • Page 418 4. IF YOU REPLACE THE LASER UNIT .............4-10 4.1 Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72)....4-10 4.2 Performing the Developing Bias Voltage Correction (Maintenance Mode: Code 83) ................. 4-10 4.3 Performing the Adjustment of Inter-color Position Alignment (Maintenance Mode: Code 66) .................

  • Page 419: If You Replace The Main Pcb Assy

    (5) The download utility (FILEDG32.EXE) Copy it into the temporary folder that has been created in the C drive. (6) The Brother maintenance USB printer driver (Maintenance_Driver.zip) Copy it into the temporary folder that has been created in the C drive. Extract the copied file.

  • Page 420: Rewriting The Firmware (Panel Firmware, Sub Firmware, Main Firmware)

    Rewriting the firmware (Panel firmware, Sub firmware, Main firmware) The following two methods are available for rewriting the firmware (Sub firmware and Main firmware). - Rewriting using a computer - Rewriting using USB flash memory 1.1.1 Checking firmware version ■ Non Touch panel model Check if the firmware written on the main PCB ASSY is the latest version or not.

  • Page 421: Rewriting The Firmware Using Computer

    "Brother Maintenance USB Printer." (4) Drag and drop a program file that you want to rewrite (for instance, LZXXXX_$.upd) onto the Brother Maintenance USB Printer icon in the screen shown above. Note: After rewriting Panel firmware, Sub firmware or Main firmware is completed, the machine returns to the ready state.

  • Page 422: Rewriting The Firmware Using Usb Flash Memory

    1.1.3 Rewriting the firmware using USB flash memory If you save the program files in the USB flash memory drive and plug it into the USB direct interface, you can rewrite the firmware. Note: - You cannot write the firmware using USB flash memory in the Deep Sleep mode. Press the Start/Black button to clear the Deep Sleep mode before rewriting the firmware.

  • Page 423: Initialization Of Eeprom Of Main Pcb Assy (Maintenance Mode: Code 01)

    (2) Double-click the brusbsn.exe file which has been copied in the temporary folder to start. (3) Click the C-Laser 10Model. (4) In Port on the brusbsn screen, select the port number assigned to the Brother Maintenance USB Printer. If the port number is unknown, follow steps below.
  • Page 424 The Brother Maintenance USB Printer Properties window appears as shown below. 4) Click the Ports tab. In this example, the port number assigned to the Brother Maintenance USB Printer is USB001. (5) Enter the serial number (the fifteen digits) of the machine into the box on the “Serial No”.

  • Page 425: Sensitivity Adjustment Of Density Sensor (Maintenance Mode: Code 72)

    Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72) Make sensitivity adjustments of the density sensor in accordance with "1.4.25 Sensitivity adjustment of density sensor" in Chapter Performing the Developing Bias Voltage Correction (Maintenance Mode: Code 83) Perform developing bias voltage correction in accordance with "1.4.31 Developing bias voltage correction"...

  • Page 426: If You Replace The Registration Mark Sensor Holder Assy

    IF YOU REPLACE THE REGISTRATION MARK SENSOR HOLDER ASSY <What to do when replacing the registration mark sensor holder ASSY> - Sensitivity adjustment of density sensor (Maintenance mode: code 72) - Performing the developing bias voltage correction (Maintenance mode: code 83) - Performing the adjustment of inter-color position alignment (Maintenance mode: code 66) Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72)

  • Page 427: If You Replace The High-Voltage Power Supply Pcb Assy

    IF YOU REPLACE THE HIGH-VOLTAGE POWER SUPPLY PCB ASSY <What to do when replacing the high-voltage power supply PCB ASSY> - Sensitivity adjustment of density sensor (Maintenance mode: code 72) - Performing the developing bias voltage correction (Maintenance mode: code 83) - Performing the adjustment of inter-color position alignment (Maintenance mode: code 66) Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72)

  • Page 428: If You Replace The Laser Unit

    IF YOU REPLACE THE LASER UNIT <What to do when replacing the laser unit> - Sensitivity adjustment of density sensor (Maintenance mode: code 72) - Performing the developing bias voltage correction (Maintenance mode: code 83) - Performing the adjustment of inter-color position alignment (Maintenance mode: code 66) Sensitivity Adjustment of Density Sensor (Maintenance Mode: Code 72) Make sensitivity adjustments of the density sensor in accordance with...

  • Page 429: If You Replace The Low-Voltage Power Supply Pcb Assy

    LCD, (2) Connect the PC to the machine with the USB cable. (3) Start the “FILEDG32.EXE” and select the “Brother Maintenance USB Printer”. (4) Click the “Brother Maintenance USB Printer” icon to select. Drag the SQWAVE.PJL and drop it. 4-11...

  • Page 430: If You Replace The Drum Drive Motor

    IF YOU REPLACE THE DRUM DRIVE MOTOR <What to do when replacing the drum drive motor> - Alignment of gear phase When replacing the drum drive motor, the gears listed below are removed. Align the phase of each gear in accordance with the table and figure given below when mounting these gears so that the phases of each drum is aligned.
  • Page 431 (2) When mounting LY0198001 Drum idle gear Z64 and LY0199001 Drum idle gear Z64 first of Nos. 3 to 5, mount them by aligning their phases as shown in the figure below. Top drive ASSY Drum idle gear Z64 Drum idle gear Z64 first Drum idle gear Z64 Mark Mark...
  • Page 432 (3) When assembling Nos. 6 to 9 LY0196001 Drum coupling gear Z52, be sure to assemble them by aligning the phase as shown in the figure below. - Align the mark ( ) of the Drum coupling gear Z52 of No. 6 with the mark ( ) of the Drum idle gear Z64-26.

  • Page 433: