Brother HLL3290CDW Service Manual
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Brother HLL3290CDW Service Manual

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SERVICE MANUAL
MODEL
DCP-9030CDN/L3510CDW/L3517CDW
DCP-L3550CDW/L3551CDW
HL-L3290CDW
MFC-9150CDN/9350CDW
MFC-L3710CW/L3730CDN/L3735CDN
MFC-L3745CDW/L3750CDW/L3770CDW
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.
March 2018
SM-FAX191
8CE7*
Ver.1
Brother Laser MFC
Confidential

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Summary of Contents for Brother HLL3290CDW

  • Page 1 Brother Laser MFC SERVICE MANUAL MODEL DCP-9030CDN/L3510CDW/L3517CDW DCP-L3550CDW/L3551CDW HL-L3290CDW MFC-9150CDN/9350CDW MFC-L3710CW/L3730CDN/L3735CDN MFC-L3745CDW/L3750CDW/L3770CDW Read this manual thoroughly before maintenance work. Keep this manual in a convenient place for quick and easy reference at all times. March 2018 SM-FAX191 8CE7* Ver.1 Confidential...
  • Page 2 Open Source Licensing Remarks This product includes open-source software. Go to the manual download selection of your model's home page of Brother Solutions Center at support.brother.com to view the Open Source Licensing Remarks and Copyright Information. Copyright and License ©2018 Brother Industries, Ltd.

  • Page 3: Table Of Contents

    CONTENTS SAFETY INFORMATION CHAPTER 1 SUPPLEMENTAL SPECIFICATIONS 1. GENERAL ....................1-1 2. NETWORK CONNECTIVITY..............1-7 3. SERVICE INFORMATION ................1-7 4. SUPPLIES ....................1-8 5. MEDIA SPECIFICATIONS ...............1-13 6. FAX (ONLY FOR THE MODELS WITH FAX FUNCTION).......1-17 7. COPY......................1-18 8. SCANNER ....................1-19 CHAPTER 2 ERROR INDICATION AND TROUBLESHOOTING 1.
  • Page 4 3.2.2 Touch panel models..................2-42 3.3 Communication Errors ....................2-58 4. TROUBLESHOOTING ................2-62 4.1 Error Cause and Remedy ..................2-62 4.2 Troubleshooting for Paper Feeding Problems ............2-106 4.2.1 No paper feeding from T1................2-106 4.2.2 No paper feeding from MP tray ..............2-107 4.2.3 No paper feeding from manual feed slot ............
  • Page 5 4.10.2 Full memory....................2-143 4.11 Troubleshooting for Document Feeding Problems ..........2-144 4.11.1 No document is fed ..................2-144 4.11.2 Multiple documents are fed................2-144 4.11.3 Document jam....................2-145 4.11.4 Document becomes wrinkled............... 2-146 4.11.5 Document size is not detected correctly ............2-146 4.12 Troubleshooting for Image Defects...............
  • Page 6 9.5 Fuser cover ASSY / Fuser unit ................. 3-32 9.6 Cord hook ......................... 3-37 9.7 Side cover L......................3-38 9.8 Side cover R ......................3-39 9.9 Back cover lower ...................... 3-40 9.10 Document scanner unit................... 3-41 9.11 ADF unit (For models with ADF) ................3-44 9.11.1 ADF unit ......................
  • Page 7 9.34 Roller holder ASSY....................3-114 9.35 Paper feed unit ..................... 3-115 9.36 Paper eject ASSY....................3-117 9.37 Duplex tray ......................3-118 9.38 Low-voltage power supply PCB................3-119 9.39 Registration mark sensor L PCB / Registration mark sensor R PCB ....3-123 CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT 1.
  • Page 8 7.1 Resetting Printed Pages Counter of a PF Kit (Reset counters for consumable parts (Function code 88))........4-13 CHAPTER 5 SERVICE FUNCTIONS 1. MAINTENANCE MODE................5-1 1.1 How to Enter Maintenance Mode ................5-1 1.1.1 Method of entering maintenance mode for service personnel......5-1 1.1.2 Method of entering end-user accessible maintenance mode ......
  • Page 9 1.3.22 LED ASSY test pattern print (Function code 68) ........... 5-56 1.3.23 Print frame pattern (1-sided printing) (Function code 69) ......5-57 1.3.24 Print frame pattern (2-sided printing) (Function code 70) ......5-58 1.3.25 Color test pattern (Function code 71) ............5-59 1.3.26 Sensitivity adjustment of density sensor (Function code 72)......
  • Page 10 APPENDIX 1 SERIAL NUMBERING SYSTEM APPENDIX 2 DELETING USER SETTING INFORMATION APPENDIX 3 INSTALLING THE MAINTENANCE PRINTER DRIVER viii Confidential...

  • Page 11: Safety Information

    SAFETY INFORMATION  Definitions of Warnings, Cautions, Notes and Memos The following conventions are used in this manual: Mark Contents WARNING indicates a potentially hazardous situation which, if not avoided, could result in death or serious injuries. CAUTION indicates a potentially hazardous situation which, if not avoided, may result in minor or moderate injuries.
  • Page 12  To use the Machine Safely Please keep these instructions for later reference and read them before attempting any maintenance. If you do not follow these safety instructions, there is a possibility of a fire, electrical shock, burn or suffocation. WARNING ELECTRICAL HAZARDS Failure to follow the warnings in this section may create the risk of an electrical shock.
  • Page 13 Installation must be performed properly according to the user's guide. - Brother strongly recommends that you DO NOT use any type of extension cord. - DO NOT put a toner cartridge, a toner cartridge and drum unit assembly, or waste toner box into a fire.
  • Page 14 HOT SURFACE Immediately after using the product, some internal parts of the product will be extremely hot. Wait at least 10 minutes for the product to cool down before you touch the internal parts of the product. When you move the product, carry the product as shown in the illustration. (HL-L3290CDW/DCP-L3551CDW/MFC-L3710CW/MFC-L3750CDW/MFC-L3770CDW) To prevent possible injuries, at least two people should lift the product by holding it from the front and back.
  • Page 15 Some areas of the product can cause injury if covers (shaded) are closed with force. Take care when placing your hand in the areas shown in the illustrations, and DO NOT close the covers with force. To prevent injuries, be careful not to put your fingers in the areas shown in the illustrations. (MFC models only) When using your telephone equipment, basic safety precautions should always be followed to reduce the risk of fire, electrical shock and injury to people.
  • Page 16 Quick Setup Guide: Set the Date and Time and Set Your Station ID. If you are not able to solve a problem with your product, contact Brother Customer Service (see the Online User's Guide: Brother Numbers).
  • Page 17 - This equipment may not be used on coin service lines provided by the telephone company or connected to party lines. - Brother cannot accept any financial or other responsibilities that may be the result of your use of this information, including direct, special or consequential damages. There are no warranties extended or granted by this document.

  • Page 18: Chapter 1 Supplemental Specifications

    CHAPTER 1 SUPPLEMENTAL SPECIFICATIONS 1. GENERAL The function comparative table for models as described in this Service Manual are shown below. DCP- DCP- DCP- DCP- DCP- MFC- Model L3290CDW L3510CDW L3517CDW L3550CDW L3551CDW 9030CDN L3710CW Wired/Wireless Wireless Wired/Wireless Wired Wireless Auto Duplex Print ...
  • Page 19 DCP- DCP- DCP- DCP- DCP- MFC- Model L3290CDW L3510CDW L3517CDW L3550CDW L3551CDW 9030CDN L3710CW Warm From Less than Less than 28 sec. at 73.4F (23°C/50%) Less than Less than Up Time Sleep 24 sec. at 24 sec. at 28 sec. at Mode 73.4F 73.4F...
  • Page 20 DCP- DCP- DCP- DCP- DCP- MFC- Model L3290CDW L3510CDW L3517CDW L3550CDW L3551CDW 9030CDN L3710CW Mono Duplex Print 8/8 sides 6/6 sides per minute 8/8 sides Speed per minute (3/3 sheets per minute) per minute (A4/Letter) (4/4 (4/4 sheets per sheets per minute) minute) Full Color Duplex...
  • Page 21 MFC- MFC- MFC- MFC- MFC- MFC- MFC- Model L3730CDN L3735CDN 9150CDN L3750CDW L3745CDW L3770CDW 9350CDW Wired/Wireless Wired Wired/Wireless Auto Duplex Print  Duplex Scan  50 sheets Auto Duplex Copy  Scanning Method Dual CIS Type 3.7" TFT ColorLCD (9.3 cm / 93.4 mm) Dimension 81.65 mm x 45.36 mm (3.21 x 1.79 inch) (W x L)
  • Page 22 MFC- MFC- MFC- MFC- MFC- MFC- MFC- Model L3730CDN L3735CDN 9150CDN L3750CDW L3745CDW L3770CDW 9350CDW Warm From Less than Less than 24 sec. at 73.4F (23°C/50%) Up Time Sleep 28 sec. at Mode 73.4F (23°C/ 50%) From Less than Less than 25 sec. at 73.4F (23°C/50%) Power 29 sec.
  • Page 23 MFC- MFC- MFC- MFC- MFC- MFC- MFC- Model L3730CDN L3735CDN 9150CDN L3750CDW L3745CDW L3770CDW 9350CDW Mono Duplex Print 6/6 sides 8/8 sides per minute (4/4 sheets per minute) Speed per minute (A4/Letter) (3/3 sheets per minute) Full Color Duplex 6/6 sides 8/8 sides per minute (4/4 sheets per minute) Print Speed per minute...

  • Page 24: Network Connectivity

    2. NETWORK CONNECTIVITY Model All models Wired Network Network Node Type N/A Wireless Network Network Node Type NC-8900w type2 3. SERVICE INFORMATION DCP- DCP- DCP- DCP- DCP- MFC- Model L3290CDW L3510CDW L3517CDW L3550CDW L3551CDW 9030CDN L3710CW Machine Life 100,000 pages (A4/LTR) or 5 years Part Life (ADF) 50,000 pages or 5 years Part Life...

  • Page 25: Supplies

    4. SUPPLIES DCP- Model DCP-L3510CDW DCP-L3550CDW L3290CDW L3517CDW Toner Starter BK: Approx. 1,000 pages in accordance with ISO/IEC 19798 Cartridge Toner CMY: Approx. 1,000 pages in accordance with ISO/IEC 19798 Standard BK: Approx. For Eastern For ARL: BK: Approx. For Eastern For Eastern For Russia: Toner...
  • Page 26 DCP- Model DCP-L3551CDW MFC-L3710CW 9030CDN Toner Starter BK: Approx. 1,000 pages in BK: Approx. BK: Approx. 1,000 pages in Cartridge Toner accordance with ISO/IEC 19798 1,400 pages in accordance with ISO/IEC 19798 CMY: Approx. 1,000 pages in accordance CMY: Approx. 1,000 pages in accordance with ISO/IEC 19798 with ISO/IEC accordance with ISO/IEC 19798...
  • Page 27 MFC- MFC- MFC- Model MFC-L3750CDW L3730CDN L3735CDN 9150CDN Toner Starter BK: Approx. 1,000 BK: Approx. BK: Approx. 1,000 pages in accordance with pages in accordance Cartridge Toner 1,400 pages in ISO/IEC 19798 with ISO/IEC 19798 accordance CMY: Approx. 1,000 pages in accordance CMY: Approx.
  • Page 28 MFC- MFC- Model MFC-L3770CDW L3745CDW 9350CDW Toner Starter BK: Approx. 1,000 pages in accordance with ISO/IEC 19798 BK: Approx. CMY: Approx. 1,000 pages in accordance with ISO/IEC 19798 1,400 pages Cartridge Toner in accordance with ISO/IEC 19798 CMY: Approx. 1,300 pages in accordance with ISO/IEC 19798...
  • Page 29 MFC- MFC- Model MFC-L3770CDW L3745CDW 9350CDW When printing A4/Letter size one-sided pages in accordance with ISO/IEC 19798 Shelf life: 2 years without opening (6 months after opening) Drum Unit Life expectancy: Approximately 18,000 pages (1 page/job) The life expectancy varies according to the use condition. Shelf life: 2 years without opening (6 months after opening) The shelf life of toner cartridge and drum unit is guaranteed under the normal condition as below;...

  • Page 30: Media Specifications

    5. MEDIA SPECIFICATIONS DCP- DCP- DCP- DCP- DCP- MFC- Model L3290CDW L3510CDW L3517CDW L3550CDW L3551CDW 9030CDN L3710CW Media Standard Plain Paper, Thin Paper, Thick Paper, Recycled Paper Types Tray MP Tray Manual Plain Paper, Thin Paper, Thick Paper, Recycled Paper, Bond, Label, Feed Slot Envelope, Env.
  • Page 31 DCP- DCP- DCP- DCP- DCP- MFC- Model L3290CDW L3510CDW L3517CDW L3550CDW L3551CDW 9030CDN L3710CW Media Standard A4, Letter, A4, Letter, A5, A5 (Long Edge), A4, Letter, A4, Letter, A4, Letter, A5, A5 A6, Executive A5, A5 B5 (JIS), A5, A5 Size Tray (Long...
  • Page 32 MFC- MFC- MFC- MFC- MFC- MFC- MFC- Model L3730CDN L3735CDN 9150CDN L3750CDW L3745CDW L3770CDW 9350CDW Media Standard Plain Paper, Thin Paper, Thick Paper, Recycled Paper Types Tray MP Tray Plain Paper, Thin Paper, Thick Paper, Recycled Paper, Bond, Label, Envelope, Env. Thin, Env.Thick, Glossy Paper (only a single sheet)
  • Page 33 MFC- MFC- MFC- MFC- MFC- MFC- MFC- Model L3730CDN L3735CDN 9150CDN L3750CDW L3745CDW L3770CDW 9350CDW Media Standard A4, Letter, A4, Letter, A4, Letter, A4, Letter, A4, Letter, A4, Letter, A4, Letter, A5, A5 B5 (JIS)*, B5 (JIS), A5, A5 A5, A5 A5, A5 B5 (JIS), Size...

  • Page 34: Fax (Only For The Models With Fax Function)

    6. FAX (ONLY FOR THE MODELS WITH FAX FUNCTION) DCP- DCP- DCP- DCP- DCP- MFC- Model L3290CDW L3510CDW L3517CDW L3550CDW L3551CDW 9030CDN L3710CW Modem Speed 33,600 bps (Fax) Transmission Approx. Speed 2.5 sec. (ITU-T Test Chart, Std Resolution, JBIG) ITU-T Group Super G3 Color FAX/ Document...

  • Page 35: Copy

    7. COPY DCP- DCP- DCP- DCP- DCP- MFC- Model L3290CDW L3510CDW L3517CDW L3550CDW L3551CDW 9030CDN L3710CW Copy Mono Up to 24/25 Up to 18/19 cpm Up to 24/25 Up to 18/19 (Quiet mode: Up to 12/12 cpm) Speed Copy (Quiet mode: (Quiet mode: (Quiet mode: (A4/...

  • Page 36: Scanner

    8. SCANNER DCP- DCP- DCP- DCP- DCP- MFC- Model L3290CDW L3510CDW L3517CDW L3550CDW L3551CDW 9030CDN L3710CW Resolution Max. 1,200 x 2,400 dpi (Optical) Max. 600 x 600 dpi Resolution Max. 19,200 x 19,200 dpi (Interpolated) Scanning Scanning 27/21 ipm (A4) Speed Speed 29/22 ipm (LTR)

  • Page 37: Chapter 2 Error Indication And Troubleshooting

    CHAPTER 2 ERROR INDICATION AND TROUBLESHOOTING 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 38 WARNING DO NOT use any flammable spray or flammable solvent such as alcohol, benzine, or thinner in or around the machine. Otherwise a fire or electric shock may result. (5) Check again that the portions and parts repaired or removed during the repair work function properly when the repair is completed.

  • Page 39: Checks Before Commencing Troubleshooting

    Checks before Commencing Troubleshooting Check the following items before attempting to repair the machine. ■ Operating environment (1) The machine is placed on a flat, stable surface. (2) The machine is used in a clean environment where the temperature is between 10 °C (50 °F) and 32 °C (89.6 °F) and the relative humidity is maintained between 20 % and 80 %.
  • Page 40 ■ Cleaning Use a soft dry lint-free cloth. WARNING DO NOT use any flammable spray or flammable solvent such as alcohol, benzine, or thinner to clean the machine. DO NOT use these articles near the machine. Confidential...

  • Page 41: Overview

    OVERVIEW Cross-section Drawing 2.1.1 Printer part ■ Manual feed LED ASSY LED ASSY LED ASSY LED ASSY (Black) (Cyan) (Magenta) (Yellow) Eject roller 3 Exposure drum Exposure drum Exposure drum Exposure drum (Black) (Cyan) (Magenta) (Yellow) Belt unit <Back side> <Front side>...
  • Page 42 ■ Exposure drum LED ASSY LED ASSY LED ASSY (Black) (Cyan) (Magenta) (Yellow) LED ASSY Exposure drum Exposure drum Exposure drum (Black) (Cyan) (Magenta) (Yellow) Belt unit Eject roller 3 <Back side> <Front side> Eject roller 2 Registration rear actuator Heat roller Registration roller MP tray...

  • Page 43: Scanner Part

    2.1.2 Scanner part Document feed roller 1 Document separation roller ASSY Document scanning position actuator Document Document tray separation roller Document pick-up roller Document feed roller 2 <Left side> <Right side> Scanner glass Document eject roller Document detection actuator First side CIS unit Second side CIS unit (Only for the duplex scanning models) Fig.

  • Page 44: Paper Feeding

    Paper Feeding 2.2.1 Printer part ■ Manual feed <Back side> <Front side> Manual feed paper feed path Eject to back side Duplex path Paper feed path Fig. 2-4 Confidential...
  • Page 45 ■ <Back side> <Front side> Eject to back side MP paper feed path Duplex path Paper feed path Fig. 2-5 Confidential...

  • Page 46: Scanner Part

    2.2.2 Scanner part Document feed path <Right side> <Left side> Fig. 2-6 2-10 Confidential...

  • Page 47: Operation Of Each Part And Location Of Parts

    Operation of Each Part and Location of Parts Part name Operation T1 separation roller, Separates paper fed from the T1 into single sheets. T1 separation pad ASSY T1 paper feed actuator Detects the T1 (open / closed). (T1 paper feed sensor) Detects paper jams in the T1.
  • Page 48 Part name Operation MP registration front actuator Detects paper jams in MP part. (MP registration front sensor) Document pick-up roller Feeds document from the document tray. Document separation roller, Separates the document fed from the document tray into ADF separation pad single sheets.
  • Page 49 ■ Location of sensors and clutches Registration mark sensor R New toner sensors Registration mark sensor L Top cover sensor Manual feed paper empty sensor (Not used in the MP models) Eject sensor / Fuser cover sensor Registration clutch Registration rear T1 pick-up clutch sensor Registration front sensor...
  • Page 50 Document detection sensor ADF cover sensor Document scanning position sensor Fig. 2-8 2-14 Confidential...

  • Page 51: Block Diagram

    Block Diagram Main PCB Back cover sensor Registration clutch External temperature/ T1 pick-up clutch humidity sensor Develop release Manual feed paper Paper feed clutch empty/regist rear/ motor flat cable Develop clutch regist front sensor Paper feed motor T1 paper empty/paper Process motor feed sensor PCB High-voltage...

  • Page 52: Main Components

    Main Components Document scanner unit ADF unit Speaker unit Panel unit Modem unit Panel unit Joint cover ASSY LED ASSY Side cover R Belt unit Back cover Fuser cover ASSY Waste toner box Rear flapper High-voltage power sub ASSY supply PCB Paper eject ASSY Fuser unit Back cover lower...

  • Page 53: Error Indications

    The shaded errors hardly occur under normal use. They may be caused by noise around the installation site, variation in power supply voltage, or software failure. The errors are reset by plugging in or unplugging the AC cord if they have occurred. If an error occurs repeatedly, please contact Brother distributors. Error Refer...
  • Page 54 Error Refer Error Refer Description Description Codes Codes An error occurred during the high- 0E00 2-66 1F00 voltage power supply PCB ID check. The registration mark sensor R is dirty 1003 and cannot normally receive reflected 2-67 1F02 light. The registration mark sensor L is dirty 1004 and cannot normally receive reflected 2-67...
  • Page 55 Error Refer Error Refer Description Description Codes Codes 2602 3003 2603 3102 2604 3202 2605 3301 2701 3302 2702 3401 2703 3402 2801 3501 2802 3601 2803 3701 2804 3702 2805 3703 A temperature error occurred in the 2806 3801 2-71 external temperature/humidity sensor.
  • Page 56 Error Refer Error Refer Description Description Codes Codes 4A00 5005 Dot counter of the toner cartridge 4B01 (black) or develop roller counter 2-74 5006 reaches the upper limit soon. Dot counter of the toner cartridge 4B02 (yellow) or develop roller counter 2-74 5100 reaches the upper limit soon.
  • Page 57 Error Refer Error Refer Description Description Codes Codes The eject sensor detected that the 6004 2-76 6602 fuser cover was open. 6007 6701 Developing terminal voltage detected The internal temperature sensor 6101 that the toner cartridge (black) was 2-76 6801 detected a temperature higher than 2-79 not installed.
  • Page 58 Error Refer Error Refer Description Description Codes Codes 7001 7804 7002 7805 When feeding from the manual feed slot, the registration rear sensor does not detect the paper pass within the specified time after the manual feed paper empty 7003 7900 sensor detected the paper pass.
  • Page 59 Error Refer Error Refer Description Description Codes Codes There is no paper in the manual feed 8603 8C00 slot when printing from the manual 2-87 feed slot. The registration rear sensor detected 8604 8D01 that the paper loaded in the T1 was 2-87 smaller than the specified size.
  • Page 60 Error Refer Error Refer Description Description Codes Codes When printing from the MP tray, the An error occurred with the value 9301 MP paper empty sensor detected that 2-89 9A01 measured during auto color registration 2-95 no paper was in the MP tray. performed from the control panel.
  • Page 61 Error Refer Error Refer Description Description Codes Codes An error occurred while initializing the AB00 D100 2-103 modem. When scanning the fax, white or black Detected that the modem PCB is not AC00 correction data for the second side CIS was 2-99 D200 2-103...

  • Page 62: Error Message

    Error Message The error messages displayed on the LCD of the machine and their descriptions are shown in the table below. 3.2.1 Non touch panel models Error message Error Refer Description codes First line Second line Belt End Number of pages printed with the belt unit will reach the upper 4300 2-72...
  • Page 63 Error message Error Refer Description codes First line Second line Cartridge Open the Top Toner cartridge other than black 2100 2-69 is installed. Error Cover. Check color and position of Toner cartridge other than 2101 2-69 toner cartridges. yellow is installed. Toner cartridge other than cyan 2102 2-69...
  • Page 64 Error message Error Refer Description codes First line Second line Document Clear the scanner The document scanning position sensor detected that jam, then press the the document length was 90 cm A200 2-97 Stop Key. or more during the one-side scanning.
  • Page 65 Error message Error Refer Description codes First line Second line Drum Stop Replace the Drum Electric discharge was detected when the number of the black Unit. Black (BK)/ drum unit rotations had become 6B01 2-81 more than twice of the upper limit.
  • Page 66 Error message Error Refer Description codes First line Second line Jam MP Tray Pull out the When the paper is fed from the MP tray, after the MP jammed paper from registration front sensor detects MP Tray and press 7200 2-84 paper pass, the registration rear Start.
  • Page 67 Error message Error Refer Description codes First line Second line Media Reload correct When printing from the MP tray, paper type setting in the Mismatch paper in the MP 9201 2-89 machine does not match the Tray, then press setting in the driver. Start.
  • Page 68 Error message Error Refer Description codes First line Second line No Toner Open the Top Black toner cartridge could not communicate with the cartridge 2500 2-70 Cover, then install sensor. Toner Cartridge. Yellow toner cartridge could not communicate with the cartridge 2501 2-70 sensor.
  • Page 69 Error message Error Refer Description codes First line Second line Print Data Full Print Data is full. The memory used to store secure print data exceeded the Press stop and memory size for secure print delete the C800 2-103 data. previously stored data.
  • Page 70 Error message Error Refer Description codes First line Second line Print Unable Turn the power off An error occurred in the density sensor. and then back on 0C00 2-66 again. Print Unable Turn the power off An error occurred during the high-voltage power supply PCB and then back on 0E00...
  • Page 71 Error message Error Refer Description codes First line Second line Print Unable Turn the power off Failed to save data to a USB flash memory when the USB and then back on C100 2-102 DUMP was running. again. Print Unable Turn the power off An error occurred while initializing the modem.
  • Page 72 Error message Error Refer Description codes First line Second line Registration Registration failed. Dot counter or develop roller counter of color toner has Insufficient Toner reached the upper limit during for Registration. 9A02 2-95 auto color registration performed from the control panel.
  • Page 73 Error message Error Refer Description codes First line Second line Replace PF Number of used pages for the PF kit 1 has reached the upper 5002 2-75 Kit1 limit. Replace PF Number of used pages for the PF kit MP has reached the 5001 2-75 KitMP...
  • Page 74 Error message Error Refer Description codes First line Second line Scan Unable Turn the power off, Image processing was not completed correctly because then on again. the number of pixels required A000 2-96 for image processing is insufficient in the scanned second side data.
  • Page 75 Error message Error Refer Description codes First line Second line Size Error DX Press Stop Key. For 2-sided printing, paper size setting of the printer driver that Specify the correct was not supported by 2-sided paper and load the 9701 2-91 printing was selected.
  • Page 76 Error message Error Refer Description codes First line Second line Toner Low: M Dot counter of the toner cartridge (magenta) or develop 4B03 2-74 roller counter reaches the upper limit soon. Toner Low: Y Dot counter of the toner cartridge (yellow) or develop 4B02 2-74 roller counter reaches the upper...
  • Page 77 Error message Error Refer Description codes First line Second line Wrong Toner Open the Top Cartridge sensor detected that the toner cartridge does not 2200 2-69 Cover, then install support black was installed. Toner Cartridge. Cartridge sensor detected that the toner cartridge does not 2201 2-69 support yellow was installed.

  • Page 78: Touch Panel Models

    3.2.2 Touch panel models Error message Error Refer Description codes First line Second line Calibration Calibration failed. Dot counter or develop roller Insufficient Toner counter of color toner has reached the upper limit during for Calibration. 9802 2-92 color density adjustment performed from the control panel.
  • Page 79 Error message Error Refer Description codes First line Second line Cartridge Open the Top Toner cartridge other than black 2100 2-69 Error Cover. Check color is installed. and position of Toner cartridge other than 2101 2-69 toner cartridges. yellow is installed. Toner cartridge other than cyan 2102 2-69...
  • Page 80 Error message Error Refer Description codes First line Second line Document Clear the scanner The document scanning position sensor detected that jam, then press the document length was 90 cm Stop[x]. A200 2-97 or more during the one-side scanning. The document scanning position sensor has not detected the document passing A300...
  • Page 81 Error message Error Refer Description codes First line Second line Drum Stop Replace the Drum Electric discharge was detected 6B01 2-81 when the number of the drum Unit. Refer to the 6B02 2-81 unit rotations had become more instructions in the than twice of the upper limit.
  • Page 82 Error message Error Refer Description codes First line Second line Jam Tray 1 Remove the When printing from the T1, the jammed paper from registration front sensor does Tray 1. not detect paper pass within the 7302 2-84 specified time after the T1 paper feed sensor detected paper pass.
  • Page 83 Error message Error Refer Description codes First line Second line Media Type Reload correct When printing from the MP tray, Mismatch paper in MP Tray, paper type setting in the 9201 2-89 then press [Retry]. machine does not match the setting in the driver.
  • Page 84 Error message Error Refer Description codes First line Second line No Paper MP Reload paper in MP When paper was fed from the MP tray, the MP paper empty Tray. sensor detected that no paper 4.2.2 was in the MP tray. (At Fax / List printing) When printing from the MP tray, the MP paper empty sensor...
  • Page 85 Error message Error Refer Description codes First line Second line Out of Fax Delete unwanted The memory becomes full when 4.10.2 Fax preview is ON. Memory fax data. Print fax data from The memory becomes full when Fax preview is OFF and All settings >...
  • Page 86 Error message Error Refer Description codes First line Second line Print Unable Turn the power off Detected irregular power supply and then back on for more than 100 times. 0900 2-65 again. Print Unable Turn the power off Main PCB detected the fan and then back on failure.
  • Page 87 Error message Error Refer Description codes First line Second line Print Unable Turn the power off A temperature error occurred in the external temperature/ and then back on 3801 2-71 humidity sensor. again. Print Unable Turn the power off A communication error occurred between the controller and and then back on 3A00...
  • Page 88 Error message Error Refer Description codes First line Second line Registration Registration failed. Dot counter or develop roller counter of color toner has Insufficient Toner reached the upper limit during for Registration. 9A02 2-95 auto color registration performed from the control panel.
  • Page 89 Error message Error Refer Description codes First line Second line Replace WT Replace the Waste After the waste toner sensor detected that the waste toner Toner Box inside box was almost full, pages more the machine. 4800 2-73 than the specified number have been printed.
  • Page 90 Error message Error Refer Description codes First line Second line Short paper Open the Back The registration rear sensor detected that the paper loaded Cover and then 8D01 2-87 in the T1 was smaller than the press [Retry]. specified size. Size Error Specify the correct When printing from the T1, the...
  • Page 91 Error message Error Refer Description codes First line Second line Supplies Belt End Soon Number of pages printed with the belt unit will reach the upper limit 4300 2-72 soon. Drum End Soon Number of the black drum unit Black rotations reaches the upper limit 4001 2-72...
  • Page 92 Error message Error Refer Description codes First line Second line Toner Error One or more Toner The develop release sensor Cartridges are not detected the develop roller detected. Pull out disengagement or engagement 6E00 2-81 failure. and reinsert all 4 Toner Cartridges.
  • Page 93 Error message Error Refer Description codes First line Second line Unusable Remove the Overcurrent was caused Device Device. Turn the because a USB device that did EC00 2-105 power off and back not meet the specifications was inserted into the USB port. on again.

  • Page 94: Communication Errors

    Communication Errors Code 1 Code 2 Cause Refer to: No document set when calling. 4.11.1 Wrong fax number called. 4.13.1 No dial tone detected before dialing. 4.13.1 Busy tone detected before dialing. 4.13.1 2nd dial tone not detected. 4.13.1 No loop current detected. 4.13.1 Busy tone detected after dialing or receiving a call.
  • Page 95 Code 1 Code 2 Cause Refer to: Unable to detect flag field. 4.13.3 Carrier was OFF for 200 ms or longer. 4.13.3 Abort detected (“1” in succession for 7 bits or more). 4.13.3 Overrun detected. 4.13.3 A frame received for 3 seconds or more. 4.13.3 CRC error in answerback.
  • Page 96 Code 1 Code 2 Cause Refer to: ECM requested although not allowed. 4.13.3 Polled while not ready. 4.13.3 No document to be sent when polled. 4.11.1 Nation code or manufacturer code not correct. 4.13.1 Group number not registered for relay broad-casting was 4.13.1 specified or the number of addressees specified exceeded the maximum allowable number.
  • Page 97 Code 1 Code 2 Cause Refer to: Decoding error continued for 15 seconds or more. 4.13.3 Time-out: 13 seconds or more for one-line transmission. 4.13.3 RTC not found or carrier OFF detected for 6 seconds. 4.13.3 RTC found but no command detected for 60 seconds or 4.13.3 longer.

  • Page 98: Troubleshooting

    TROUBLESHOOTING Error Cause and Remedy ■ Error code 0101 ASIC error or motor driver error occurred. Step Cause Remedy Main PCB failure Replace the main PCB. ■ Error code 0201 Cannot detect the synchronized signal of the paper feed motor. The speed of the paper feed motor does not stabilize within the specified time.
  • Page 99 ■ Error code 0501 The center thermistor of the fuser unit has not reached the specified temperature within the specified time. Error code 0502 The center thermistor of the fuser unit has not reached the specified temperature within the specified time after it was heated normally to the certain level. Error code 0503 The center thermistor of the fuser unit detected a temperature higher than the specified value.
  • Page 100 ■ Error code 050A The hardware detected a temperature error through the center thermistor or the side thermistor of the fuser unit. Error code 050B When the center thermistor of the fuser unit was lower than the idle temperature, the side thermistor detected a temperature higher than the specified temperature.
  • Page 101 ■ Error code 0900 Detected irregular power supply for more than 100 times. <User Check> • Turn OFF the power switch. After several seconds, turn ON the power again and check that this error is reset. Step Cause Remedy Low-voltage power supply PCB Replace the low-voltage power supply failure PCB.
  • Page 102 ■ Error code 0B01 An error occurred in the high-voltage power supply PCB while operating. Error code 0B02 An error occurred in the high-voltage power supply PCB when the machine was in the ready state. <User Check> • Slide the green tab of the drum unit to left and right for two to three times to clean the corona wire for all the four colors.
  • Page 103 ■ Error code 1003 The registration mark sensor R is dirty and cannot normally receive reflected light. <User Check> • Clean the dirt on the belt unit or replace the belt unit. • Replace the waste toner box. Step Cause Remedy Dirt on the registration mark Clean the registration mark sensor R part...
  • Page 104 ■ Error code 1D01 A communication error occurred in the LED ASSY (black). Error code 1D02 A communication error occurred in the LED ASSY (yellow). Error code 1D03 A communication error occurred in the LED ASSY (magenta). Error code 1D04 A communication error occurred in the LED ASSY (cyan).
  • Page 105 ■ Error code 2100 Toner cartridge other than black is installed. Error code 2101 Toner cartridge other than yellow is installed. Error code 2102 Toner cartridge other than cyan is installed. Error code 2103 Toner cartridge other than magenta is installed. <User Check>...
  • Page 106 ■ Error code 2400 Black toner cartridge is not recognized by the cartridge sensor. Error code 2401 Yellow toner cartridge is not recognized by the cartridge sensor. Error code 2402 Cyan toner cartridge is not recognized by the cartridge sensor. Error code 2403 Magenta toner cartridge is not recognized by the cartridge sensor.
  • Page 107 ■ Error code 2E00 Could not communicate with the cartridge sensor on the machine side. Error code 2E02 Cartridge sensor on the machine side does not work. Error code 2E04 Cartridge sensor version on the machine side is not available. Step Cause Remedy...
  • Page 108 ■ Error code 4001 Number of the black drum unit rotations reaches the upper limit soon. Error code 4002 Number of the yellow drum unit rotations reaches the upper limit soon. Error code 4003 Number of the magenta drum unit rotations reaches the upper limit soon. Error code 4004 Number of the cyan drum unit rotations reaches the upper limit soon.
  • Page 109 ■ Error code 4500 Number of used pages for the fuser unit has reached the upper limit. (Printing does not stop.) Step Cause Remedy End of life of the fuser unit Replace the fuser unit. Refer to “1.3.36 Reset counters for consumable parts (Function code 88)”...
  • Page 110 ■ Error code 4B01 Dot counter of the toner cartridge (black) or develop roller counter reaches the upper limit soon. Error code 4B02 Dot counter of the toner cartridge (yellow) or develop roller counter reaches the upper limit soon. Error code 4B03 Dot counter of the toner cartridge (magenta) or develop roller counter reaches the upper limit soon.
  • Page 111 ■ Error code 4F01 The new toner sensor of the toner cartridge (black) could not detect a new cartridge properly. Error code 4F02 The new toner sensor of the toner cartridge (yellow) could not detect a new cartridge properly. Error code 4F03 The new toner sensor of the toner cartridge (magenta) could not detect a new cartridge properly.
  • Page 112 ■ Error code 6001 The top cover sensor detected that the top cover was open. <User Check> • Close the top cover. Step Cause Remedy Connection failure of the HVPS Reconnect the HVPS harness. harness Main PCB failure Replace the main PCB. ■...
  • Page 113 ■ Error code 6201 GRID terminal signal detected that the black drum unit was not installed. Error code 6202 GRID terminal signal detected that the yellow drum unit was not installed. Error code 6203 GRID terminal signal detected that the magenta drum unit was not installed. Error code 6204 GRID terminal signal detected that the cyan drum unit was not installed.
  • Page 114 ■ Electrodes location of main body Charging (Corona wire) Drum cleaner Grid Belt transfer roller Belt common Waste toner box common Waste toner sensor Waste toner box cleaning roller Fig. 2-11 ■ Electrodes location of the drum unit Fig. 2-12 2-78 Confidential...
  • Page 115 ■ Error code 6300 The electrodes of the high-voltage power supply PCB detected that no waste toner box was set. <User Check> • Re-insert the waste toner box in the correct position. Step Cause Remedy Dirt on the electrodes of the Clean the electrodes of the waste toner waste toner box and those of the box and those of the machine.
  • Page 116 ■ Error code 6901 Some fuser unit errors occurred at power-ON or upon recovery from sleep mode. Error code 6902 After the error was detected at the fuser unit, power was turned ON again and the error is being checked. (If power is turned OFF and ON after error code 6901 occurred, this code is displayed for about 15 minutes.) Step Cause...
  • Page 117 ■ Error code 6A00 Electric discharge that may be caused by dirt on the corona wire of the drum unit was detected. Error code 6B01 Electric discharge was detected when the number of the black drum unit rotations had become more than twice of the upper limit.
  • Page 118 ■ Error code 6F00 Detected that supply power is unstable (less than 100 times). <User Check> • Turn the power switch OFF and then back ON again. • Use a noise filter on the power supply. Step Cause Remedy The power supply waveform is Install a voltage stabilizer in the power incorrect supply part.
  • Page 119 ■ Error code 7100 After the registration rear sensor detects the end of paper pass and the specified period of time has passed, the eject sensor continues to detect paper pass. <User Check> • Remove the jammed paper. • Check if the back cover is open during 2-sided printing. Step Cause Remedy...
  • Page 120 ■ Error code 7200 When the paper is fed from the MP tray, after the MP registration front sensor detects paper pass, the registration rear sensor does not detect paper pass after a set period of time. <User Check> • Remove the jammed paper. •...
  • Page 121 ■ Error code 7800 After the first side is printed in 2-sided printing, the registration front sensor does not detect paper pass after a set period of time. <User Check> • Remove the jammed paper. • Close the back cover correctly. Step Cause Remedy...
  • Page 122 ■ Error code 8501 The T1 paper feed sensor detected that the T1 is open when printing from the T1 (before the registration of printing in the engine). <User Check> • Close the T1 correctly. Step Cause Remedy T1 paper feed actuator coming Reattach the T1 paper feed actuator.
  • Page 123 ■ Error code 8A01 The registration rear sensor detected that the paper fed was smaller or larger than the specified size in 2-sided printing. <User Check> • Use specified paper. Step Cause Remedy Registration rear actuator caught Reattach the registration rear actuator. in some sections of the machine Registration rear sensor failure Replace the paper feed unit.
  • Page 124 ■ Error code 8D02 The paper size indicated for printing data while the back cover is closed was under the specified value. <User Check> • Length of the paper is 114 mm or more. Step Cause Remedy Registration rear actuator caught Reattach the registration rear actuator.
  • Page 125 ■ Error code 9001 The size of paper loaded in the MP tray and the one specified from the driver are not same when printing from the MP tray. Error code 9002 The size of paper loaded in the T1 and the one specified from the driver are not same when printing from the T1.
  • Page 126 ■ Error code 9302 When printing from the T1, the T1 paper feed sensor detected that no paper was in the T1. <User Check> • Set paper in the T1. Step Cause Remedy Connection failure of the T1 Reconnect the T1 paper empty/paper feed paper empty/paper feed sensor sensor harness.
  • Page 127 ■ Error code 9701 For 2-sided printing, paper size setting of the printer driver that was not supported by 2-sided printing was selected. Error code 9702 When printing from the T1, the size of paper specified from the driver set the size which was not supported by the T1.
  • Page 128 ■ Error code 9802 Dot counter or develop roller counter of color toner has reached the upper limit during color density adjustment performed from the control panel. <User Check> • Replace the corresponding toner cartridge. Step Cause Remedy Main PCB failure Replace the main PCB.
  • Page 129 ■ Error code 9901 An error occurred with the value measured during manual color registration performed from the control panel. <User Check> • Check if the toner cartridges are set in the correct order of colors. • Replace the toner cartridge. •...
  • Page 130 ■ Error code 9903 An error occurred during patch data printing in manual color registration performed from the control panel. <User Check> • Check if the toner cartridges are set in the correct order of colors. • Replace the toner cartridge. •...
  • Page 131 ■ Error code 9A01 An error occurred with the value measured during auto color registration performed from the control panel. <User Check> • Check if the toner cartridges are set in the correct order of colors. • Replace the toner cartridge. •...
  • Page 132 ■ Error code 9A03 An error occurred during patch data printing in auto color registration performed from the control panel. <User Check> • Check if the toner cartridges are set in the correct order of colors. • Replace the toner cartridge. •...
  • Page 133 ■ Error code A200 The document scanning position sensor detected that the document length was 90 cm or more during the one-side scanning. <User Check> • Use the paper less than A4 size. • Remove the jammed document. Step Cause Remedy Document scanning position Reattach the document scanning position...
  • Page 134 ■ Error code A400 The ADF cover sensor detected that the ADF cover was open. <User Check> • Close the ADF cover correctly. Step Cause Remedy ADF cover actuator caught in Reattach the ADF cover actuator. some sections of the machine ADF cove sensor attachment Reattach the ADF cover sensor.
  • Page 135 ■ Error code A700 Color parameter in the ROM does not match the first side or second side CIS. Error code A900 A scanning error occurred while processing the scanned image. Step Cause Remedy Incorrect correction data for first Execute “Set CIS scan area (Function side or second side CIS unit code...
  • Page 136 ■ Error code AF00 Home position is still being detected even after the first side CIS unit was moved. Step Cause Remedy Dust on the CIS guide shaft Remove the dust on the CIS guide shaft. CIS drive belt coming off Reattach the CIS drive belt.
  • Page 137 ■ Error code BC00 When scanning the fax, white or black correction data for the second side CIS was not within the correct range (second time). Step Cause Remedy Incorrect correction data for Execute “Acquire white level data second side CIS unit (Function code 55)”.
  • Page 138 ■ Error code C001 Timeout occurred with access request sent to server due to incorrect server address, network disconnection, or inactive server. Error code C002 User authentication is unavailable due to incorrect user name, incorrect password, or asynchronous date and time between the machine and server. Error code C003 Cannot access to the file because the directory name is wrong, writing into directory is not permitted, or writing into file is locked or not permitted.
  • Page 139 ■ Error code C700 The memory is insufficient to expand the data of PC-Print. Error code C800 The memory used to store secure print data exceeded the memory size for secure print data. Error code C900 Storage memory was full and data could not be saved. <User Check>...
  • Page 140 ■ Error code DB00 A communication error occurred between the main ASIC and the recording ASIC. Error code E000 An error occurred in the ROM check sum. Error code E100 Program error <User Check> • Install the latest main firmware. Step Cause Remedy...
  • Page 141 ■ Error code EC00 Overcurrent was caused because a USB device that did not meet the specifications was inserted into the USB port. <User Check> • Disconnect the USB device from the USB flash memory port and turn the machine OFF. Turn the machine ON again after a while.

  • Page 142: Troubleshooting For Paper Feeding Problems

    Troubleshooting for 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. 4.2.1 No paper feeding from T1 <User Check>...

  • Page 143: No Paper Feeding From Mp Tray

    4.2.2 No paper feeding from MP tray <User Check> • Check that the paper is set in the MP tray deeply. • Check that too much paper is not loaded in the MP tray. • Check if the machine is used with the MP tray support and MP flap are in closed state. •...

  • Page 144: No Paper Feeding From Manual Feed Slot

    4.2.3 No paper feeding from manual feed slot <User Check> • Check that the paper is set into the deepest part of the manual feed slot. • Check that multiple sheets of paper are not set in the manual feed slot. •...

  • Page 145: Paper Becomes Wrinkled

    4.2.5 Paper becomes wrinkled <User Check> • Check that the paper is set in each paper tray correctly. • Flip over the paper in each paper tray or rotate the paper 180°. • Adjust each paper guide according to each paper size. •...

  • Page 146: Unable To Perform 2-Sided Printing

    4.2.8 Unable to perform 2-sided printing <User Check> • Close the back cover completely. • Close the T1 completely. • Set the driver setting to 2-sided printing. • Use A4 or Letter paper specified by the manufacturer. Step Cause Remedy Eject actuator coming off Reattach the eject actuator.

  • Page 147: Paper Jam

    4.2.9 Paper jam ■ Paper jam at the T1 <User Check> • Check that the paper is set in the T1 correctly. • Flip over the paper in the T1 or rotate the paper 180°. • Adjust each paper guide according to the paper size. •...
  • Page 148 ■ Paper jam at the MP tray <User Check> • Check that the paper is set in the MP tray correctly. • Flip over the paper in the MP tray or rotate the paper 180°. • Adjust each paper guide according to each paper size. •...
  • Page 149 ■ Paper jam at the manual feed slot <User Check> • Check that the paper is set in the manual feed slot correctly. • Flip over the paper in the manual feed slot or rotate the paper 180°. • Adjust the paper guide according to the paper size. •...
  • Page 150 ■ Paper jam at the paper feeding section at the center of the machine <User Check> • Check that the paper is set in each paper tray correctly. • Flip over the paper in each paper tray or rotate the paper 180°. •...
  • Page 151 ■ Paper jam at the eject section <User Check> • Check that the paper is set in each paper tray correctly. • Flip over the paper in each paper tray or rotate the paper 180°. • Adjust each paper guide according to the paper size. •...

  • Page 152: Troubleshooting For Image Defects

    Troubleshooting for Image Defects 4.3.1 Image defect examples Light on the whole One color is light (2-118) Faulty registration (2-120) Dark (2-120) page (2-117) All one color (2-122) Poor fixing (2-121) Completely Image distortion blank (2-121) (2-122) Vertical streaks (2-124) Dirt on back side of paper (2-123) Vertical streaks in a dark background (2-125) White horizontal stripes on one color image...

  • Page 153: Troubleshooting Image Defect

    4.3.2 Troubleshooting image defect Image defect related problems 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. ■...
  • Page 154 ■ One color is light <User Check> • Check the usage environment of the machine. Using the machine in hot-humid or cold-dry conditions can cause this problem. • Adjust the color calibration from the control panel. • Replace the drum unit with a new one. •...
  • Page 155 ■ Electrodes location of belt unit Fig. 2-16 2-119 Confidential...
  • Page 156 ■ Faulty registration <User Check> • Check whether appropriate paper type is selected on the driver. • Install the latest main firmware. Step Cause Remedy Registration rear actuator Reattach the registration rear actuator. coming off Main PCB failure Replace the main PCB. ■...
  • Page 157 ■ Poor fixing <User Check> • Check the usage environment of the machine. Using the machine in hot-humid or cold-dry conditions can cause this problem. • Clean the corona wire of the drum unit. • Replace the drum unit with a new one. •...
  • Page 158 ■ Image distortion <User Check> • Replace the belt unit with a new one. Step Cause Remedy Main PCB failure Replace the main PCB. ■ All one color <User Check> • Clean the corona wire of the drum unit. • Replace the drum unit with a new one. Step Cause Remedy...
  • Page 159 ■ Dirt on back side of paper <User Check> • This problem may disappear after printing multiple sheets of paper. • Replace the drum unit with a new one. • Replace the belt unit. • Replace the waste toner box. Step Cause Remedy...
  • Page 160 ■ Vertical streaks <User Check> • Clean the corona wire of the drum unit. • Return the corona wire cleaning tab to the “▲” position. • This problem may disappear after printing multiple sheets of paper. • Refer to <How to clean the drum unit> to remove the dirt from the exposure drum using a cotton applicator.
  • Page 161 ■ Vertical streaks in a dark background <User Check> • Clean the corona wire of the drum unit. • This problem may disappear after printing multiple sheets of paper. • Refer to <How to clean the drum unit> to remove the dirt from the exposure drum using a cotton applicator.
  • Page 162 ■ Light vertical streaks and bands on one color image <User Check> • Clean the corona wire of the drum unit. • Check that there is no dust on the toner cartridge. • Refer to <How to clean the drum unit> to remove the dirt from the exposure drum using a cotton applicator.
  • Page 163 ■ Faint print <User Check> • Check that the machine is positioned on a level surface. • Wipe the LED ASSY with a soft, lint-free cloth. (Refer to Fig. 2-15 (P2-118).) • Replace the drum unit with a new one. •...
  • Page 164 ■ White spots on one color image <User Check> • Check that the fan is not clogged. • Refer to <How to clean the drum unit> to remove the dirt from the exposure drum using a cotton applicator. • Replace the drum unit with a new one. •...
  • Page 165 ■ One color spots or dirt <User Check> • Check if damp paper is used. • Refer to <How to clean the drum unit> to remove the dirt from the exposure drum using a cotton applicator. • Replace the drum unit with a new one. •...
  • Page 166 ■ One color band <User Check> • Clean the corona wire of the drum unit. • Clean the corona wire by sliding the green tab of the drum unit to the left end. • This problem may disappear after printing multiple sheets of paper. •...
  • Page 167 (2) Turn the drum unit gear by hand so that the glued exposure drum surface comes to the front. Fig. 2-21 (3) If the position of the dirt on the drum and the dots on the print sample matches, wipe the exposure drum surface with a cotton bud until the dirt and paper dust comes off.
  • Page 168 ■ Downward fogging of solid color <User Check> • Replace the toner cartridge with a new one. Step Cause Remedy High-voltage power supply Replace the high-voltage power supply PCB. PCB failure Main PCB failure Replace the main PCB. ■ Horizontal lines <User Check>...
  • Page 169 ■ Ghost <User Check> • Check the usage environment of the machine. Using the machine in hot-humid or cold-dry conditions can cause this problem. • Check whether appropriate paper type is selected on the driver. • Select “Improve Toner Fixing” in the driver. •...
  • Page 170 ■ Unstable color density <User Check> • Make a print on a different type of paper. • Replace the belt unit with a new one. • Replace the waste toner box with a new one. • Replace the toner cartridge with a new one. •...
  • Page 171 ■ Print crease <User Check> • Check the usage environment of the machine. Using the machine in hot-humid or cold-dry conditions can cause this problem. • Change the paper to thick paper. • Check if paper is not damp. • Check if the thickness of the paper is properly set in the driver. •...

  • Page 172: Troubleshooting For Software Problems

    Troubleshooting for Software Problems The end user can solve problems pertaining to software, for instance, print cannot be made from a computer although test print and printer setting print can be made from the machine, by 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.

  • Page 173: Troubleshooting For Network Problems

    Troubleshooting for Network Problems 4.5.1 Cannot make a print through network connection <User Check> • Check the relevant section in the Network Setting Guide. • Check the network connection. • Reset the network. • Check the LAN cable. Step Cause Remedy Connection failure of the Reconnect the wireless LAN PCB connector.

  • Page 174: Troubleshooting For Control Panel Problems

    Troubleshooting for Control Panel Problems 4.6.1 Nothing is displayed on the LCD <User Check> • Turn the power switch OFF and then back ON again. • Unplug the AC cord and then plug it again. Step Cause Remedy Connection failure of the Reconnect the panel flat cable.

  • Page 175: Unable To Perform Panel Operation

    4.6.3 Unable to perform panel operation <User Check> • Turn the power switch OFF and then back ON again. Step Cause Remedy Connection failure of the panel Reconnect the panel flat cable. flat cable Connection failure of the touch Reconnect the touch panel flat cable. panel flat cable Panel PCB failure Replace the panel PCB.

  • Page 176: Troubleshooting For Toner Cartridge And Drum Unit Problems

    Troubleshooting for Toner Cartridge and Drum Unit Problems 4.7.1 New toner not detected <User Check> • Check if the supplied toner cartridge is installed. • Be sure to set a new toner cartridge. • Check that the genuine toner cartridge is set. Step Cause Remedy...

  • Page 177: Drum Error

    4.7.4 Drum error <User Check> • Clean the corona wire of the drum unit. • Replace the drum unit with a new one. Step Cause Remedy Dirt on the electrodes of the Clean the electrodes of the drum unit and drum unit and those of the those of the machine.

  • Page 178: Troubleshooting For Fuser Unit Problems

    Troubleshooting for Fuser Unit Problems 4.8.1 Fuser unit failure Step Cause Remedy Connection failure of the Reconnect the center thermistor harness. center thermistor harness Connection failure of the side Reconnect the side thermistor harness. thermistor harness Connection failure of the Reconnect the heater harness.

  • Page 179: Troubleshooting For Pcb Problems

    4.10 Troubleshooting for PCB Problems 4.10.1 Main PCB failure <User Check> • Turn the power switch OFF and then back ON again. • Install the latest main firmware. • Check the print limit ID. • Check that the print data is not damaged. Step Cause Remedy...

  • Page 180: Troubleshooting For Document Feeding Problems

    4.11 Troubleshooting for Document Feeding Problems 4.11.1 No document is fed <User Check> • Set the document properly and check that the display on the LCD changes. • Check that the number of paper set has not exceeded the upper limit in the document tray. •...

  • Page 181: Document Jam

    4.11.3 Document jam ■ Paper jam in the ADF cover <User Check> • Check that the thickness of the document is 60 to 105 g/m • Check that the paper used for the document is not shorter than 147.3 mm. •...

  • Page 182: Document Becomes Wrinkled

    ■ Paper jam in the paper eject section of the ADF <User Check> • Check that the thickness of the document is 60 to 105 g/m Step Cause Remedy Foreign object in the ADF Remove the foreign object. document eject path Document pinch roller coming Reattach the document pinch roller.

  • Page 183: Troubleshooting For Image Defects

    4.12 Troubleshooting for Image Defects 4.12.1 Defect examples Light (2-147) Faulty registration (2-148) Dark (2-148) Completely All black (2-149) blank (2-149) Vertical streaks (2-150) White streaks Partially shaded Fully tinged (2-151) (2-150) (2-151) Fig. 2-24 4.12.2 Troubleshooting according to image defect ■...
  • Page 184 ■ Faulty registration • First side (Document scanner unit) Step Cause Remedy Deviation of the scanning Execute “Fine adjustment of scan start start position position (Function code 54)”. Document scanning position Reattach the document scanning position actuator caught in some actuator.
  • Page 185 ■ Completely blank <User Check> • Check that the document is not reversed. Step Cause Remedy Incorrect white level Execute “Acquire white level data (Function correction data code 55)”. First or second side CIS flat Replace the first or second side CIS flat cable failure cable.
  • Page 186 ■ Vertical streaks <User Check> • Clean the scanner glass or first side/second side scanner glass strip. • Clean the first side/second side document hold. Step Cause Remedy Dirt inside of scanner glass Clean the inside of the scanner glass. Dirt inside of first side/second Clean the inside of the first side/second side side scanner glass strip...
  • Page 187 ■ Partially shaded <User Check> • Clean the scanner glass. Step Cause Remedy Dirt inside of scanner glass Clean the inside of scanner glass. Deformed document sponge Replace the document scanner unit. ■ Fully tinged <User Check> • Clean the scanner glass or first side/second side scanner glass strip.

  • Page 188: Troubleshooting For Fax Problems

    4.13 Troubleshooting for Fax Problems 4.13.1 Fax cannot be sent <User Check> • Check that the line cord is inserted into the socket correctly. • Check that the dial function setting (tone/pulse) is correct. • Check that the fax document is set in the ADF correctly. •...

  • Page 189: Fax Cannot Be Received

    4.13.2 Fax cannot be received <User Check> • Check that the line cord is inserted into the socket correctly. • Check that the receiving mode setting is correct. • Check that the receiver's machine works normally or the function you want to perform is equipped with the receiver's machine.

  • Page 190: Troubleshooting For Other Problems

    4.14 Troubleshooting for Other Problems 4.14.1 Cannot make print <User Check> • Turn the power switch OFF and then back ON again. • Check that the USB cable is connected to the host correctly. • Check that the LAN cable is connected to the host correctly. •...

  • Page 191: Cannot Update Firmware

    1) Turn OFF the machine. the ROM 2) Turn ON the machine while pressing the 3) Double-click the “Filedg32.exe” to start, and select “Brother Maintenance USB Printer”. 4) Drag and drop the firmware (upd file) in the FILEDG32 screen. Update is started.

  • Page 192: Chapter 3 Disassembly/Reassembly

    CHAPTER 3 DISASSEMBLY/REASSEMBLY 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 Top cover or Back cover to access any parts inside the machine, never touch the shaded parts shown in the following figures.

  • Page 193: Packing

    PACKING Option carton upper Pad upper R Pad upper L Pad bottom Carton Confidential...

  • Page 194: Screw Catalogue

    SCREW CATALOGUE Taptite bind B Screw cup Screw cup Taptite bind B M3x8 M4x12 Screw cup Taptite bind B M3x8 SR M3x10 Screw cup Taptite bind S M3x6 Taptite bind S M3x5 Taptite cup S Taptite cup S Taptite pan (washer) M3x6 SR Taptite cup S Taptite pan (washer)

  • Page 195: Screw Torque List

    SCREW TORQUE LIST Tightening torque Location of screw Screw type Q’ty N·m (kgf·cm) Fuser cover L Taptite bind B M3x10 0.5±0.05 (5±0.5) Fuser cover R Taptite bind B M3x10 0.5±0.05 (5±0.5) Fuser unit Taptite pan (washer) B 0.7±0.1 (7±1) M4x12DA Side cover L Taptite bind B M4x12 0.8±0.1 (8±1)
  • Page 196 Tightening torque Location of screw Screw type Q’ty N·m (kgf·cm) Joint side cover R Taptite bind B M4x12 0.8±0.1 (8±1) Joint side cover L Taptite bind B M4x12 0.8±0.1 (8±1) Joint back cover Taptite bind B M4x12 0.8±0.1 (8±1) LED PCB shield plate Screw cup M3x8 SR 0.45±0.05 (4.5±0.5) LED control PCB...

  • Page 197: Lubrication

    LUBRICATION The kind of the lubricating oil Lubrication point Quantity of lubrication (Maker name) FLOIL BG-10KS T1 pick-up clutch 1.5 mm dia. ball BG1.5 (Kanto Kasei) Registration clutch 1.5 mm dia. ball BG1.5 Registration clutch BG1.5 T1 pick-up clutch BG1.5: FLOIL BG-10KS (1.5 mm dia. ball) Confidential...
  • Page 198 The kind of the lubricating oil Lubrication point Quantity of lubrication (Maker name) PERMALUB BAN-5 Document separation roller 1.5 to 2.0 mm dia. ball (Nippeco) ASSY 1.5 to 2.0 1.5 to 2.0 4 mm Document separation roller ASSY 1.5 to 2.0: PERMALUB BAN-5 (1.5 to 2.0 mm dia. ball) Confidential...

  • Page 199: Overview Of Gears

    OVERVIEW OF GEARS When ordering repair parts, refer to the parts reference list. <Layout view> <Development view> <Name of gears> LY6131 PP gear Z14-51 D009RS DX joint gear Z19 D009SV DX input gear Z15 * These parts are subject to change without notice. Confidential...

  • Page 200: Harness Routing

    HARNESS ROUTING Left side of the machine (ADF unit, Document scanner unit) First side CIS flat cable FB ground wire (OR) ADF ground wire (GR) Panel ground wire (OR) ADF sensor harness ASSY (YW) Second side CIS flat cable FB motor harness (GY, WH, BL, OR) Panel flat cable First side CIS flat cable...
  • Page 201 Top side of the machine (ADF unit, Document scanner unit, Modem unit) Modem unit First side CIS flat cable Second side CIS flat cable Modem ground wire L (YW) ADF unit / Document FB motor harness (YW) scanner unit Panel ground wire (BK) ADF sensor harness (GY, WH, BL, OR)
  • Page 202 ADF unit ADF unit FFC holder ASSY Second side CIS flat cable ADF sensor harness ASSY (GY, WH, BL, OR) Document scanner unit Harness colors may be changed for any reason. 3-11 Confidential...
  • Page 203 Lower document chute Second side CIS flat cable Flat core Lower document chute 3-12 Confidential...
  • Page 204 Panel unit Key flat cable 3-13 Confidential...
  • Page 205 Document scanner unit Panel ground wire (BK) Panel flat cable Harness colors may be changed for any reason. 3-14 Confidential...
  • Page 206 Left side of the machine (LED unit, NFC PCB) Double-sided tapes LED control flat cable NFC flat cable LED control flat cable NFC flat cable Main PCB 3-15 Confidential...
  • Page 207 Left side of the machine (Modem unit) Modem ground wire (YW) Modem flat cable Main PCB Harness colors are subject to change for some reason. 3-16 Confidential...
  • Page 208 Back side of Joint cover ASSY Modem ground wire L (YW) NFC flat cable Speaker harness (BK, RD) Modem ground wire R (BR) Harness colors are subject to change for some reason. 3-17 Confidential...
  • Page 209 Main PCB, Cartridge sensor relay PCB Cartridge sensor harness C Cartridge sensor harness Y Cartridge sensor relay flat cable (RD, BK, WH, PU) (RD, BK, WH, PU) Cartridge sensor harness K Speaker harness (BK, RD) Back cover sensor Cartridge sensor harness M (RD, BK, WH, PU) harness (WH) (RD, BK, WH, PU)
  • Page 210 High-voltage power supply PCB, Fan harness, LED ground wire LED ground wire (BR) HVPS harness (WH) Develop release sensor harness (WH, BL, RD) High-voltage power supply PCB Fan harness (BR, BK, GY) Harness colors are subject to change for some reason. 3-19 Confidential...
  • Page 211 LED unit LED ASSY flat cable K LED ASSY flat cable Y LED ASSY flat cable C LED control PCB LED control flat cable LED ASSY flat cable M 3-20 Confidential...
  • Page 212 High-voltage power supply flat cable High-voltage power supply flat cable 3-21 Confidential...
  • Page 213 Process drive unit Paper feed motor flat cable 3-22 Confidential...
  • Page 214 Registration mark sensor ASSY, Eject sensor PCB Registration mark sensor L harness Registration mark sensor R PCB (RD, BK, BL, YW, WH) Registration mark sensor R harness Registration mark sensor L PCB (RD, BK, BL, YW) Registration mark sensor ASSY Registration mark sensor L harness (RD, BK, BL, YW, WH) Eject sensor PCB...
  • Page 215 Front side of the machine HVPS harness (WH) T1 paper empty/paper feed sensor harness (WH) MP registration front sensor harness (WH) MP paper empty sensor harness (OR) Regist rear/front sensor harness (WH) Harness colors are subject to change for some reason. 3-24 Confidential...
  • Page 216 LVPS A view <A view> LVPS heater harness (BK, YW, WH) B view Low-voltage power supply harness (BK, YW, WH) C view Inlet harness ASSY (BL, BR) <B view> <C view> LVPS ground wire (YW/GR) Harness colors are subject to change for some reason. 3-25 Confidential...

  • Page 217: Disassembly Flow

    DISASSEMBLY FLOW Hook (H) / Screw (S) (pcs) 9.6 Cord hook H: 0 / S: 0 9.2 T1 separation 9.34 Roller holder 9.8 Side cover R 9.3 Back cover pad ASSY ASSY H: 10 / S: 2 H: 0 / S: 0 H: 2 / S: 0 H: 0 / S: 0 9.26 High-voltage...

  • Page 218: Disassembly Procedure

    DISASSEMBLY PROCEDURE Preparation  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, - the USB flash memory drive, if connected, and - the Line cord, if connected.

  • Page 219: Paper Tray / T1 Separation Pad Assy

    Paper tray / T1 separation pad ASSY (1) Release each Hook of the T1 separation pad ASSY from the Paper tray. (2) Push both side Arms on the T1 separation pad ASSY inwards to remove the Pins, and remove the T1 separation pad ASSY from the Paper tray. (3) Remove the Separation pad spring from the Paper tray.

  • Page 220: Back Cover

    Back cover (1) Open the Back cover ASSY. (2) Remove the Back cover stopper arm L/R from the A part. A part Back cover stopper arm L Back cover ASSY A part Back cover stopper arm R <Back side> Fig. 3-3 (3) Release the Boss of the Back cover ASSY from the Bush on the Frame L to remove the Back cover ASSY.
  • Page 221 (4) Remove the Collar 5 to remove the Back cover stopper arm L from the Back cover. (5) Remove the Collar 5 to remove the Back cover stopper arm R from the Back cover. Collar 5 Back cover stopper arm L Collar 5 Back cover Back cover stopper arm R...

  • Page 222: Rear Flapper Sub Assy

    Rear flapper sub ASSY (1) Remove the Rear flapper sub ASSY from each Boss. Boss Rear flapper sub ASSY Boss <Back side> Fig. 3-6 3-31 Confidential...

  • Page 223: Fuser Cover Assy / Fuser Unit

    Fuser cover ASSY / Fuser unit (1) Remove the Taptite bind B M3x10 screw to remove the Fuser cover L. Taptite bind B M3x10 Fuser cover L <Back side> Fig. 3-7 Assembling Note: • When attaching the Fuser cover L, tighten the screw while pushing the Fuser cover L in the direction of the arrow.
  • Page 224 (2) Release the lock of the Fuser cover lock lever L/R to open the Fuser cover ASSY. Fuser cover lock lever L Fuser cover ASSY <Back side> Fuser cover lock lever R Fig. 3-9 (3) Slide the Fuser cover ASSY in the direction of the arrow and remove it to the front. Fuser cover ASSY <Back side>...
  • Page 225 (4) Remove the Taptite bind B M3x10 screw to remove the Fuser cover R. Fuser cover R Taptite bind B M3x10 <Back side> Fig. 3-11 (5) Disconnect the Center thermistor harness and the Side thermistor harness from the Eject sensor PCB. Side thermistor harness Center thermistor harness Eject sensor PCB...
  • Page 226 (6) Remove the two Taptite pan (washer) B M4x12DA screws. Pull out the Fuser unit on the Frame L side in the direction of arrow 6a and then remove it in the direction of arrow 6b. (7) Disconnect the Heater harness of the Fuser unit from the LVPS heater harness. LVPS heater harness Heater harness Fuser unit...
  • Page 227 Note: • Do not apply a physical impact or vibration to the Fuser unit. Assembling Note: • After connecting the Heater harness of the Fuser unit to the LVPS heater harness, the Heater harness is housed so that it does not come out of the Frame R. LVPS heater harness Heater harness Frame R...

  • Page 228: Cord Hook

    Cord hook (1) Remove the Cord hook. (Two locations) Cord hook <Back side> Cord hooks Fig. 3-15 3-37 Confidential...

  • Page 229: Side Cover L

    Side cover L (1) Open the Top cover and Manual feed slot or MP cover ASSY. (2) Remove the two Taptite bind B M4x12 screws. (3) Release the Hooks A, B, C, and the Hook D in order of arrow A to C, and remove the Side cover L.

  • Page 230: Side Cover R

    Side cover R (1) Remove the two Taptite bind B M4x12 screws. (2) Release the Hooks A, B, C, and the Hook D in order of arrow A to C, and remove the Side cover R. Note: Release the Hooks D while pushing them by using a flat-blade screwdriver or similar tool.

  • Page 231: Back Cover Lower

    Back cover lower (1) Release each hook to remove the Back cover lower. Hook Hooks Back cover lower <Back side> Fig. 3-18 3-40 Confidential...

  • Page 232: Document Scanner Unit

    9.10 Document scanner unit (1) Remove the four Screw cup M3x8 (black) screws to remove the Main shield cover plate ASSY. (2) Remove the three Screw cup M3x8 (black) screws to remove the ADF ground wire, the FB ground wire, and the Panel ground wire from the Main shield plate. Release the Panel ground wire from the securing fixtures.
  • Page 233 (3) Disconnect the First side CIS flat cable, the Second side CIS flat cable, and the Panel flat cable from the Main PCB. (4) Disconnect the FB motor harness and the ADF motor harness from the Main PCB. Release the FB motor harness, the FB ground wire, the ADF motor harness and the ADF ground wire from the securing fixtures.
  • Page 234 (6) Close the Top cover and Manual feed slot or MP cover ASSY. (7) Push the FB lock lever to open the Document scanner unit. (8) Release the First side CIS flat cable, the Second side CIS flat cable, and the Panel flat cable from the securing fixtures.

  • Page 235: Adf Unit (For Models With Adf)

    9.11 ADF unit (For models with ADF) 9.11.1 ADF unit (1) Remove the Taptite bind B M4x12 screw from the Hinge L. (2) Open the ADF unit. Release the Hook of the FFC holder ASSY to remove the FFC holder ASSY from the Document scanner unit.
  • Page 236 Assembling Note: • Attach the FFC holder ASSY to the ADF sensor harness ASSY and the Second side CIS flat cable as shown in the figure below. Second side CIS flat cable FFC holder ASSY Double-sided tape ADF sensor harness ASSY Fig.
  • Page 237 (6) Remove the Taptite cup B M3x10 screw to remove the Hinge R support and the Hinge R from the Hinge arm R. (7) Remove the three Taptite cup B M3x10 screws to remove the Hinge arm R from the ADF unit.

  • Page 238: Document Separation Roller Assy

    9.11.2 Document separation roller ASSY (1) Open the ADF cover. (2) Release each Hook to remove the Gear cover from the ADF unit. Gear cover ADF cover Hooks Fig. 3-27 3-47 Confidential...
  • Page 239 (3) Release the Lock of the Conductive bushing to remove the Document separation roller ASSY from the ADF unit. Document separation roller ASSY Conductive bushing Lock ADF unit Conductive bushing Fig. 3-28 3-48 Confidential...

  • Page 240: Adf Separation Holder Assy

    9.11.3 ADF separation holder ASSY (1) Remove the Taptite cup B M3x10 screw to remove the ADF separation holder ASSY from the ADF unit. Taptite cup B M3x10 ADF separation holder ASSY ADF unit Fig. 3-29 3-49 Confidential...

  • Page 241: Second Side Cis Unit / Second Side Cis Flat Cable (Only For Models With Duplex Scanning)

    9.11.4 Second side CIS unit / Second side CIS flat cable (Only for models with duplex scanning) (1) Remove the four Taptite bind B M3x10 screws. Release each Hook to remove the ADF front cover from the ADF unit. (2) Remove the six Taptite cup B M3x10 screws to remove the Upper document chute from the ADF unit.
  • Page 242 (3) Remove the Taptite cup S M3x6 SR screw. (4) Release the ADF sensor harness ASSY and ADF ground wire from the securing fixtures, and pull it out through the Hole of the Document cover. (5) Remove the Lower document chute from the Document cover, and pull out the Second side CIS flat cable through the Hole of the Document cover.
  • Page 243 (6) Release the Second side CIS flat cable from the securing fixtures. (7) Lift the Hook and slide the Second side scanner glass strip in the direction of arrow 7a. Lift the left end of the Second side scanner glass strip to remove it in the direction of arrow Second side scanner glass strip <Bottom side>...
  • Page 244 (8) Remove the Second side CIS unit from the Lower document chute, and disconnect the Second side CIS flat cable from the Second side CIS unit. (9) Remove the two CIS spacers from the Second side CIS unit. CIS spacer Second side CIS unit CIS spacer Second side...
  • Page 245 Assembling Note: • Fold the Second side CIS flat cable at the positions described below. Main PCB side Conductor 8±1 40±1 0.5 to 2 67±1 45° Sponge 173±1 203±1 45° 45° 16±1 0.5 to 2 51±1 427±1 45° 1.4±1 Mountain fold 52±1 Valley fold 15±1...

  • Page 246: Document Detection Sensor Pcb / Document Scanning Position Sensor Pcb

    9.11.5 Document detection sensor PCB / Document scanning position sensor PCB (1) Push the Hook of the Lower document chute to remove the Document detection sensor PCB from the Lower document chute. Disconnect the ADF sensor harness ASSY from the Document detection sensor PCB. (2) Release the Lock of the Conductive bushing to remove the Document feed roller 1 from the Lower document chute.

  • Page 247: Document Cover Assy (For Models Without Adf)

    9.12 Document cover ASSY (For models without ADF) (1) Remove the Hook of the Hinge L and the Hook of the Hinge R to remove the Document cover ASSY upward. Document cover ASSY Hinge R Hooks Hinge L Fig. 3-37 3-56 Confidential...
  • Page 248 (2) Remove the three Taptite bind B M4x12 screws to remove the Hinge arm L and the Hinge L from the Document cover ASSY. (3) Remove the three Taptite bind B M4x12 screws to remove the Hinge arm R and the Hinge R from the Document cover ASSY.

  • Page 249: Panel Unit

    9.13 Panel unit (1) Remove the four Taptite cup B M3x10 screws. Release each Hook to remove the Panel unit. Disconnect the Panel flat cable from the Panel PCB. Note: • When removing the Panel unit, DO NOT pull the Panel unit strongly because it is connected to the Panel flat cable.

  • Page 250: Key Pcb / Panel Pcb / Touch Panel Assy / Lcd

     For Touch panel models 9.13.1 Key PCB / Panel PCB / Touch panel ASSY / LCD (1) Disconnect the Key flat cable from the Panel PCB, and release it from the securing fixtures. (2) Remove the five Taptite cup B M3x10 screws to remove the Key PCB pressure from the Panel unit.
  • Page 251 (7) Remove the two Screw pan (S/P washer) M3x12DB screws to remove the Shield plate from the Panel unit. (8) Remove the LCD from the Panel unit. (9) Remove the LCD blind film from the Panel unit. (10) Remove the Key holder ASSY from the Panel unit. (11) Remove the Touch panel ASSY from the Panel unit.

  • Page 252: Panel Pcb / Lcd Assy

     For Non-touch panel models 9.13.2 Panel PCB / LCD ASSY (1) Release each Hook to remove the Panel PCB from the Panel unit. (2) Release the Lock to disconnect the LCD flat cable from the Panel PCB. (3) Remove the Rubber key L and the Rubber key R from the Panel unit. Panel PCB LCD flat cable Rubber key R...
  • Page 253 (4) Release each Hook to remove the LCD ASSY from the Panel unit. (5) Release each Hook to remove the Panel cover from the Panel unit. LCD ASSY Hooks Panel unit Panel cover Hooks Hooks Fig. 3-43 3-62 Confidential...

  • Page 254: Panel Flat Cable / First Side Cis Unit / First Side Cis Flat Cable

    9.14 Panel flat cable / First side CIS unit / First side CIS flat cable Note: • Disassemble in a dust-free location. (1) Remove the two Taptite cup B M3x10 screws. Release the hook to remove the Dress cover from the Document scanner bottom cover ASSY. (2) Remove the five Taptite bind B M4x12 screws to remove the Document scanner top cover from the Document scanner bottom cover ASSY.
  • Page 255 Assembling Note: • Fold the Panel flat cable at the positions described below. <Non-touch panel model> <Touch panel model> Main PCB side Reinforcing 15±1 10±1 47±1 plate Reinforcing 40±1 65±1 plate 60±1 101±1 45° 99±1 45° 45° 21±1 184±1 205±1 201±1 232±1 Sponge...
  • Page 256 Assembling Note: • If you replaced the First side CIS unit, refer to “5. IF YOU REPLACE THE ADF UNIT, FIRST SIDE CIS UNIT, SECOND SIDE CIS UNIT OR DOCUMENT SCANNER UNIT” in Chapter 4 to configure settings. (4) Slide the CIS carriage slowly to the location as shown in the figure below. (5) Open the First side CIS unit approximately 90 degrees to the CIS carriage, and remove it from the CIS carriage.
  • Page 257 (6) Remove the First side CIS flat cable from the back of the CIS carriage. Note: • Be sure to replace the Double-sided tape with a new one after taking off the Double-sided tape from the CIS carriage. (7) Remove the First side CIS flat cable from the Document scanner bottom cover ASSY. Double-sided tape CIS carriage First side CIS...
  • Page 258 <Attachment Procedure> 1) Fold the First side CIS flat cable as shown the figure below. Main PCB side Reinforcing plate 61±1 73±1 76±1 Sponge 176±1 0 to 1.5 45° 243±1 Sponge 45° 45° 2±1 16±1 4±1 21±1 45° Flat core 145±1 454±5 237±1...
  • Page 259 2) Attach the two pieces of Double-sided tape to the Document scanner bottom cover ASSY at the positions shown in the figure below. (If the old Double-sided tape remains attached, replace it with a new one.) Double-sided tapes Document scanner bottom cover ASSY Fig.
  • Page 260 7) Pass the First side CIS flat cable through the Flat core. 8) Peel the release liners of the two pieces of Double-sided tape attached to the Document scanner bottom cover ASSY, and secure the First side CIS flat cable with the tapes as shown in the figure below.

  • Page 261: Modem Flat Cable / Modem Pcb

    9.15 Modem flat cable / Modem PCB (1) Disconnect the Modem flat cable from the Main PCB, and release it from the securing fixtures. Modem flat cable Main PCB Fig. 3-52 Harness routing: Refer to “2. Top side of the machine (ADF unit, Document scanner unit, Modem unit), 8.

  • Page 262: Joint Cover Assy

    9.16 Joint cover ASSY (1) Open the Joint cover ASSY. (2) Remove the Taptite pan (washer) B M4x12DA screw to remove the LED ground wire. Pull out the LED ground wire through the Hole of the Side frame R. (3) Release each Hook to remove the Arm R from the Joint cover ASSY. Hooks Joint cover ASSY Hole of the Side frame R...
  • Page 263 (4) Disconnect the Speaker harness from the Main PCB, and release it from the securing fixtures. Speaker harness Main PCB Fig. 3-55 (5) Remove the Screw cup M3x8 (black) screw to release the Modem ground wire L from the securing fixtures. (6) Disconnect the LED control flat cable from the Main PCB.
  • Page 264 (8) Remove the Joint arm L from the Arm guide L. (9) Remove the Joint arm R from the Arm guide R. (10) Open the Joint cover ASSY approximately 90 degrees to remove it upward. Arm guide L Joint cover ASSY Arm guide R Joint arm L Joint arm R...

  • Page 265: Led Unit

    9.17 LED unit (1) Remove the eight Taptite bind B M4x12 screws to remove the Open button cover from the Joint cover ASSY. Taptite bind B M4x12 Open button cover Joint cover ASSY Fig. 3-58 3-74 Confidential...
  • Page 266 (2) Slide the Push arm in the direction of the arrow to raise the LED ASSYs. (3) Remove the Taptite cup S M3x8 SR screw to remove the Modem ground wire R from the LED unit. (4) Remove the five Taptite bind B M4x12 screws. Release the Hook to remove the LED unit from the Joint cover ASSY.

  • Page 267: Speaker Unit

    9.18 Speaker unit (1) Release the Speaker harness from the securing fixtures. (2) Remove the two Taptite bind B M4x12 screws to remove the Joint side cover R from the Joint cover ASSY. (3) Remove the Speaker spring to remove the Speaker unit from the Joint side cover R. Speaker spring Speaker unit Taptite bind B M4x12...

  • Page 268: Nfc Pcb

    9.19 NFC PCB (1) Remove the Taptite bind B M4x12 screw. Release the Hook A, and the Hooks B and C in this order to remove the Joint side cover L from the Joint cover ASSY. Joint cover ASSY Hooks C Hook A Joint side cover L Hooks B...
  • Page 269 (2) Disconnect the NFC flat cable from the NFC PCB, and then release the NFC flat cable from the securing fixtures. (3) Release each Hook to remove the Front joint cover from the Joint cover ASSY. (4) Release the Hook to remove the NFC PCB from the Front joint cover. (5) Remove the two Taptite bind B M4x12 screws to remove the Joint back cover from the Joint cover ASSY.

  • Page 270: Led Control Flat Cable / Led Control Pcb

    9.20 LED control flat cable / LED control PCB Note: • When disassembling/assembling the LED unit, attach it to the machine to prevent breakage of the LED ASSYs. (1) Remove the three Screw cup M3x8 SR screws to remove the LED PCB shield plate. Screw cup M3x8 SR LED PCB shield plate LED unit...
  • Page 271 (2) Release the Lock to disconnect the LED control flat cable from the LED control PCB. Release the LED control flat cable from the securing fixtures. (3) Release each Lock to disconnect the LED ASSY flat cable C, the LED ASSY flat cable K, the LED ASSY flat cable M, and the LED ASSY flat cable Y from the LED control PCB.
  • Page 272 Assembling Note: Fold the LED control flat cable at the positions described below. LED control PCB side Reinforcing plate 86±1 136±1 45° 31±1 45° 1±1 45° Double-sided tape 2±1 4±1 19±1 45° 45° 123±1 82±1 Mountain fold Reinforcing plate 15±1 Valley fold Main PCB side Fig.

  • Page 273: Led Assy (Y/M/C/K) / Led Assy Flat Cable (Y/M/C/K)

    9.21 LED ASSY (Y/M/C/K) / LED ASSY flat cable (Y/M/C/K) (1) Release each Hook to remove the two Holder hooks from the LED ASSY. Assembling Note: • When assembling the Holder hook, make sure to insert the Hook A of the Holder hook into the groove of the LED ASSY first, and then assemble the Hook B of the Holder hook.
  • Page 274 (3) Release each Hook to remove the FFC cover from the LED ASSY. (4) Release the Lock to disconnect the LED ASSY flat cable from the LED ASSY. LED ASSY Hooks FFC cover Hook LED ASSY flat cable Lock Fig. 3-67 Assembling Note: •...
  • Page 275 Assembling Note: • Fold each LED ASSY flat cable at the positions described below. Mountain fold Valley fold 4±1 LED ASSY side LED control PCB side <LED ASSY flat cable Y> 45° 45° 45° 21±2 17±2 44±2 33±2 38.5±2 Conductor Conductor 4±1 <LED ASSY flat cable M>...

  • Page 276: Mp Paper Guide Assy / Mp Cover Assy / Usb Host Pcb (Only For Mp Models)

    9.22 MP paper guide ASSY / MP cover ASSY / USB host PCB (Only for MP models) (1) Open the MP cover ASSY. (2) Release each Boss of the MP paper guide ASSY from each Rib of the MP cover ASSY. Pull the MP paper guide ASSY to remove it in the direction of the arrow.
  • Page 277 (3) Remove the Hook part of the MP damper spring from the MP cover ASSY. (4) Release the Boss on the left side of the MP cover ASSY, and remove the MP cover ASSY in the direction of the arrow. MP damper spring Hook part MP cover ASSY...
  • Page 278 (5) Disconnect the USB host harness from the Main PCB, and release it from the securing fixtures. Main PCB USB host harness Fig. 3-71 Harness routing: Refer to “10. Main PCB, Cartridge sensor relay PCB”. (6) Remove the two Taptite pan B M4x14 screws to remove the MP maintenance cover from the Inner front cover.
  • Page 279 (9) Remove the USB ground plate from the Boss of the Inner front cover. Remove the two Taptite bind B M3x10 screws to remove the USB holder ASSY from the Inner front cover. (10) Remove the two Screw pan (S/P washer) M3x12DB screws to remove the USB host PCB and the USB ground plate from the USB holder ASSY.

  • Page 280: Mp Roller Holder Assy (Only For Mp Models)

    9.23 MP roller holder ASSY (Only for MP models) (1) Release the Hook, and slide the MP holder bushing in the direction of arrow 1a. (2) Slide the MP roller holder ASSY in the direction of arrow 2b, and rotate it in the direction of arrow 2c to remove it upward.
  • Page 281 (3) Remove each hook, and turn the MP separation pad ASSY upright to remove it upward. (4) Remove the MP separation pad spring from each Pin. MP separation pad ASSY MP separation pad spring Hooks Pins Fig. 3-75 3-90 Confidential...

  • Page 282: Mp Unit (Only For Mp Models)

    9.24 MP unit (Only for MP models) (1) Disconnect the MP paper empty sensor harness, the MP registration sensor harness, and the MP solenoid harness from the Main PCB, and release them from the securing fixtures. MP registration sensor harness MP paper empty sensor harness Main PCB...

  • Page 283: Manual Feed Cover Assy / Usb Host Pcb (Only For Manual Feed Models)

    9.25 Manual feed cover ASSY / USB host PCB (Only for Manual feed models) (1) Disconnect the USB host harness from the Main PCB, and release it from the securing fixtures. (2) Disconnect the USB host harness from the USB host PCB. Main PCB USB host harness Fig.
  • Page 284 (4) Open the Manual feed cover ASSY. Release each Boss to remove the Manual feed cover ASSY from the Inner front cover. Inner front cover Boss Boss Manual feed cover ASSY Fig. 3-80 (5) Remove the two Taptite bind B M3x10 screws to remove the USB holder ASSY from the Inner front cover.

  • Page 285: High-Voltage Power Supply Pcb / Develop Release Sensor Pcb

    9.26 High-voltage power supply PCB / Develop release sensor PCB (1) Release the Hook to slide the HVPS FFC cover in the direction of arrow A, and release each Rib to remove the HVPS FFC cover in the direction of arrow B. Hook HVPS FFC cover Hook...
  • Page 286 (2) Remove the four HVPS chips. (3) Remove the Taptite pan (washer) B M4x12DA screw and the Taptite cup S M3x8 SR screw to remove the HVPS ground plate front. (4) Remove the Taptite pan (washer) B M4x12DA to remove the HVPS ground plate rear. HVPS ground plate front Taptite cup S M3x8 SR Taptite pan (washer)
  • Page 287 (5) Release the High-voltage power supply flat cable from the securing fixtures inside the machine and extend the folds. Remove the two Taptite bind B M4x12 screws. Release each Hook to remove the High-voltage power supply PCB. Disconnect the HVPS harness, the Develop release sensor harness, and the Fan harness from the High-voltage power supply PCB.

  • Page 288: Fan

    9.27 Fan (1) Release the Fan harness from the securing fixtures. Release each Hook to remove the Fan. <Right side> Fan harness Label Hooks Fig. 3-85 Harness routing: Refer to “11. High-voltage power supply PCB, Fan harness, LED ground wire”. Assembling Note: •...

  • Page 289: Wlan Pcb

    9.28 WLAN PCB (1) Release each Hook to remove the WLAN cap from the Line holder upper. (2) Disconnect the WLAN PCB from the Main PCB. Main PCB Line holder upper Hooks Hook WLAN PCB WLAN cap Hook Fig. 3-86 3-98 Confidential...

  • Page 290: Main Pcb

    9.29 Main PCB (1) Disconnect all the Harnesses and all the Flat cables that are connected to the Main PCB. Back cover sensor harness Cartridge sensor relay flat cable Main PCB External temperature/ humidity sensor harness Manual feed paper empty/regist rear/regist front sensor harness T1 paper empty/paper feed sensor harness...
  • Page 291 (2) Remove the three Screw cup M3x8 (black) screws to remove the Main PCB from the Process drive plate. (3) Remove the Main PCB insulation sheet from the Process drive plate. Process drive plate Main PCB insulation sheet Screw cup M3x8 (black) Main PCB Fig.

  • Page 292: Cartridge Sensor Relay Flat Cable

    9.30 Cartridge sensor relay flat cable (1) Release the Cartridge sensor relay flat cable from the securing fixtures. Disconnect the Cartridge sensor relay flat cable from the Cartridge sensor relay PCB. (2) Disconnect all the Harnesses that are connected to the Cartridge sensor relay PCB. (3) Remove the Screw cup M3x8 (black) screw.

  • Page 293: Develop Release Clutch / Process Drive Unit / High-Voltage Power Supply Flat Cable / Process Motor Flat Cable / Paper Feed Motor Flat Cable

    9.31 Develop release clutch / Process drive unit / High- voltage power supply flat cable / Process motor flat cable / Paper feed motor flat cable (1) Release the Back cover sensor harness, the Cartridge sensor harness K, the Develop release clutch K harness, the External temperature/humidity sensor harness, the T1 paper empty/paper feed sensor harness, and the Manual feed paper empty/regist rear/ regist front sensor harness from the Line holder upper.
  • Page 294 (3) Release the Duplex clutch harness, the Develop release clutch harness, the HVPS harness, the T1 pick-up clutch harness, and the Registration clutch harness from the Line holder lower. Assembling Note: • When wiring the Duplex clutch harness, make sure that the clutch connection part of the Duplex clutch harness does not stretch by pulling too much.
  • Page 295 (5) Remove the Taptite cup S M3x8 SR screw. Release the Hook to remove the DEV clutch cover. Remove the DEV release drive gear Z33 and the Develop release clutch. Develop release clutch Taptite cup S M3x8 SR DEV release drive gear Z33 DEV clutch cover Hook Fig.
  • Page 296 Assembling Note: • Raise the Damper L ASSY. Rotate the DEV release gear Z34 counterclockwise until it stops. Align the end of the DEV clutch cam with the reference line of the DEV cam cover, and then attach the DEV release drive gear Z33. If you neglect to do this, the error code 6E00 occurs.
  • Page 297 (6) Release the Cartridge sensor harness C/M/Y, the HVPS harness, the External temperature/ humidity sensor harness, the T1 paper empty/paper feed sensor harness, and the Manual feed paper empty/regist rear/regist front sensor harness from the securing fixtures. (7) Remove the two Taptite cup S M3x8 SR screws, the Taptite pan (washer) B M4x12DA screw, the six Taptite bind B M4x12 (A) screws, and the Taptite bind B M4x12 (B) screw.
  • Page 298 Assembling Note: Fold the High-voltage power supply flat cable at the positions described below. High-voltage power supply PCB side 45° 45° 45° 45° 45° 45° Mountain fold Valley fold Main PCB side Fig. 3-95 3-107 Confidential...
  • Page 299 Assembling Note: • If you removed the Process drive unit while the Fuser unit was attached on the machine, remove the Fuser unit once (refer to “9.5 Fuser cover ASSY / Fuser unit”) and reattach it after attaching the Process drive unit. The Conductive leaf spring of the Fuser unit may be deformed by the Calking shaft.
  • Page 300 (11) Release the Hook to remove the Fuser drive gear Z25 from the Process drive unit. (12) Release the Hook to open the Paper feed motor FFC holder. Release the Paper feed motor flat cable from the securing fixtures. Release the Lock to disconnect the Paper feed motor flat cable from the Paper feed motor.
  • Page 301 Assembling Note: Fold the Paper feed motor flat cable at the positions described below. Main PCB side 45° 45° 45° Mountain fold Valley fold Paper feed motor side Fig. 3-98 3-110 Confidential...

  • Page 302: T1 Pick-Up Clutch / Registration Clutch / Paper Feed Drive Unit

    9.32 T1 pick-up clutch / Registration clutch / Paper feed drive unit (1) Release the T1 pick-up clutch harness from the securing fixtures. Release the Hook to remove the T1 pick-up clutch. (2) Release the Hook of the T1 bearing 6, and then rotate it in the direction of the arrow to pull out the Sep roller drive joint.
  • Page 303 (6) Remove the five Taptite bind B M4x12 screws to remove the Paper feed drive unit. (7) Release the hook to remove the External temperature/humidity sensor PCB from the Paper feed drive unit. Paper feed drive unit Hook External temperature/ humidity sensor PCB Taptite bind B M4x12...

  • Page 304: Eject Sensor Pcb

    9.33 Eject sensor PCB (1) Disconnect the Registration mark sensor L harness, the Registration mark sensor R harness, and the Internal temperature sensor harness from the Eject sensor PCB. (2) Release the Eject sensor harness from the securing fixtures. Release the Hook to remove the Eject sensor PCB.

  • Page 305: Roller Holder Assy

    9.34 Roller holder ASSY (1) Turn the machine upside down. Note: • When turning the machine upside down, make sure to lay down the Damper L/R ASSY to prevent breakage of the Damper L/R ASSY. (2) Push the Lift arm in the direction of arrow A, and rotate the Roller holder ASSY to release the Boss.

  • Page 306: Paper Feed Unit

    9.35 Paper feed unit (1) Remove the Lift arm from the Boss while bending it in the direction of arrow 1a to slide the Lift arm in the direction of arrow 1b. Lift arm Boss Fig. 3-103 3-115 Confidential...
  • Page 307 (2) Turn the machine face up. (3) Release the HVPS harness from the Hook A and the Hook B. (4) Release the T1 paper empty/paper feed sensor harness and the Manual feed paper empty/regist rear/regist front sensor harness from the Hook A. (5) Remove the four Taptite bind B M4x12 screws to remove the Paper feed unit.

  • Page 308: Paper Eject Assy

    9.36 Paper eject ASSY (1) Raise the Arm R approximately 135 degrees to remove it from the Paper eject ASSY. (2) Pull out the Eject gear shaft. (3) Remove the three Taptite bind B M4x12 screws. As shown in the figure, use a screwdriver to release the Boss on the right side of the Paper eject ASSY, and then remove the Paper eject ASSY.

  • Page 309: Duplex Tray

    9.37 Duplex tray (1) Turn the machine upside down. Note: • When turning the machine upside down, make sure to lay down the Damper L/R ASSY to prevent breakage of the Damper L/R ASSY. (2) Remove the Taptite bind B M4x12 screw to remove the DX drive cover. (3) Slide the DX input gear Z15 and the DX drive coupling in the direction of the arrow a.

  • Page 310: Low-Voltage Power Supply Pcb

    9.38 Low-voltage power supply PCB When removing the Low-voltage power supply PCB, do not touch it within 3 minutes after disconnecting the AC cord as it may cause WARINING an electric shock due to the electric charge accumulated in the capacitor.
  • Page 311 (4) Remove the Screw pan M4x8 screw, the Washer spring 2-4, and the Washer 5 to remove the LVPS ground wire from the LVPS plate lower ASSY. (5) Remove the Inlet to release the Inlet harness ASSY from the securing fixtures. (6) Release the LVPS heater harness from the securing fixtures.
  • Page 312 (8) Release the Low-voltage power supply harness from the securing fixtures. (9) Remove the LVPS plate lower ASSY. LVPS plate lower ASSY Low-voltage power supply harness <Bottom side> Fig. 3-109 Harness routing: Refer to “17. LVPS”. 3-121 Confidential...
  • Page 313 (10) Disconnect the Low-voltage power supply harness from the Low-voltage power supply PCB. (11) Remove the three Taptite cup S M3x6 SR screws to remove the Low-voltage power supply PCB and the LVPS insulation sheet from the LVPS plate lower ASSY. Taptite cup S M3x6 SR Low-voltage power supply harness...

  • Page 314: Registration Mark Sensor L Pcb / Registration Mark Sensor R Pcb

    9.39 Registration mark sensor L PCB / Registration mark sensor R PCB (1) Turn the machine face up. (2) Release the Registration mark sensor L harness and the Registration mark sensor R harness from the securing fixtures. (3) Release the Hook, and then remove the REGI stopper from the Registration mark sensor ASSY in the direction of the arrow.
  • Page 315 (5) Slide the Registration sensor film in the direction of the arrow to remove it from the Registration mark sensor ASSY. (6) Release the Registration mark sensor L harness from the securing fixtures. Slide the Registration mark sensor L PCB in the direction of the arrow while pushing the Boss to remove it from the Registration mark sensor ASSY.

  • Page 316: Chapter 4 Adjustments And Updating Of Settings, Required After Parts Replacement

    CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT IF YOU REPLACE THE MAIN PCB ■ What to do after replacement • Configure for Country/Region and Model (Function code 74) • Installing the Firmware (Sub Firmware and Main Firmware) •...

  • Page 317: Configure For Country/Region And Model (Function Code 74)

    Configure for Country/Region and Model (Function code 74) Perform settings for a country/region as described in “1.3.28 Configure for country/region and model (Function code 74)” in Chapter Installing the Firmware (Sub Firmware and Main Firmware) 1.2.1 Checking firmware version Check whether the firmware installed on the machine is the latest version. If it is the latest version, there is no need to install the firmware.

  • Page 318: Installing Firmware

    1.2.2 Installing firmware ■ Firmware installation using USB flash memory Memo: • Firmware installation using USB flash memory is inoperable when the machine is in deep sleep mode. Release the deep sleep mode by opening / closing the top cover before the operation.
  • Page 319 Chapter (2) Connect the computer to the machine with the USB cable. (3) Open the temporary folder, double-click the “Filedg32.exe” to start, and select “Brother Maintenance USB Printer”. (4) Drag and drop a necessary program file (ex: ******_A.djf) located in the same folder to the Brother Maintenance USB Printer icon located within the FILEDG32 screen.

  • Page 320: Initializing The Eeprom Of The Main Pcb (Function Code 01)

    Initializing the EEPROM of the Main PCB (Function code 01) Initialize the EEPROM of the main PCB in accordance with “1.3.1 Initialize EEPROM parameters (Function code 01, 91)” in Chapter Adjusting Touch Panel (Function code 61) Perform adjustment of touch panel in accordance with “1.3.19 Adjust touch panel (Function code 61)”...
  • Page 321 Serial number can also be configured through the service setting tool (SvSettingTool.exe). Follow the procedure below: (1) Enter the maintenance mode. (2) Connect the machine to your computer using the USB cable. (3) Open the temporary folder and double- click “MemoryAccessTool.exe”. The screen shown on the right appears.
  • Page 322 (14) Click the [Get information] shown as (D). The Get Information screen shown on the right appears. Memo: You can check the serial number you entered even if function code 80 is executed. Refer to “1.3.32 Display machine log information (Function code 80)”.

  • Page 323: If You Replace The Registration Mark Sensor Assy Or Led Assy

    IF YOU REPLACE THE REGISTRATION MARK SENSOR ASSY OR LED ASSY ■ What to do after replacement • Continuous Adjustments of Density and Registration Sensor (Function code 73) ■ What you need to prepare None Continuous Adjustments of Density and Registration Sensor (Function code 73) Perform continuous adjustments of density and registration sensor in accordance with “1.3.27...

  • Page 324: If You Replace The Low-Voltage Power Supply Pcb

    IF YOU REPLACE THE LOW-VOLTAGE POWER SUPPLY PCB ■ What to do after replacement • Resetting Irregular Power Supply Counter of the Low-voltage Power Supply PCB (Reset counters for consumable parts (Function code 88)) ■ What you need to prepare None Resetting Irregular Power Supply Counter of the Low- voltage Power Supply PCB (Reset counters for...

  • Page 325: If You Replace The Lcd, Panel Unit Or Panel Pcb

    IF YOU REPLACE THE LCD, PANEL UNIT OR PANEL PCB ■ What to do after replacement • Adjusting Touch Panel (Function code 61) (Touch panel models only) • Checking LCD Operation (Function code 12) ■ What you need to prepare (1) Touch pen Adjusting Touch Panel (Function code 61) (Touch panel models only)

  • Page 326: If You Replace The Adf Unit, First Side Cis Unit, Second Side Cis Unit Or Document Scanner Unit

    IF YOU REPLACE THE ADF UNIT, FIRST SIDE CIS UNIT, SECOND SIDE CIS UNIT OR DOCUMENT SCANNER UNIT ■ What to do after replacement • Acquisition of White Level Data (Function code 55) • Scanning and Printing Check ■ What you need to prepare None Acquisition of White Level Data (Function code 55) Perform acquisition of white level data in accordance with...

  • Page 327: If You Replace The Fuser Unit

    IF YOU REPLACE THE FUSER UNIT ■ What to do after replacement • Resetting Printed Pages Counter of the Fuser Unit (Reset counters for consumable parts (Function code 88)) ■ What you need to prepare None Resetting Printed Pages Counter of the Fuser Unit (Reset counters for consumable parts (Function code 88)) Refer to...

  • Page 328: If You Replace A Pf Kit

    IF YOU REPLACE A PF KIT ■ What to do after replacement • Resetting Printed Pages Counter of a PF Kit (Reset counters for consumable parts (Function code 88)) ■ What you need to prepare None Resetting Printed Pages Counter of a PF Kit (Reset counters for consumable parts (Function code 88)) Refer to...

  • Page 329: Chapter 5 Service Functions

    CHAPTER 5 SERVICE FUNCTIONS MAINTENANCE MODE Maintenance mode is exclusively designed for checking, setting and adjusting the machine using the keys on the control panel. Using maintenance mode functions, you can conduct operational checks of sensors or test printing, display the log information or error codes, and change the worker switches (WSW) etc.

  • Page 330: Method Of Entering End-User Accessible Maintenance Mode

    1.1.2 Method of entering end-user accessible maintenance mode The maintenance mode functions should only be accessed by service personnel. However, end users are allowed to use some of these functions under the guidance of service personnel over the phone. End users can only use the functions shaded in the table “1.2 List of Maintenance Mode Functions”...

  • Page 331: List Of Maintenance Mode Functions

    List of Maintenance Mode Functions Function Function Refer to: code Initialize EEPROM parameters 1.3.1 (5-4) Transition to shipping state 1.3.2 (5-5) ADF performance test 1.3.3 (5-6) Monochrome print quality test pattern 1.3.4 (5-7) Set worker switches (WSW) 1.3.5 (5-8) Print worker switch (WSW) setting data 1.3.5 (5-11) Check LCD operation 1.3.6 (5-12)

  • Page 332: Details Of Maintenance Mode Functions

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

  • Page 333: Transition To Shipping State (Function Code 03)

    1.3.2 Transition to shipping state (Function code 03) This function contains display soft switch Check SUM, change ON/OFF setting of special function at start up and transfer to the shipping state. Display soft switch Check SUM is function for sales correspondence or production process and not used for the service. Only change ON/OFF setting of special function at start up and transfer to the shipping state can used for the service.

  • Page 334: Adf Performance Test (Function Code 08)

    ■ Transfer to the shipping state < Function > This function is to transfer the machine to the shipping state when used new spare Main PCB for repair, etc. When not perform this function to the new spare Main PCB and leave, some software will be unavailable such as MPS applications or BrAdmin tool.

  • Page 335: Monochrome Print Quality Test Pattern (Function Code 09)

    1.3.4 Monochrome print quality test pattern (Function code 09) < Function > This function is used to print test patterns to check any missing image and print quality. < Operating Procedure > (1) For models with touch panel Press the [0], and then the [9] in the initial state of maintenance mode. “MAINTENANCE 09”...

  • Page 336: Set Worker Switches (Wsw) And Print Worker Switch Setting Data (Function Code 10, 11)

    1.3.5 Set worker switches (WSW) and print worker switch setting data (Function code 10, 11) [1] Set worker switches (Function code 10) < Function > The worker switches shown in the table below can be used to set the function to satisfy various requirements.
  • Page 337 Function Function WSW64 Language / default paper size WSW81 Changing emulation function setting enable/disable setting WSW65 Paper support setting WSW82 AirPrint Icon No. setting WSW66 Change of the setting is prohibited WSW83 Change of the setting is prohibited WSW67 Change of the setting is prohibited WSW84 Change of the setting is prohibited WSW68...
  • Page 338 < Operating Procedure > (1) For models with touch panel Press the [1], and then the [0] in the initial state of maintenance mode. “WSW00” is displayed on the LCD. For models without touch panel Press the [▲] or [▼] in the initial state of maintenance mode to display “MAINTENANCE 10”...
  • Page 339 [2] Print worker switch (WSW) setting data (Function code 11) < Function > This function is used to print the worker switch settings and details. < Operating Procedure > (1) For models with touch panel Press the [1] twice in the initial state of maintenance mode. For models without touch panel Press the [▲] or [▼] in the initial state of maintenance mode to display “MAINTENANCE 11”...

  • Page 340: Check Lcd Operation (Function Code 12)

    1.3.6 Check LCD operation (Function code 12) < Function > This function is used to check that the LCD on the control panel is operating normally. < Operating Procedure > For models with touch panel (1) Press the [1], and then the [2] in the initial state of maintenance mode. LCD displays shown as the chart below.
  • Page 341 For models without touch panel (1) Press the [▲] or [▼] in the initial state of maintenance mode to display “MAINTENANCE 12” on the LCD, and press the [OK]. Displays shown in the figure below appear on the LCD. (2) Each press of the [Start] cycles through the displays as shown in the figure below. (3) Press the [Stop], and the machine returns to the initial state of maintenance mode.

  • Page 342: Check Control Panel Key Operation (Function Code 13)

    1.3.7 Check control panel key operation (Function code 13) < Function > This function is used to check that keys on the control panel are operating normally. < Operating Procedure > (1) For models with touch panel Press the [1], and then the [3] in the initial state of maintenance mode. “00” is displayed on the LCD.

  • Page 343: Save The Netconfig Information (Function Code 18)

    1.3.8 Save the NetConfig information (Function code 18) < Function > This function is to save the NetConfig information to USB flash memory. < Operating Procedure > (1) Press the [1], and then the [8] in the initial state of maintenance mode. “NETCONFIG” is displayed on the LCD.

  • Page 344: Display Software Version (Function Code 25)

    1.3.9 Display software version (Function code 25) < Function > This function is used to check the version information of the firmwares and programs, or check sum information. < Operating Procedure > (1) For models with touch panel Press the [2], and then the [5] in the initial state of maintenance mode. “TOTAL: Ver *” is displayed on the LCD.

  • Page 345: Check Sensor Operation (Function Code 32)

    1.3.10 Check sensor operation (Function code 32) < Function > This function is used to check whether the sensors are operating normally. < Operating Procedure > (1) For models with touch panel Press the [3], and then the [2] in the initial state of maintenance mode. Following example is displayed on the LCD.
  • Page 346 ■ Location of sensors Top cover sensor Manual feed paper empty sensor (Not used in the MP models) Eject sensor / Fuser cover sensor Registration rear sensor Registration front sensor Back cover sensor Internal temperature sensor T1 paper feed sensor External temperature/ humidity sensor Fig.
  • Page 347 Document detection sensor ADF cover sensor Document scanning position sensor Fig. 5-7 5-19 Confidential...

  • Page 348: Display Lan Connection Status (Function Code 33)

    1.3.11 Display LAN connection status (Function code 33) < Function > This function is used to check the connection status of the wired LAN. < Operating Procedure > (1) For models with touch panel Press the [3] twice in the initial state of maintenance mode. For models without touch panel Press the [▲] or [▼] in the initial state of maintenance mode to display “MAINTENANCE 33”...

  • Page 349: Set Pc-Print Functions (Function Code 43)

    1.3.12 Set PC-Print functions (Function code 43) < Function > This function is used to change the settings of the various print functions summarized in the table below. < Operating Procedure > (1) For models with touch panel Press the [4], and then the [3] in the initial state of maintenance mode. “Manual Feed” is displayed on the LCD.
  • Page 350 Description Set value Default P-Pos Y-Offset Print position offset in Y -500 to 500 (1/300 dpi) (portrait) direction (1/300 dpi) Auto FF Auto Form Feed setting On/Off Auto FF Time Time until Auto Form Feed 1 to 99 seconds 5 seconds timeout FF Suppress Blank page skip setting...
  • Page 351 Detail description Auto I/F Time Change the interface open time. This setting becomes valid when PC-Print is instructed, and becomes invalid when PC-Scan or Remote-SetUp is instructed. Media Type Valid for printing from the computer only. When the Paper type is set on the computer, the setting on the computer supersedes the setting on the LCD.

  • Page 352: Change Usb No. Return Value / Switching Dither Pattern

    1.3.13 Change USB No. return value / Switching Dither Pattern / Switching of ON/ OFF of DirectPrint Color mode-Improve Gray Color / Switching of timing to execute Auto Registration / Adjust left-end print position / Adjust upper- end print position / Change of the transfer current setting / Change of ghost reduction setting / Change of function switch / Change of drum developing bias correction value in endurance deterioration of drum / Switching of black toner discharge compensation (Function code 45)
  • Page 353 ■ Switching Dither Pattern < Function > This function is to switch the dither pattern when printed letters and/or slanted lines are not smooth, and thin lines are rough or uneven. Description PS.DitherType=0 Dither Pattern 0 is selected. (A dither pattern which improves roughness of letters and slanted lines) (default) PS.DitherType=1 Dither Pattern 1 is selected.
  • Page 354 ■ Switching of ON/OFF of DirectPrint Color mode-Improve Gray Color < Function > This function is to switch ON/OFF of the print control for the gray color when other colors are slightly blended in the gray color or the gray color is uneven upon printing. Description DP.ImpGray=ON DirectPrint Color mode - Improve Gray Color.
  • Page 355 ■ Switching of timing to execute Auto Registration < Function > Relative displacement between Cyan, Magenta, Yellow, and Black is detected using the registration mark sensor, and the Auto Registration is executed at the timing when the displacement value exceeds the stipulated threshold value. This function is to switch the threshold value which is used as the timing to execute Auto Registration.
  • Page 356 ■ Adjust left-end print position < Function > In the event that the left-end print start position deviates, use this function to adjust the position left and right. The adjustable range is -100 to 750 (1 unit = 0.084 mm = 300 dpi). <...
  • Page 357 ■ Adjust upper-end print position < Function > In the event that the upper-end print start position deviates, use this function to adjust the position up and down. Adjustable range is -50 to 50 (1 unit = 0.084 mm = 300 dpi). <...
  • Page 358 ■ Change of the transfer current setting (Only for Japan models) < Function > Dots appeared when hagaki printing is performed can be alleviated by changing the transfer current setting. < Operating Procedure > (1) For models with touch panel Press the [4], and then the [5] in the initial state of maintenance mode.
  • Page 359 ■ Change of ghost reduction setting < Function > This function is a mode to reduce the level of ghost when it appears in low temperature and high humidity environment. If this function is turned ON, however, spots and dirt may appear on print.
  • Page 360 ■ Switching of black toner discharge compensation < Function > When this setting is ON, in order to improve the fogging of the black printing, if a certain number of sheets are printed after replacing the black toner cartridge, the black toner is discharged at the next printing and before printing.

  • Page 361: Adjust Printable Range For Each Speed Level (Function Code 46)

    1.3.14 Adjust printable range for each speed level (Function code 46) < Function > This function is to adjust the printing position in horizontal / vertical direction. Position can be adjusted in 11 steps from -0.5% to 0.5% (Printing width gets smaller when the value is negative).
  • Page 362 ■ Print adjustment test pattern Fig. 5-8 5-34 Confidential...

  • Page 363: Transfer Received Fax Data / Log Information (Fax Models Only) (Function Code 53)

    1.3.15 Transfer received fax data / log information (fax models only) (Function code 53) < Function > When the machine is unable to print the received fax data due to an error in the printing mechanism, this function is used to transfer the data to another machine. The communication management report, communication list, or machine log information can also be transferred.
  • Page 364 ■ Cover page example Job number to identify the transmission Total number of pages to be transferred Station ID registered in the sender machine Fax number of the sender machine Telephone number of the sender machine Transfer date and time Model code Boot ROM information ROM information...

  • Page 365: Fine-Tune Scanning Position (Function Code 54)

    1.3.16 Fine-tune scanning position (Function code 54) <Function> This function is used to adjust the scanning start/end positions. <Operating Procedure> (1) For models with touch panel Press the [5], and then the [4] in the initial state of maintenance mode. “SCAN START ADJ”...

  • Page 366: Acquire White Level Data And Set Cis Scan Area (Function Code 55)

    1.3.17 Acquire white level data and set CIS scan area (Function code 55) <Function> This function is used to acquire the white level of the CIS unit, and store this data and the scan area in the EEPROM of the main PCB. <Operating Procedure>...

  • Page 367: Check Consumables Function (Function Code 57)

    1.3.18 Check consumables function (Function code 57) <Function> This function is used to determine whether the toner cartridge is supported, cartridge’s color, destination, and size with the cartridge sensor. <Operating Procedure> ■ Whether the toner cartridge is supported or not For models with touch panel (1) Press the [5], and then [7] in the initial state of maintenance mode.
  • Page 368 For models without touch panel (1) Press the [▲] or [▼] in the initial state of maintenance mode to display “MAINTENANCE 57” on the LCD, and press the [OK]. “IC_ACT ALL” is displayed on the LCD. (2) Press the [▲] or [▼] to display the toner cartridge to be authorized on the LCD. If you want to select all colors: “IC_ACT ALL”...
  • Page 369 ■ Check toner cartridge’s color For models with touch panel (1) Press the [5], and then [7] in the initial state of maintenance mode. “IC_ACT ALL” is displayed on the LCD. (2) Press the [2]. “IC_COL ALL” is displayed on the LCD. (3) Press the [◄] or [►] to display the toner cartridge to be authorized on the LCD.
  • Page 370 ■ Check toner cartridge’s destination For models with touch panel (1) Press the [5], and then [7] in the initial state of maintenance mode. “IC_ACT ALL” is displayed on the LCD. (2) Press the [3]. “IC_AREA ALL” is displayed on the LCD. (3) Press the [◄] or [►] to display the toner cartridge to be authorized on the LCD.
  • Page 371 ■ Check toner cartridge’s size For models with touch panel (1) Press the [5], and then [7] in the initial state of maintenance mode. “IC_ACT ALL” is displayed on the LCD. (2) Press the [4]. “IC_SIZE ALL” is displayed on the LCD. (3) Press the [◄] or [►] to display the toner cartridge to be authorized on the LCD.
  • Page 372 ■ Check cartridge sensor's version For models with touch panel (1) Press the [5], and then [7] in the initial state of maintenance mode. “IC_ACT ALL” is displayed on the LCD. (2) Press the [5]. “IC_VER BLACK” is displayed on the LCD. (3) Press the [◄] or [►] to display the toner cartridge to be authorized on the LCD.
  • Page 373 ■ Check toner cartridge’s communication For models with touch panel (1) Press the [5], and then [7] in the initial state of maintenance mode. “IC_ACT ALL” is displayed on the LCD. (2) Press the [0]. “IC_TX ALL” is displayed on the LCD. (3) Press the [◄] or [►] to display the toner cartridge to be authorized on the LCD.

  • Page 374: Adjust Touch Panel (Function Code 61)

    This adjustment requires a touch pen with a thin tip. A commercially available touch pen designed for electronic dictionaries or personal digital assistance (PDA) can be used. If one is not available at hand, order a “Touch pen” from Brother's parts list. < Operating Procedure >...

  • Page 375: Adjustment Of Color Registration (Adjustment Of Inter-Color Position Alignment) (Function Code 66)

    1.3.20 Adjustment of color registration (Adjustment of inter-color position alignment) (Function code 66) < Function > This function allows service personnel to forcibly activate the adjustment of color registration (adjustment of inter-color position alignment) function which is usually executed automatically under a specified condition.
  • Page 376 ■ Adjustment of inter-color position alignment without registration sensor calibration (auto) < Operating Procedure > (1) For models with touch panel Press the [6] twice in the initial state of the maintenance mode. “REGISTRATION” is displayed on the LCD. For models without touch panel Press the [▲] or [▼] in the initial state of maintenance mode to display “MAINTENANCE 66”...
  • Page 377 ■ Error message list Error message Remedy FAILED REGIST Press the [Start] or [Mono Start] to clear the error. Perform the Adjustment of inter-color position alignment (auto) again. If the ERR_REG_AB_MA_LY error recurs, clean the belt unit and the drum unit and then perform the adjustment again.
  • Page 378 ■ Printing of misregistration correction chart < Operating Procedure > (1) For models with touch panel Press the [6] twice in the initial state of the maintenance mode. “REGISTRATION” is displayed on the LCD. For models without touch panel Press the [▲] or [▼] in the initial state of maintenance mode to display “MAINTENANCE 66”...
  • Page 379 ■ Adjustment of inter-color position alignment including registration sensor calibration (auto) < Operating Procedure > (1) For models with touch panel Press the [6] twice in the initial state of the maintenance mode. “REGISTRATION” is displayed on the LCD. For models without touch panel Press the [▲] or [▼] in the initial state of maintenance mode to display “MAINTENANCE 66”...

  • Page 380: Continuous Print Test (Function Code 67)

    1.3.21 Continuous print test (Function code 67) < Function > This function is used to conduct paper feed and eject tests while printing patterns. < Operating Procedure > (1) For models with touch panel Press the [6], and then the [7] in the initial state of maintenance mode. “SELECT: K 100%” is displayed on the LCD.
  • Page 381 <Paper size> Description SELECT: A4 SELECT: LETTER Letter SELECT:ISOB5 ISO B5 SELECT:JISB5 JIS B5 SELECT:A5 SELECT:A5L SELECT:JISB6 JIS B6 SELECT:A6 SELECT:EXECUTE Executive size SELECT:LEGAL Legal size SELECT:FOLIO Folio size SELECT:HAGAKI Postcard size * * Supports only for TRAY1 SX, MP TRAY SX and AUTO SX. <Print specification>...
  • Page 382 <Print type> Description SELECT: TRAY1 SX 1-sided printing from T1 SELECT: MP SX 1-sided printing from MP tray SELECT: MF SX 1-sided printing from manual feed slot SELECT: TRAY1 DX 2-sided printing from T1 *1 *2 SELECT: MP DX 2-sided printing from MP tray *1 *2 SELECT: MF DX 2-sided printing from manual feed slot...
  • Page 383 ■ Print pattern SELECT: K 100% SELECT: C 100% SELECT: M 100% SELECT: Y 100% SELECT: W 100% SELECT: R 100% SELECT: G 100% SELECT: B 100% SELECT: KCMY1% SELECT: KCMY5% SELECT: Lattice SELECT: Total (When Print type is DX) SELECT: Total (When Print type is SX) Fig.

  • Page 384: Led Assy Test Pattern Print (Function Code 68)

    1.3.22 LED ASSY test pattern print (Function code 68) < Function > This function is used to print the LED ASSY test patterns and check if there is any failure in the LED ASSY. < Operating Procedure > (1) For models with touch panel Press the [6] and [8] in this order in the initial state of the maintenance mode.

  • Page 385: Print Frame Pattern (1-Sided Printing) (Function Code 69)

    1.3.23 Print frame pattern (1-sided printing) (Function code 69) < Function > This function is used to print the frame pattern on single side of the paper to check for printing flaws and omission. < Operating Procedure > (1) Set the paper specified in the default paper settings (A4 or Letter) to the T1. (2) For models with touch panel Press the [6], and then the [9] in the initial state of maintenance mode.

  • Page 386: Print Frame Pattern (2-Sided Printing) (Function Code 70)

    1.3.24 Print frame pattern (2-sided printing) (Function code 70) < Function > This function is used to print the frame pattern on both sides of the paper to check for printing flaws and omission. < Operating Procedure > (1) Set the paper specified in the default paper settings (A4 or Letter) to the T1. (2) For models with touch panel Press the [7], and then the [0] in the initial state of maintenance mode.

  • Page 387: Color Test Pattern (Function Code 71)

    1.3.25 Color test pattern (Function code 71) < Function > This function is used to print the test pattern to check whether the develop roller or exposure drum is dirty or damaged. < Operating Procedure > (1) For models with touch panel Press the [7], and then the [1] in the initial state of maintenance mode.
  • Page 388 <Print pattern> Description K/W/Y/M/C Total five sheets of one sheet for each color with full page print mode Magenta Black Cyan Yellow MCYK H 4-color horizontal band MCYK V 4-color vertical band <Paper size> Description SELECT: LETTER Letter SELECT: A4 SELECT:ISOB5 ISO B5 SELECT:JISB5...
  • Page 389 <Print page> Description SELECT: 1PAGE 1-page printing SELECT: CONTINUE Continuous printing * * Press the [X] or [Stop] to end the continuous printing. <Error display> Error display Remedy Replace Toner Replace the toner cartridge and press the [Start] or [Mono Start] to release the error.

  • Page 390: Sensitivity Adjustment Of Density Sensor (Function Code 72)

    1.3.26 Sensitivity adjustment of density sensor (Function code 72) < Function > This function is used to print the patch data for density sensor sensitivity adjustment on the belt unit and measure the density with the density sensor. The characteristics of the density sensor are calculated based on the value measured by the density sensor, and the parameter for correcting developing bias voltage is adjusted.

  • Page 391: Continuous Adjustments Of Density / Registration Sensor (Function Code 73)

    1.3.27 Continuous adjustments of density / registration sensor (Function code 73) < Function > This function is used to perform the following functions consecutively: Sensitivity adjustment of density sensor (Function code 72), Developing bias voltage correction (Function code 83), and Adjustment of color registration (Adjustment of inter-color position alignment) including registration sensor calibration (Function code 66).

  • Page 392: Configure For Country/Region And Model (Function Code 74)

    1.3.28 Configure for country/region and model (Function code 74) < Function > This function is used to customize the machine according to language, function settings, and worker switch settings. < Operating Procedure > For models with touch panel (1) Press the [7], and then the [4] in the initial state of maintenance mode. The spec code currently set is displayed on the LCD.
  • Page 393 MODEL Country Code Country Code (Detail) DCP-L3550CDW CEE-General 1104 France/Belgium/Netherlands 1158 Belgium 1108 France 7104 Netherlands 9104 Others 1104 Germany 0153 Austria 0114 Germany 0103 Italy/Iberia 1104 Pan-Nordic 1104 Russia 5148 Switzerland 3104 1104 DCP-L3551CDW Brazil 0142 Chile 0136 Gulf 0174 Gulf 0141 South Africa...
  • Page 394 MODEL Country Code Country Code (Detail) MFC-L3730CDN CEE-General 0488 Bulgaria 0432 Croatia 0481 Czech 0437 Hungary 0438 Poland 0439 Romania 0433 Slovakia 0486 Slovenia 0482 Others 0450 France/Belgium/Netherlands 0458 Belgium 0408 France 0405 Netherlands 0409 Others 0450 Germany 0453 Austria 0414 Germany 0403...
  • Page 395 MODEL Country Code Country Code (Detail) MFC-L3750CDW Australia 0706 Brazil 0742 Canada 0701 Chile 0736 France/Belgium/Netherlands 0758 Belgium 0708 France 0705 Netherlands 0709 Others 0750 Germany 0753 Austria 0714 Germany 0703 Gulf 0774 Gulf 0741 South Africa 0724 Turkey 0725 Italy/Iberia 0766 Italy 0716...
  • Page 396 Spain 0815 New Zealand 0827 Philippines 0821 Russia 0848 Singapore 0840 Switzerland 3810 U.S.A 0801 0804 Note: • The spec code list above is current as of March 2018. • Please contact Brother distributors for the latest information. 5-68 Confidential...

  • Page 397: Print Maintenance Information (Function Code 77)

    1.3.29 Print maintenance information (Function code 77) < Function > This function is used to print the maintenance information, such as remaining amount of consumables, the number of replacements, and counter information. < Operating Procedure > (1) For models with touch panel Press the [7] twice in the initial state of maintenance mode.
  • Page 398 Model name Total fax pages Color / Mono (Total / Duplex) Serial number Total pages printed by other methods Color / Mono (Total / Duplex) Model code Accumulated average coverage by each toner cartridge Spec code Average coverage by current each toner cartridge Switch check sum (factory use) and Average coverage by the previous each toner cartridge comparison of default / current value...

  • Page 399: Check Fan Operation (Function Code 78)

    1.3.30 Check fan operation (Function code 78) < Function > This function is used to check that the fan is operating normally. Switch the setting among rotation speed 100%, 67%, 50%, and OFF. Name Description Emits the heat in the fuser unit. <...

  • Page 400: Delete Fax Data (Function Code 79)

    1.3.31 Delete fax data (Function code 79) < Function > This function is used to delete fax data in the machine memory. < Operating Procedure > (1) Press the [7], and then the [9] in the initial state of maintenance mode. “BACKUP CLEAR” is displayed on the LCD and fax data in the machine memory is deleted.

  • Page 401: Display Machine Log Information (Function Code 80)

    1.3.32 Display machine log information (Function code 80) < Function > This function is used to display the log information on the LCD. < Operating Procedure > (1) For models with touch panel Press the [8], and then the [0] in the initial state of maintenance mode. “MACERR_01:****” is displayed on the LCD (**** indicates error code).
  • Page 402 Description DX_PG:00000000 Paper input for duplex tray TTL_CO:00000000 Total number of color pages printed TTL_MO:00000000 Total number of monochrome pages printed DX_CO:00000000 Total number of two-sided color pages printed DX_MO:00000000 Total number of two-sided monochrome pages printed TTLCOPY:00000000 Total pages copied DX_COPY:00000000 Total pages copied on both sides CL_COPY:00000000...
  • Page 403 Description KDRUM:00000000 Number of black drum rotations CTN_RND: 00000000 Number of cyan develop roller rotations MTN_RND: 00000000 Number of magenta develop roller rotations YTN_RND: 00000000 Number of yellow develop roller rotations KTN_RND: 00000000 Number of black develop roller rotations MP_PG:00000000 Paper input for MP tray (MP models only) MN_PG:00000000 Paper input for manual feed slot (Manual feed models only)
  • Page 404 Description BELT_CH:0000 Number of times that the belt unit has been replaced FUSR_CH:0000 Number of times that the fuser unit has been replaced PFMP_CH:0000 Number of times that the PF kit MP has been replaced PFK1_CH:0000 Number of times that the PF kit 1 has been replaced CTN_PG1:00000000 Number of pages printed from the currently installed cyan toner cartridge...
  • Page 405 Last 12 digits of the serial number are displayed. The serial number can be changed according to the procedures below. For models with touch panel 1) While the serial number is displayed, press the [9], [4], [7], and [5] in this order to enter the edit mode.

  • Page 406: Display Machine Error Code (Function Code 82)

    1.3.33 Display machine error code (Function code 82) < Function > This function is used to display the latest error code on the LCD. < Operating Procedure > (1) For models with touch panel Press the [8], and then the [2] in the initial state of maintenance mode. “MACHINE ERR XXXX”...

  • Page 407: Developing Bias Voltage Correction (Function Code 83)

    1.3.34 Developing bias voltage correction (Function code 83) < Function > This function performs developing bias voltage correction to fix the density of each color toner when printed color is not correct. Note: Before this function is performed, there is a need that the “1.3.26 Sensitivity adjustment of density sensor (Function code 72)”...

  • Page 408: Send Communication Log Information To Telephone Line (Function Code 87)

    1.3.35 Send communication log information to telephone line (Function code 87) < Function > This function is used to send the error list to service personnel at a remote service station when a fax communication problem has occurred in the user's machine. Receiving the error list allows the service personnel to analyze the problem current in the user's machine.

  • Page 409: Reset Counters For Consumable Parts (Function Code 88)

    1.3.36 Reset counters for consumable parts (Function code 88) < Function > This function is performed to reset the counter for each consumable part in the main PCB after that has been replaced. < Operating Procedure > (1) For models with touch panel Press the [8] twice in the initial state of maintenance mode.

  • Page 410: Quit Maintenance Mode (Function Code 99)

    1.3.37 Quit maintenance mode (Function code 99) < Function > This function is used to quit the maintenance mode, restart the machine, and return it to the ready state. Also forcefully close the fuser unit error. < Operating Procedure > (1) For models with touch panel Press the [9] twice in the initial state of maintenance mode.

  • Page 411: Other Service Functions

    OTHER SERVICE FUNCTIONS Change ON/OFF setting of color registration < Function > Situation and timing of adjustment of color registration is decided by machine features of each models, and it will be performed by the decided timing. This function switches the registration starts automatically or not.

  • Page 412: Print Communication Error List

    Print Communication Error List < Function > This function is used to print the communication error list (Communication List). < Operating Procedure > For models with touch panel (1) Press and hold the for approximately five seconds while the machine is in the ready state. (2) Press the blank field at the bottom on the LCD.

  • Page 413: Chapter 6 Wiring Diagram

    CHAPTER 6 WIRING DIAGRAM WIRING DIAGRAM +3.3V +24V 5V tolerant CN32 ADF motor RMTB_ENABLE ENBn ADF_REARB_SEN RMTB_STEP STEP Duplex scan model only CN35 CIS_CLK_BS RMTB_USM0 USM0 +3.3V_SLPOFF Second side VOUT0 CISIN0 ADCK USM1 VDD_RS Document scanning position sensor PCB CIS unit SGND AFEMCLK RMTB_VREF...

  • Page 414: Chapter 7 Periodical Maintenance

    CHAPTER 7 PERIODICAL MAINTENANCE 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 Top cover or Back cover to access any parts inside the machine, never touch the shaded parts shown in the following figures.

  • Page 415: Periodical Replacement Parts

    PERIODICAL REPLACEMENT PARTS Preparation ■ 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, - the USB flash memory drive, if connected, and - the Line cord, if connected.

  • Page 416: Fuser Unit

    Fuser unit (1) Open the Back cover ASSY. (2) Remove the Back cover stopper arm L/R from the A part. A part Back cover stopper arm L Back cover ASSY A part Back cover stopper arm R <Back side> Fig. 7-2 (3) Release the Boss of the Back cover ASSY from the Bush on the Frame L to remove the Back cover ASSY.
  • Page 417 (4) Remove the Rear flapper sub ASSY from each Boss. Boss Rear flapper sub ASSY Boss <Back side> Fig. 7-4 (5) Remove the Taptite bind B M3x10 screw to remove the Fuser cover L. Taptite bind B M3x10 Fuser cover L <Back side>...
  • Page 418 Assembling Note: • When attaching the Fuser cover L, tighten the screw while pushing the Fuser cover L in the direction of the arrow. When the Fuser cover L is attached without pushing it, the Boss of the Frame L may come off. Fuser cover L Boss of the Frame L Fig.
  • Page 419 (7) Slide the Fuser cover ASSY in the direction of the arrow and remove it to the front. Fuser cover ASSY <Back side> Fig. 7-8 (8) Remove the Taptite bind B M3x10 screw to remove the Fuser cover R. Fuser cover R Taptite bind B M3x10 <Back side>...
  • Page 420 (9) Disconnect the Center thermistor harness and the Side thermistor harness from the Eject sensor PCB. Side thermistor harness Center thermistor harness Eject sensor PCB <Back side> Fig. 7-10 Confidential...
  • Page 421 (10) Remove the two Taptite pan (washer) B M4x12DA screws. Pull out the Fuser unit on the Frame L side in the direction of arrow 10a and then remove it in the direction of arrow 10b. (11) Disconnect the Heater harness of the Fuser unit from the LVPS heater harness. LVPS heater harness Heater harness Fuser unit...
  • Page 422 Note: • Do not apply a physical impact or vibration to the Fuser unit. Assembling Note: • After connecting the Heater harness of the Fuser unit to the LVPS heater harness, the Heater harness is housed so that it does not come out of the Frame R. LVPS heater harness Heater harness Frame R...

  • Page 423: Pf Kit 1

    PF kit 1 (1) Release each Hook of the T1 separation pad ASSY from the Paper tray. (2) Push both side Arms on the T1 separation pad ASSY inwards to remove the Pins, and remove the T1 separation pad ASSY from the Paper tray. (3) Remove the Separation pad spring from the Paper tray.
  • Page 424 (4) Push the Lift arm in the direction of arrow A, and rotate the Roller holder ASSY to release the Boss. Slide the Roller holder ASSY in the direction of arrow B to remove it from the Shaft, and remove the Roller holder ASSY from the machine. Boss Roller holder ASSY Lift arm...

  • Page 425: Pf Kit Mp

    PF kit MP (1) Open the Top cover and the MP cover ASSY. (2) Remove the two Taptite pan B M4x14 screws, and remove the MP maintenance cover from the Inner front cover. Taptite pan B M4x14 Top cover MP maintenance cover MP cover ASSY Inner front cover...
  • Page 426 (5) Remove each Hook, and turn the MP separation pad ASSY upright to remove it upward. (6) Remove the MP separation pad spring from each Pin. MP separation pad ASSY MP separation pad spring Hooks Pins Fig. 7-17 (7) After replacing the PF kit MP, reset the counter. (Refer to “1.3.36 Reset counters for consumable parts (Function code 88)”...
  • Page 427 APPENDIX 1 SERIAL NUMBERING SYSTEM  Serial number labels on the printer Serial number A 8 N 1 1 1 1 0 1 Model number Serial number (6-digit) Manufacturing factory No. Year of manufacture * : 201* (e.g., 8 : 2018) Month of manufacture A: January E: May...
  • Page 428 APPENDIX 2 DELETING USER SETTING INFORMATION The user setting information for the machine is stored in the main PCB. You can return this to the default settings by following the procedure below. <Operating Procedure> HL-L3290CDW/DCP-L3551CDW (For models without touch panel) (1) Press the [Menu].
  • Page 429 Maintenance USB Printer driver has been already installed to your computer according to this procedure, skip this section. • Before proceeding to the procedure given below, make sure that the Brother Maintenance USB Printer driver is stored in your computer.
  • Page 430 The following screen is displayed during installation. (4) Wait for the following screen to appear and click [Finish]. (5) Plug the AC cord of the machine into an electrical outlet. (6) Enter the maintenance mode. (Refer to “1.1 How to Enter Maintenance Mode” in Chapter (7) Connect the machine to your computer using a USB cable and the installation will be performed automatically.

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