Page 1 Brother Laser Printer SERVICE MANUAL MODEL HL-3160CDW/3190CDW/L3210CW HL-L3230CDN/L3230CDW/L3270CDW 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-PRN118 84E7* 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..............1-4 3. SERVICE INFORMATION................1-5 4. SUPPLIES ....................1-6 CHAPTER 2 ERROR INDICATION AND TROUBLESHOOTING 1. INTRODUCTION ..................2-1 1.1 Precautions......................... 2-1 1.2 Checks before Commencing Troubleshooting............2-3 2. OVERVIEW....................2-5 2.1 Cross-section Drawing ....................2-5 2.2 Paper Feeding ......................
Page 4 4.2.7 Unable to perform 2-sided printing ..............2-86 4.2.8 Paper jam ......................2-87 4.3 Troubleshooting for Image Defects................2-91 4.3.1 Image defect examples ................... 2-91 4.3.2 Troubleshooting image defect ................. 2-92 4.4 Troubleshooting for Software Problems ..............2-111 4.4.1 Unable to receive data..................2-111 4.5 Troubleshooting for Network Problems ..............
Page 5 5. LUBRICATION ...................3-6 6. OVERVIEW OF GEARS................3-7 7. HARNESS ROUTING.................3-8 8. DISASSEMBLY FLOW................3-17 9. DISASSEMBLY PROCEDURE ..............3-18 9.1 Preparation ....................... 3-18 9.2 Paper tray / T1 separation pad ASSY............... 3-19 9.3 Back cover........................ 3-20 9.4 Rear flapper sub ASSY .................... 3-22 9.5 Fuser cover ASSY / Fuser unit .................
Page 6 CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT 1. IF YOU REPLACE THE MAIN PCB............4-1 1.1 Configure for Country/Region and Model (Function code 74) ........4-2 1.2 Installing the Firmware (Sub Firmware and Main Firmware) ........4-2 1.2.1 Checking firmware version ................
Page 7 1.3.2 Transition to shipping state (Function code 03)..........5-5 1.3.3 Monochrome print quality test pattern (Function code 09) ........ 5-7 1.3.4 Set worker switches (WSW) and print worker switch setting data (Function code 10, 11) ........5-8 1.3.5 Check LCD operation (Function code 12) ............5-11 1.3.6 Check control panel key operation (Function code 13) ........
Page 8 CHAPTER 6 WIRING DIAGRAM 1. WIRING DIAGRAM ..................6-1 CHAPTER 7 PERIODICAL MAINTENANCE 1. PRECAUTIONS..................7-1 2. PERIODICAL REPLACEMENT PARTS ............7-2 2.1 Preparation ......................... 7-2 2.2 Fuser unit........................7-3 2.3 PF kit 1 ........................7-10 APPENDIX 1 SERIAL NUMBERING SYSTEM APPENDIX 2 DELETING USER SETTING INFORMATION APPENDIX 3 INSTALLING THE MAINTENANCE PRINTER DRIVER Confidential...
Page 9: 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 10  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 11 This product should be connected to an AC power source within the range indicated on the rating label. DO NOT connect it to a DC power source or inverter. Power Cord Safety: - This product is equipped with a grounded plug. This plug will only fit into a grounded power outlet.
Page 12 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. Confidential...
Page 13: 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. Model HL-3160CDW HL-L3210CW HL-L3230CDN HL-L3230CDW HL-L3270CDW HL-3190CDW Wired/Wireless Wired/ Wireless Wired Wired/Wireless Wireless Auto Duplex Print   Type...
Page 14 Model HL-3160CDW HL-L3210CW HL-L3230CDN HL-L3230CDW HL-L3270CDW HL-3190CDW First From Less than Less than 15.5/15.5 secs Less than Less than 14/14 secs Print Ready 14/14 secs (Mono/Color) 14/14 secs (Mono/Color) Time Mode (Mono/Color) at 73.4F (23°C) (Mono/Color) at 73.4F (23°C) at 73.4F at 73.4F...
Page 15 Model HL-3160CDW HL-L3210CW HL-L3230CDN HL-L3230CDW HL-L3270CDW HL-3190CDW Dimensions Carton 600 x 560 x 589 x 513 x 372 mm 589 x 532 x 600 x 560 x (W x D x H) Size 372 mm 23.2 x 20.2 x 14.6 inch...
Page 16: Network Connectivity
2. NETWORK CONNECTIVITY Model HL-3160CDW HL-L3210CW HL-L3230CDN HL-L3230CDW HL-L3270CDW HL-3190CDW Wired NC-9400h NC-9400h Network Wireless NC-8900w NC-8900w Network Specifications are subject to change without notice. Confidential...
Page 17: Service Information
3. SERVICE INFORMATION Model All models Machine Life 100,000 pages (A4 / LTR) or 5 years MTBF 4,000 hours MTTR 0.5 hours Maximum Monthly Print Up to 30,000 pages Volume Periodical Fuser Unit 50,000 pages (2 pages/job) Maintenance PF Kit 50,000 pages Parts Specifications are subject to change without notice.
Page 18: Supplies
4. SUPPLIES Model HL-3160CDW HL-L3210CW HL-L3230CDN HL-L3230CDW HL-L3270CDW HL-3190CDW Toner Starter BK: Approx. BK: Approx. 1,000 pages in accordance with ISO/IEC 19798 BK: Approx. Cartridge Toner 1,400 pages CMY: Approx. 1,000 pages in accordance with ISO/IEC 19798 1,400 pages in accordance...
Page 19 Model HL-3160CDW HL-L3210CW HL-L3230CDN HL-L3230CDW HL-L3270CDW HL-3190CDW Toner High BK: Approx. BK: Approx. BK: Approx. BK: Approx. BK: Approx. BK: Approx. Cartridge Capacity 3,000 3,000 3,000 3,000 3,000 3,000 Toner pages in pages in pages in pages in pages in...
Page 20: 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 21 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 22: 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 23 ■ 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 24: Overview
OVERVIEW Cross-section Drawing LED ASSY LED ASSY LED ASSY LED ASSY (Black) (Cyan) (Magenta) (Yellow) Exposure drum Exposure drum Exposure drum Exposure drum (Black) (Cyan) (Magenta) (Yellow) Belt unit <Back side> <Front side> Eject roller 3 Registration rear actuator Eject roller 2 Registration roller Heat roller Manual feed slot...
Page 25: Paper Feeding
Paper Feeding <Back side> <Front side> Manual feed paper feed path Eject to back side Paper feed path Duplex path Fig. 2-2 Confidential...
Page 26: 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 27 Part name Operation New toner sensor x4 When exchange to the new toner cartridge, detects the kinds of toner and add 1 to the reset of the developing bias (Inside of the high-voltage power supply PCB) and to the exchange count. Toner sensor x4 Detects the toner cartridge is set.
Page 28 ■ Location of sensors and clutches New toner sensors Registration mark sensor R 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 29: 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 Process motor...
Page 30: Main Components
Main Components Top cover ASSY Top cover ASSY LED control PCB LED control PCB Panel sub ASSY Panel PCB LED ASSY Back light guide NFC PCB Rubber key Belt unit Back cover Waste toner box Fuser cover ASSY Side cover R Rear flapper sub ASSY Paper eject ASSY...
Page 31: 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 32 Error Refer Error Refer Description Description Codes Codes Main PCB and LED control PCB 0D03 1E01 2-54 cannot access each other. Cannot read/write in the main PCB 0D04 1E02 2-54 and LED control PCB. An error occurred during the high- 0E00 2-52 1F00...
Page 33 Error Refer Error Refer Description Description Codes Codes 2601 3002 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 2-56...
Page 34 Error Refer Error Refer Description Description Codes Codes 4900 5003 4A00 5004 Dot counter of the toner cartridge 4B01 (black) or develop roller counter 2-59 5005 reaches the upper limit soon. Dot counter of the toner cartridge 4B02 (yellow) or develop roller counter 2-59 5006 reaches the upper limit soon.
Page 35 Error Refer Error Refer Description Description Codes Codes The electrodes of the high-voltage The top cover sensor detected that 6001 2-60 6300 power supply PCB detected that no 2-64 the top cover was open. waste toner box was set. The registration mark sensor detected 6002 6400 2-64...
Page 36 Error Refer Error Refer Description Description Codes Codes 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 sensor detected the 7001 7900 2-69 paper pass.
Page 37 Error Refer Error Refer Description Description Codes Codes 8703 8F01 8708 8F02 8709 8F03 870A 9001 The size of paper loaded in the T1 and the one specified from the driver 870B 9002 2-72 are not same when printing from the 870C 9003 870D...
Page 38 Error Refer Error Refer Description Description Codes Codes 9501 9C02 9502 9C03 9503 9C06 9504 9C07 9505 9D02 9601 9D03 9608 9D04 For 2-sided printing, paper size setting of 9701 the printer driver that was not supported 2-73 9D05 by 2-sided printing was selected. When printing from the T1, the size of 9702 paper specified from the driver set the...
Page 39 Error Refer Error Refer Description Description Codes Codes Timeout occurred with access request sent to server due to incorrect server An error occurred in the ROM check C001 2-80 E000 2-81 address, network disconnection, or sum. inactive server. User authentication is unavailable due E001 to incorrect user name, incorrect C002...
Page 40: 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 2-58...
Page 41 Error message Error Refer Description codes First line Second line Cartridge Open the Top Toner cartridge other than black 2100 2-54 is installed. Error Cover. Check color and position of Toner cartridge other than 2101 2-54 toner cartridges yellow is installed. Toner cartridge other than cyan 2102 2-54...
Page 42 Error message Error Refer Description codes First line Second line Drum ! Slide the Green tab Electric discharge that may be caused by dirt on the corona on Drum Unit. 6A00 2-66 wire of the drum unit was detected. Slide the Green tab Electrified terminal or GRID terminal signal detected that the on Drum Unit.
Page 43 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 2-66 Cyan (C)/ Magenta more than twice of the upper (M)/ Yellow (Y).
Page 44 Error message Error Refer Description codes First line Second line Jam Rear Open the Back After the registration rear sensor detects the end of paper pass Cover and remove and the specified period of time 7100 2-68 the jammed paper, has passed, the eject sensor then press Go.
Page 45 Error message Error Refer Description codes First line Second line No Drum Unit Open the Top GRID terminal signal detected that the black drum unit was not Cover, then install 6201 2-62 installed. the Drum Unit. Black(BK) Open the Top GRID terminal signal detected that the cyan drum unit was not Cover, then install...
Page 46 Error message Error Refer Description codes First line Second line No Tray T1 Reinstall Tray 1 The T1 paper feed sensor detected that the T1 is open when printing from the T1 8501 2-70 (before the registration of printing in the engine). The T1 paper feed sensor detected that the T1 is open when printing from the T1 (after...
Page 47 Error message Error Refer Description codes First line Second line Print Unable Turn the power off An error occurred in the internal temperature sensor. and then back on 0800 2-50 again. Print Unable Turn the power off Detected irregular power supply for more than 100 times.
Page 48 Error message Error Refer Description codes First line Second line Print Unable Turn the power off Could not communicate with the cartridge sensor on the machine 2E00 2-56 and then back on side. again. Cartridge sensor on the 2E02 2-56 machine side does not work.
Page 49 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 2-78 auto color registration performed from the control panel.
Page 50 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 2-60 Kit1 limit. Replace Open the Top Dot counter of the toner cartridge (black) or develop Toner Cover, replace 4C01...
Page 51 Error message Error Refer Description codes First line Second line Size Error Specify the correct When printing from the T1, the size of paper specified from the paper size for Tray 9702 2-73 driver set the size which was not supported by the T1.
Page 52 Error message Error Refer Description codes First line Second line Toner Low: Y Dot counter of the toner cartridge (yellow) or develop 4B02 2-59 roller counter reaches the upper limit soon. Wrong Toner Open the Top Cartridge sensor detected that the toner cartridge does not 2200 2-55...
Page 53: 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 counter of color toner has Insufficient Toner reached the upper limit during for Calibration. 9802 2-74 color density adjustment performed from the control panel.
Page 54 Error message Error Refer Description codes First line Second line Open the Top Cartridge Toner cartridge other than black 2100 2-54 Cover. Check color is installed. Error and position of Toner cartridge other than 2101 2-54 toner cartridges. yellow is installed. Toner cartridge other than cyan 2102 2-54...
Page 55 Error message Error Refer Description codes First line Second line Drum ! Open the Top Electric discharge that may be caused by dirt on the corona Cover. Pull out the wire of the drum unit was drum unit and 6A00 2-66 detected.
Page 56 Error message Error Refer Description codes First line Second line Jam 2-sided Pull the paper tray After the first side is printed in 2- sided printing, the registration completely. Check front sensor does not detect inside the machine. 7800 2-69 paper pass after a set period of Or open the Back time.
Page 57 Error message Error Refer Description codes First line Second line Log Access Authentication User authentication is unavailable due to incorrect Error error, contact your user name, incorrect password, administrator. C002 2-80 or asynchronous date and time between the machine and server.
Page 58 Error message Error Refer Description codes First line Second line No Cartridge Put the Toner Black toner cartridge could not communicate with the cartridge 2500 2-56 Cartridge back in. sensor. Yellow toner cartridge could not communicate with the cartridge 2501 2-56 sensor.
Page 59 Error message Error Refer Description codes First line Second line No Toner Open the Top The toner amount detection sensor detected that no toner Cover, then install 6101 2-61 cartridge (black) was set. Toner Cartridge. Black. Open the Top The toner amount detection sensor detected that no toner Cover, then install 6104...
Page 60 Error message Error Refer Description codes First line Second line Print Unable Turn the power off Cannot detect the synchronized signal of the paper feed motor. and then back on The speed of the paper feed 0201 2-48 again. motor does not stabilize within the specified time.
Page 61 Error message Error Refer Description codes First line Second line Print Unable Turn the power off The registration mark sensor R is dirty and cannot normally 1003 2-53 and then back on receive reflected light. again. The registration mark sensor L is dirty and cannot normally 1004 2-53...
Page 62 Error message Error Refer Description codes First line Second line Print Unable Turn the power off Write error in the EEPROM of the main PCB and then back on E600 2-81 again. Print Unable Turn the power off Detected an error in main PCB. E701 2-81 and then back on...
Page 63 Error message Error Refer Description codes First line Second line Replace Open the Top Dot counter of the toner cartridge (black) or develop Toner Cover. 4C01 2-59 roller counter has reached the Pull out the drum upper limit was detected. unit with toner to be replaced.
Page 64 Error message Error Refer Description codes First line Second line Size Error 2- Press Stop[x]. For 2-sided printing, paper size setting of the printer driver that sided Specify the correct was not supported by 2-sided paper and load the 9701 2-73 printing was selected.
Page 65 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 4300 2-58 limit soon. Drum End Soon: Number of the black drum unit rotations reaches the upper limit 4001 2-57 Black...
Page 66 Error message Error Refer Description codes First line Second line Toner Error One or more Toner The develop release sensor detected the develop roller Cartridges are not disengagement or engagement detected. Pull out 6E00 2-66 failure. and reinsert all 4 Toner Cartridges.
Page 67: 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 68 ■ 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 69 ■ 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 70 ■ Error code 0900 Detected irregular power supply for more than 100 times. Step Cause Remedy Low-voltage power supply PCB Replace the low-voltage power supply failure PCB. Refer to “1.3.28 Reset counters for consumable parts (Function code 88)” in Chapter 5 to reset the irregular power supply detection counter after the replacement.
Page 71 ■ 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 72 ■ 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 73 ■ 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 74 ■ Error code 2200 Cartridge sensor detected that the toner cartridge does not support black was installed. Error code 2201 Cartridge sensor detected that the toner cartridge does not support yellow was installed. Error code 2202 Cartridge sensor detected that the toner cartridge does not support cyan was installed. Error code 2203 Cartridge sensor detected that the toner cartridge does not support magenta was installed.
Page 75 ■ Error code 2500 Black toner cartridge could not communicate with the cartridge sensor. Error code 2501 Yellow toner cartridge could not communicate with the cartridge sensor. Error code 2502 Cyan toner cartridge could not communicate with the cartridge sensor. Error code 2503 Magenta toner cartridge could not communicate with the cartridge sensor.
Page 76 ■ Error code 3A00 A communication error occurred between the controller and engine in main PCB. Step Cause Remedy Main PCB failure Replace the main PCB. ■ 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.
Page 77 ■ Error code 4300 Number of pages printed with the belt unit will reach the upper limit soon. (90%) Error code 4400 Number of pages printed with the belt unit has reached the upper limit. (Printing does not stop.) <User Check> •...
Page 78 ■ 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 79 ■ 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 80 ■ Error code 6004 The eject sensor detected that the fuser cover was open. <User Check> • Close the fuser cover. Step Cause Remedy Eject actuator coming off or Reattach the eject actuator. caught in some sections of the machine Fuser cover attachment failure Reattach the fuser cover.
Page 81 ■ 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 82 ■ 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. 2-6 ■ Electrodes location of the drum unit Fig. 2-7 2-63 Confidential...
Page 83 ■ 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 84 ■ 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 85 ■ 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 86 ■ 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 87 ■ 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 88 ■ 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 89 ■ 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 90 ■ Error code 8A01 The registration rear sensor detected that the fed paper was larger or smaller 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 91 ■ 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 92 ■ 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 93 ■ Error code 9801 An error occurred with the value measured during color density adjustment 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 94 ■ Error code 9803 Density patch measurement ended unsuccessfully during color density adjustment performed from the control panel. Error code 9804 An error occurred with the value measured during density sensor sensitivity calibration. <User Check> • Check if the toner cartridges are set in the correct order of colors. •...
Page 95 ■ 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 96 ■ 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 97 ■ 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 98 ■ 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 99 ■ 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 Access to a file is unavailable due to incorrect directory name, no write permission on directory, file write lock, or no write permission on file.
Page 100 ■ Error code D800 An error occurred while initializing the touch panel. Step Cause Remedy Connection failure of the panel Reconnect the panel flat cable. flat cable Touch panel ASSY failure Replace the touch panel ASSY. Panel PCB failure Replace the panel PCB. Main PCB failure Replace the main PCB.
Page 101 ■ Error code F900 The spec code was not entered correctly. Step Cause Remedy The power was turned OFF while Reenter the spec code. (Refer to “1.3.22 function code 74 was running. Configure for country/region and model (Function code 74)” in Chapter Main PCB failure Replace the main PCB.
Page 102: 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 103: No Paper Feeding From Manual Feed Slot
4.2.2 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 104: Paper Becomes Wrinkled
4.2.4 Paper becomes wrinkled <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 each paper size. •...
Page 105: Unable To Perform 2-Sided Printing
4.2.7 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 106: Paper Jam
4.2.8 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 107 ■ 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 108 ■ Paper jam at the paper feeding section at the center of the machine <User Check> • Check that the paper is set in the T1 correctly. • Flip over the paper in the T1 or rotate the paper 180°. •...
Page 109 ■ Paper jam at the eject section <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 110: Troubleshooting For Image Defects
Troubleshooting for Image Defects 4.3.1 Image defect examples Light on the whole One color is light (2-93) Faulty registration (2-95) Dark (2-95) page (2-92) All one color (2-97) Poor fixing (2-96) Completely Image distortion blank (2-96) (2-97) Vertical streaks (2-99) Dirt on back side of paper (2-98) Vertical streaks in a dark background (2-100) White horizontal stripes on one color image...
Page 111: 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 112 ■ 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 113 ■ Electrodes location of belt unit Fig. 2-11 2-94 Confidential...
Page 114 ■ 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 115 ■ 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 116 ■ 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 117 ■ 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 118 ■ 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 119 ■ 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 120 ■ 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 121 ■ 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. 2-10 (P2-93).) • Replace the drum unit with a new one. •...
Page 122 ■ 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 123 ■ 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 124 ■ 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 125 (2) Turn the drum unit gear by hand so that the glued exposure drum surface comes to the front. Fig. 2-16 (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 126 ■ 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 127 ■ 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 128 ■ 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 129 ■ 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 130: Troubleshooting For Software Problems
(3) Select [USB] under the [Hardware] in [Contents] on the left side. (4) Select the machine [HL-XXXX] from [USB Device Tree]. (5) Check [Product ID] in [HL-XXXX]. ■ Product ID (Hexadecimal) HL-3190CDW : 00A5h HL-3160CDW : 00A7h HL-L3270CDW : 00A4h HL-L3230CDW : 00A6h HL-L3230CDN : 00A8h HL-L3210CW : 00A9h 2-111...
Page 131: 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 132: 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/harness*.
Page 133: 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 134: 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 135: 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 136: Troubleshooting For Pcb Problems
4.10 Troubleshooting for PCB Problems 4.10.1 Main PCB failure <User Check> • Turn the power switch OFF and then 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 137: Troubleshooting For Other Problems
4.11 Troubleshooting for Other Problems 4.11.1 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 138: 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 139: 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 140: Packing
PACKING Option carton upper Pad upper L Pad upper R Option carton front Pad lower Carton Confidential...
Page 141: Screw Catalogue
SCREW CATALOGUE Taptite bind B Screw cup Screw cup Taptite bind B M3x8 M4x12 Screw cup Taptite bind B M3x8 SR M3x10 Taptite bind S Taptite cup S Taptite bind S Taptite cup S M3x5 M3x6 SR Taptite cup S Taptite pan (washer) M3x8 SR Taptite pan (washer)
Page 142: 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 143 Tightening torque Location of screw Screw type Q’ty N·m (kgf·cm) Paper eject ASSY Taptite bind B M4x12 0.8±0.1 (8±1) (Side) 1.1±0.1 (11±1) (Top) DX drive cover Taptite bind B M4x12 0.8±0.1 (8±1) Duplex tray Taptite bind B M4x12 0.8±0.1 (8±1) Wire cover Taptite bind B M4x12 0.75±0.05 (7.5±0.5)
Page 144: 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 145: 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 146: Harness Routing
HARNESS ROUTING Top cover ASSY <Touch panel models> Panel flat cable NFC flat cable Panel relay PCB Panel relay flat cable Panel ground wire (BL) <Non-touch panel models> Panel harness (WH) Panel PCB LCD flat cable Harness colors are subject to change for some reason. Confidential...
Page 147 Main PCB, Cartridge sensor relay PCB Panel flat cable (For Touch panel models) Cartridge sensor LED control flat cable harness K Cartridge Cartridge sensor (RD, BK, WH, sensor harness relay flat cable Cartridge sensor harness Y C (RD, BK, (RD, BK, WH, PU) WH, PU) Cartridge sensor harness M (RD, BK, WH, PU)
Page 148 High-voltage power supply PCB, Fan harness, LED ground wire LED ground wire (BK) 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. 3-10 Confidential...
Page 149 LED unit LED ASSY flat cable Y LED ASSY flat cable K LED ASSY flat cable C LED control PCB LED control flat cable LED ASSY flat cable M 3-11 Confidential...
Page 150 High-voltage power supply flat cable High-voltage power supply flat cable 3-12 Confidential...
Page 151 Process drive unit Paper feed motor flat cable 3-13 Confidential...
Page 152 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 153 Front side of the machine HVPS harness (WH) T1 paper empty/paper feed sensor harness (WH) Manual feed paper empty/regist rear/ regist front sensor harness (WH) Harness colors are subject to change for some reason. 3-15 Confidential...
Page 154 LVPS <A view> <A view> LVPS heater harness (BK, YW, WH) <B view> Low-voltage power supply harness (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. 3-16 Confidential...
Page 155: Disassembly Flow
DISASSEMBLY FLOW Hook (H) / Screw (S) (pcs) 9.2 T1 separation 9.22 Roller holder 9.7 Side cover R 9.3 Back cover pad ASSY ASSY H: 2 / S: 0 H: 0 / S: 0 H: 10 / S: 2 H: 0 / S: 0 9.13 High-voltage 9.4 Rear flapper sub 9.6 Side cover L...
Page 156: Disassembly Procedure
DISASSEMBLY PROCEDURE Preparation  Disconnecting cables and removing accessories Prior to proceeding with the disassembly procedure, (1) Unplug - the AC cord, and - the LAN cable, if connected. (2) Remove - the Toner cartridge & Drum unit, - the Belt unit, - the Waste toner box, - the Paper tray, and - the LAN port cap.
Page 157: 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 158: 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 159 (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 160: 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 3-22 Confidential...
Page 161: 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 162 (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 163 (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 164 (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 165 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 166: Side Cover L
Side cover L (1) Open the Top cover and Manual feed slot. (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 167: 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 B while pushing them by using a flat-blade screwdriver or similar tool.
Page 168: Back Cover Lower
Back cover lower (1) Release each Hook to remove the Back cover lower. Hook Hooks Back cover lower <Back side> Fig. 3-17 3-30 Confidential...
Page 169: Top Cover Assy
Top cover ASSY (1) Remove the four Screw cup M3x8 (black) screws to remove the Main shield cover plate ASSY. (2) Disconnect the Panel flat cable (for Touch panel models) or the Panel harness (for Non- touch panel models) and the LED control flat cable from the Main PCB, and then release them from the securing fixtures.
Page 170 (3) 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. Hole of Side frame R LED ground wire Taptite pan (washer) B M4x12DA Fig.
Page 171 (5) Release each Boss to remove the Damper L ASSY from the Top cover ASSY. Bosses Top cover ASSY Damper L ASSY Fig. 3-21 (6) Release each Boss to remove the Damper R ASSY from the Top cover ASSY. Bosses Top cover ASSY Damper R ASSY Fig.
Page 172 (7) Release each Hook to remove the Arm R from the Top cover ASSY. Hooks Top cover ASSY Arm R Fig. 3-23 3-34 Confidential...
Page 173 (8) Open the Top cover ASSY at 90 degrees to remove it upward. (9) Remove the Paper stopper from the Top cover ASSY. Top cover ASSY Paper stopper 90° Fig. 3-24 3-35 Confidential...
Page 174 (10) Slide the Push arm in the direction of the arrow to raise the LED ASSYs. (11) Remove the two Taptite bind B M4x12 screws to remove the two TC lock arm guides from the Top cover ASSY. (12) Remove the Taptite bind B M4x12 screw. Release the Hook to remove the Damper hinge R from the Top cover ASSY.
Page 175 (13) Release the LED ground wire from the Hook of the Top cover ASSY. (14) Remove the seven Taptite bind B M4x12 screws. Release the Hook to remove the LED unit from the Top cover ASSY. Hook Top cover ASSY LED ground wire Taptite bind B M4x12 Taptite bind B M4x12...
Page 176: Lcd Panel Assy
9.10 LCD panel ASSY  For Touch panel models (1) Remove the Panel flat cable from the Double-sided tape to release it from the securing fixtures. Disconnect the Panel flat cable from the Panel relay PCB. Note: • Be sure to replace the Double-sided tape with a new one after removing the Panel flat cable from the Double-sided tape.
Page 177 Assembling Note: • Fold the Panel flat cable at the positions described below. <Non-touch panel model> <Touch panel model> Main PCB side Main PCB side 15±1 10±1 Reinforcing 47±1 Reinforcing 40±1 plate surface 65±1 plate surface 60±1 101±1 45° 99±1 45°...
Page 178 (5) Remove the two Taptite bind B M3x10 screws to remove the Panel FFC holder from the Panel sub ASSY. (6) Release the Hook to remove the NFC PCB from the Top cover ASSY. Taptite bind B M3x10 Panel FFC holder NFC PCB Top cover ASSY Hook...
Page 179 (7) Remove the two Taptite bind B M3x10 screws. Open the Panel sub ASSY in the direction of the arrow. Release each Boss to remove the Panel sub ASSY from the Top cover ASSY. Note: • As the Power light guide tends to come off, be careful not to lose it. Taptite bind B M3x10 Bosses Panel sub ASSY...
Page 180 (8) Release the Hook to remove the LCD panel ASSY from the Panel sub ASSY. LCD panel ASSY Panel sub ASSY Hook Fig. 3-31 (9) Remove the Taptite bind B M3x10 screw. Release each Hook to remove the Panel lower from the LCD panel upper.
Page 181 (11) Release the Lock to disconnect the Panel relay flat cable from the Panel PCB. (12) Release the Lock to disconnect the LCD flat cable from the Panel PCB. (13) Disconnect the Touch panel flat cable from the Panel PCB. Lock LCD flat cable Touch panel flat cable...
Page 182 (16) Release each Hook to remove the LCD from the Touch panel plate. (17) Release each Hook to remove the Touch panel plate from the LCD panel upper. (18) Remove the LCD film from the LCD panel upper. (19) Remove the Touch panel from the LCD panel upper. Hooks Hooks Touch panel plate...
Page 183  For Non-touch panel models (1) Release the Panel harness from the securing fixtures. (2) Remove the tape. Release each Hook to remove the Panel PCB from the Top cover ASSY. (3) Release the Lock to disconnect the LCD flat cable from the Panel PCB. (4) Release each Hook to remove the Back light guide from the Top cover ASSY.
Page 184: Led Control Flat Cable / Led Control Pcb
9.11 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 185 (2) Release the Lock to disconnect the LED control flat cable from the LED control PCB. Remove the LED control flat cable from the Double-sided tape to release it 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 186 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...
Page 187: Led Assy (Y/M/C/K) / Led Assy Flat Cable (Y/M/C/K)
9.12 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 188 (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. 3-41 Assembling Note: •...
Page 189 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 190: High-Voltage Power Supply Pcb / Develop Release Sensor Pcb
9.13 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 191 (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 192 (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 193: Fan
9.14 Fan (1) Release the Fan harness from the securing fixtures. Release each Hook to remove the Fan. <Right side> Fan harness Label Hooks Fig. 3-46 Harness routing: Refer to “3. High-voltage power supply PCB, Fan harness, LED ground wire”. Assembling Note: •...
Page 194: Wlan Pcb
9.15 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. 3-47 3-56 Confidential...
Page 195: Main Pcb
9.16 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 196 (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 197: Cartridge Sensor Relay Flat Cable
9.17 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 198: Develop Release Clutch / Process Drive Unit / High-Voltage Power Supply Flat Cable / Process Motor Flat Cable / Paper Feed Motor Flat Cable
9.18 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 199 (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 200 (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 201 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 202 (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 203 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. 3-56 3-65 Confidential...
Page 204 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 205 (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 206 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. 3-59 3-68 Confidential...
Page 207: T1 Pick-Up Clutch / Registration Clutch / Paper Feed Drive Unit
9.19 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 208 (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 209: Eject Sensor Pcb
9.20 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 210: Manual Feed Cover Assy
9.21 Manual feed cover ASSY (1) Release each Hook to remove the Inner front cover from the Bosses of the machine. Boss Hook Boss Inner front cover Hook Fig. 3-63 (2) Open the Manual feed cover ASSY. Release each Boss to remove the Manual feed cover ASSY from the Inner front cover.
Page 211: Roller Holder Assy
9.22 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 212: Paper Feed Unit
9.23 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. 3-66 3-74 Confidential...
Page 213 (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 214: Paper Eject Assy
9.24 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 of the Paper eject ASSY, and then remove the Paper eject ASSY.
Page 215: Duplex Tray
9.25 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 216: Low-Voltage Power Supply Pcb
9.26 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 an WARINING electric shock due to the electric charge accumulated in the capacitor.
Page 217 (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 218 (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. 3-72 Harness routing: Refer to “9. LVPS”. 3-80 Confidential...
Page 219 (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 220: Registration Mark Sensor L Pcb / Registration Mark Sensor R Pcb
9.27 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 221 (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 222: 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 223: 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 “1.3.22 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 224: Installing Firmware
(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: ******_$.djf) located in the same folder to the Brother Maintenance USB Printer icon located within the FILEDG32 screen.
Page 225: Continuous Adjustments Of Density And Registration Sensor (Function Code 73)
Continuous Adjustments of Density and Registration Sensor (Function code 73) Perform continuous adjustments of density and registration sensor in accordance with “1.3.21 Continuous adjustments of density / registration sensor (Function code 73)” in Chapter Setting the Serial Number (Function code 80) <Operating procedure>...
Page 226 (5) Open the temporary folder and double-click the “SvSettingTool.exe”. The screen shown on the right appears. (6) Check that the USB port connected with the machine is displayed in the box (A). (7) Enter the model name in the box (B) and press the [Find a model].
Page 227 (15) Click the [display data] shown as (M). The machine maintenance information appears. (16) In the maintenance information, check that the serial number in the [Serial] field is same as the value entered in the procedure (10). (17) Click the [Cancel] shown as (N) and close the Get Information screen.
Page 228: 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 “1.3.21...
Page 229: 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 230: If You Replace The Top Cover Assy, Lcd, Lcd Panel Assy Or Panel Pcb
IF YOU REPLACE THE TOP COVER ASSY, LCD, LCD PANEL ASSY 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 231: 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 232: 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 233: 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 234: 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 235: 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) Monochrome print quality test pattern 1.3.3 (5-7) Set worker switches (WSW) 1.3.4 (5-8) Print worker switch (WSW) setting data 1.3.4 (5-10) Check LCD operation 1.3.5 (5-11)
Page 236: 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 237 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 238 ■ 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 239 1.3.3 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 240 1.3.4 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 241 < Operating Procedure > For models with touch panel (1) Press the [1], and then the [0] in the initial state of maintenance mode. “WSW00” is displayed on the LCD. (2) Enter the worker switch number that you want to change the setting. The following display appears on the LCD.
Page 242 [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 243 1.3.5 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 244 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]. A screen as shown in the figure below appears on the LCD. (2) Each press of the [Go] cycles through the displays as shown in the figure below.
Page 245 1.3.6 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 246 1.3.7 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. “MAIN: Ver*.**” is displayed on the LCD.
Page 247 1.3.8 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 248 ■ 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 Develop release sensor Internal temperature sensor T1 paper feed sensor External temperature/ humidity sensor Fig.
Page 249 1.3.9 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 250 1.3.10 Change USB No. return value / Switching dither pattern / 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 251 ■ 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 252 ■ 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 253 ■ 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 254 ■ 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 255 ■ 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 256 ■ Change of function switch < Function > This function is used to stop the soft switch function, so it is the function that is not used for the service but for the designers. ■ Change of drum developing bias correction value in endurance deterioration of drum <...
Page 257 1.3.11 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 258 ■ Print adjustment test pattern Fig. 5-7 5-26 Confidential...
Page 259 1.3.12 Check consumables function (Function code 57) (Models with cartridge sensor only) < Function > This function is used to acquire the toner cartridge data and check whether the country code is right and it is compatible with the machine and capacity. Also checks the toner cartridge version and the continuity (contact).
Page 260 ■ Destination check (1) For models with touch panel Press the [5], and then the [7] in the initial state of maintenance mode. “IC_ACT ALL” is displayed on the LCD. For models without touch panel Press the [▲] or [▼] in the initial state of maintenance mode to display “MAINTENANCE 57” on the LCD, and press the [OK].
Page 261 ■ Continuity (contact) check (1) For models with touch panel Press the [5], and then the [7] in the initial state of maintenance mode. “IC_ACT ALL” is displayed on the LCD. For models without touch panel Press the [▲] or [▼] in the initial state of maintenance mode to display “MAINTENANCE 57” on the LCD, and press the [OK].
Page 262 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 263 1.3.14 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 264 ■ Error message list Error message Remedy FAILED REGIST Press the [Mono Start] or [Go] to clear the error. Perform the Adjustment of inter-color position alignment (auto) again. If the error recurs, clean the belt unit and the drum unit and then perform the adjustment again.
Page 265 ■ 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 266 ■ 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 267 1.3.15 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 268 <Print pattern> Description SELECT: K 100% Black 100% solid print SELECT: C 100% Cyan 100% solid print SELECT: M 100% Magenta 100% solid print SELECT: Y 100% Yellow 100% solid print SELECT: W 100% White 100% solid print SELECT: R 100% Red 100% solid print SELECT: G 100% Green 100% solid print...
Page 269 <Print type> Description SELECT: TRAY1 SX 1-sided printing from T1 SELECT: MP SX 1-sided printing from MP tray (Display only for MP models) SELECT: MF SX 1-sided printing from manual feed slot (Display only for manual feed slot models) SELECT: TRAY1 DX 2-sided printing from T1 SELECT: MP DX 2-sided printing from MP tray (Display only for MP models)
Page 270 ■ 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 271 1.3.16 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 272 1.3.17 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 273 1.3.18 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 274 1.3.19 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 275 <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 276 <Print page> Description SELECT: 1PAGE 1-page printing SELECT: CONTINUE Continuous printing * * Press the [Cancel] or [Stop] to end the continuous printing. <Error display> Error display Remedy Replace Toner Replace the toner cartridge and press the [Mono Start] or [Go] to release the error.
Page 277 1.3.20 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 278 1.3.21 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 279 (4) Press the [Go] to save the new setting, and “PARAMETER INIT” is displayed on the LCD. The machine then returns to the initial state of maintenance mode. ■ Setting by spec code list MODEL Country Code Country Code (Detail) HL-3160CDW China 0320 HL-3190CDW China 0020 HL-L3210CW...
Page 280 • If there is no entry for one minute or longer, the machine returns to the initial state of maintenance mode automatically, regardless of the display status. • The spec code list above is current as of March 2018. • Please contact Brother distributors for the latest information. 5-48 Confidential...
Page 281 1.3.23 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 282 Model name 25 Accumulated average coverage by each toner cartridge Serial number 26 Average coverage by current each toner cartridge Model code 27 Average coverage by the previous each toner cartridge Spec code 28 Latest job average coverage by each toner cartridge Switch check sum (factory use) and 29 Drum page count / Rotations of the drum...
Page 283 1.3.24 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 284 1.3.25 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 285 Description DX_CO:00000000 Total number of two-sided color pages printed DX_MO:00000000 Total number of two-sided monochrome pages printed TTLPCPT:00000000 Total number of pages printed via PC DX_PCPT:00000000 Total number of two-sided pages printed via PC CL_PCPT:00000000 Total number of color pages printed via PC MN_PCPT:00000000 Total number of monochrome pages printed via PC DX_CPCP:00000000...
Page 286 Description GLOSSY:00000000 Printed pages on glossy paper TTL_JAM:00000000 Total paper jams that have occurred MP_JAM:00000 Paper jams that have occurred in MP tray (Display only for MP models) MN_JAM:00000000 Paper jams that have occurred in manual feed (Display only for manual feed slot models) TR1_JAM:00000000 Paper jams that have occurred in T1 IN_JAM:00000000...
Page 287 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 288 1.3.26 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 289 1.3.27 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 “1.3.20 Sensitivity adjustment of density sensor (Function code 72)”...
Page 290 1.3.28 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 291 CHAPTER 6 WIRING DIAGRAM WIRING DIAGRAM +1.5V SCL0 DDR_MMZQ +1.5V SDA0 DDR_DDR3VOUT Touch panel model only +3.3V VREF +1.5V SCL0 NFC model only EEPROM DDR3-SDRAM SDA0 (Max 4Gb) A[2:0]=111 DDR_MMVREF NFC PCB DDR_MMCK NFC_WAKE SPI_DATA[3:0] SPI_CS0 DDR_MMXCK DDR_MMCKE0 SGND SPI_CS1 Module DDR_MMCKE1 SPI_CS2...
Page 292 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 293 PERIODICAL REPLACEMENT PARTS Preparation ■ Disconnecting cables and removing accessories Prior to proceeding with the disassembly procedure, (1) Unplug - the AC cord, and - the LAN cable, if connected. (2) Remove - the Toner cartridge & Drum unit, - the Belt unit, - the Waste toner box, - the Paper tray, and - the LAN port cap.
Page 294 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 295 (4) Remove the Rear flapper sub ASSY from each Boss. Boss Rear flapper sub ASSY Boss <Back side> Fig. 7-4 Confidential...
Page 296 (5) Remove the Taptite bind B M3x10 screw to remove the Fuser cover L. Taptite bind B M3x10 Fuser cover L <Back side> Fig. 7-5 Assembling Note: • When attaching the Fuser cover L, tighten the screw while pushing the Fuser cover L in the direction of the arrow.
Page 297 (6) 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. 7-7 (7) Slide the Fuser cover ASSY in the direction of the arrow and remove it to the front. Fuser cover ASSY <Back side>...
Page 298 (8) Remove the Taptite bind B M3x10 screw to remove the Fuser cover R. Fuser cover R Taptite bind B M3x10 <Back side> Fig. 7-9 (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...
Page 299 (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 300 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 301 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 302 (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 303 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 304 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-L3210CW/HL-L3230CDN/HL-L3230CDW (For models without touch panel) (1) Press the [▲] or [▼] to select the “Initial Setup”...
Page 305 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 306 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.

This manual is also suitable for:

Hl-3190cdw Hl-l3210cw Hl-l3230cdn Hl-l3230cdw Hl-l3270cdw

Brother HL-3160CDW Service Manual

Chapter 1 Supplemental Specifications

Chapter 2 Error Indication and Troubleshooting

Chapter 3 Disassembly/Reassembly

Chapter 4 Adjustments and Updating of Settings, Required after Parts Replacement

Chapter 5 Service Functions

Quick Links

Troubleshooting

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Summary of Contents for Brother HL-3160CDW

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Table of Contents