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Brother DCP-8080DN/8085DN, MFC-8480DN/8880DN/8890DW CHAPTER 4 PERIODIC MAINTENANCE

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CHAPTER 4 PERIODIC MAINTENANCE

CONTENTS

1. PERIODIC MAINTENANCE PARTS.............................................................................

4-1

1.1

Periodical Replacement Parts ...............................................................................

4-2

1.2

Procedures to Replace Periodical Replacement Parts..........................................

4-3

 

1.2.1 Fuser unit and laser unit.............................................................................

4-3

 

1.2.2 Paper feeding kit for tray 1, 2 ...................................................................

4-30

 

1.2.3 Paper feeding kit for MP tray....................................................................

4-36

Confidential

Contents
Laser FAX/MFC DCP-8080DN/8085DN MFC-8480DN/8880DN/8890DW Page PREFACE APPENDIX 1: FIRMWARE SWITCHES (WSW) APPENDIX 2: DELETION OF USER SETTING INFORMATION, etc APPENDIX 3: SERIAL NUMBERING SYSTEM APPENDIX 4: SCREW CATALOGUE APPENDIX 5: REFERENCES REGULATION Page Page Page SAFETY INFORMATION Page Page SPECIFICATIONS CHAPTER SPECIFICATIONS 1. COMPONENTS 2. SPECIFICATIONS LIST Functions Page 2.3Electronics and Mechanics 2.4Network Connectivity Page 2.5Service Information Paper Paper handling 2.6.2 Media specifications 2.6.3 Type and size of paper Page 2.7Printable Area Page Page Page Page Page 2.8Print Speeds with Various Settings 2.9 Telephone 2.10 Fax 2.11 List/Report 2.12 Copy 2.13 Scanner 2.14 USB Host THEORY OF OPERATION CHAPTER 2 THEORY OF OPERATION 1. MECHANICS 2. ELECTRONICS 3. MECHANICS Page 3.2Scanner Mechanism 3.2.1 Scanner unit Page 3.2.2 ADF unit Page Page Page Page 3.3Paper Feeding 3.3.1 Plate-upFunction of the Paper Tray 3.3.2 Paper supply 3.3.3 Paper registration 3.3.4 Paper eject 3.3.5 Duplex printing 3.3.6 Paper feeding from the MP tray 3.3.7 Paper feeding from the LT tray (Tray2) 3.4Toner Cartridge 3.4.1 Methods for Detecting Toner Life 3.4.2 Cartridge life 3.4.3New toner detection Page Page 3.5Print 3.5.1 Basic Principle 3.5.2 Print Process Page Page Page Page 3.6Sensors position Page ERROR INDICATION AND TROUBLESHOOTING CHAPTER 3 PERIODIC MAINTENANCE 1. INTRODUCTION 1.2Part names 1.3Initial Check Page 2. DISTINGUISH ERROR CAUSE Page Page Page 3. ERROR CODES Page Page 3.2Error Code Cause and Remedy Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page 4. PAPER FEEDING PROBLEMS 4.3Paper Jam Page 4.4Dirt on Paper 4.5Wrinkles or creases 4.6Waves in the paper / folds in the paper at the eject roller 4.7Curl in the paper 4.8Prints only single side of the paper when duplex-printing 5. IMAGE DEFECT TROUBLESHOOTING 5.3Troubleshooting Image Defect Page ■Poor fixing Page Page Page Page Page Page Page Page Page Page Page 6. SOFTWARE SETTING PROBLEMS 7. NETWORK PROBLEMS 8.TROUBLESHOOTING OF THE COMMUNICATIONS ERRORS Page Page Page Page 9.TROUBLESHOOTING OF THE CONTROL PANEL Page 10. TROUBLESHOOTING OF FAX FUNCTIONS Page Page Page 11. DOCUMENT FEEDING PROBLEMS 11.2 Double Feeding 11.3Paper Jam Page 11.4 Wrinkles 12.SCANNING IMAGE DEFECT TROUBLESHOOTING Page Page 13. OTHERS PROBLEMS Page PERIODIC MAINTENANCE CHAPTER 4 PERIODIC MAINTENANCE 1. PERIODIC MAINTENANCE PARTS 1.1Periodical Replacement Parts 1.2Procedures to Replace Periodical Replacement Parts Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page CAUTION Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page DISASSEMBLY/REASSEMBLY CHAPTER 5 PERIODIC MAINTENANCE Page Page Page 1. SAFETY PRECAUTIONS 2. TRANSFERRING RECEIVED FAX DATA Page 3. PACKING 4. SCREW TORQUE LIST Page Page 5. LUBRICATION Page 6. GEAR LAYOUT DRAWING 7. HARNESS ROUTING Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page DISASSEMBLY FLOW CHART 9. DISASSEMBLY PROCEDURE 9.1Paper Tray Page Page 9.2Back Cover Page 9.3Rear Chute ASSY Page 9.4Fuser Unit Page Page Page 9.5Tray MP ASSY 9.6MP Tray Cover ASSY/Process Cover ASSY/Emblem cover Page Page 9.7Access Cover/Side Cover L 9.8ADF Unit 9.9Hinge Arm R 9.10Hinge Base R 9.11Hinge ASSY L 9.12ADF Cover ASSY 9.13ADF Side Cover F 9.14ADF Side Cover R 9.15ADF Chute ASSY Page 9.17Exit Chute Cover ASSY 9.18Earth Spring 9.19PF Roller Holder ASSY 9.20LF Roller 1 ASSY 9.21SB Roller ASSY (For the models with the Reading DX only) Page 9.22ADF Motor 9.23S/B Solenoid ASSY (For the models with the DX only) 9.24PF Solenoid ASSY (For the models with the DX only) 9.25ADF Relay PCB 9.26Paper Feed Chute ASSY 9.27Actuator Front 1/Photo Interrupter (For the models with the DX only) 9.28Actuator Front 2/Photo Interrupter (For the models with the DX only) Page 9.30Presser Roller/LF Spring 9.31LF Roller 2 ASSY 9.32Exit Roller ASSY 9.33LF Roller 3 ASSY 9.34LF Roller 4 ASSY Page 9.36Document Hold/Document Hold Spring 9.37Upper Main Chute ASSY/Lower Main Chute ASSY Page 9.38Actuator R/Photo Interrupter 9.39Flap B 9.40Actuator SB/Photo Interrupter (For the models with the DX only) 9.41Document Ejection Tray 9.42Document Cover Sensor 9.43Eject Roller B4 9.44Presser Roller 9.45Panel Cover ASSY 9.46Scanner Unit ASSY 9.47 Top Cover ASSY 9.48Lock Lever B/ Lock Lever ASSY 9.49CCD Module Page 9.50FFC Cable ASSY 9.51Scanner Motor FB 9.52Pulley ASSY 9.53Photo Interrupter 9.54Panel Unit 9.55Panel PCB ASSY Page 9.56Printed Rubber Key 9.57LCD Cover/Backlight Module/LCD 9.58NCU PCB ASSY (For the models with the NCU only) Page 9.59Speaker ASSY 9.60Driver PCB 9.61USB HOST PCB ASSY Page 9.62Side Cover R 9.63Joint Cover ASSY DANGER GEFAHR WARNUNG Page 9.64Main PCB Page 9.65Gear Plate Calking ASSY/Develop Joint/Main Motor ASSY Page 9.66Main Shield Plate ASSY Page Page 9.67Relay Rear PCB ASSY/Connector Page 9.68Relay Front PCB ASSY 9.69Drive Release Link 9.70MP Solenoid ASSY 9.71T1 Solenoid ASSY 9.72Toner Sensor PCB 9.73Register Solenoid ASSY 9.74Ejector Solenoid ASSY 9.75Interlock SW ASSY 9.76New Toner Actuator 9.77Gear 17/20/23 Page 9.78Thermistor ASSY 9.79Filter 9.80Laser Unit 9.81PS PCB Unit Page Page Page 9.82High-VoltagePS PCB ASSY Page 9.83Wireless PCB (PCB T60H989 ASSY 04) (Wireless LAN model) 9.84Toner LED PCB Unit ASSY 9.85Fan Motor 60 Unit 9.86Fan Motor 60 Unit LV 9.87FRAME L ASSY Page Page 9.88MP Unit Page Page Page Page Page 9.89Regist Actuator Rear/Regist Actuator Spring Page 9.90Regist Actuator Front/Regist Actuator Spring 9.91Roller Holder ASSY 9.92PE Actuator/Edge Actuator/Edge Actuator Spring Page 9.93PE EG Sensor ASSY Page 10. DISASSEMBLY PROCEDURE (LT-5300) Page Page 10.2LT Front Cover ASSY 10.3LT Rear Cover 10.4LT Side Cover L 10.5LT Side Cover R 10.6LT PCB ASSY 10.7Connector: 10.8Connector: 10.9Gear 24 LT 10.10Collar Page Page Page 10.11LT Solenoid ASSY 10.12Roller Holder ASSY 10.13Edge Actuator Spring 10.14PE Actuator , Edge Actuator 10.15LT Sensor PCB ASSY Page Page CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT 1. IF YOU REPLACE THE MAIN PCB Page Page Page Page Page Page Page Page Page Page 2. IF YOU REPLACE THE WIRELESS LAN PCB 3. IF YOU REPLACE THE WIRELESS LAN PCB SERVICE MODE CHAPTER 7 SERVICE MODE Page 1. ENTRY INTO THE MAINTENANCE MODE 2. LIST OF MAINTENANCE-MODEFUNCTIONS 3. USER-ACCESSTO THE MAINTENANCE MODE 4.DETAILED DESCRIPTION OF MAINTENANCE-MODEFUNCTIONS 4.2Printout of Scanning Compensation Data (Function code 05) Page Page 4.3Placement of FB Unit in Position for Transportation (Function code 06) 4.4ADF Performance Test (Function code 08) 4.5Test Pattern 1 (Function code 09) 4.6Firmware Switch Setting and Printout 4.6.1Firmware switch setting (Function code 10) Page Page 4.6.2Printout of firmware switch data (Function code 11) 4.7Operation Check of LCD (Function code 12) 4.8Operational Check of Control Panel PCB (Function code 13) 4.9ROM Version Check (Function code 25) 4.10 Sensor Operational Check (Function code 32) Page 4.11 PC Print Function (Function code 43) Page Page 4.12 Switching the USB Setting (Function code 45) 4.13 Pan-nordicSelect Country (Function code 52) Page Page 4.15 Fine Adjustment of Scan Start/End Positions (Function code 54) Page Page 4.17 Paper Feeding and Ejecting Test (Function code 67) 4.18EEPROM Customizing (Function code 74) Page 4.19 Operational Check of Fans (Function code 78) 4.20 Display of the Machine’s Log Information (Function code 80) Page 4.21 Error Code Indication (Function code 82) 4.22Output of Transmission Log to the Telephone Line (Function code 87) 4.24Maintenance Mode Finish (Function code 99) 5. OTHER SERVICE FUNCTIONS Page 5.2Develop Roller / Developing Bias Voltage Counter Reset Function 5.3Drum condensation countermeasure mode 5.4Unlocking and Clearing the Password of the Function Lock / Setting Lock 5.5Clearing the Data of the Secure Print CIRCUIT DIAGRAMS, WIRING DIAGRAM CHAPTER 8 CIRCUIT DIAGRAMS, WIRING DIAGRAM 1. CIRCUIT DIAGRAMS Page Page Page 2. WIRING DIAGRAM FIRMWARE SWITCHES (WSW) Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page Page DELETION OF USER SETTING INFORMATION, etc Page SERIAL NUMBERING SYSTEM Page SCREW CATALOGUE Taptite bind B Taptite cup B Taptite pan (washer) Screw pan (S/P washer) Taptite B REFERENCES Page GLOSSARY