Acfb_ccd_e_cov MFC9840service
User Manual: MFC9840service
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- DCP-9045CDN/MFC-9840CDW SERVICE MANUAL
- PREFACE
- TABLE OF CONTENTS
- REGULATION
- SAFETY INFORMATION
- CHAPTER 1 TROUBLESHOOTING
- CHAPTER 2 PERIODICAL MAINTENANCE
- CHAPTER 3 DISASSEMBLY AND ASSEMBLY
- 1. SAFETY PRECAUTIONS
- 2. PACKING
- 3. SCREW TORQUE LIST
- 4. LUBRICATION
- 5. OVERVIEW OF GEARS
- 6. HARNESS ROUTING
- 7. DISASSEMBLY FLOW
- 8. DISASSEMBLY PROCEDURE
- 8.1 Paper Tray
- 8.2 DX Feed ASSY
- 8.3 MP Cover ASSY/ MP Paper Guide ASSY
- 8.4 MP Lift Arm 2/ MP Roller Holder ASSY
- 8.5 Fuser Unit/ Toner Filter Frame ASSY
- 8.6 Back Cover Upper
- 8.7 Paper Eject ASSY DX
- 8.8 Back Cover ASSY
- 8.9 Paper Guide/ HV TR Top Cover
- 8.10 Transfer HVPS PCB Unit
- 8.11 Registration-mark Sensor PCB ASSY 1, 2/ Density Sensor/ Registration Relay PCB ASSY/ Transfer HVPS PCB ASSY
- 8.12 Side Cover L ASSY
- 8.13 Side Plate LB
- 8.14 Drum Unit Fan (OPC)
- 8.15 Side Cover R ASSY
- 8.16 Paper stopper
- 8.17 Driver PCB ASSY
- 8.18 Pull arm L, R/ Hinge Protection Cover ASSY
- 8.19 ADF Unit
- 8.20 Panel Unit
- 8.21 Document Scanner Unit
- 8.22 NCU PCB ASSY (MFC-9840CDW only)
- 8.23 Battery ASSY
- 8.24 Joint Cover ASSY
- 8.25 Speaker ASSY
- 8.26 Roller Holder ASSY
- 8.27 Paper Feed Frame Unit/ T1 PE/Edge Sensor PCB ASSY
- 8.28 Belt Cleaner Release Sensor PCB ASSY
- 8.29 THM/HUM Sensor Holder ASSY
- 8.30 Release Rack
- 8.31 Front Door Unit ASSY
- 8.32 Harness Cover MP
- 8.33 Front Door Sub
- 8.34 EL Electrode Spring L/R
- 8.35 Hook Cover/ Front Cover Release Button/ Button Spring/ Front Door Main
- 8.36 Hook Shaft/ Hook/ Hook Spring
- 8.37 Engine PCB ASSY
- 8.38 Main PCB ASSY/ Ground Plate/ Ground Spring Plate
- 8.39 Waste Toner Near/Full Sensor ASSY
- 8.40 Laser Unit/ Hook Slope
- 8.41 Develop Drive Motor ASSY
- 8.42 Drum Drive ASSY/ Drum Phase Sensor PCB ASSY 1, 2
- 8.43 Drive Frame Unit ASSY
- 8.44 Paper Feed/Belt Cleaner Motor ASSY
- 8.45 Develop Release Sensor PCB ASSY
- 8.46 Develop Press Drive L ASSY
- 8.47 Front Cover Interlock Switch ASSY
- 8.48 Toner Sensor PCB ASSY K, Y, M, C (TE/NEW)
- 8.49 New Toner Actuator/ New Toner Actuator Spring
- 8.50 Side Plate R ASSY
- 8.51 Drum Lock Lever L
- 8.52 Drum Lock Lever R
- 8.53 Charge HVPS PCB ASSY
- 8.54 Toner LED PCB ASSY
- 8.55 Fuser Unit Fan (FU)
- 8.56 LVPS Fan (PS)
- 8.57 Air Intake Fan (AIR)
- 8.58 PS PCB Unit
- 8.59 Belt Unit Drive Motor ASSY
- 9. DISASSEMBLY PROCEDURE (LT-100CL)
- CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT Main PCB
- CHAPTER 5 SERVICE FUNCTIONS
- 1. MAINTENANCE MODE
- 1.1 How to Enter the Maintenance Mode
- 1.2 How to Enter the End User-accessible Maintenance Mode
- 1.3 List of Maintenance-mode Functions
- 1.4 Detailed Description of Maintenance-mode Functions
- 1.4.1 EEPROM Parameter Initialization (Function code 01, 91)
- 1.4.2 Printout of Scanning Compensation Data (Function code 05)
- 1.4.3 Placement of Scanner Unit in Position for Transportation (Function code 06)
- 1.4.4 ADF Performance Test (Function code 08)
- 1.4.5 Test Pattern (Function code 09)
- 1.4.6 Worker Switch (WSW) Setting and Printout
- 1.4.7 Operational Check of LCD (Function code 12)
- 1.4.8 Operational Check of Control Panel Button (Function code 13)
- 1.4.9 ROM Version Check (Function code 25)
- 1.4.10 Drum Unit Cleaning (Function code 31)
- 1.4.11 Operational Check of Sensors (Function code 32)
- 1.4.12 Switching of the USB Transfer Speed in the PictBridge Mode (Function code 45)
- 1.4.13 EEPROM Customizing (User-accessible) (Function code 52)
- 1.4.14 Received Data Transfer Function (Function code 53) (MFC-9840CDW only)
- 1.4.15 Fine Adjustment of Scan Start/End Positions (Function code 54)
- 1.4.16 Acquisition of White Level Data and CCD Scanner Area Setting (Function code 55)
- 1.4.17 Adjustment of Color Registration (Maintenance Mode 66)
- 1.4.18 Paper Feeding and Ejecting Test (Function code 67)
- 1.4.19 Sensitivity Adjustment of Density Sensor (Function code 72) (Don’t use)
- 1.4.20 EEPROM Customizing (Function code 74)
- 1.4.21 Sensitivity Adjustment of Registration-mark Sensor (Function code 75)
- 1.4.22 Operational Check of Fans (Function code 78)
- 1.4.23 Display of the Machine’s Log Information (Function code 80)
- 1.4.24 Error Code Indication (Function code 82)
- 1.4.25 Developing Bias Voltage Correction (Function code 83)
- 1.4.26 Output of Transmission Log to the Telephone Line (Function code 87)
- 1.4.27 Exit from the Maintenance Mode (Function code 99)
- 2. OTHER SERVICE FUNCTIONS
- 2.1 Resetting the Periodical Replacement Parts Life
- 2.1.1 Resetting the Life Counter of the Belt Unit
- 2.1.2 Resetting the Life Counter of the Fuser Unit
- 2.1.3 Resetting the Life Counter of the Drum Unit
- 2.1.4 Resetting the Life counter of the Paper Feeding Kit
- 2.1.5 Resetting the Life Counter of the MP Paper Feeding Kit
- 2.1.6 Resetting the Life Counter of the Laser Unit
- 2.2 Develop Roller/ Developing Bias Voltage Counter Reset Function
- 2.3 Drum Unit Cleaning Mode
- 2.4 Fixing Motor Speed Adjustment Mode
- 1. MAINTENANCE MODE
- CHAPTER 6 CIRCUIT DIAGRAMS, WIRING DIAGRAM
- APPENDIX 1 WORKER SWITCH SETTINGS (WSW)
- APPENDIX 2 DELETION OF PERSONAL INFORMATION
- APPENDIX 3 SERIAL NUMBERING SYSTEM
- APPENDIX 4 SCREW CATALOGUE
- APPENDIX 5 HOW TO MAKE THE DRUM UNIT REMOVE SHEET
- APPENDIX 6 REFERENCES