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PREFACE
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
TABLE OF CONTENTS
CHAPTER 1 TROUBLESHOOTING
CHAPTER 2 PERIODICAL MAINTENANCE
CHAPTER 3 DISASSEMBLY AND ASSEMBLY
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CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTING
REQUIRED AFTER PARTS REPLACEMENT
CHAPTER 5 SERVICE FUNCTIONS
APPENDIX 1 WORKER SWITCH SETTINGS (WSW)
App.1-1
APPENDIX 2 DELETION OF PERSONAL INFORMATION
App.2-1
APPENDIX
REGULATION
Internal laser radiation
EU Directive 2002/96/EC and EN50419
< For USA and Canada
Federal Communications Commission (FCC) Declaration of Conformity
(For USA)
Industry Canada Compliance Statement (For Canada)
Laser Safety (110 to 120 volt model only)
FDA Regulations (110 to 120 volt model only)
SAFETY INFORMATION
Definitions of Warnings, Cautions, Notes and Memos
Safety Precautions
WARNING
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About Copying
CAUTION
CHAPTER 1 TROUBLESHOOTING
1.INTRODUCTION
<Paper
<Consumable Parts
<Others
2.ERROR CODES
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2.2Error Cause and Remedy
2.2.1Recoverable Error by User Check
Error code
Error code 5E
Error code 9B
Error code C7
Error code C9
2.2.2Service Call Error
Error code 20(K)
Error code 21(Y)
Error code 22(M)
Error code 23(C)
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Error code 2A
Error code 2B
Error code 2C(K)
Error code 2D(Y)
Error code 2E(M)
Error code 2F(C)
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Error code 3B
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Error code 5A
Error code 5F
Error code 60(C), 61(M), 62(Y), 63(K)
Error code 64(C), 65(M), 66(Y), 67(K)
Error code 6A
Error code 6B
Error code 6C
Error code 6D
Error code 6E
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Error code 7C
Error code 7D
Error code 84 (Jam Rear)
Error code 88 (Jam Inside)
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Error code 8A (T1)
Error code 8B (LT)
Error code 8C (MP)
Error code 9D
Error code A2
Error code A3
Error code A5
Error code A6
Error code A7
Error code AD
Error code AE
Error code AF
Error code B0
Error code B2
Error code B3
Error code B4
Error code B5
Error code B6
Error code B9
Error code BB
Error code BD
Error code BE
Error code BF
Error code C0(K)
Error code C1(Y)
Error code C2(M)
Error code C3(C)
Error code C4
Error code C5
Error code C6
Error code C8
Error code CA
Error code CB
Error code CC
Error code CD
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Error code CE
Error code CF
Error code D0-DF
Error code E6
Error code EF
Error code F8
3.PAPER FEEDING PROBLEMS
3.3Paper Jam
Paper jam in the paper tray and front cover
Paper jam in the back cover and paper eject section
Paper jam in the DX paper feeding section
3.4Dirt on Paper
3.5Wrinkles
4.IMAGE DEFECT TROUBLESHOOTING
4.2Diameter of Rollers
4.3Troubleshooting Image Defect
Light on the whole page
One color is light
Faulty registration
Dark
Poor fixing
Completely blank
Image distortion
All one color
Dirt on the back of paper
Vertical streaks
Vertical streaks in a light background
Horizontal stripes
White vertical streaks on one color image
White horizontal stripes on one color image
Faint print
White spots on one color image
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One color spots or dirt
One color band
Downward fogging of solid color
Horizontal lines
Ghost
Color misregistration
Fogging
Unstable color density
Hollow print
Dirt on the bottom end of paper
5.SOFTWARE SETTING PROBLEMS
6.NETWORK PROBLEMS
7.TROUBLESHOOTING OF THE COMMUNICATIONS ERRORS
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8.TROUBLESHOOTING OF THE CONTROL PANEL
The control panel does not work
Printing from Macintosh applications fails
9.TROUBLESHOOTING OF FAX FUNCTIONS
Speed dialing and One-touchdialing can't be used
FAX can't be received
No bell ring
Speaker is silent during on-hookdialing
Dialing function does not switch between "tone" and "pulse
10.OTHERS PROBLEMS
Pickup function of paper tray does not work
The new toner is not detected
CHAPTER 2 PERIODICAL MAINTENANCE
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2.PERIODICAL REPLACEMENT PARTS
2.1Periodical Replacement Parts
2.2Procedures to Replace Periodical Replacement Parts
2.2.1 Fuser Unit & Toner Filter Frame ASSY <Uninstalling Procedure
<Installing Procedure
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2.2.2Laser Unit
<Uninstalling Procedure
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18a
18b
18d
18e
18c
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2.2.3Paper Feeding Kit (PF Kit 1, PF Kit 2) <Uninstalling Procedure
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2.2.4MP Paper Feeding Kit (PF Kit MP) <Uninstalling Procedure
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2.3Parts Life Reset Function
CHAPTER 3 DISASSEMBLY AND ASSEMBLY
1.SAFETY PRECAUTIONS
2.PACKING
3.SCREW TORQUE LIST
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4.LUBRICATION
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5.OVERVIEW OF GEARS
PF DRIVE
6.HARNESS ROUTING
3T1 PE/edge sensor PCB ASSY, Belt cleaner release sensor PCB ASSY
4Develop release sensor PCB ASSY
5Toner sensor PCB ASSY K, Y, M, C (TE/NEW)
6Laser unit
7Develop press drive L ASSY
(Develop release motor ASSY, Front cover interlock switch ASSY)
8LVPS fan (PS)
9PS PCB unit
10NCU unit (MFC-9840CDWonly)
11Paper feed/belt cleaner motor ASSY
12ADF unit
13ADF unit (Document front sensor 1, Document front sensor 2)
14ADF unit (Document rear sensor, Switch back sensor)
15ADF unit (S/B solenoid ASSY, PF solenoid ASSY)
16Document scanner unit (CCD unit, HP sensor)
17Document scanner unit (Scanner motor, FG harness FB)
18Panel unit
19Speaker ASSY
20Wireless LAN PCB ASSY (MFC-9840CDWonly)
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7.DISASSEMBLY FLOW
8.DISASSEMBLY PROCEDURE
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8.2DX Feed ASSY
8.3MP Cover ASSY/ MP Paper Guide ASSY
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8.4MP Lift Arm 2/ MP Roller Holder ASSY
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8.5Fuser Unit/ Toner Filter Frame ASSY
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8.6Back Cover Upper
8.7Paper Eject ASSY DX
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8.8Back Cover ASSY
8.9Paper Guide/ HV TR Top Cover
8.10Transfer HVPS PCB Unit
Registration-mark
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11b
11a
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8.12Side Cover L ASSY
8.13Side Plate LB
8.14Drum Unit Fan (OPC)
8.15Side Cover R ASSY
8.16Paper stopper
3b 3a
8.17Driver PCB ASSY
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8.18Pull arm L, R/ Hinge Protection Cover ASSY
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8.19ADF Unit
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10b
10a
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22b
22a
24b
24a
26b
26a
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29a
29b
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47b
51b
51a
53b
53c
53a
56c
56b
56a
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59b
59a
63a
63b
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69b
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83b
83a
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8.20Panel Unit
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8.21Document Scanner Unit
4b 4b
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12b
12a
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8.22NCU PCB ASSY (MFC-9840CDWonly)
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8.23Battery ASSY
8.24Joint Cover ASSY
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17a
17b
8.25Speaker ASSY
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8.26Roller Holder ASSY
8.27Paper Feed Frame Unit/ T1 PE/Edge Sensor PCB ASSY
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8.28Belt Cleaner Release Sensor PCB ASSY
8.29THM/HUM Sensor Holder ASSY
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8.30Release Rack
8.31Front Door Unit ASSY
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8.32Harness Cover MP
8.33Front Door Sub
8.34EL Electrode Spring L/R
8.35Hook Cover/ Front Cover Release Button/ Button Spring/ Front Door Main
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8.36 Hook Shaft/ Hook/ Hook Spring
8.37Engine PCB ASSY
8.38Main PCB ASSY/ Ground Plate/ Ground Spring Plate
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8.39Waste Toner Near/Full Sensor ASSY
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8.40Laser Unit/ Hook Slope
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8.41Develop Drive Motor ASSY
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8.42Drum Drive ASSY/ Drum Phase Sensor PCB ASSY 1
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8.43Drive Frame Unit ASSY
8.44Paper Feed/Belt Cleaner Motor ASSY
8.45Develop Release Sensor PCB ASSY
8.46Develop Press Drive L ASSY
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8.47Front Cover Interlock Switch ASSY
8.48Toner Sensor PCB ASSY K, Y, M, C (TE/NEW)
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8.49New Toner Actuator/ New Toner Actuator Spring
8.50Side Plate R ASSY
8.51Drum Lock Lever L
8.52Drum Lock Lever R
8.53Charge HVPS PCB ASSY
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8.54Toner LED PCB ASSY
8.55Fuser Unit Fan (FU)
8.56LVPS Fan (PS)
8.57Air Intake Fan (AIR)
8.58PS PCB Unit
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8.59Belt Unit Drive Motor ASSY
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9.DISASSEMBLY PROCEDURE (LT-100CL)
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9.2LT Cover Rear
9.3LT Cover Left
9.4LT Cover Right
9.5LT Relay PCB ASSY
9.6LT Solenoid ASSY
9.7Collar
9.8Cassette Switch ASSY
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9.9LT Paper Feed Frame Unit
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1. IF YOU REPLACE THE MAIN PCB
<Procedures
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2.IF YOU REPLACE THE ENGINE PCB
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3.IF YOU REPLACE THE FB UNIT
CHAPTER 5 SERVICE FUNCTIONS
1.MAINTENANCE MODE
1.3List of Maintenance-modeFunctions
1.4Detailed Description of Maintenance-modeFunctions
1.4.1EEPROM Parameter Initialization (Function code 01, 91)
<Function
1.4.2Printout of Scanning Compensation Data (Function code 05)
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1.4.5Test Pattern (Function code 09)
1.4.6Worker Switch (WSW) Setting and Printout
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1.4.7Operational Check of LCD (Function code 12)
1.4.8Operational Check of Control Panel Button (Function code 13)
1.4.9ROM Version Check (Function code 25)
1.4.10 Drum Unit Cleaning (Function code 31)
< Function
< Operating Procedure
1.4.11 Operational Check of Sensors (Function code 32)
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1.4.13 EEPROM Customizing (User-accessible)(Function code 52)
1.4.14 Received Data Transfer Function (Function code 53) (MFC-9840CDWonly)
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1.4.15 Fine Adjustment of Scan Start/End Positions (Function code 54)
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1.4.17 Adjustment of Color Registration (Maintenance Mode 66)
Manual Adjustment of Color Registration
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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-markSensor (Function code 75)
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1.4.22 Operational Check of Fans (Function code 78)
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1.4.23 Display of the Machine’s Log Information (Function code 80)
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1.4.24 Error Code Indication (Function code 82)
1.4.25Developing Bias Voltage Correction (Function code 83)
1.4.26 Output of Transmission Log to the Telephone Line (Function code 87)
1.4.27Exit from the Maintenance Mode (Function code 99)
2.OTHER SERVICE FUNCTIONS
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2.2Develop Roller/ Developing Bias Voltage Counter Reset Function
2.3Drum Unit Cleaning Mode
2.4Fuser Motor Speed Adjustment Mode
CHAPTER 6 CIRCUIT DIAGRAMS, WIRING DIAGRAM
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NCU PCB Circuit Diagram
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APPENDIX 1 WORKER SWITCH SETTINGS (WSW)
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< WSW01
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< WSW02
< WSW03
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< WSW04
< WSW05
< WSW06
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< WSW07
< WSW08
< WSW09
< WSW10
< WSW11
< WSW12
< WSW13
< WSW14
< WSW15
< WSW16
< WSW17
< WSW18
< WSW19
< WSW20
< WSW21
< WSW22
< WSW23
< WSW24
< WSW25
< WSW26
< WSW27
< WSW28
< WSW29
< WSW30
< WSW31
< WSW32
< WSW33
< WSW34
< WSW35
< WSW36
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< WSW37
< WSW38
< WSW39
< WSW40
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< WSW41
< WSW42
< WSW43
< WSW44
< WSW45
< WSW46
< WSW47
< WSW48
< WSW49
< WSW50
< WSW51
< WSW52
< WSW53
< WSW54
< WSW55
< WSW56
< WSW57
< WSW58
< WSW59
< WSW60
< WSW61
< WSW62
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APPENDIX 2 DELETION OF PERSONAL INFORMATION
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APPENDIX 3 SERIAL NUMBERING SYSTEM
Waste toner box serial label
Belt unit serial label
Toner cartridge(K, Y, M, C) and Drum unit serial label
APPENDIX 4 SCREW CATALOGUE
Taptite, pan B
Taptite, B
Taptite, flat B
Screw flanged
Screw pan (S/P washer)
APPENDIX 5 HOW TO MAKE THE DRUM UNIT REMOVE SHEET
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APPENDIX 6 REFERENCES
Charge