Brother MFC-8912DW Manuals

Manuals and User Guides for Brother MFC-8912DW. We have 1 Brother MFC-8912DW manual available for free PDF download: Service Manual

Brother MFC-8912DW Service Manual

Brother MFC-8912DW Service Manual (373 pages)

Laser MFC

Brand: Brother | Category: Printer | Size: 17.86 MB

Table of Contents

Table of Contents

5
Periodical Maintenance

11
- Chapter 7 Periodical Maintenance
  
  11
  - Regulation
    12
    
    Disconnect Device
    13
  - Safety Information
    18
    
    Additional Information
    23
    
    Unlawful Use of Copying Equipment
    24
- Chapter 1 Specifications
  
  27
  - Specifications List
    29
    
    General
    29
    
    Computer Requirements
    33
    
    Network Connectivity
    34
    
    Service Information
    35
    
    Supplies
    36
    
    Paper
    38
    
    Paper Handling
    38
    
    Media Specifications
    39
    
    Type and Size of Paper
    39
    
    Printable & Scannable Area
    40
    
    Telephone
    40
    
    Copy
    41
    
    FAX (Only for the Models with FAX Function)
    41
    
    Scanner
    42
    
    USB Direct Interface
    42
- Chapter 2 Troubleshooting
  
  43
Table of Contents

45
- Introduction
  46
  - Precautions
    46
  - Checks before Commencing Troubleshooting
    47
- Overview
  49
  - Cross-Section Drawing
    49
    
    Printer Part
    49
    
    ADF Unit/Document Scanner Unit
    50
  - Paper Feeding
    52
    
    Printer Part
    52
    
    Scanning
    53
  - Operation of each Part
    54
  - Block Diagram
    56
  - Main Components
    57
  - Life of Toner Cartridge and Drum Unit
    58
- Error Indications
  63
  - Error Codes
    63
  - Error Messages
    69
  - Communication Errors
    73
  - Error Cause and Remedy
    76
    
    Cartridge Error
    105
  - Troubleshooting for Paper Feeding Problems
    114
    
    Multiple Sheets of Paper Are Fed
    114
    
    Paper Becomes Wrinkled
    114
    
    Paper Is Fed at an Angle
    114
    
    Only Single Surface Is Printed in Duplex Printing Mode
    115
    
    Paper Is Curled
    115
    
    Image Defect Examples
    116
    
    Troubleshooting According to Image Defect
    117
    
    Faulty Registration
    119
    
    Poor Fixing
    120
    
    Image Distortion
    121
    
    Vertical Streaks
    122
    
    Faint Print
    126
    
    White Spots
    127
    
    Black Spots
    128
  - Troubleshooting for Software Problems
    130
    
    Cannot Print Data
    130
  - Troubleshooting for Network Problems
    131
    
    Cannot Print Via Network Connection
    131
  - Troubleshooting for Control Panel Problems
    132
    
    Control Panel Is Inoperable
    132
    
    Nothing Is Displayed on the Lcd
    132
  - Troubleshooting for Toner and Drum Problems
    133
    
    Cartridge Error (Toner Cartridge Cannot be Detected)
    133
    
    Drum Error
    133
  - Troubleshooting for Fuser Unit Problems
    134
  - Fuser Unit Failure
    134
  - Troubleshooting for Laser Unit Problems
    135
  - Laser Unit Failure
    135
  - Troubleshooting for Pcb Problems
    136
  - Troubleshooting for Document Feeding Problems
    137
    
    Document Becomes Wrinkled
    137
    
    Defect Examples
    138
  - Troubleshooting for Fax Problems
    141
    
    Bell Does Not Sound
    141
    
    Communication Error Occurs
    141
    
    Fax Cannot be Received
    141
    
    Fax Cannot be Sent
    141
  - Troubleshooting for Other Problems
    142
Disassembly/Reassembly

144
- Safety Precautions
  147
- Packing
  148
- Screw Catalogue
  149
- Screw Torque List
  150
- Lubrication
  153
- Overview of Gears
  156
- Harness Routing
  158
- Disassembly Flow Chart
  166
- Disassembly Procedure
  168
  - Preparation
    168
  - Paper Tray 1
    169
  - Back Cover / Outer Chute
    171
  - Fuser Cover
    172
  - MP Cover ASSY
    173
  - Front Cover ASSY
    174
  - Side Cover L / Access Cover
    175
  - Side Cover R ASSY
    176
  - ADF Unit
    177
    
    Hinge ASSY L
    179
    
    Hinge R
    179
    
    ADF Cover ASSY
    180
    
    ADF Document Output Support Flap
    180
    
    Document Sub Tray
    180
    
    Gear Cover
    182
    
    Document Separate Roller ASSY
    183
    
    ADF Separation Pad Spring / ADF Separation Pad
    184
    
    Second Side CIS Flat Cable (Duplex Scanning Models Only)
    188
    
    Second Side CIS Unit
    188
    
    Upper ADF Chute
    189
    
    ADF Cover/Document Detection Sensor PCB ASSY / First Side Document Scanning Position Sensor PCB ASSY / Second Side Document Scanning Position Sensor PCB ASSY (Duplex Scanning Models Only)
    191
- Drive Frame Assy / Document Feed Roller Assy
  193
  - ADF Motor ASSY
    198
    
    First Side Document Hold
    198
    
    Panel Cover / Printed Panel Cover
    199
    
    Document Scanner Unit
    206
    
    First Side CIS Unit
    208
    
    Joint Cover
    213
    
    USB Host PCB ASSY
    214
    
    Wireless LAN PCB ASSY
    214
    
    Speaker Unit
    215
    
    Ncu Pcb Assy
    216
    
    Main PCB ASSY
    217
    
    Fuser Unit
    219
    
    Laser Unit
    222
    
    Low-Voltage Power Supply PCB ASSY
    223
    
    Toner LED PCB ASSY
    226
    
    Main Fan
    228
    
    Air Duct / Filter
    230
    
    Relay Front PCB ASSY
    231
    
    Registration Clutch / T1 Clutch
    232
    
    Main Frame L ASSY
    233
    
    Main Motor ASSY
    235
    
    Develop Joint Gear 37 / Develop Joint
    237
    
    LT Drive Gear 29
    238
    
    Toner Sensor PCB ASSY
    239
    
    MP Solenoid
    240
    
    Develop Clutch 51R / Develop One Way Clutch 53
    241
    
    New Toner Actuator
    242
    
    Internal Temperature Thermistor
    243
    
    Fuser Drive Gear 39
    244
    
    Duplex Solenoid
    246
    
    Back Cover Sensor
    247
    
    LT Connector (T1)
    248
    
    T1 Roller Holder ASSY
    249
    
    High-Voltage Power Supply PCB ASSY
    250
    
    Eject Sensor PCB ASSY
    253
    
    MP Roller Holder ASSY / MP Separation Pad ASSY / MP Separation Pad Spring
    254
    
    T1 Paper Feed Sensor PCB ASSY
    256
    
    MP Paper Empty Sensor PCB ASSY / MP Paper Empty Actuator 1 / MP Paper Empty Actuator 2
    257
    
    Registration Front/Rear Sensor PCB ASSY / Registration Front Actuator
    260
    
    Registration Rear Actuator / Registration Actuator Spring
    260
  - Disassembly Procedure (Lt Unit)
    263
    
    Paper Tray 2
    263
    
    T2 Roller Holder ASSY
    265
    
    T2 Side Cover L
    266
    
    T2 Side Cover R
    267
    
    T2 Front Cover ASSY
    268
    
    T2 Relay PCB ASSY
    269
    
    T2 Clutch
    270
    
    T2 Paper Feed Sensor Pcb Assy
    271
    
    T2 Paper Feed Sensor PCB ASSY
    274
  - T2 Back Cover
    275
    
    LT Connector ASSY (T2)
    276
Adjusting and Updating Settings as Required after Parts Replacement

278
Service Functions

294

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