Brother MFC8440DN Manuals

Manuals and User Guides for Brother MFC8440DN. We have 1 Brother MFC8440DN manual available for free PDF download: Service Manual

Brother MFC8440DN Service Manual

Brother MFC8440DN Service Manual (361 pages)

Brand: Brother | Category: All in One Printer | Size: 26.74 MB

Table of Contents

Table of Contents

4
- Regulation
  10
- Safety Information
  12
- Chapter 1 General
  
  14
  - Overview
    14
  - Specifications
    16
  - General
    16
  - General (Continued)
    16
  - Print Media
    17
  - Copy
    17
  - Scanner
    19
  - Printer
    19
  - Interfaces
    20
  - Consumable Items
    20
  - Network (LAN) Board (NC-9100H)
    20
  - Computer Requirements
    21
  - Paper
    22
  - 2.12.1 Type and Size of Paper
    22
  - 2.12.2 Recommended Paper
    22
  - 2.12.3 Paper Capacity of the Paper Trays
    22
  - 2.12.4 Paper Specifications for each Paper Tray
    23
  - Printable Area
    24
  - 2.13.1 Pcl5E/Epson/Ibm Emulation
    24
  - 2.13.2 PCL6/BR-Script3 Emulation
    27
  - Print Speeds with Various Settings
    28
  - Toner Cartridge Weight Information
    28
  - Serial No. Descriptions
    29
- Chapter 2 Installation and Basic Operation
  
  31
- Chapter 3 Theory of Operation
  
  57
  - Electronics
    57
  - General Block Diagram
    57
  - Main PCB Block Diagram
    58
  - Main PCB
    59
  - Cpu
    59
  - Usb
    59
  - Ieee1284
    60
  - Rom
    60
  - Flash ROM
    61
  - Sdram
    61
  - Optional RAM
    62
  - Eeprom
    63
  - Reset Circuit
    63
  - 1.3.10 Engine I/O
    63
  - 1.3.11 Panel I/O
    63
  - 1.3.12 Video I/O
    64
  - 1.3.13 Scanner Control
    64
  - Power Supply
    66
  - Engine PCB
    66
  - Power Supply
    67
  - Low-Voltage Power Supply
    67
  - High-Voltage Power Supply
    68
  - Mechanics
    69
  - Overview of Printing Mechanism
    69
  - Scanner Mechanism
    70
  - Paper Transfer
    71
  - Paper Supply
    71
  - Paper Registration
    71
  - Paper Eject
    72
  - Duplex Printing
    72
  - Sensors
    73
  - Cover Sensors
    73
  - Toner Sensors
    73
  - Cassette Sensor / Paper Empty Sensor
    74
  - Paper Eject Sensor
    74
  - MP-PE Sensor
    75
  - Document Cover Sensor
    75
  - Document Front Sensor /Document Rear Sensor
    76
  - DX-Sensor PCB ASSY
    76
  - Rear Cover Sensor
    77
  - 2.4.10 HP Sensor
    77
  - Drum Unit
    78
  - Photosensitive Drum
    78
  - Primary Charger
    78
  - Transfer Roller
    78
  - Cleaner
    78
  - Toner Cartridge
    78
  - Print Process
    78
  - Charging
    78
  - Exposure Stage
    79
  - Developing
    80
  - Transfer
    80
  - Fixing Stage
    81
- Chapter 4 Disassembly and Re-Assembly
  
  82
  - Safety Precautions
    82
  - Disassembly Flow
    83
  - Disassembly Procedure
    84
  - AC Cord
    84
  - Drum Unit
    84
  - Paper Tray
    85
  - DX Feed ASSY (MFC-8840D/8840DN, DCP-8045D/8045DN Only)
    95
  - Access Cover / Battery
    98
  - Driver PCB Access Cover
    99
  - ADF Unit
    100
  - Document Scanner
    109
  - Panel Unit
    114
  - Rear Cover C (MFC-8440, DCP-8040 Only)
    117
  - Outer Chute (MFC-8440, DCP-8040 Only)
    118
  - Rear Cover MP ASSY / Outer Chute MP ASSY (MFC-8840D/8840DN, DCP-8045D/8045DN Only)
    119
  - Rear Cover L/R
    120
  - Side Cover L/R
    121
  - Joint Cover
    122
  - Front Cover ASSY (MFC-8440, DCP-8040 Only)
    126
  - MP Unit (MFC-8840D/8840DN, DCP-8045D/8045DN Only)
    127
  - Rear Cover Sensor
    132
  - NCU (MFC-8440/8840D/8840DN Only)
    133
  - Fixing Unit
    134
  - Laser Unit
    143
  - Main PCB
    145
  - Base Plate / LV Insulation Sheet
    147
  - DX-Sensor PCB ASSY (MFC-8840D/8840DN, DCP-8045D/8045DN Only)
    148
  - Engine PCB
    149
  - High-Voltage PS PCB ASSY
    150
  - Low-Voltage PS PCB ASSY
    151
  - Paper Feeder
    152
  - Frame L / Drive Unit
    159
  - Reversing Release Solenoid (MFC-8840D/8840DN, DCP-8045D/8045DN Only)
    163
  - Thermistor ASSY
    164
  - Fan Motor 60 Unit LV / Fan Motor 60 Unit
    164
  - Frame R
    165
  - Packing
    167
  - Guidelines for Lead Free Solder
    168
  - Screw Torque List
    171
  - Lubrication
    173
  - Harness Routing
    178
- Chapter 5 Periodic Maintenance
  
  180
  - Consumable Parts
    180
  - Drum Unit
    180
  - Toner Cartridge
    182
  - Periodical Replacement Parts
    186
  - Fixing Unit
    187
  - Paper Feeding Kit
    195
  - Periodical Cleaning
    199
  - Cleaning the Machine Exterior
    199
  - Cleaning the Scanner
    199
  - Cleaning the Printer
    200
  - Cleaning the Drum Unit
    201
  - Cleaning the Scanner Window
    201
  - Cleaning the Electrical Terminals
    202
  - Mtbf / Mttr
    203
- Chapter 6 Troubleshooting
  
  204
  - Introduction
    204
  - Initial Check
    204
  - Warnings for Maintenance Work
    205
  - Identify the Problem
    206
  - Error Message
    207
  - Error Message on the LCD
    207
  - Error Codes Shown in the "MACHINE ERROR X X" Message
    210
  - Paper Problems
    214
  - Paper Loading Problems
    214
  - Original Jams
    215
  - Original Is Jammed in the Top of the ADF Unit
    215
  - Original Is Jammed Inside the ADF Unit
    215
  - Paper Jams
    216
  - Clearing Jammed Paper
    216
  - Paper Is Jammed in the Duplex Tray (for MFC-8840D/8840DN, DCP-8045D/8045DN)
    219
  - Causes & Countermeasures
    220
  - Paper Feeding Problems
    221
  - Software Setting Problems
    223
  - Malfunctions
    226
  - Troubleshooting of the Control Panel
    231
  - Troubleshooting of Fax Functions
    233
  - Image Defects
    237
  - Image Defect Examples
    237
  - Diameter of Rollers
    237
  - Troubleshooting Image Defect
    238
  - Location of Grounding Contacts
    256
  - Drum Unit
    256
  - Machine Body & Paper Tray
    256
  - Incorrect Printout
    257
  - Network Problem
    259
  - Installation Problem
    259
  - Intermittent Problem
    260
  - TCP/IP Troubleshooting
    261
  - UNIX Troubleshooting
    261
  - Windows ® NT/LAN Server (TCP/IP) Troubleshooting
    262
  - Windows ® 95/98/Me Peer to Peer Print (LPR) Troubleshooting
    262
  - Windows 95/98/Me Peer to Peer (HP Jetadmin Compatible Method) Troubleshooting
    262
  - Brother Internet Print (TCP/IP) Troubleshooting
    263
  - Windows 95/98/Me/2000/Xp IPP Troubleshooting
    263
  - 10.11 Novell Netware Troubleshooting
    264
  - 10.12 Appletalk Troubleshooting
    265
  - 10.13 DLC/LLC Troubleshooting
    265
  - Web Browser Troubleshooting (TCP/IP)
    265
  - 10.15 Internet Fax Troubleshooting
    266
- Chapter 7 Maintenance Mode
  
  267
- Appendix 1 Eeprom Customizing Codes
  
  294
- Appendix 2 Installing the Update Data
  
  296
Appendix 3 Firmware Switchs (Wsw)

300
- Appendix 3 Firmware Switchs (Wsw
  
  301
  - WSW01 Dial Pulse Setting
    301
  - WSW 02 Tone Signal Setting
    302
  - WSW 03 PABX Mode Setting
    303
  - WSW 04 TRANSFER Facility Setting
    303
  - WSW 05 1St Dial Tone and Busy Tone Detection
    304
  - WSW06 Pause Button Setting and 2Nd Dial Tone Detection
    305
  - Wsw07
    307
  - Wsw08
    308
  - Wsw09
    309
  - Wsw10
    310
  - WSW11 Busy Tone Setting
    311
  - WSW 12 Signal Detection Condition Setting
    312
  - WSW13 Modem Setting
    313
  - WSW 14 AUTO ANS Facility Setting
    314
  - WSW 15 REDIAL Facility Setting
    315
  - Wsw16
    316
  - Wsw17
    317
  - Wsw18
    318
  - WSW 19 Transmission Speed Setting
    319
  - WSW 20 Overseas Communications Mode Setting
    320
  - Wsw21
    321
  - WSW22 ECM Setting
    321
  - WSW23 Communications Setting
    322
  - Wsw24
    323
  - Wsw25
    323
  - Wsw28
    326
  - Wsw29
    327
  - Wsw30
    327
  - Wsw31
    328
  - Wsw32
    329
  - Wsw33
    329
  - Wsw34
    330
  - Wsw35
    330
  - Wsw36
    331
  - Wsw37
    332
  - Wsw40
    335
  - Wsw41
    336
  - Wsw42
    337
  - Wsw43
    338
  - Speeding up Scanning-1
    339
  - Speeding up Scanning-2
    340
  - Wsw47
    341
  - Wsw48
    342
  - Wsw49
    342
  - Wsw50
    342
- Appendix 4 Circuit Diagrams
  
  343
  - Main PCB Circuit Diagram (2/7
    344
  - Main PCB Circuit Diagram (3/7
    345
  - Main PCB Circuit Diagram (4/7
    346
  - Main PCB Circuit Diagram (5/7
    347
  - Main PCB Circuit Diagram (6/7
    348
  - Main PCB Circuit Diagram (7/7
    349
  - Driver PCB Circuit Diagram
    350
  - Engine PCB Circuit Diagram (1/2
    351
  - Engine PCB Circuit Diagram (2/2
    352
  - NCU PCB Circuit Diagram (U.S.A
    353
  - NCU PCB Circuit Diagram (Europe
    354
  - Control Panel PCB Circuit Diagram
    357
  - Low-Voltage Power Supply PCB Circuit Diagram (200V
    358
  - High-Voltage Power Supply PCB Circuit Diagram (200V
    360

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