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Make/Model Information:

  • Brand:   Brother
  • Models included:
    • Brother DCP-8040
    • Brother DCP-8045D
    • Brother DCP-8045DN
    • Brother MFC-8440
    • Brother MFC-8840D
    • Brother MFC-8840DN

File Information:

  • Type:   Factory Service Manual (FSM)
  • Language:   English
  • Number of pages:   398
  • File size:  ∼ 13.81 MB
  • File Format:   PDF only
  • SME Watermarks:   None
  • Password lock:   No
  • Edit/copy/modify:   Yes
  • SKU:   BMBR-1049

NOTE:  This list was created by program script and may not accurately represent the text from the source pages.   For full preview please click on 'Download sample':

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CHAPTER 1 GENERAL
1. OVERVIEW
2. SPECIFICATIONS
2.1 General
2.2 General (Continued)
2.3 Print Media
2.4 Copy
2.5 Fax
2.6 Scanner
2.7 Printer
2.8 Interfaces
2.9 Consumable Items
2.10 Network (LAN) Board (NC-9100h)
2.11 Computer Requirements
2.12 Paper
2.12.1 Type and size of paper
2.12.2 Recommended paper
2.12.3 Paper capacity of the paper trays
2.12.4 Paper specifications for each paper tray
2.13 Printable Area
2.13.1 PCL5e/EPSON/IBM emulation
2.13.2 PCL6/BR-Script3 emulation
2.14 Print Speeds with Various Settings
2.15 Toner Cartridge Weight Information
3. SERIAL NO. DESCRIPTIONS
CHAPTER 2 INSTALLATION AND BASIC OPERATION
1. CONDITIONS REQUIRED FOR INSTALLATION
1.1 Power Supply
1.2 Environment
2. UNPACKING
3. INSTALL THE MACHINE
3.1 For All Users
3.1.1 Install the Automatic Document Feed (ADF) support
3.1.2 Install the drum unit assembly
3.1.3 Load paper into the paper tray
3.1.4 Release the scanner lock
3.2 Installing the Driver & Software
3.2.1 For USB Interface Cable Users (For Windows ® 98/98SE/Me/2000 Professional/XP)
(For Windows® 95/98/98SE/Me/2000 Professional/XP)
3.2.3 For Windows NT® Workstation Version 4.0 Users
(For Windows® 95/98/98SE/Me/NT/2000 Professional/XP)
3.2.5 For USB Interface Cable Users (For Mac ® OS 8.6 to 9.2 Users)
3.2.6 For USB Interface Cable Users (For Mac ® OS X 10.1/10.2.1 or greater Users)
3.2.7 For Network Interface Cable Users (For Mac ® OS 8.6 to 9.2 Users)
3.2.8 For Network Interface Cable Users (For Mac ® OS X 10.1/10.2.1 or greater Users)
CHAPTER 3 THEORY OF OPERATION
1. ELECTRONICS
1.1 General Block Diagram
1.2 Main PCB Block Diagram
1.3 Main PCB
1.3.1 CPU
1.3.2 USB
1.3.3 IEEE 1284
1.3.4 ROM
1.3.5 Flash ROM
1.3.6 SDRAM
1.3.7 Optional RAM
1.3.8 EEPROM
1.3.9 Reset circuit
1.3.10 Engine I/O
1.3.11 Panel I/O
1.3.12 Video I/O
1.3.13 Scanner control
1.3.14 Power supply
1.4 Engine PCB
1.5 Power Supply
1.5.1 Low-voltage power supply
1.5.2 High-voltage power supply
2. MECHANICS
2.1 Overview of Printing Mechanism
2.2 Scanner Mechanism
2.3 Paper Transfer
2.3.1 Paper supply
2.3.2 Paper registration
2.3.3 Paper eject
2.3.4 Duplex printing
2.4 Sensors
2.4.1 Cover sensors
2.4.2 Toner sensors
2.4.3 Cassette sensor / Paper empty sensor
2.4.4 Paper eject sensor
2.4.5 MP-PE sensor
2.4.6 Document cover sensor
2.4.7 Document front sensor / Document rear sensor
2.4.8 DX-sensor PCB ASSY
2.4.9 Rear cover sensor
2.4.10 HP sensor
2.5 Drum Unit
2.5.1 Photosensitive drum
2.5.2 Primary charger
2.5.3 Transfer roller
2.5.4 Cleaner
2.6 Toner Cartridge
2.7 Print Process
2.7.1 Charging
2.7.2 Exposure stage
2.7.3 Developing
2.7.4 Transfer
2.7.5 Fixing stage
CHAPTER 4 DISASSEMBLY AND RE-ASSEMBLY
1. SAFETY PRECAUTIONS
2. DISASSEMBLY FLOW
3. DISASSEMBLY PROCEDURE
3.1 AC Cord
3.2 Drum Unit
3.3 Paper Tray
3.4 DX Feed ASSY (MFC-8840D/8840DN, DCP-8045D/8045DN only)
3.5 Access Cover / Battery
3.6 Driver PCB Access Cover
3.7 ADF Unit
3.8 Document Scanner
3.9 Panel Unit
3.10 Rear Cover C (MFC-8440, DCP-8040 only)
3.11 Outer Chute (MFC-8440, DCP-8040 only)
(MFC-8840D/8840DN, DCP-8045D/8045DN only)
3.13 Rear Cover L/R
3.14 Side Cover L/R
3.15 Joint Cover
3.16 Front Cover ASSY (MFC-8440, DCP-8040 only)
3.17 MP Unit (MFC-8840D/8840DN, DCP-8045D/8045DN only)
3.18 Rear Cover Sensor
3.19 NCU (MFC-8440/8840D/8840DN only)
3.20 Fixing Unit
3.21 Laser Unit
3.22 Main PCB
3.23 Base Plate / LV Insulation Sheet
3.24 DX-Sensor PCB ASSY (MFC-8840D/8840DN, DCP-8045D/8045DN only)
3.25 Engine PCB
3.26 High-voltage PS PCB ASSY
3.27 Low-voltage PS PCB ASSY
3.28 Paper Feeder
3.29 Frame L / Drive Unit
3.30 Reversing Release Solenoid (MFC-8840D/8840DN, DCP-8045D/8045DN only)
3.31 Thermistor ASSY
3.32 Fan Motor 60 Unit LV / Fan Motor 60 Unit
3.33 Frame R
4. PACKING
5. GUIDELINES FOR LEAD FREE SOLDER
6. SCREW TORQUE LIST
7. LUBRICATION
8. HARNESS ROUTING
CHAPTER 5 PERIODIC MAINTENANCE
1. CONSUMABLE PARTS
1.1 Drum Unit
1.2 Toner Cartridge
2. PERIODICAL REPLACEMENT PARTS
2.1 Fixing Unit
2.2 Paper Feeding Kit
3. PERIODICAL CLEANING
3.1 Cleaning the Machine Exterior
3.2 Cleaning the Scanner
3.3 Cleaning the Printer
3.4 Cleaning the Drum Unit
3.5 Cleaning the Scanner Window
3.6 Cleaning the Electrical Terminals
4. MTBF / MTTR
CHAPTER 6 TROUBLESHOOTING
1. INTRODUCTION
1.1 Initial Check
1.2 Warnings for Maintenance Work
1.3 Identify the Problem
2. ERROR MESSAGE
2.1 Error Message on the LCD
2.2 Error Codes Shown in the “MACHINE ERROR X X” message
3. PAPER PROBLEMS
3.1 Paper Loading Problems
3.2 Original Jams
3.2.1 Original is jammed in the top of the ADF unit
3.2.2 Original is jammed inside the ADF unit
3.3 Paper Jams
3.3.1 Clearing jammed paper
3.3.3 Causes & countermeasures
3.4 Paper Feeding Problems
4. SOFTWARE SETTING PROBLEMS
5. MALFUNCTIONS
6. TROUBLESHOOTING OF THE CONTROL PANEL
7. TROUBLESHOOTING OF FAX FUNCTIONS
8. IMAGE DEFECTS
8.1 Image Defect Examples
8.2 Diameter of Rollers
8.3 Troubleshooting Image Defect
8.4 Location of Grounding Contacts
8.4.1 Drum unit
8.4.2 Machine body & Paper tray
9. INCORRECT PRINTOUT
10. NETWORK PROBLEM
10.1 Installation Problem
10.2 Intermittent Problem
10.3 TCP/IP Troubleshooting
10.4 UNIX Troubleshooting
10.5 Windows ® NT/LAN Server (TCP/IP) Troubleshooting
10.6 Windows ® 95/98/Me Peer to Peer Print (LPR) Troubleshooting
10.7 Windows® 95/98/Me Peer to Peer (HP JetAdmin Compatible Method) Troubleshooting
10.8 Windows ® 95/98/Me/NT 4.0/2000 Peer to Peer Print (NetBIOS) Troubleshooting
10.9 Brother Internet Print (TCP/IP) Troubleshooting
10.10 Windows ® 95/98/Me/2000/XP IPP Troubleshooting
10.11 Novell Netware Troubleshooting
10.12 AppleTalk Troubleshooting
10.13 DLC/LLC Troubleshooting
10.14 Web Browser Troubleshooting (TCP/IP)
10.15 Internet Fax Troubleshooting
CHAPTER 7 MAINTENANCE MODE
1. ENTRY INTO THE MAINTENANCE MODE
2. LIST OF MAINTENANCE–MODE FUNCTIONS
3. DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS
3.1 EEPROM Parameter Initialization (Maintenance mode 01/91)
3.2 Printout of Scanning Compensation Data (Maintenance mode 05)
3.3 Placement of CCD Unit in Position for Transportation (Maintenance mode 06)
3.4 ADF Performance Test (Maintenance mode 08)
3.5 Test Pattern 1 (Maintenance mode 09)
3.6 Firmware Switch Setting and Printout
3.6.1 Firmware switch setting (Maintenance mode 10)
3.6.2 Printout of firmware switch data (Maintenance mode 11)
3.7 Operation Check of LCD (Maintenance mode 12)
3.8 Operational Check of Control Panel PCB (Maintenance mode 13)
3.9 Sensor Operational Check (Maintenance mode 32)
3.10 Received Data Transfer Function (Maintenance mode 53)
3.11 Fine Adjustment of Scan Start/End Positions (Maintenance mode 54)
3.12 CCD Scanner Area Setting (Maintenance mode 55)
3.13 EEPROM Customizing (Maintenance mode 74)
3.14 Printing out of Machine Log Information (Maintenance mode 77)
3.15 Display of the Equipment’s Log Information (Maintenance mode 80)
3.16 Machine Error Code Indication (Maintenance mode 82)
3.17 Output of Transmission Log to the Telephone Line (Maintenance mode 87)
APPENDIX 1 EEPROM CUSTOMIZING CODES
APPENDIX 2 INSTALLING THE UPDATE DATA
1. INSTALLING THE UPDATE DATA TO THE MACHINE
1.1 Connecting the Machine to Your PC
1.2 Setting up the Machine and Your PC
1.3 Installing the Update Data onto the Flash ROM of the Machine
2. SETTING ID CODES TO MACHINES
2.1 Connecting the Machine to Your PC
2.2 Setting Up the Machine and Your PC
2.3 Running the Setup Utility
APPENDIX 3 FIRMWARE SWITCHS (WSW)
4.1 Main PCB Circuit Diagram (1/7)
4.2 Main PCB Circuit Diagram (2/7)
4.3 Main PCB Circuit Diagram (3/7)
4.4 Main PCB Circuit Diagram (4/7)
4.5 Main PCB Circuit Diagram (5/7)
4.6 Main PCB Circuit Diagram (6/7)
4.7 Main PCB Circuit Diagram (7/7)
4.8 Driver PCB Circuit Diagram
4.9 Engine PCB Circuit Diagram (1/2)
4.10 Engine PCB Circuit Diagram (2/2)
4.11 NCU PCB Circuit Diagram (U.S.A.)
4.12 NCU PCB Circuit Diagram (Europe)
4.13 NCU PCB Circuit Diagram (Asia)
4.14 NCU PCB Circuit Diagram (Oceania)
4.15 Control Panel PCB Circuit Diagram
4.16 Low-voltage Power Supply PCB Circuit Diagram (200V)
4.17 Low-voltage Power Supply PCB Circuit Diagram (100V)
4.18 High-voltage Power Supply PCB Circuit Diagram (200V)
4.19 High-voltage Power Supply PCB Circuit Diagram (100V)


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