Brother DCP6690CW MFC6490CW MFC6890CDW Service Manual

Service Manual Brother DCP6690CW MFC6490CW MFC6890CDW;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Brother copier.
You can print, zoom or read any diagram, picture or page from this Service Manual. Every chapter on this manual is fully detailed and contain all theĀ  simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of Brother DCP6690CW MFC6490CW MFC6890CDW photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:

CHAPTER 1. PARTS NAMES AND FUNCTIONS
1.1 OUTLINE
1.2 CONTROL PANEL
1.3 COMBINATIONS OF TWO KEYS FOR SPECIAL FUNCTIONS
1.4 COMPONENTS

CHAPTER 2. SPECIFICATIONS
2.1 GENERAL
2.1.1 General Specifications
2.1.2 Paper Specifications
2.1.3 Printable Area
2.2 SPECIFICATIONS LIST

CHAPTER 3. THEORY OF OPERATION
3.1 OVERVIEW
3.2 MECHANICAL COMPONENTS
3.2.1 Scanner Mechanism
3.2.2 Printing Mechanism
3.2.2.1 Ink supply and ink jet mechanism
[ 1 ] Overview
[ 2 ] Features
[ 3 ] Head/carriage unit
[ 4 ] Ink cartridges
[ 5 ] Ink refill assembly
[ 6 ] Ink supply tubes
3.2.2.2 Head maintenance mechanism
[ 1 ] Overview
[ 2 ] Maintenance unit components
[ 3 ] Mechanisms constituting the head maintenance mechanism
[ 4 ] Power transmission route to the head maintenance mechanism
and motor rotational direction
[ 5 ] Purge types, ink usage, purge counts, and purge codes
[ 6 ] Ink cartridge capacities and the number of printable pages
per ink cartridge
3.2.2.3 Carriage drive mechanism
3.2.2.4 Paper pulling-in, registration, feeding and ejecting mechanisms
3.2.2.5 Duplex print mechanism
3.2.3 Sensors and Actuators
3.3 CONTROL ELECTRONICS
3.3.1 Components

CHAPTER 4. ERROR INDICATION AND TROUBLESHOOTING
4.1 ERROR INDICATION
4.1.1 Equipment Errors
[ 1 ] Error messages appearing on the LCD
[ 2 ] Error codes contained in “MACHINE ERROR X X” messages
4.1.2 Communications Errors (For MFC only)
4.2 TROUBLESHOOTING
4.2.1 Introduction
4.2.2 Precautions
4.2.3 Checking Prior to Troubleshooting
4.2.4 Troubleshooting Based on Problem Type
[ 1 ] Control panel and LCD problems
[ 2 ] FAX problems (For MFC only)
[ 3 ] Communications problems (For MFC only)
[ 4 ] Paper/document feeding problems
[ 5 ] Print-image problems
[ 6 ] PC-driven printing problems
[ 7 ] Printing from memory cards–Compact Flash, Memory Stick,
SD Memory Card, xD-Picture Card and USB flash memory drive
[ 8 ] Wireless LAN (WLAN)
[ 9 ] Others
4.2.5 Problems Encountered Frequently in the Past
[ 1 ] Paper jams
[ 2 ] “MACHINE ERROR 4F” error message
[ 3 ] Ink-related problems
[ 4 ] Auto document feeder (ADF) malfunction
4.2.6 Possible Component Defects and Resulting Problems
[ 1 ] ADF mechanism
[ 2 ] Scanner mechanism
[ 3 ] Head/carriage unit drive and purge mechanisms
[ 4 ] Print head mechanism
[ 5 ] Duplex print mechanism
[ 6 ] Sheet feeder (SF) mechanism
[ 7 ] Paper feeding mechanism
[ 8 ] Speaker
[ 9 ] Control panel
[ 10 ] PCBs
[ 11 ] Adjustments/data in the memories

CHAPTER 5. HANDLING DATA HELD IN THE MACHINE PRIOR TO
REPAIR
5.1 AT THE USER SITE
5.1.1 Transferring Received FAX Data
5.2 AT THE SERVICE SITE
5.2.1 Backing up Machine Information

CHAPTER 6. DISASSEMBLY/REASSEMBLY AND LUBRICATION
6.1 DISASSEMBLY/REASSEMBLY
Safety Precautions
Tightening Torque
Preparation
How to Access the Target Component
Disassembly Flowchart
6.1.1 Scanner Cover (Scanner Unit)
6.1.2 ADF & Document Cover ASSY
6.1.3 Disassembly of ADF & Document Cover ASSY
6.1.4 Edge Covers L and R, Scanner Cover Support, and Damper
6.1.5 Control Panel ASSY
6.1.6 Disassembly of Control Panel ASSY
6.1.7 Backup Battery (for models with backup battery), Side Covers,
Speaker, Upper Cover and Encoder Guard Film
6.1.8 Ink Cartridge Cover, Media Module Cover, Front cover, and WLAN PCB
6.1.9 Main PCB
6.1.10 Outer and Inner Back Covers*, LT cover, and LT Paper Pull-in Roller
ASSY
6.1.11 MJ/PS Shield Unit (MJ PCB* and Power Supply PCB)
6.1.12 Head/Carriage Unit and Ink Refill ASSY
6.1.13 Ink Absorber Box, Ink Absorber Felt, and PF Encoder Disk
6.1.14 Duplex Unit (for duplex print models)
6.1.15 Engine Unit and Flushing Box
6.1.16 Components on the Engine Unit (Earth spring,
Link gear holder DX ASSY*1, Maintenance unit, ASF motor*2,
Carriage motor, Star wheel holder, Paper ejection roller, Platen,
Inner chute ASSY, Sub inner back cover, PF encoder/registration
sensor harness unit, Paper pull-in rollers)
Confidential
6.1.17 Paper Tray ASSY #1 (DX Paper Tray ASSY #1*)
6.1.18 Paper Tray ASSY #2
6.1.19 Routing of the Harnesses, Flat Cables, and Ink Supply Tubes
6.2 LUBRICATION

CHAPTER 7. ADJUSTMENTS AND UPDATING OF SETTINGS,
REQUIRED AFTER PARTS REPLACEMENT
7.1 PREPARATION
7.1.1 Requirements
7.1.2 Installing the Maintenance USB Printer Driver
7.2 IF YOU REPLACE THE HEAD/CARRIAGE UNIT OR ENGINE UNIT
[ 1 ] Update the head property information stored in the EEPROM
on the main PCB
[ 2 ] Clean the new head/carriage unit (Function code 76)
[ 3 ] Print out a test pattern (Function code 09)
[ 4 ] Correct the positioning error of the head/carriage unit
[ 5 ] Update the paper feeding correction value (Function code 58)
[ 6 ] Align vertical print lines (Function code 65)
[ 7 ] Adjust margins in borderless printing (Function code 66)
[ 8 ] Print out a total check pattern
[ 9 ] Switch back to standby
[ 10 ] Replace the ink cartridges with the protective part
7.3 IF YOU REPLACE THE MAIN PCB
[ 1 ] Load update programs/data
[ 2 ] Initialize the EEPROM on the main PCB (Function code 01)
[ 3 ] Customize the EEPROM on the main PCB (Function code 74)
[ 4 ] Check the control panel PCB for normal operation
(Function code 13)
[ 5 ] Check the sensor operation (Function code 32)
[ 6 ] Acquire white level data and set CIS scanner area
(Function code 55)
[ 7 ] Set an ID code and update the head property information
[ 8 ] Back up machine information (Function code 46)
[ 9 ] Update the paper feeding correction value (Function code 58)
[ 10 ] Align vertical print lines (Function code 65)
[ 11 ] Adjust margins in borderless printing (Function code 66)
[ 12 ] Print out an ADF copy chart and make a copy of that chart
in ADF scanning
[ 13 ] Check LCD operation and specify the LCD type
(Function code 12)
[ 14 ] Adjust the touch panel (Function code 78)
(For models with touch panel)
[ 15 ] Get EEPROM data (incl. MAC address) from the WLAN PCB
(For wireless LAN-enabled models)
[ 16 ] Switch back to standby
7.4 IF YOU REPLACE THE ADF UNIT OR ADF-RELATED PARTS
[ 1 ] Check the “Total Quality Check Pattern”
[ 2 ] Print out an ADF copy chart and make a copy of that chart
in ADF scanning
7.5 IF YOU REPLACE THE INK ABSORBER BOX OR FLUSHING BOX
[ 1 ] Reset each of the purge and flushing counters
7.6 IF YOU REPLACE THE CONTROL PANEL ASSY OR CONTROL
PANEL PCB
[ 1 ] Check LCD operation and specify the LCD type
(Function code 12)
[ 2 ] Check the operation of the control panel PCB (Function code 13)
[ 3 ] Adjust the touch panel (Function code 78)
(For models with touch panel)
7.7 IF YOU REPLACE THE SCANNER COVER (SCANNER UNIT)
[ 1 ] Acquire white level data and set CIS scanner area
(Function code 55)
[ 2 ] Check the “Total Quality Check Pattern”
[ 3 ] Print out an ADF copy chart and make a copy of that chart
in ADF scanning
7.8 IF YOU REPLACE THE WLAN PCB (FOR WIRELESS LAN-ENABLED
MODELS)
[ 1 ] Transfer EEPROM data (incl. MAC address) to the main PCB
7.9 IF YOU REPLACE THE DUPLEX UNIT (FOR DUPLEX PRINT MODELS)
[ 1 ] Check the paper feeding and ejecting operations in duplex printing. 7-42

CHAPTER 8. CLEANING
8.1 CLEANING THE EXTERNAL AND INTERNAL SURFACE OF THE MACHINE
8.2 CLEANING THE MAINTENANCE UNIT
8.3 CLEANING THE PAPER PULL-IN ROLLERS (PAPER PICK-UP ROLLERS)
(FOR DUPLEX PRINT MODELS)
8.3.1 Wiping off with a cloth
8.3.2 Cleaning with a cleaning kit

CHAPTER 9. MAINTENANCE MODE
9.1 ENTRY INTO THE MAINTENANCE MODE
9.2 LIST OF MAINTENANCE-MODE FUNCTIONS
9.3 USER-ACCESS TO THE MAINTENANCE MODE
9.4 DETAILED DESCRIPTION OF MAINTENANCE-MODE FUNCTIONS
9.4.1 EEPROM Parameter Initialization (Function code 01, 91)
9.4.2 Printout of Scanning Compensation Data (Function code 05)
9.4.3 ADF Performance Test (Function code 08)
9.4.4 Test Pattern (Function code 09)
9.4.5 Firmware Switch Setting and Printout (Function codes 10 and 11)
(User-accessible)
9.4.6 Operational Check of LCD and Specifying of the LCD Type
(Function code 12) (User-accessible)
9.4.7 Operational Check of Control Panel PCB (Function code 13)
9.4.8 Updating of Firmware Using an External Memory (Function code 28)
9.4.9 Sensor Operational Check (Function code 32)
9.4.10 Backup of Machine Information (Function code 46) (User-accessible)
9.4.11 Setting of Country/Language (Function code 52) (User-accessible)
9.4.12 Transfer of Received FAX Data and/or Equipment’s Log
(Function code 53) (User-accessible)
9.4.13 Fine Adjustment of Scanning Start/End Position (Function code 54)
9.4.14 Acquisition of White Level Data and CIS Scanner Area Setting
(Function code 55)
9.4.15 Updating of Paper Feeding Correction Value (Function code 58)
9.4.16 Checking of CIS Travel (Function code 59)
9.4.17 Travel Check of the Head/Carriage Unit and Initial Setup Mode
(Function code 63)
9.4.18 Alignment of Vertical Print Lines in Monochrome (Function code 65)
9.4.19 Margin Adjustment in Borderless Printing (Function code 66)
(User-accessible)
9.4.20 Updating of Property Data (Function code 68)
9.4.21 Head/Carriage Unit Traveling Speed Check (Function code 69)
9.4.22 EEPROM Customizing (Function code 74)
9.4.23 Travel of Head/Carriage Unit (for removing paper particles and dust
accumulated on the maintenance unit) (Function code 75)
(User-accessible)
9.4.24 Purge Operation (Function code 76) (User-accessible)
9.4.25 Adjustment of Touch Panel (Function code 78)
9.4.26 Display of the Equipment’s Log (Function code 80) (User-accessible)
9.4.27 Equipment Error Code Indication (Function code 82) (User-accessible)
9.4.28 Output of Transmission Log to the Telephone Line (Function code 87)
(User-accessible)
9.4.29 Assurance Mode Switch Setting (Function code 88) (User-accessible)
9.4.30 Cancellation of the Pin TX Lock Mode
(Not applicable to Japanese and U.S.A. models)

Appendix 1. Reading Labels
Appendix 2. Firmware Installation
Appendix 3. EEPROM Customizing Codes
Appendix 4. Firmware Switches (WSW)
Appendix 5. Wiring Diagrams
Appendix 6. Circuit Diagrams
Appendix 7. Deletion of Personal Information

Number of pages: 506.