Brother DCP-8110d DCP-8110dn DCP-8112dn DCP-8150dn DCP-8152dn DCP-8155dn DCP-8157dn DCP-8250dn MFC-8510dn MFC-8512dn MFC-8515dn MFC-8520dn MFC-8710dw MFC-8712dw MFC-8810dw MFC-8910dw MFC-8912dw MFC-8950dw MFC-8950dwt MFC-8952dw MFC-8952dwt Service Manual

Edition 2012,

Service Manual Brother DCP 8110d DCP 8110dn DCP 8112dn DCP 8150dn DCP 8152dn DCP 8155dn DCP 8157dn DCP 8250dn MFC 8510dn MFC 8512dn MFC 8515dn MFC 8520dn MFC 8710dw MFC 8712dw MFC 8810dw MFC 8910dw MFC 8912dw MFC 8950dw MFC 8950dwt MFC 8952dw MFC 8952dwt;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your  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 the  simulation codes, trouble codes, maintenance procedures, reset procedures, diagnose procedures of Brother DCP-8110d DCP-8110dn DCP-8112dn DCP-8150dn DCP-8152dn DCP-8155dn DCP-8157dn DCP-8250dn MFC-8510dn MFC-8512dn MFC-8515dn MFC-8520dn MFC-8710dw MFC-8712dw MFC-8810dw MFC-8910dw MFC-8912dw MFC-8950dw MFC-8950dwt MFC-8952dw MFC-8952dwt. You can find easily everything what do you need.
To see what contain, please read table of contents:

REGULATION
SAFETY INFORMATION

CHAPTER 1. SPECIFICATIONS
1. SPECIFICATIONS LIST
1.1 General
1.2 Network Connectivity
1.3 Service Information
1.4 Supplies
1.5 Paper
1.5.1 Paper handling
1.5.2 Media specifications
1.5.3 Type and size of paper
1.6 Printable & Scannable Area
1.7 Telephone
1.8 FAX (Only for the models with FAX function)
1.9 Copy
1.10 Scanner
1.11 USB Direct Interface

CHAPTER 2. TROUBLESHOOTING
1. INTRODUCTION
1.1 Precautions
1.2 Checks before Commencing Troubleshooting
2. OVERVIEW
2.1 Cross-section Drawing
2.1.1 Printer part
2.1.2 ADF unit/Document scanner unit
2.2 Paper Feeding
2.2.1 Printer part
2.2.2 Scanning
2.3 Operation of Each Part
2.4 Block Diagram
2.5 Main Components
2.6 Life of Toner Cartridge and Drum Unit
3. ERROR INDICATIONS
3.1 Error Codes
3.2 Error Messages
3.3 Communication Errors
4. TROUBLESHOOTING
4.1 Error Cause and Remedy
4.2 Troubleshooting for Paper Feeding Problems
4.2.1 Multiple sheets of paper are fed
4.2.2 Paper becomes wrinkled
4.2.3 Paper is fed at an angle
4.2.5 Only single surface is printed in duplex printing mode
4.3 Troubleshooting for Image Defects
4.3.1 Image defect examples
4.3.2 Troubleshooting according to image defect
4.4 Troubleshooting for Software Problems
4.4.1 Cannot print data
4.5 Troubleshooting for Network Problems
4.5.1 Cannot print via network connection
4.6 Troubleshooting for Control Panel Problems
4.6.1 Nothing is displayed on the LCD
4.6.2 Control panel is inoperable
4.7 Troubleshooting for Toner and Drum Problems
4.7.1 New toner is not detected
4.7.2 Cartridge error (toner cartridge cannot be detected)
4.7.3 Drum error
4.8 Troubleshooting for Fuser Unit Problems
4.8.1 Fuser unit failure
4.9 Troubleshooting for Laser Unit Problems
4.9.1 Laser unit failure
4.10 Troubleshooting for PCB Problems
4.10.1 Main PCB failure
4.10.2 High-voltage power supply PCB failure
4.10.3 Low-voltage power supply PCB failure
4.11 Troubleshooting for Document Feeding Problems
4.11.1 Multiple sheets of document are fed
4.11.2 Document becomes wrinkled
4.11.3 Document size is not detected correctly
4.12 Troubleshooting for Image Defects
4.12.1 Defect examples
4.12.2 Troubleshooting according to image defect
4.13 Troubleshooting for Fax Problems
4.13.1 Fax cannot be sent
4.13.2 Fax cannot be received
4.13.3 Bell does not sound
4.13.4 Communication error occurs
4.14 Troubleshooting for Other Problems
4.14.1 Machine is not turned ON
4.14.2 Main fan does not rotate
4.14.3 Main motor failure
4.14.4 Unusual noise is generated from the machine
4.14.5 Malfunction of the memory

CHAPTER 3. DISASSEMBLY/REASSEMBLY
1. SAFETY PRECAUTIONS
2. PACKING
3. SCREW CATALOGUE
4. SCREW TORQUE LIST
5. LUBRICATION
6. OVERVIEW OF GEARS
7. HARNESS ROUTING
8. DISASSEMBLY FLOW CHART
9. DISASSEMBLY PROCEDURE
9.1 Preparation
9.2 Paper tray 1
9.3 Back cover / Outer chute
9.4 Fuser cover
9.5 MP cover ASSY
9.6 Front cover ASSY
9.7 Side cover L / Access cover
9.8 Side cover R ASSY
9.9 ADF unit
9.9.1 Hinge ASSY L
9.9.2 Hinge R
9.9.3 ADF document output support flap
9.9.4 Document sub tray
9.9.5 ADF cover ASSY
9.9.6 Gear cover
9.9.7 Document separate roller ASSY
9.9.8 ADF separation pad spring / ADF separation pad
9.9.9 Second side CIS unit / Second side CIS flat cable (duplex scanning models only)
9.9.10 Upper ADF chute
9.9.11 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)
9.9.12 Drive frame ASSY / Document feed roller ASSY 1
9.9.13 ADF motor ASSY
9.9.14 First side document hold
9.10 Panel cover / Printed panel cover
9.11 Document scanner unit
9.11.1 First side CIS unit
9.12 Joint cover
9.13 Wireless LAN PCB ASSY
9.14 USB host PCB ASSY
9.15 Speaker unit
9.16 NCU PCB ASSY
9.17 Main PCB ASSY
9.18 Fuser unit
9.19 Laser unit
9.20 Low-voltage power supply PCB ASSY
9.21 Toner LED PCB ASSY
9.22 Main fan
9.23 Air duct / Filter
9.24 Relay front PCB ASSY
9.25 Registration clutch / T1 clutch
9.26 Main frame L ASSY
9.27 Main motor ASSY
9.28 Develop joint gear 37 / Develop joint
9.29 LT drive gear 29
9.30 Toner sensor PCB ASSY
9.31 MP solenoid
9.32 Develop clutch 51R / Develop one way clutch 53
9.33 New toner actuator
9.34 Internal temperature thermistor
9.35 Fuser drive gear 39
9.36 Duplex solenoid
9.37 Back cover sensor
9.38 LT connector (T1)
9.39 T1 roller holder ASSY
9.40 High-voltage power supply PCB ASSY
9.41 Eject sensor PCB ASSY
9.42 MP roller holder ASSY / MP separation pad ASSY / MP separation pad spring
9.43 T1 paper feed sensor PCB ASSY / T1 paper feed actuator / T1 paper feed actuator spring
9.44 MP paper empty sensor PCB ASSY / MP paper empty actuator 1 / MP paper empty actuator 2
9.45 Registration front/rear sensor PCB ASSY / Registration front actuator / Registration rear actuator / Registration actuator spring
10. DISASSEMBLY PROCEDURE (LT UNIT)
10.1 Paper tray 2
10.2 T2 roller holder ASSY
10.3 T2 side cover L
10.4 T2 side cover R
10.5 T2 front cover ASSY
10.6 T2 relay PCB ASSY
10.7 T2 clutch
10.8 T2 paper feed sensor PCB ASSY
10.9 T2 back cover
10.10LT connector ASSY (T2)

CHAPTER 4. ADJUSTING AND UPDATING SETTINGS AS REQUIRED AFTER PARTS REPLACEMENT
1. IF YOU REPLACE THE MAIN PCB ASSY
1.1 Installing Firmware
1.1.1 Checking firmware version
1.1.2 Installing firmware using USB flash memory
1.1.3 Installing firmware using PC
1.2 Setting by Country
1.3 Initializing the EEPROM of the Main PCB ASSY
1.4 Setting Serial Number and Entering Adjusted Value of Laser Unit
1.5 Acquiring White Level Data
1.6 Adjusting Touch Panel (Touch Panel Models Only)
2. IF YOU REPLACE THE LASER UNIT
2.1 Entering Adjusted Value of Laser Unit
3. IF YOU REPLACE THE LOW-VOLTAGE POWER SUPPLY PCB ASSY
3.1 Resetting Irregular Power Supply Detection Counter
4. IF YOU REPLACE THE HIGH-VOLTAGE POWER SUPPLY PCB ASSY
4.1 Initializing Pre-discharge Detection Parameters
5. IF YOU REPLACE ANY PERIODIC REPLACEMENT PARTS
6. IF YOU REPLACE THE CONTROL PANEL ASSY OR TOUCH PANEL ASSY
6.1 Installing Firmware (Touch Panel Models Only)
6.1.1 Checking firmware version
6.1.2 Installing firmware using USB flash memory
6.1.3 Installing firmware using PC
6.2 Adjusting Touch Panel (Touch Panel Models Only)
6.3 Checking LCD Operation
6.4 Checking Control Panel Operation
7. IF YOU REPLACE THE DOCUMENT SCANNER UNIT, ADF UNIT (DUPLEX SCANNING MODEL), OR CIS UNIT
7.1 Acquiring White Level Data (function code: 55)

CHAPTER 5. SERVICE FUNCTIONS
1. MAINTENANCE MODE
1.1 How to Enter Maintenance Mode
1.1.1 Method of entering end-user accessible maintenance mode
1.1.2 Method of entering maintenance mode for service personnel
1.2 List of Maintenance Mode Functions
1.3 Details of Maintenance Mode Functions
1.3.1 Initialize EEPROM parameters (function code: 01, 91)
1.3.2 Print white level/black level data for document scanning compensation (function code: 05)
1.3.3 Move CIS unit to transportation position (function code: 06)
1.3.4 ADF performance test (function code: 08)
1.3.5 Print test pattern (function code: 09)
1.3.6 Set worker switches (WSW) and print worker switch setting data (function code: 10, 11)
1.3.7 Check LCD operation (function code: 12)
1.3.8 Check control panel button operation (function code: 13)
1.3.9 Display software version (function code: 25)
1.3.10 Check sensor operation (function code: 32)
1.3.11 Display LAN connection status (function code: 33)
1.3.12 Set PC print functions (function code: 43)
1.3.13 Change USB No. return value / Adjust left-end print start position on second side when duplex printing / Change ON/OFF setting for Deep Sleep function (function code: 45)
1.3.14 Set country/language (function code: 52)
1.3.15 Transfer received fax data/log information (function code: 53)
1.3.16 Fine-tune scanning position (function code: 54)
1.3.17 Acquire white level data and set CIS scan area (function code: 55)
1.3.18 Adjust touch panel (function code: 61)
1.3.19 Continuous print test (function code: 67)
1.3.20 Print frame pattern (single-side printing) (function code: 69)
1.3.21 Print frame pattern (duplex printing) (function code: 70)
1.3.22 Print solid pattern (function code: 71)
1.3.23 Setting by country (function code: 74)
1.3.24 Print maintenance information (function code: 77)
1.3.25 Check fan operation (function code: 78)
1.3.26 Display machine log information (function code: 80)
1.3.27 Display machine error code (function code: 82)
1.3.28 Send communication log information to telephone line (function code: 87)
1.3.29 Reset counters for periodic replacement parts (function code: 88)
1.3.30 Quit maintenance mode (function code: 99)
2. OTHER SERVICE FUNCTIONS
2.1 Change ON/OFF Setting for Deep Sleep Mode
2.2 Change ON/OFF Setting for Sleep Mode
2.3 Reset Periodic Replacement Parts
2.4 Reset Developer Roller Counter
2.5 Display ROM Version
2.6 Perform Demo Printing

CHAPTER 6. WIRING DIAGRAM
1. WIRING DIAGRAM

CHAPTER 7. PERIODICAL MAINTENANCE
1. SAFETY PRECAUTIONS
2. PERIODICAL REPLACEMENT PARTS
2.1 Preparation
2.2 Fuser unit
2.3 Laser unit
2.4 MP paper feeding kit
2.5 Paper feeding kit 1
2.6 Paper feeding kit 2

APPENDIX 1 SERIAL NUMBERING SYSTEM
APPENDIX 2 DELETING USER SETTING INFORMATION
APPENDIX 3 INSTALLING MAINTENANCE DRIVER

Number of pages: 373.