This service manual covers the Brother DCP-7030, DCP-7040, DCP-7045N, MFC-7320, MFC-7340, MFC-7440N, MFC-7450, MFC-7840N, and MFC-7840W models. These devices are engineered for reliable performance in various office environments, offering a range of functionalities designed to enhance productivity. Their robust construction and advanced features ensure consistent operation and user satisfaction, making them a valuable asset for any professional setting.
This comprehensive English-language service manual provides detailed information essential for the maintenance, repair, and troubleshooting of the specified Brother models. It includes in-depth diagnostic procedures, detailed repair and maintenance instructions, reset procedures, troubleshooting codes, and clear diagrams and pictures. Furthermore, the manual covers consumable and replacement parts identification, disassembly and assembly procedures, lubrication, screw torque specifications, adjustments, and settings for various components, along with circuit and wiring diagrams. Appendices offer valuable information on worker switch settings, personal information deletion, serial numbering systems, screw catalogues, glossaries, and references, ensuring technicians and owners have all the necessary resources.
Service Manual Brother DCP-7030, DCP-7040, DCP-7045N, MFC-7320, MFC-7340, MFC-7440N, MFC-7450, MFC-7840N, MFC-7840W;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Brother.
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-7030, DCP-7040, DCP-7045N, MFC-7320, MFC-7340, MFC-7440N, MFC-7450, MFC-7840N, MFC-7840W photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:
PREFACE
REGULATION
SAFETY INFORMATION
CHAPTER 1. TROUBLESHOOTING
1. INTRODUCTION
1.1 Precautions
1.2 Part names
1.3 Initial Check
2. ERROR CAUSE
2.1 Error indication
2.2 Error Code Cause and Remedy
2.2.1 Recoverable User Check Errors
2.2.2 Service Call Error
3. PAPER FEEDING PROBLEMS
3.1 No Feeding
3.2 Double Feeding
3.3 Paper Jam
3.4 Dirt on Paper
3.5 Wrinkles or creases
3.6 Waves in the paper / folds in the paper at the eject roller 2
4. TROUBLESHOOTING OF DOCUMENT FEEDING
4.1 No Feeding
4.2 Double feeding
4.3 Paper Jam
5. IMAGE DEFECT TROUBLESHOOTING (Defect Of the Print)
5.1 Image Defect Examples
5.2 Diameter of Rollers
5.3 Troubleshooting Image Defect
6. TROUBLESHOOTING OF SCANNIG
6.1 Cannot scan the document in the FB unit.
(If scan the document, it is completely white or black.)
6.2 Cannot scan the document in the ADF unit.
(If scan the document, it is completely white or black.)
6.3 Print of the scanning document is light or dark
6.4 Vertical streaks (White or Black vertical streaks)
6.5 Poor fixing
6.6 Image distortion
7. SOFTWARE SETTING PROBLEMS
8. NETWORK PROBLEMS
9. TROUBLESHOOTING OF THE COMMUNICATIONS ERROR
10. Troubleshooting of the control panel
11. Troubleshooting of fax functions
12. OTHERS PROBLEMS
CHAPTER 2. PERIODICAL MAINTENANCE
1. CONSUMABLE PARTS
2. PERIODICAL PEPLACEMENT PARTS
CHAPTER 3. DISASSEMBLY AND ASSEMBLY
1. SAFETY PRECAUTIONS
2. PACKING
3. SCREW TORQUE LIST
4. LUBRICATION
5. OVERVIEW OF GEARS
6. HARNESS ROUTING
7. DISASSEMBLY FLOW
8. DISASSEMBLY PROCEDURE
8.1 SEPARATION PAD ASSY
8.2 FRONT COVER ASSY
8.2.1 FRONT COVER ASSY
8.2.2 PAPER STOPPER L / PAPER STOPPER S
8.3 BACK COVER / OUTER CHUTE ASSY
8.3.1 BACK COVER
8.3.2 OUTER CHUTE ASSY
8.4 FUSER COVER ASSY
8.4.1 FUSER COVER ASSY
8.4.2 EJECT ACTUATOR / EJECT ACTUATOR SPRING
8.4.3 EJECT ROLLER ASSY 1 / BUSH C / BUSH R / BUSH L
8.5 JOINT COVER SUB CHUTE ASSY
8.6 INNER CHUTE ASSY
8.7 FUSER UNIT
8.8 CORNER COVER
8.9 SIDE COVER L ASSY / SIDE COVER SUB L
8.9.1 SIDE COVER L ASSY
8.9.2 SIDE COVER SUB L
8.10 MAIN SHIELD COVER PLATE
8.11 ADF UNIT
8.11.1 ADF UNIT
8.11.2 HINGE R / HINGE ARM / HINGE ASSY L
8.11.3 ADF COVER ASSY
8.11.4 GEAR COVER
8.11.5 DOCUMENT SEPARATOR ROLLER SHAFT ASSY
8.11.6 UPPER DOCUMENT CHUTE ASSY
8.11.7 LOWER DOCUMENT CHUTE ASSY
8.11.8 ADF SENSOR PCB ASSY
8.11.9 LF ROLLER ASSY
8.11.10EJECTION ROLLER ASSY
8.11.11DRIVE FRAME ASSY
8.11.12ADF MOTOR
8.11.13PRESSURE ROLLER ASSY
8.11.14DOCUMENT STOPPER
8.11.15DOCUMENT DRESS COVER
8.12 DOCUMENT SCANNER UNIT
8.12.1 DOCUMENT SCANNER UNIT
8.12.2 CORD HOOK
8.12.3 PANEL UNIT
8.12.4 PANEL PCB ASSY
8.12.5 RUBBER KEYS L/R
8.12.6 LCD
8.12.7 PRINTED PANEL COVER
8.12.8 ADDRESS LABEL
8.13 PULL ARM L/R
8.14 PULL ARM GUIDE
8.15 NCU PCB
8.16 SPEAKER UNIT
8.17 BATTERY ASSY
8.18 SIDE COVER R ASSY
8.19 REGISTRATION GROUNDING SPRING
8.20 ROLLER HOLDER ASSY
8.21 WIRELESS LAN PCB ASSY (only MFC7840W)
8.22 MAIN PCB ASSY
8.23 JOINT COVER ASSY / PAPER SUPPORTER
8.24 HIGH-VOLTAGE PS PCB ASSY
8.25 NEW TONER SENSOR HARNESS ASSY
8.26 FILTER ASSY
8.27 LASER UNIT
8.28 FAN MOTOR 60 UNIT / COVER SENSOR HARNESS ASSY / TONER LED PCB ASSY
8.28.1 FAN MOTOR 60 UNIT
8.28.2 COVER SENSOR HARNESS ASSY
8.28.3 TONER LED PCB ASSY
8.29 LVPS
8.29.1 LVPS PCB UNIT
8.29.2 LV SHIELD PLATE 2
8.30 REGISTRATION FRONT SENSOR PCB ASSY
8.31 REGISTRATION REAR SENSOR PCB ASSY
8.32 DRIVE SUB ASSY
8.33 DEV JOINT / DEV GEAR JOINT/53R / REGISTRATION PENDULUM GEAR SPRING
8.34 THERMISTOR HARNESS UNIT
8.35 TONER SENSOR PCB UNIT ASSY
8.36 REGISTRATION SOLENOID / T1 SOLENOID
8.36.1 REGISTRATION SOLENOID
8.36.2 T1 SOLENOID
8.37 MAIN SHIELD PLATE / EJECT SENSOR PCB ASSY
8.38 RUBBER FOOT
8.39 MAIN FRAME L ASSY
CHAPTER 4. ADJUSTMENTS AND UPDATING OF SETTINGS,
REQUIRED AFTER PARTS REPLACEMENT
1. IF YOU REPLACE THE MAIN PCB
2. IF YOU REPLACE THE WIRELESS LAN PCB
3. IF YOU REPLACE THE LASER UNIT
4. IF YOU REPLACE THE FB UNIT
CHAPTER 5. SERVICE FUNCTIONS
1. MAINTENANCE MODE
1.1 How to Enter the Maintenance Mode
1.2 How to Enter the End User-accessible Maintenance Mode
1.3 List of Maintenance-mode Functions
1.4 Detailed Description of Maintenance-mode Functions
1.4.1 EEPROM Parameter Initialization (Function code 01, 91)
1.4.2 Printout of Scanning Compensation Data (Function code 05)
1.4.3 Placement of CIS Unit in Position for Transportation (Function code 06)
1.4.4 ADF Performance Test (Function code 08)
1.4.5 Test Pattern (Function code 09)
1.4.6 Worker Sw WSW) Setting and Printout
1.4.7 Operational Check of LCD (Function code 12)
1.4.8 Operational Check of Control Panel Button (Function code 13)
1.4.9 ROM Version Check (Function code 25)
1.4.10 Operational Check of Sensors (Function code 32)
1.4.11 PC Print Function setting (Function code 32)
1.4.12 Received Data Transfer Function (Function code 53) (MFC-7840W/7840N/7450/7440N/7340/7320 only)
1.4.13 Fine Adjustment of Scan Start/End Positions (Function code 54)
1.4.14 Acquisition of White Level Data (Function code 55)
1.4.15 Paper Feeding and Ejecting Test (Function code 67)
1.4.16 EEPROM Customizing (Function code 74)
1.4.17 Operational Check of Fans (Function code 78)
1.4.18 Display of the Machine's Log Information (Function code 80)
1.4.19 Error Code Indication (Function code 82)
1.4.20 Output of Transmission Log to the Telephone Line (Function code 87) (only MFC7840W/7840N/7450/7440N/7340/7320)
1.4.21 Exit from the Maintenance Mode (Function code 99)
2. OTHER SERVICE FUNCTIONS
2.1 User Maintenance Mode
2.2 Resetting the developing bias voltage counter
CHAPTER 6. CIRCUIT DIAGRAMS, WIRING DIAGRAM
APPENDIX 1 WORKER SWITCH Settings (WSW)
APPENDIX 2 DELETION OF PERSONAL INFORMATION
APPENDIX 3 SERIAL NUMBERING SYSTEM
APPENDIX 4 SCREW CATALOGUE
APPENDIX 5 GLOSSARY
APPENDIX 6 REFERENCES
Number of pages: 314.
Service Manual Brother DCP-7030, DCP-7040, DCP-7045N, MFC-7320, MFC-7340, MFC-7440N, MFC-7450, MFC-7840N, MFC-7840W;
This manual is in the PDF format and have detailed Diagrams, pictures and full procedures to diagnose and repair your Brother.
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-7030, DCP-7040, DCP-7045N, MFC-7320, MFC-7340, MFC-7440N, MFC-7450, MFC-7840N, MFC-7840W photocopier. You can find easily everything what do you need.
To see what contain, please read table of contents:
PREFACE
REGULATION
SAFETY INFORMATION
CHAPTER 1. TROUBLESHOOTING
1. INTRODUCTION
1.1 Precautions
1.2 Part names
1.3 Initial Check
2. ERROR CAUSE
2.1 Error indication
2.2 Error Code Cause and Remedy
2.2.1 Recoverable User Check Errors
2.2.2 Service Call Error
3. PAPER FEEDING PROBLEMS
3.1 No Feeding
3.2 Double Feeding
3.3 Paper Jam
3.4 Dirt on Paper
3.5 Wrinkles or creases
3.6 Waves in the paper / folds in the paper at the eject roller 2
4. TROUBLESHOOTING OF DOCUMENT FEEDING
4.1 No Feeding
4.2 Double feeding
4.3 Paper Jam
5. IMAGE DEFECT TROUBLESHOOTING (Defect Of the Print)
5.1 Image Defect Examples
5.2 Diameter of Rollers
5.3 Troubleshooting Image Defect
6. TROUBLESHOOTING OF SCANNIG
6.1 Cannot scan the document in the FB unit.
(If scan the document, it is completely white or black.)
6.2 Cannot scan the document in the ADF unit.
(If scan the document, it is completely white or black.)
6.3 Print of the scanning document is light or dark
6.4 Vertical streaks (White or Black vertical streaks)
6.5 Poor fixing
6.6 Image distortion
7. SOFTWARE SETTING PROBLEMS
8. NETWORK PROBLEMS
9. TROUBLESHOOTING OF THE COMMUNICATIONS ERROR
10. Troubleshooting of the control panel
11. Troubleshooting of fax functions
12. OTHERS PROBLEMS
CHAPTER 2. PERIODICAL MAINTENANCE
1. CONSUMABLE PARTS
2. PERIODICAL PEPLACEMENT PARTS
CHAPTER 3. DISASSEMBLY AND ASSEMBLY
1. SAFETY PRECAUTIONS
2. PACKING
3. SCREW TORQUE LIST
4. LUBRICATION
5. OVERVIEW OF GEARS
6. HARNESS ROUTING
7. DISASSEMBLY FLOW
8. DISASSEMBLY PROCEDURE
8.1 SEPARATION PAD ASSY
8.2 FRONT COVER ASSY
8.2.1 FRONT COVER ASSY
8.2.2 PAPER STOPPER L / PAPER STOPPER S
8.3 BACK COVER / OUTER CHUTE ASSY
8.3.1 BACK COVER
8.3.2 OUTER CHUTE ASSY
8.4 FUSER COVER ASSY
8.4.1 FUSER COVER ASSY
8.4.2 EJECT ACTUATOR / EJECT ACTUATOR SPRING
8.4.3 EJECT ROLLER ASSY 1 / BUSH C / BUSH R / BUSH L
8.5 JOINT COVER SUB CHUTE ASSY
8.6 INNER CHUTE ASSY
8.7 FUSER UNIT
8.8 CORNER COVER
8.9 SIDE COVER L ASSY / SIDE COVER SUB L
8.9.1 SIDE COVER L ASSY
8.9.2 SIDE COVER SUB L
8.10 MAIN SHIELD COVER PLATE
8.11 ADF UNIT
8.11.1 ADF UNIT
8.11.2 HINGE R / HINGE ARM / HINGE ASSY L
8.11.3 ADF COVER ASSY
8.11.4 GEAR COVER
8.11.5 DOCUMENT SEPARATOR ROLLER SHAFT ASSY
8.11.6 UPPER DOCUMENT CHUTE ASSY
8.11.7 LOWER DOCUMENT CHUTE ASSY
8.11.8 ADF SENSOR PCB ASSY
8.11.9 LF ROLLER ASSY
8.11.10EJECTION ROLLER ASSY
8.11.11DRIVE FRAME ASSY
8.11.12ADF MOTOR
8.11.13PRESSURE ROLLER ASSY
8.11.14DOCUMENT STOPPER
8.11.15DOCUMENT DRESS COVER
8.12 DOCUMENT SCANNER UNIT
8.12.1 DOCUMENT SCANNER UNIT
8.12.2 CORD HOOK
8.12.3 PANEL UNIT
8.12.4 PANEL PCB ASSY
8.12.5 RUBBER KEYS L/R
8.12.6 LCD
8.12.7 PRINTED PANEL COVER
8.12.8 ADDRESS LABEL
8.13 PULL ARM L/R
8.14 PULL ARM GUIDE
8.15 NCU PCB
8.16 SPEAKER UNIT
8.17 BATTERY ASSY
8.18 SIDE COVER R ASSY
8.19 REGISTRATION GROUNDING SPRING
8.20 ROLLER HOLDER ASSY
8.21 WIRELESS LAN PCB ASSY (only MFC7840W)
8.22 MAIN PCB ASSY
8.23 JOINT COVER ASSY / PAPER SUPPORTER
8.24 HIGH-VOLTAGE PS PCB ASSY
8.25 NEW TONER SENSOR HARNESS ASSY
8.26 FILTER ASSY
8.27 LASER UNIT
8.28 FAN MOTOR 60 UNIT / COVER SENSOR HARNESS ASSY / TONER LED PCB ASSY
8.28.1 FAN MOTOR 60 UNIT
8.28.2 COVER SENSOR HARNESS ASSY
8.28.3 TONER LED PCB ASSY
8.29 LVPS
8.29.1 LVPS PCB UNIT
8.29.2 LV SHIELD PLATE 2
8.30 REGISTRATION FRONT SENSOR PCB ASSY
8.31 REGISTRATION REAR SENSOR PCB ASSY
8.32 DRIVE SUB ASSY
8.33 DEV JOINT / DEV GEAR JOINT/53R / REGISTRATION PENDULUM GEAR SPRING
8.34 THERMISTOR HARNESS UNIT
8.35 TONER SENSOR PCB UNIT ASSY
8.36 REGISTRATION SOLENOID / T1 SOLENOID
8.36.1 REGISTRATION SOLENOID
8.36.2 T1 SOLENOID
8.37 MAIN SHIELD PLATE / EJECT SENSOR PCB ASSY
8.38 RUBBER FOOT
8.39 MAIN FRAME L ASSY
CHAPTER 4. ADJUSTMENTS AND UPDATING OF SETTINGS,
REQUIRED AFTER PARTS REPLACEMENT
1. IF YOU REPLACE THE MAIN PCB
2. IF YOU REPLACE THE WIRELESS LAN PCB
3. IF YOU REPLACE THE LASER UNIT
4. IF YOU REPLACE THE FB UNIT
CHAPTER 5. SERVICE FUNCTIONS
1. MAINTENANCE MODE
1.1 How to Enter the Maintenance Mode
1.2 How to Enter the End User-accessible Maintenance Mode
1.3 List of Maintenance-mode Functions
1.4 Detailed Description of Maintenance-mode Functions
1.4.1 EEPROM Parameter Initialization (Function code 01, 91)
1.4.2 Printout of Scanning Compensation Data (Function code 05)
1.4.3 Placement of CIS Unit in Position for Transportation (Function code 06)
1.4.4 ADF Performance Test (Function code 08)
1.4.5 Test Pattern (Function code 09)
1.4.6 Worker Sw WSW) Setting and Printout
1.4.7 Operational Check of LCD (Function code 12)
1.4.8 Operational Check of Control Panel Button (Function code 13)
1.4.9 ROM Version Check (Function code 25)
1.4.10 Operational Check of Sensors (Function code 32)
1.4.11 PC Print Function setting (Function code 32)
1.4.12 Received Data Transfer Function (Function code 53) (MFC-7840W/7840N/7450/7440N/7340/7320 only)
1.4.13 Fine Adjustment of Scan Start/End Positions (Function code 54)
1.4.14 Acquisition of White Level Data (Function code 55)
1.4.15 Paper Feeding and Ejecting Test (Function code 67)
1.4.16 EEPROM Customizing (Function code 74)
1.4.17 Operational Check of Fans (Function code 78)
1.4.18 Display of the Machine's Log Information (Function code 80)
1.4.19 Error Code Indication (Function code 82)
1.4.20 Output of Transmission Log to the Telephone Line (Function code 87) (only MFC7840W/7840N/7450/7440N/7340/7320)
1.4.21 Exit from the Maintenance Mode (Function code 99)
2. OTHER SERVICE FUNCTIONS
2.1 User Maintenance Mode
2.2 Resetting the developing bias voltage counter
CHAPTER 6. CIRCUIT DIAGRAMS, WIRING DIAGRAM
APPENDIX 1 WORKER SWITCH Settings (WSW)
APPENDIX 2 DELETION OF PERSONAL INFORMATION
APPENDIX 3 SERIAL NUMBERING SYSTEM
APPENDIX 4 SCREW CATALOGUE
APPENDIX 5 GLOSSARY
APPENDIX 6 REFERENCES
Number of pages: 314.
