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BROTHER DCP-8070D, DCP-8080DN, DCP-8085DN, MFC-8370DN, MFC-8380DN, MFC-8480DN, MFC-8880DN, MFC-8890DW Service Manual and Parts Manual

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SERVICE MANUAL TABLE OF CONTENTS

PREFACE
This service manual contains basic information required for after-sales service of the Laser Multi-Function Center (hereinafter referred to as “the machine”). This information is vital to the service personnel to maintain the high printing quality and performance of the machine.
This service manual covers the DCP-8070D/8080DN/8085DN, MFC-8370DN/8380DN/8480DN/8880DN/8890DW machines.
This manual consists of the following chapters:

CHAPTER 1: SPECIFICATIONS
Provides specifications of each model, which enables you to make a comparison of the different models.

CHAPTER 2: THEORY OF OPERATION
Gives an overview of the printing mechanisms as well as the sensors, actuators, and control electronics. It aids in understanding the basic principles of operations as well as locating defects for troubleshooting.

CHAPTER 3: ERROR INDICATION AND TROUBLESHOOTING
Details of error messages and codes that the incorporated self-diagnostic function of the machine will display if any error or malfunction occurs. If any error message appears, refer to this chapter to find which parts should be checked or replaced.
The latter half of this chapter provides sample problems that could occur in the main sections of the machine and related troubleshooting procedures.

CHAPTER 4: PERIODICAL MAINTENANCE
Details of consumable parts and periodical maintenance parts. This chapter also covers procedures for disassembling and assembling periodical maintenance parts.

CHAPTER 5: DISASSEMBLY/REASSEMBLY
Details of procedures for disassembling and assembling of the machine together with related notes. The disassembly order flow provided enables you to see at a glance the quickest way to get to parts involved.
At the start of a disassembly job, you can check the disassembly order flow that guides you through a shortcut to get to the object parts.
This chapter also covers screw tightening torques and lubrication points to which the specified lubrications should be applied during assembly jobs.

CHAPTER 6: ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT
Details of adjustments and updating of settings, which are required if the main PCB and some other parts have been replaced. This chapter also covers how to update the firmware.

CHAPTER 7: SERVICE FUNCTIONS
Describes the maintenance mode which is exclusively designed for the purpose of checking the settings and adjustments using the keys on the panel.
This chapter also covers hidden function menus, which activate settings and functions or
reset the parts life.

CHAPTER 8: CIRCUIT DIAGRAMS, WIRING DIAGRAM
Provides the Circuit Diagrams and Wiring diagram for the connections of the PCBs.

APPENDIX 1: WORKER SWITCH (WSW)

APPENDIX 2: DELETION OF USER SETTING INFORMATION, etc.
Provides instructions on how to delete such as user setting information recorded in the machine.

APPENDIX 3: SERIAL NUMBERING SYSTEM

APPENDIX 4: SCREW CATALOGUE

APPENDIX 5: REFERENCES

APPENDIX 6: GLOSSARY

Information in this manual is subject to change due to improvement or redesign of the product.
A thorough understanding of this machine, based on information in this service manual, is required for maintaining its print quality performance and for improving the practical ability to find the cause of problems.

PARTS MANUAL TABLE OF CONTENTS

1. FRAME L & DRIVE UNIT
2. FRAME UNIT
3. LASER UNIT
4. PAPER FEEDER
5. DUPLEX
6. PAPER TRAY
7. FUSER UNIT
8. COVERS
9. SCANNER
10. ADF 1
11. ADF 2
12. PANEL
13. PCB
14. ACCESSORIES
15. PRINTED MATERIALS
16. PACKING MATERIALS
17. OTHERS

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