Brother MFC-9840CDW Manuel d'entretien - Page 3

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This service manual contains basic information required for after-sales service of the color

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-9045CDN/MFC-9840CDW machines.

This manual consists of the following chapters:

CHAPTER 1: TROUBLESHOOTING

Details of error messages and codes that the incorporated self-diagnostic functions 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 2: PERIODICAL MAINTENANCE

Details of consumable parts and periodical maintenance parts. This chapter also covers

procedures for disassembling and assembling periodical maintenance parts.

CHAPTER 3: DISASSEMBLY AND ASSEMBLY

Details of procedures for disassembling and assembling 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 of the machine.

CHAPTER 4: ADJUSTMENTS AND UPDATING OF SETTINGS,

REQUIRED AFTER PARTS REPLACEMENT

Details of adjustments and updates of settings, which are required if the main PCB and

some other parts of the machine have been replaced. This chapter also covers how to

update the firmware.

CHAPTER 5: SERVICE FUNCTIONS

Describes the maintenance mode which is exclusively designed for the purpose of checking

the settings and making any adjustments using the control panel.

This chapter also covers hidden function menus, which activate settings and functions or

reset the parts life.

CHAPTER 6: CIRCUIT DIAGRAMS, WIRING DIAGRAM

Provides Circuit Diagrams and Wiring Diagrams for the connections of the PCBs.

PREFACE

Confidential