Brother HL-4070CDW Panduan Servis - Halaman 2

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

printer (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 HL-4040CN/4040CDN/4050CDN/4070CDW machines.

This manual consists of the following chapters:

CHAPTER 1: 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 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 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 4: 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 5: 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 6: CIRCUIT DIAGRAMS, WIRING DIAGRAM

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

PREFACE

Confidential