PREFACE; PREFACE ; HOW THIS MANUAL IS ORGANIZED - Page 3

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Confidential

PREFACE 

This Service Manual is intended for use by service personnel and details the specifications,  
construction, theory of operation, and maintenance for the Brother machines noted on the front  
cover.  It includes information required for troubleshooting and service--disassembly, reassembly,  
and lubrication--so that service personnel will be able to understand equipment function, repair the  
equipment in a timely manner and order spare parts as necessary. 

To perform appropriate maintenance so that the machine is always in the best possible condition  
for the customer, service personnel must adequately understand and apply this manual. 

HOW THIS MANUAL IS ORGANIZED 

This manual is made up of nine chapters and appendices. 

CHAPTER 1  PARTS NAMES AND FUNCTIONS 

Contains external views and names of components and describes their functions.  Information  
about the keys on the control panel is included to help you check operation or make adjustments. 

CHAPTER 2  SPECIFICATIONS 

Lists the specifications of each model, which enables you to make a comparison of different  
models. 

CHAPTER 3  THEORY OF OPERATION 

Gives an overview of the scanning and printing mechanisms as well as the sensors, actuators, and  
control electronics.  It aids in understanding the basic principles of operation as well as locating  
defects for troubleshooting. 

CHAPTER 4  TRANSFER OF DATA LEFT IN THE MACHINE TO BE SENT FOR REPAIR 

Describes how to transfer data left in the machine to be sent for repair.  The service personnel  
should instruct end users to follow the transfer procedure given in this chapter if the machine at the  
user site cannot print received data due to the printing mechanism defective.  End users can  
transfer received data to another machine to prevent data loss. 

CHAPTER 5  DISASSEMBLY/REASSEMBLY AND LUBRICATION 

Details procedures for disassembling and reassembling the machine together with related notes.  
The disassembly order flow provided enables you to see at a glance the quickest way to get to  
component(s) involved. 
At the start of a disassembly job, you check a disassembly order flow that guides you through a  
shortcut to the object components. 
This chapter also covers screw tightening torques and lubrication points to which the specified  
lubricants should be applied during reassembly jobs. 

CHAPTER 6  ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS 

REPLACEMENT

Details adjustments and updating of settings, which are required if the head/carriage unit, main  
PCB and some other parts have been replaced. 

CHAPTER 7  CLEANING 

Provides cleaning procedures not covered by the User's Manual.  Before starting any repair work,  
clean the machine as it may solve the problem concerned.