Brother HL-1260 service manual Preface

PREFACE

This service manual contains basic information required for after-sales service of the laser printer (hereinafter referred to as ”this machine” or ” the printer”). This information is vital to the service technician in maintaining the high printing quality and performance of the printer.

This manual consists of the following chapters:

Chapter I	:	General
		Features, specifications, etc.
Chapter II	:	Theory of Operation
		Basic operation of the mechanical system and the electrical system, and their timing.
Chapter III	:	Electrical System
		Theory of the electronics circuit
Chapter IV	:	Mechanical System
		Requirements for a suitable location, disassembling and reassembling procedure of
		mechanical system.
Chapter V	:	Maintenance and Servicing
		Parts replacement schedule, list of tools, lubricants and cleaners.
Chapter VI	:	Troubleshooting
		Reference values and adjustment, troubleshooting for image defects, troubleshooting
		for malfunctions, etc.
Appendices :		Engine Block Diagram, PCB Circuitry Diagrams, etc.

Information in this manual is subject to change due to improvement or re-design of the product. All relevant information in such cases will be supplied in service information bulletins (Technical Information).

A thorough understanding of this printer, based on information in this service manual and service information bulletins, is required for maintaining its quality performance and for fostering the practical ability to find the cause of troubles.