brother hl 1040 free download

File name SM_HL820_HL1020_HL1040_HL1050.pdf

R LASER PRINTER SERVICE MANUAL MODEL:HL-820/1020/1040/1050 © Copyright Brother 1998 All rights reserved. No part of this publication may be reproduced in any form or by any means without permission in writing from the publisher. Specifications are subject to change without notice. Trademarks: The brother logo is a registered trademark of Brother Industries, Ltd. Apple, the Apple Logo, and Macintosh are trademarks, registered in the United States and other countries, and True Type is a trademark of Apple computer, Inc. Epson is a registered trademark and FX-80 and FX-850 are trademarks of Seiko Epson Corporation. Hewlett Packard is a registered trademark and HP Laser Jet is a trademark of Hewlett Packard Company. IBM, IBM PC and Proprinter are registered trademarks of International Business Machines Corporation. Microsoft and MS-DOS are registered trademarks of Microsoft Corporation. Windows is a registered trademark of Microsoft Corporation in the U.S. and other countries. PREFACE This service manual contains basic information required for after-sales service of the laser printer (here- in-after referred to as "this machine" or "the printer"). This information is vital to the service technician to maintain the high printing quality and performance of the printers. This service manual covers the HL-820, 1040, 1050 and 1070 laser printers. (Note that any figures for the printer body are based on the HL-1040 printer.) This manual consists of the following chapters: CHAPTER I : FEATURES AND SPECIFICATIONS Features, specifications, etc. CHAPTER II : THEORY OF OPERATION Basic operation of the mechanical system, the electrical system and the electrical circuits, and their timing information. CHAPTER III : DISASSEMBLY AND REASSEMBLY Procedures for disassembling and reassembling the mechanical system. CHAPTER IV : MAINTENANCE AND TROUBLESHOOTING Reference values and adjustments, troubleshooting image defects, troubleshooting malfunctions, etc. APPENDICES :SERIAL NO. DESCRIPTIONS, CONNECTION DIAGRAMS, PCB CIRCUIT DIAGRAMS. 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 print quality performance and for improving the practical ability to find the cause of problems. CONTENTS CHAPTER I FEATURES AND SPECIFICATIONS ...I-1 1. FEATURES ...I-1 2. SPECIFICATIONS ...I-3 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Printing...