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© 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
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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, 1020, 1040 and 1050 laser printers. (Note that any figures for the printer body are based on the HL-1040 printer.) This manual consists of the following chapters:
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CONTENTS CHAPTER I FEATURES AND SPECIFICATIONS..........................................I-1 1. FEATURES.........................................................................................................................I-1 2. SPECIFICATIONS ..............................................................................................................I-3 2.1 Printing................................................................................................................................
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2.3 Sensors...................................................................................................................................II-29 2.3.1 Cover Sensor.............................................................................................................II-29 2.3.2 Toner Empty Sensor..................................................................................................II-29 2.4 Drum Unit..............................................................................
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CHAPTER IV MAINTENANCE AND TROUBLESHOOTING..........................IV-1 1. INTRODUCTION ..............................................................................................................IV-1 1.1 Initial Check........................................................................................................................IV-1 1.2 Basic Procedure.................................................................................................................IV-2 2. CONSUMABLE PAR
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CHAPTER I FEATURES AND SPECIFICATIONS 1. FEATURES This printer has the following features: High Resolution and Fast Printing Speed True 600 dots per inch (dpi) with microfine toner and 8 pages per minute (ppm) printing speed (A4 or Letter paper). True 600 dots per inch (dpi) with microfine toner and 10 pages per minute (ppm) printing speed (A4 or Letter paper). True 600 dots per inch (dpi) and 1200 x 600 dpi for graphics with microfine toner and 10 pages pe
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Low Running Cost The toner cartridge is separate from the drum unit. You need to replace only the toner cartridge after around 2,400 pages, which is cost effective and ecologically friendly. The actual number of pages printed with each toner cartridge may vary depending on your average type of print job. Enhanced Memory Management The printer provides its own data compression technology in its printer hardware and the supplied printer driver software, which can automatically compress graphi
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2. SPECIFICATIONS 2.1 Printing Print method Electrophotography by semiconductor laser beam scanning Laser: Wave length: 780nm Output: 5mW max Resolution HL-820/1020: 600 x 600dots/inch (for Windows) HL-1040: 600 x 600dots/inch (for Windows or DOS) 300 x 300dots/inch (under Apple Macintosh, DOS, or other operating system) HL-1050: 1200(H) x 600(V)dots/inch (for Windows DIB graphics) 600 x 600dots/inch (for Windows or DOS) 300 x 300dpi (under Apple Macintosh using optional RS-100M) Print speed
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PR99017 Interface Bi-directional parallel Universal Serial Bus (USB) (HL-1050 only) RS-422A/RS-232C serial (RS-100M) is optionally available. (HL- 1040/1050 only) Memory HL-820/1020/1040: 2.0 Mbytes HL-1050: 4.0 Mbytes Expandable up to 36 Mbytes by installing an industry standard SIMM Control panel 1 switch and 4 lamps Diagnostics Self-diagnostic program 2.3 Electrical and Mechanical Power source U.S.A. and Canada: AC 110 to 120V, 50Hz/60Hz Europe and Australia: AC 220 to 240V, 50Hz/60Hz Power
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2.4 Paper Loading (1) Multi-purpose sheet feeder loading Paper size: A4, Letter, Legal, B5, A5, A6, and Executive. Other sizes of media that can be handled by the feed mechanism can be loaded. 69.8 to 229 mm 105 to 356mm (face down) Feeding direction 2 Feedable paper weight: 60 (16lb.) to 158 (42lb.) g/m 2 Maximum load height : 22mm (200 sheets of 80g/m paper) letter or A4 size Setting method: Pull the MP sheet feeder cover toward you, insert the stack of paper into the feeder, aligning the t
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PR98184 2.6 Paper (1) Paper type 2 (a) Normal paper (60 to 157g/m , specified types of high-quality paper) A4 size Letter size Legal size B5 (JIS ISO) size A5 size A6 size Executive size * The recommended types of plain paper are as follows: 2 Letter : Xerox 4200 (75g/m ) 2 A4 : Xerox 80 Premier Paper (80g/m ) (b) Special paper (specified types) Labels Envelopes (DL, C4, C5, COM10, Monarch) Organizers (K, L, and J sizes of DAY-TIMERS) (C) Other detailed specific
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2.7 Effective Printing Area Printable area A F E CE B D F The effective printing area means the area within which the printing of all the data received without any omissions can be guaranteed. I-7
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PR98184 The table below shows the effective printing areas. Size A B C D E F 210.0mm 297.0mm 203.2mm 288.5mm 3.4mm 4.23mm A 4 8.27” 11.69” 8.0” 11.36” 0.13” 0.17” (2,480 dots) (3,507 dots) (2,400 dots) (3,407 dots) (40 dots) (50 dots) 215.9mm 279.4mm 203.2mm 270.9mm 6.35mm Letter 8.5” 11.0” 8.0” 10.67” 0.25” (2,550 dots) (3,300 dots) (2,400 dots) (3,200 dots) (75 dots) 215.9mm 355.6mm 203.2mm 347.1mm Legal 8.5” 14.0” 8.0” 13.67” (2,550 dots) (4,200 dots) (2,400 dots) (4,100 dots) 182.0mm 25
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3. SAFETY INFORMATION 3.1 Laser Safety (110 - 120V Model only) This printer is certified as a Class 1 laser product under the US Department of Health and Human Services (DHHS) Radiation Performance Standard according to the Radiation Control for Health and Safety Act of 1968. This means that the printer does not produce hazardous laser radiation. Since radiation emitted inside the printer is completely confined within the protective housings and external covers, the laser beam cannot escape
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3.3 Caution for Laser Product (Warnhinweis für Laserdrucker) CAUTION: When the machine during servicing is operated with the cover open, the regulations of VBG 93 and the performance instructions for VBG 93 are valid. CAUTION: In case of any trouble with the laser unit, replace the laser unit itself. To prevent direct exposure to the laser beam, do not try to open the enclosure of the laser unit. ACHTUNG: Im Falle von Störungen der Lasereinheit muß diese ersetzt werden. Das Gehäuse der Laser
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CHAPTER II THEORY OF OPERATION 1. ELECTRONICS 1.1 General Block Diagram HL-820/1020 Fig. 2-1 shows a general block diagram of the HL-820/1020 printer. Control system Interface block Video control block Engine control block Operation block (Operation panel) Erase lamp Paper tray unit Drive block Laser scanner unit (Stepping motor) Paper tray Manual feed Drum unit Transfer block Fixing unit Cleaner Developing Drum block block Charging Paper eject block block Paper feed system Toner
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HL-1040 Fig. 2-2 shows a general block diagram of the HL-1040 printer. Optional I/F board (Mac. RS-232C) Control system Expansion I/O Interface block Video control block Engine control block Operation block (Operation panel) Erase lamp Paper tray unit Drive block Laser scanner unit (Stepping motor) Paper tray Manual feed Drum unit Transfer block Fixing unit Cleaner Developing Drum block block Charging Paper eject block block Paper feed system Toner cartridge Image generation syste
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HL-1050 Fig. 2-3 shows a general block diagram of the HL-1050 printer. Optional RAM (SIMM) Optional I/F board (max. 32Mbytes) (Mac. RS-232C) Control system Expansion memory I/O Expansion I/O Interface block Video control block Engine control block Operation block (Operation panel) Erase lamp Paper tray unit Drive block Laser scanner unit (Stepping motor) Paper tray Manual feed Drum unit Transfer block Fixing unit Cleaner Developing Drum block block Charging Paper eject block b
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1.2 Main PCB Block Diagram HL-820/1020 Fig. 2-4 shows the block diagram of the main PCB. A S I C CPU Core (MC68EC000) Reset Circuit Oscillator (15.3MHz) BUS INT Address Decoder DRAM Control Program + Font ROM 512 Kbytes Timer RAM (2.0 Mbytes) FIFO DATA EXTENSION To PC CDCC Parallel I/O Soft Support EEPROM (128 8 bits) EEPROM I/O Motor Driver Engine Control I/O To Panel Sensor PCB Fig. 2-4 II-4
