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Brother HL-8050N Service Manual
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Brother HL-8050N Service Manual

Brother HL-8050N Service Manual

Brother hl-8050n laser printer service manual
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Download this manual See also: User Manual
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.
Sep. 2003
SM-PRN043
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Summary of Contents for Brother HL-8050N

  • Page 1 Read this manual thoroughly before maintenance work. Keep this manual in a convenient place for quick and easy reference at all times. Sep. 2003 SM-PRN043...
  • Page 2 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.
  • Page 3 (hereinafter 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 printer. This service manual covers the HL-8050N printers. This manual consists of the following chapters:...
  • Page 4 TABLE OF CONTENTS TABLE OF CONTENTS REGULATION.....................viii SAFETY INFORMATION................x CHAPTER 1 GENERAL ................1-1 FEATURES .......................1-1 OVERVIEW .......................1-3 SPECIFICATIONS.....................1-4 Printing ..........................1-4 Functions.......................... 1-5 Options..........................1-5 Electrical and Mechanical ....................1-6 Network ..........................1-7 Paper..........................1-8 3.6.1 Feedable paper ........................1-8 3.6.2 Print delivery ........................

  • Page 5: Chapter 3 Theory Of Operation

    HL-8050N SERVICE MANUAL CHAPTER 3 THEORY OF OPERATION ..........3-1 ELECTRONICS ......................3-1 General Block Diagram....................3-1 Main PCB ......................... 3-2 1.2.1 Outline..........................3-2 1.2.2 Circuit..........................3-4 MECHANICS ......................3-6 Summary of Print Process ....................3-6 Flow of Print Data......................3-9 Driving Force Transmission Path................... 3-10 2.3.1 Main Motor ........................
  • Page 6 TABLE OF CONTENTS 3.14 Fan Main ........................4-31 3.15 Chute Transfer ....................... 4-32 3.16 Lever Fuser LH/Lever Fuser RH..................4-33 3.17 150 Feeder ASSY ......................4-34 3.18 550 Feeder ASSY ......................4-41 3.19 Sensor Low Paper/Actuator/Plate CST Lock/Stopper Tray R/ Stopper Tray L ..... 4-46 3.20 Guide Tray Right ......................

  • Page 7: Chapter 6 Troubleshooting

    Hidden Function Menus Enabled by Pressing Switch (es) When Turning the Machine on ............................7-11 Parts life Reset Function....................7-11 HOW TO USE THE SELF-DIAGNOSTICS TOOLS ..........7-12 Troubleshooting for Printer won’t print................7-12 Diagnostics........................7-13 Printer Information ......................7-15 HOW TO REWRITE HL-8050N FLASH ROM ............7-16 NVRAM BACKUP ....................7-17...
  • Page 8 TABLE OF CONTENTS CHAPTER 8 PLUG/JACK(P/J) CONNECTOR LOCATIONS ....8-1 CONNECTOR [P(PLUG)/J(JACK)]................8-1 List of P/J ......................... 8-1 P/J Layout Diagram ......................8-3 APPENDIX CONNECTION WIRING DIAGRAM ................. A-1 Connection Wiring Diagram .....................A-1 1.1.1 Symbols in the General Connection Wiring Diagram ............A-1 1.1.2 General Wiring Diagram......................A-2 Interconnection Wiring Diagram of Parts .................A-3 1.2.1 Instructions for the Use of the Interconnection Wiring Diagram of Parts ......A-3...