Brother HL-5240 Service Manual
Laser printer
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Also See for HL-5240:
- Service manual (337 pages) ,
- User manual (138 pages) ,
- Quick setup manual (23 pages)
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Summary of Contents for Brother HL-5240
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Page 1: Service Manual
Brother Laser Printer SERVICE MANUAL MODEL: HL-5240/5250DN/5270DN/5280DW Read this manual thoroughly before maintenance work. Keep this manual in a convenient place for quick and easy reference at all times. September 2005 SM-PRN057 (11) Confidential fineline6... - Page 2 (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-5240/5250DN/5270DN/5280DW printers. This manual consists of the following chapters:...
- Page 3 TABLE OF CONTENTS REGULATION .................... viii SAFETY INFORMATION ................x CHAPTER 1 GENERAL................1-1 FEATURES......................1-1 PARTS NAMES AND FUNCTIONS ................ 1-3 Overview........................... 1-3 Control Panel........................1-5 SPECIFICATIONS ....................1-7 Printing ..........................1-7 Functions .......................... 1-8 Electronics and Mechanics..................... 1-11 Service Information......................
- Page 4 HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL 2.3.9 Reset circuit ........................2-5 2.3.10 Panel I/O ..........................2-5 2.3.11 Video I/O ..........................2-5 2.3.12 Power supply........................2-5 2.3.13 Wireless LAN ........................2-5 Power Supply........................2-6 2.4.1 Low-voltage power supply....................2-6 2.4.2 High-voltage power supply ....................2-6 MECHANICS ......................2-7 Overview of Printing Mechanism ..................2-7 Overview of Gear......................
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Page 5: Chapter 4 Troubleshooting
PAPER PROBLEMS ..................... 4-15 Paper Loading Problems ....................4-15 Paper Jams ........................4-16 3.2.1 Paper jams and how to clear them for HL-5240/5250DN..........4-16 3.2.2 Paper jams and how to clear them for HL-5270DN/5280DW ..........4-18 3.2.3 Causes & countermeasures....................4-26 Paper Feeding Problems....................4-27 SOFTWARE SETTING PROBLEMS .............. - Page 6 7.24 New Toner Actuator......................5-41 7.25 Gear 17/20........................5-42 7.26 Side Cover R ........................5-44 7.27-1 Top Cover Printed ASSY (For HL-5240/5250DN) ............5-45 7.27-2 Panel PCB ASSY......................5-45 7.27-3 SW Key A/B ........................5-46 7.27-4 Inner Chute/Pinch Roller Holder ................... 5-47...
- Page 7 HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL 7.28-1 Top Cover 2 Printed ASSY/Panel Plate Printed ASSY (For HL-5270DN/5280DW) ... 5-48 7.28-2 Inner Chute/Pinch Roller Holder .................. 5-49 7.28-3 Panel PCB ASSY ......................5-50 7.28-4 SW Key A/B/C/ Set Key Printed ASSY ................ 5-51 7.28-5 LCD Holder ASSY......................5-53 7.29 Filter ..........................
- Page 8 CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT....6-1 IF YOU REPLACE THE MAIN PCB ................6-1 IF YOU REPLACE THE PERIODICAL MAINTENANCE PARTS ......6-10 CHAPTER 7 SERVICE SUPPORT SOFTWARE........7-1 CONTROL PANEL ....................7-1 Users Mode........................7-1 User Maintenance Mode....................7-3 Service Mode ........................
- Page 9 HL-5240/5250DN/5270DN/5280DW SERVICE MANUAL CHAPTER 4 TROUBLESHOOTING INTRODUCTION Initial Check (1) Operating environment Check if : • The source voltage stays within ±10% from the rated voltage shown on the rating plate. • The printer is installed on a solid, level surface.
- Page 10 CHAPTER 4 TROUBLESHOOTING (4) Others Condensation: When the printer is moved from a cold room into a warm room in cold weather, condensation may occur inside the printer, causing various problems as listed below: • Condensation on the optical surfaces such as the scanning mirror, lenses, the reflection mirror and the protection glass may cause the print image to be light.
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Page 11: Harness Routing
CHAPTER 5 DISASSEMBLY AND RE-ASSEMBLY HARNESS ROUTING MP PE sensor ASSY Hook "A" MP feed frame Printer top side (Printer body upside down) Hole Hook "B" Hook "A" MP PE sensor ASSY MP feed frame High-voltage PS PCB ASSY dential fineline6... - Page 12 BROTHER HL-5240 HL-5250DN HL-5270DN HL-5280DW service manual BROTHER HL-5240 HL-5250DN HL-5270DN HL-5280DW service manual BROTHER HL-5240 HL-5250DN HL-5270DN HL-5280DW service manual BROTHER HL-5240 HL-5250DN HL-5270DN HL-5280DW service manual BROTHER HL-5240 HL-5250DN HL-5270DN HL-5280DW service manual BROTHER HL-5240 HL-5250DN HL-5270DN HL-5280DW service manual...