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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 

Summary of Contents for HL-8050N

Page 1: ... r S SE ER RV VI IC CE E M MA AN NU UA AL L M M MO O OD D DE E EL L L H H HL L L 8 8 80 0 05 5 50 0 0N N N 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: ...ks 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...

Page 3: ... DISASSEMBLY AND RE ASSEMBLY Procedures for disassembling and re assembling the mechanical system CHAPTER 5 MAINTENANCE Periodical replacements parts consumable parts etc CHAPTER 6 TROUBLESHOOTING Reference values and adjustments troubleshooting image defects troubleshooting malfunctions etc CHAPTER 7 SERVICE MODE Professional Menu mode and Service Menu mode etc APPENDIX Serial No descriptions pag...

Page 4: ...ASIC OPERATION 2 1 1 TO USE THE PRINTER SAFETY 2 1 1 1 Installing and Relocating your Printer 2 1 1 2 Precautions for Power and Ground Earthed Connections 2 3 1 3 Operating Precautions 2 4 1 4 Notes on Handling Consumables 2 5 2 CARTON COMPONENTS 2 7 3 CONTROL PANEL 2 8 3 1 Data LED Indications 2 8 3 2 Liquid Crystal Display LCD 2 9 3 3 Panel Buttons Functions 2 10 4 SETTING UP YOUR PRINTER 2 11 4...

Page 5: ...er 3 20 2 5 3 Engine 3 22 2 5 4 Fuser 3 25 2 5 5 500 Paper Exit Option Face Up Tray 3 27 2 5 6 Drive 3 28 2 5 7 Electrical 3 29 2 6 Control 3 31 2 6 1 Control of Paper Size 3 31 2 6 2 ROS Control 3 31 2 6 3 Fuser Control 3 32 2 7 Schematic Diagrams of Safety System 3 33 CHAPTER 4 DISASSEMBLY AND RE ASSEMBLY 4 1 1 SAFETY PRECAUTIONS 4 1 2 DISASSEMBLY FLOW 4 2 3 DISASSEMBLY PROCEDURE 4 3 3 1 Drum Un...

Page 6: ... Motor 4 58 3 33 LVPS 4 59 3 34 HVPS MCU FFC ASSY ESS 4 60 3 35 PWBA ESS 4 61 4 PACKING 4 62 5 GUIDELINES FOR LEAD FREE SOLDER 4 63 6 HARNESS ROUTING 4 66 CHAPTER 5 PERIODIC MAINTENANCE 5 1 1 REPALACING THE TONER CARTRIDGE TN 1700 5 1 1 1 Toner Cartridge Handling Precautions 5 1 1 2 Replacing the Toner Cartridge 5 2 2 REPALACING THE FUSER UNIT TRANSFER ROLL CARTRIDGE FP 8000 5 4 2 1 Fuser Unit Tra...

Page 7: ...mage Quality FIP 6 46 6 JUDGEMENT OF PRINT CONSISTENCY 6 65 7 PREVENTIVE MAIN MAINTENANCE 6 70 CHAPTER 7 SERVICE MODE 7 1 1 ENTERING HIDDEN FUNCTION MENU MODES 7 1 2 PROFESSIONAL MENU MODE 7 2 2 1 Enabling and Disabling Professional Menu Mode 7 2 2 2 Function Table 7 3 3 SERVICE MENU MODE 7 8 3 1 Entering the Service Menu Mode 7 8 3 2 Function Table 7 8 4 OTHER HIDDEN FUNCTION MENUS 7 11 4 1 Hidde...

Page 8: ...ection Wiring Diagram A 1 1 1 2 General Wiring Diagram A 2 1 2 Interconnection Wiring Diagram of Parts A 3 1 2 1 Instructions for the Use of the Interconnection Wiring Diagram of Parts A 3 1 2 2 Configuration of the Interconnection Wiring Diagram of Parts A 4 2 HOW TO KNOW PAGE COUNTER PARTS LIFE A 13 1 1 Printing Out of the Print Configuration Page A 13 1 2 How to Read the Page Counter the Parts ...

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