Brother HL-4040CN Service Manual
Brother color laser printer
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Also See for HL-4040CN:
- Service manual (341 pages) ,
- User manual (202 pages) ,
- Network user's manual (158 pages)
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Summary of Contents for Brother HL-4040CN
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Page 1: Service Manual
Brother Color Laser Printer SERVICE MANUAL MODEL: HL-4040CN/4050CDN/4070CDW Read this manual thoroughly before maintenance work. Keep this manual in a convenient place for quick and easy reference at all times. February 2007 SM-PRN061 Confidential... - Page 2 (hereinafter referred to as "the machine"). This information is vital to the service personnel to maintain the high printing quality and performance of the machine. This service manual covers the HL-4040CN/4040CDN/4050CDN/4070CDW machines. This manual consists of the following chapters:...
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Page 3: Toner Cartridge
APPENDIX 1: WORKER SWITCH (WSW) Describes the functions of the worker switches, which can be divided into two groups: one is for customizing preferences designed for the destination and the other is for modifying preferences that match the machine to the environmental conditions. Use the latter group if the machine malfunctions due to mismatching. - Page 4 TABLE OF CONTENTS REGULATION.................... VIII SAFETY INFORMATION................XII CHAPTER 1 TROUBLESHOOTING ............1-1 1. INTRODUCTION ......................1-1 1.1 Precautions ........................1-1 1.2 Initial Check........................1-1 2. ERROR CODES ......................1-3 2.1 Error Indication ........................1-3 2.2 Error Cause and Remedy ....................1-5 2.2.1 Recoverable Error by User Check ................
- Page 5 CHAPTER 3 DISASSEMBLY AND ASSEMBLY........3-1 1. SAFETY PRECAUTIONS....................3-1 2. PACKING ........................3-2 3. SCREW TORQUE LIST ....................3-3 4. LUBRICATION ......................3-6 5. OVERVIEW OF GEARS....................3-12 6. HARNESS ROUTING....................3-17 7. DISASSEMBLY FLOW ....................3-24 8. DISASSEMBLY PROCEDURE .................3-25 8.1 AC Cord..........................3-25 8.2 Toner Cartridge ........................ 3-25 8.3 Drum Unit .........................
- Page 6 8.28 Front Door Sub....................... 3-75 8.29 EL Electrode Spring L/R....................3-76 8.30 Hook Cover/ Front Cover Release Button/ Button Spring/ Front Door Main ....3-77 8.31 Hook Shaft/ Hook/ Hook Spring ..................3-79 8.32 Engine PCB ASSY ......................3-80 8.33 Main PCB ASSY/ Ground Plate/ Ground Spring Plate ..........3-81 8.34 Waste Toner Near/Full Sensor ASSY................
- Page 7 9. DISASSEMBLY PROCEDURE (LT-100CL) (HL-4050CDN/ 4070CDW ONLY)..3-134 9.1 LT Paper Tray ........................ 3-134 9.2 LT Cover Rear........................ 3-138 9.3 LT Cover Left........................3-139 9.4 LT Cover Right ....................... 3-140 9.5 LT Relay PCB ASSY ...................... 3-141 9.6 LT Solenoid ASSY......................3-142 9.7 Collar 6 ...........................
- Page 8 1.4.15 Sensitivity Adjustment of Registration-mark Sensor (Function code 75) .... 5-19 1.4.16 Operational Check of Fans (Function code 78)........... 5-21 1.4.17 Display of the Machine’s Log (Function code 80)..........5-23 1.4.18 Error Code Indication (Function code 82)............5-26 1.4.19 Developing Bias Voltage Correction (Function code 83)........5-26 1.4.20 Exit from the Maintenance Mode (Function code 99)..........
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Page 9: Chapter 1 Troubleshooting
CHAPTER 1 TROUBLESHOOTING INTRODUCTION Troubleshooting is the countermeasure procedures that the service personnel should follow if an error or malfunction occurs with the machine. It is impossible to anticipate all of the possible troubles which may occur in future and determine the troubleshooting procedures, so this chapter covers some sample troubles. -
Page 10: Roller Holder Assy
(5) Assemble the MP lift arm 2 with aligning it with the three Bosses provided on the Front door unit ASSY. Note: When assembling the MP lift arm 2, make sure that the shaft of the MP roller holder ASSY is put into the hole on the MP lift arm 2. -
Page 11: Parts Life Reset Function
Parts Life Reset Function This function is provided for service personnel in order to reset the counter of each periodical replacement part and count the number of replacement times when replacing the periodical replacement parts. Pressing the two buttons in the normal status Panel Operation Function Go &... -
Page 12: Chapter 3 Disassembly And Assembly
CHAPTER 3 DISASSEMBLY AND ASSEMBLY SAFETY PRECAUTIONS To avoid creating secondary problems by mishandling, follow the warnings and precautions below during maintenance work. HOT SURFACE Some parts inside the machine are extremely hot immediately after the machine is used. When opening the front cover or back cover to access any parts inside the machine, never touch the shaded parts shown in the following figures.