Service manual
Table Of Contents
- HL-2140/2150N/2170W SERVICE MANUAL
- PREFACE
- TABLE OF CONTENTS
- REGULATION
- SAFETY INFORMATION
- CHAPTER 1 TROUBLESHOOTING
- CHAPTER 2 PERIODICAL MAINTENANCE
- CHAPTER 3 DISASSEMBLY AND ASSEMBLY
- 1. SAFETY PRECAUTIONS
- 2. PACKING
- 3. SCREW TORQUE LIST
- 4. LUBRICATION
- 5. OVERVIEW OF GEARS
- 6. HARNESS ROUTING
- 7. DISASSEMBLY FLOW
- 8. DISASSEMBLY PROCEDURE
- 8.1 PAPER TRAY UNIT / SEPARATION PAD ASSY
- 8.2 FRONT COVER ASSY / SW KEY
- 8.3 BACK COVER / OUTER CHUTE ASSY
- 8.4 FUSER COVER ASSY
- 8.5 INNER CHUTE ASSY
- 8.6 FUSER UNIT
- 8.7 SIDE COVER R ASSY
- 8.8 CORNER COVER
- 8.9 SIDE COVER L ASSY
- 8.10 ROLLER HOLDER ASSY
- 8.11 WIRELESS LAN PCB ASSY (only HL-2170W)
- 8.12 MAIN SHIELD COVER PLATE
- 8.13 MAIN PCB ASSY
- 8.14 TOP COVER ASSY
- 8.15 SW SUPPORTER
- 8.16 PANEL PCB ASSY
- 8.17 HIGH-VOLTAGE PS PCB ASSY
- 8.18 NEW TONER SENSOR HARNESS ASSY
- 8.19 FILTER ASSY
- 8.20 LASER UNIT
- 8.21 FAN MOTOR 60 UNIT / COVER SENSOR HARNESS ASSY / TONER LED PCB ASSY
- 8.22 LVPS
- 8.23 REGISTRATION FRONT SENSOR PCB ASSY
- 8.24 REGISTRATION REAR SENSOR PCB ASSY
- 8.25 DRIVE SUB ASSY
- 8.26 DEV JOINT / DEV GEAR JOINT/53R / REGISTRATION PENDULUM GEAR SPRING
- 8.27 TONER SENSOR PCB UNIT ASSY
- 8.28 REGISTRATION SOLENOID / T1 SOLENOID
- 8.29 MAIN SHIELD PLATE / EJECT SENSOR PCB ASSY
- 8.30 RUBBER FOOT
- 8.31 MAIN FRAME L ASSY
- CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS, REQUIRED AFTER PARTS REPLACEMENT
- CHAPTER 5 SERVICE SUPPORT SOFTWARE
- CHAPTER 6 CIRCUIT DIAGRAMS, WIRING DIAGRAM
- APPENDIX 1 SERIAL NUMBERING SYSTEM
- APPENDIX 2 SCREW CATALOGUE
- APPENDIX 3 DELETION OF PERSONAL INFORMATION
- APPENDIX 4 REFERENCES
- APPENDIX 5 GLOSSARY

1-19
Confidential
3.4 Dirt on Paper
3.5 Wrinkles or creases
3.6 Waves in the paper / folds in the paper at the eject roller 2
User Check
• Check if the paper is loaded into the paper tray correctly.
• Turn over the stack of paper in the paper tray, or try rotating the paper 180° in the paper
tray.
Step Cause Check
Result
Remedy
1
Fuser unit dirty Is there dirt around the
entrance of the fuser
unit?
Ye s
Clean the entrance of the
fuser unit.
Is the pressure roller
ASSY dirty?
Ye s
Clean the pressure roller
ASSY.
User Check
• Check if the paper is loaded into the paper tray correctly.
• Turn over the stack of paper in the paper tray, or try rotating the paper 180° in the paper
tray.
Step Cause Check
Result
Remedy
1
Fuser unit dirty Is there dirt around the
entrance of the fuser
unit?
Ye s
Clean the entrance of the
fuser unit.
2
Fuser unit failure Is the problem solved if
new fuser unit is
replaced?
Ye s
Replace the fuser unit.
User Check
• Check that the problem is solved if new paper is used.
Step Cause Check
Result
Remedy
1
Foreign object
around eject roller 2
Is there a foreign object
around the eject roller 2?
Ye s
Remove the foreign object.
2
Eject roller 2
failure
Is the problem solved
after replacing the new
eject roller 2?
Ye s
Replace the top cover
ASSY.