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

5-2
Confidential
1.1 List of service support functions
Front
cover
Press the [Go] button
or SW supporter when
sifting the mode
Press the [Go] button
or SW supporter when
selecting the function
Function
Refer
to:
Close Once Once 1) Test Sample Page 5-4
Twice 2) Print Fonts 5-4
Three times 3) USB 2.0 FULL Serial
Number Return Value
Setting
5-4
Four times 4) Hex Dump Mode 5-4
Five times 5) PCB ONLY Mode 5-4
Six times 6) 1push Printing Recovery
Mode
5-4
Seven times 7) Network Reset 1 (APIPA:
ON)
5-4
Eight times 8) NV-RAM Factory Reset 5-4
More than nine
times
1) Test Sample Page
5-4
Open Once Once 9) Factory Inspection Mode 5-7
Twice 10) Continuous Grid Pattern
Print Mode
5-8
Three times 11) Fixing Unit Test Print 5-8
Four times 12) NV-RAM Value Dump Mode 5-8
Five times 13) RAM Check 5-8
Six times 14) QA Test print 5-8
Seven times 15) Paper Size Setting (A4/
Letter)
5-9
Twice Once 16) Printing for Maintenance 5-9
Twice 17) Printer Settings 5-11
Three times 18) Sleep Mode Indication
(OFF/Dimmed)
5-15
Four times 19) Sleep Mode Setting (ON/
OFF)
5-15
Five times 20) Developer Roller Counter
Reset1 (For the starter
toner cartridge)
5-15
Six times 21) Developer Roller Counter
Reset2 (For the standard
toner cartridge)
5-15
Seven times 22) Developer Roller Counter
Reset3 (For the high-
capacity toner cartridge)
5-15
More than 2 seconds (long push) PIT 3 Inspection Mode 5-6