2-8
Confidential
2.4 Block Diagram
Fig. 2-4
Engine PCB
Front cover sensor
Develop drive motor
PF drive motor
Drum drive motor
Develop release motor
T1 paper pick-up solenoid
MP paper pick-up solenoid
Registration solenoid
Mono solenoid
Paper eject motor
Waste toner sensor
Fuser fan
Power fan
Back cover sensor
Paper eject unit
EL emission circuit
Toner sensor
(emission)
External temperature/
humidity sensor
CPU
High-voltage
power supply PCB
Toner/New sensor PCB
Drum position sensor PCB
Develop release sensor PCB
T1 registration front/rear sensor PCB
MP paper empty/registration front sensor PCB
T1 paper edge sensor PCB
Belt unit temperature sensor
Back light module
LCD
Panel PCB
Registration mark R PCB
Registration mark L PCB
Wireless LAN PCB
USB host relay PCB
Internal temperature sensor
Center thermistor
Paper eject
sensor PCB
Side thermistor
Low-voltage power supply PCB
T2 sensor PCB
T2 Relay
PCB ASSY
T2 registration sensor PCB
Polygon motor
LD PCB
Plate motor
T2 solenoid
Paper tray 2
Laser unit
Fuser unit
Main PCB
Shutter solenoid
Blower
Summary of Contents for HL-4140CN
Page 19: ...Confidential CHAPTER 1 SPECIFICATIONS ...
Page 29: ...Confidential CHAPTER 2 ERROR INDICATION AND TROUBLESHOOTING ...
Page 145: ...Confidential CHAPTER 3 DISASSEMBLY AND ASSEMBLY ...
Page 169: ...3 21 Confidential 8 DISASSEMBLY FLOW Disassembly Re Assembly second ...
Page 296: ...Confidential CHAPTER 4 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...
Page 311: ...Confidential CHAPTER 5 SERVICE FUNCTIONS ...
Page 336: ...5 23 Confidential Inter color position alignment adjustment chart Fig 5 8 ...
Page 343: ...5 30 Confidential Fig 5 11 ...
Page 345: ...5 32 Confidential Fig 5 12 First side Second side ...
Page 347: ...5 34 Confidential Color test pattern Fig 5 13 MCYK Y C K M YCMK_ _A ...
Page 354: ...5 41 Confidential Maintenance information Fig 5 14 ...
Page 382: ...Confidential CHAPTER 6 CIRCUIT DIAGRAMS WIRING DIAGRAM ...
Page 384: ...6 1 Confidential 1 CIRCUIT DIAGRAMS High voltage Power Supply PCB Circuit Diagram 1 3 ...
Page 385: ...6 2 Confidential High voltage Power Supply PCB Circuit Diagram 2 3 ...
Page 386: ...6 3 Confidential High voltage Power Supply PCB Circuit Diagram 3 3 ...
Page 387: ...6 4 Confidential Low voltage Power Supply PCB Circuit Diagram 100V ...
Page 388: ...6 5 Confidential Low voltage Power Supply PCB Circuit Diagram 200V ...
Page 389: ...6 6 Confidential 2 WIRING DIAGRAM Wiring Diagram ...
Page 390: ...Confidential CHAPTER 7 PERIODICAL MAINTENANCE ...
Page 424: ...Confidential APPENDIX 1 SERIAL NUMBERING SYSTEM ...
Page 428: ...Confidential APPENDIX 3 INSTALLING THE MAINTENANCE DRIVER ...
Page 432: ...App 3 4 Confidential 10 Alert warning message appears click Continue Anyway to proceed ...