5-13
Confidential
(3) Change the detecting conditions to check that the indication on the LCD changes
according to the sensor status. For instance, insert paper through the registration front/
rear sensor, open the front cover or the back cover, remove the toner cartridge, jam paper
at the paper outlet, insert paper from the manual feed slot, etc.
(4) Press the
Cancel
button to return to the printer to the initial state of the maintenance
mode.
■
Location of sensors
Fig. 5-5
LCD
Sensors
Sensing status
(OK/NG of temperature/humidity)
TMP
External temperature/humidity sensor
XX
°
C/NG
HUM
External temperature/humidity sensor
XX %/NG
MAC
Internal temperature sensor
XX
°
C/NG
BT
Belt temperature sensor
XX
°
C/NG
Note:
If the sensor detects the abnormal value, the printer displays “NG” on the LCD.
T1 registration
front/rear sensor
PCB ASSY
PF ASSY
T1 paper edge sensor
Drum position sensor PCB ASSY
Front cover sensor
Panel cable rack
Top drive ASSY
Develop release
sensor PCB ASSY
Registration front sensor
Registration rear sensor
External temperature/humidity
sensor
High-voltage power supply
PCB ASSY
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 ...