3-27
Confidential
■
HIGH-VOLTAGE POWER SUPPLY PCB FAILURE
■
FAN FAILURE
■
NO POWER SUPPLIED
■
PICKUP FUNCTION OF PAPER TRAY DOES NOT WORK
Step
Cause
Remedy
1
High-voltage power supply PCB
ASSY harness electrode dirty
Clean the electrodes on the High-voltage
power supply PCB ASSY harness.
2
High-voltage power supply PCB
ASSY harness connection failure
Check the harness connection between the
high-voltage power supply PCB and main
PCB. Then reconnect it.
3
High-voltage power supply PCB
failure
Replace the high-voltage power supply
PCB ASSY.
4
Low-voltage power supply PCB
failure
Replace the PS PCB unit.
5
Main PCB failure
Replace the main PCB ASSY.
Step
Cause
Remedy
1
Fan harness connection failure
Check the harness connection of the fan
motor 60 unit, and reconnect it.
2
Fan failure
Replace the fan motor 60 unit.
3
Toner LED PCB failure
Replace the toner LED PCB ASSY.
4
Main PCB failure
Replace the main PCB ASSY.
Step
Cause
Remedy
1
Harness connection failure of
panel PCB
Reconnect the panel PCB ASSY harness.
2
AC cord failure
Replace the AC cord.
3
Panel PCB failure
Replace the panel PCB ASSY.
4
LVPS PCB failure
Replace the PS PCB ASSY.
5
Main PCB ASSY failure
Replace the main PCB ASSY.
Step
Cause
Remedy
1
Link lever catching on some
position
Re-assemble the link lever.
2
Pickup roller holder ASSY
catching on some position
Re-assemble the pickup roller holder
ASSY catching on some position.
3
Roller holder ASSY failure
Replace the roller holder ASSY.
4
Main motor failure
Replace the main motor.
5
Pressure plate drive cam failure
Replace the pressure plate drive cam.
6
Main PCB ASSY failure
Replace the main PCB ASSY.
Summary of Contents for HL 5370DW
Page 12: ...CHAPTER 1 SPECIFICATIONS ...
Page 32: ...Confidential CHAPTER 2 THEORY OF OPERATION ...
Page 57: ...Confidential CHAPTER 3 ERROR INDICATION AND TROUBLESHOOTING ...
Page 109: ...Confidential CHAPTER 4 PERIODIC MAINTENANCE ...
Page 145: ...CHAPTER 5 DISASSEMBLY REASSEMBLY ...
Page 153: ...5 6 Confidential Fig 5 3 EM D110 4 places Separation pad ASSY ...
Page 154: ...5 7 Confidential 5 GEAR LAYOUT DRAWING Fig 5 4 ...
Page 213: ...5 66 Confidential 3 Remove the Gear 17 black Fig 5 86 4 Remove the Gear 17 white Fig 5 87 ...
Page 261: ...Confidential CHAPTER 6 ADJUSTMENTS AND UPDATING OF SETTINGS REQUIRED AFTER PARTS REPLACEMENT ...