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Confidential
4.8.5 Low voltage power supply PCB ASSY failure
4.9
Other Problems
4.9.1 The printer is not turned on, or the LED indication does not appear.
4.9.2 The Fan motor 60 ASSY does not rotate.
User Check
• Turn the power off and on.
Step
Cause
Remedy
1
Harness connection failure of low
voltage power supply PCB ASSY
Check the harness connection of the low
voltage power supply PCB ASSY, and
reconnect it.
2
Low voltage power supply PCB
failure
Replace the low voltage power supply
PCB ASSY. However, in the case of the
irregular power supply detection error,
reset the irregular power supply detection
counter following the procedure described
"3.1 Reset of Irregular Power Supply
3
Main PCB failure
Replace the main PCB ASSY.
CAUTION :
• The irregular power supply detection error (After blinking the Toner/Drum/Error/Ready
LED, the Toner/Drum/Error LED light up by pressing the [Go] button once. ) occurs
when there is a large fluctuation in the power supply voltage supplied to the printer.
In this case, if the same power supply is used, the same error might occur again even
if the low voltage power supply PCB ASSY is replaced.
User Check
• Replace the AC power cord.
Step
Cause
Remedy
1
Harness connection failure of panel
PCB ASSY
Reconnect the harness of the panel PCB
ASSY correctly.
2
Panel PCB failure
Replace the panel PCB ASSY.
3
Low voltage power supply PCB
ASSY failure
Replace the low voltage power supply
PCB ASSY.
4
Main PCB failure
Replace the main PCB ASSY.
Step
Cause
Remedy
1
Harness connection failure of the
fan motor 60 ASSY
Reconnect the harness of the fan motor
60 ASSY correctly.
2
Fan motor 60 ASSY failure
Replace the fan motor 60 ASSY.
3
Harness connection failure of high
voltage power supply PCB
Reconnect the harness of the high
voltage power supply PCB ASSY.
4
High voltage power supply PCB
ASSY failure
Replace the high voltage power supply
PCB ASSY.
5
Main PCB failure
Replace the main PCB ASSY.