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Error code 0900
Detected irregular power supply for more than 100 times.
Error code 0A02
Detected a fan failure.
Step Cause Remedy
1
Low-voltage power supply PCB
failure
Replace the low-voltage power supply
PCB ASSY. Refer to “1.3.21 Reset
irregular power supply detection counter
of low-voltage power supply PCB
(Function code 88)” in Chapter 5 to reset
the irregular power supply detection
counter after the replacement.
2 Main PCB failure Replace the main PCB ASSY.
Note:
The irregular power supply detection error (Error code 0900) of the low-voltage power
supply PCB occurs when there is a large distortion in the power supply voltage supplied to
the machine. 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. For this reason, be sure
to ask the user to rearrange the installation environment.
Step Cause Remedy
1
Connection failure of the fan
harness
Reconnect the fan harness.
2
Connection failure of the high-
voltage power supply PCB
harness
Reconnect the high-voltage power supply
PCB harness.
3 Fan failure Replace the fan.
4
High-voltage power supply PCB
failure
Replace the high-voltage power supply
PCB ASSY.
5 Main PCB failure Replace the main PCB ASSY.
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