Brother HLL3290CDW Service Manual page 101

■
Error code 0900
Detected irregular power supply for more than 100 times.
<User Check>
• Turn OFF the power switch. After several seconds, turn ON the power again and check that
this error is reset.
Step
Low-voltage power supply PCB
failure
1
2 Main PCB failure
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 is replaced. For this reason, be sure to ask
the user to rearrange the installation environment.
■
Error code 0A02
Main PCB detected the fan failure.
Step
Connection failure of the fan
1
harness
Connection failure of the high-
2
voltage power supply flat cable
3 Fan failure
High-voltage power supply PCB
4
failure
5 Main PCB failure
Cause
Cause
2-65
Remedy
Replace the low-voltage power supply
PCB. Refer to "1.3.36 Reset counters for
consumable parts (Function code 88)" in
Chapter 5 to reset the irregular power
supply detection counter after the
replacement.
Replace the main PCB.
Remedy
Reconnect the fan harness.
Reconnect the high-voltage power supply
flat cable.
Replace the fan.
Replace the high-voltage power supply
PCB.
Replace the main PCB.
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