Brother DCP-L5500D Service Manual page 77

 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 of the low-voltage power supply PCB (error
code: 0900) 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
may occur even when the low-voltage power supply PCB ASSY is replaced. Ask the
user to review the installation environment.
• Do not reset the power supply PCB counter before replacing it with a new one. It may
cause fire.
 Error code 0A02
Detected a main fan failure.
Step
Connection failure of the main fan
1
harness
Connection failure of the toner
2 amount detection sensor PCB
harness (light emission)
3 Main fan failure
Low-voltage power supply PCB
4
failure
Toner amount detection sensor
5
PCB (light emission) failure
6 Main PCB failure
 Error code 0B01
An error occurred in the high-voltage power supply PCB ASSY while operating.
Error code 0B02
An error occurred in the high-voltage power supply PCB ASSY when the machine was in the
ready state.
<User Check>
• Replace the drum unit. (corona wire breakage)
Step
Connection failure of the HVPS
1
flat cable
2 High-voltage power supply PCB failure Replace the high-voltage power supply PCB ASSY.
3 Main PCB failure
Cause
Replace the low-voltage power supply PCB
ASSY. Refer to
consumable parts (function code: 88)" in
Chapter 5
detection counter after the replacement.
Replace the main PCB ASSY.
Cause
Reconnect the main fan harness.
Reconnect the toner amount detection sensor
PCB harness (light emission).
Replace the main fan.
Replace the low-voltage power supply PCB
ASSY.
Replace the toner amount detection sensor
PCB ASSY (light emission).
Replace the main PCB ASSY.
Cause
Reconnect the HVPS flat cable.
Replace the main PCB ASSY.
2-42
Remedy
"1.3.31 Reset counters for
to reset the irregular power supply
Remedy
Remedy
Confidential