Brother HL-1112 - High Voltage Power Supply PCB Failure; Main PCB Failure

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Confidential
4.7.9 High voltage power supply PCB failure
4.7.10 Main PCB failure
Step Cause Remedy
1 Connection failure of electrodes Clean and reattach each electrode.
2
Connection failure of the high
voltage PCB flat cable
Reconnect the high voltage PCB flat cable.
3
High voltage power supply PCB
failure
Replace the high voltage power supply PCB
ASSY.
4 Main PCB failure Replace the main PCB ASSY.
<User Check>
- Turn the power switch OFF and then back ON again.
Step Cause Remedy
1 Firmware malfunction Install the latest firmware.
2 Main PCB failure Replace the main PCB ASSY.