Brother HL-S7000DN - 4.7.5 Power supply PCB failure

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4.7.5 Power supply PCB failure
Step Cause Remedy
1 Harness connection failure of
power supply PCB
Check the harness connection of the power
supply PCB and reconnect the harness.
2 Power supply PCB failure Replace the power supply PCB ASSY.
3 Main PCB failure Replace the main PCB ASSY.