Pcb Problems; Main Pcb Failure; Out Of Memory; High Voltage Power Supply Pcb Assy Failure - Brother DCP-7055 Service Manual

3.13 PCB Problems

3.13.1 Main PCB failure

User Check
• Turn the power off and on.
Step
1 Main PCB failure

3.13.2 Out of Memory

Memory full
User Check
• Then print the stored data.
• Reduce the data capacity or reduce the print resolution.
Step
1 Main PCB failure

3.13.3 High voltage power supply PCB ASSY failure

Step
Harness connection failure of high
1 voltage power supply PCB ASSY
High voltage power supply PCB
2
ASSY failure
Low voltage power supply PCB
3
ASSY failure
4 Main PCB failure
Cause
Cause
Cause
2-102
Remedy
Replace the main PCB ASSY.
Remedy
Replace the main PCB ASSY.
Remedy
Check the harness connection between
the high voltage power supply PCB ASSY
and main PCB, and reconnect it.
Replace the high voltage power supply
PCB ASSY.
Replace the low voltage power supply
PCB ASSY.
Replace the main PCB ASSY.
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