Color Misregistration - Brother HL-3040CN Service Manual

■ Ghost
<User Check>
- Check the machine's environment, conditions such as high humidity may
- Check that the appropriate media type is selected in the printer driver.
- Replace the drum unit with a new one.
Step Cause
1 HVPS control PCB
failure
2 High-voltage power
supply PCB failure
3 Engine PCB failure

■ Color misregistration

<User Check>
- Implement the adjustment of color registration from the control panel
- Replace the belt unit with a new one.
- Replace the drum unit with a new one.
Step Cause
1 Engine PCB failure
2 Registration mark L
PCB ASSY failure
cause this situation to occur.
Is the problem solved
after replacing the HVPS
control PCB ASSY?
Is the problem solved
after replacing the
high-voltage power
supply PCB ASSY?
Is the problem solved
after replacing the
engine PCB ASSY?
cover ASSY.
Is the problem solved
after replacing the
engine PCB ASSY?
Is the problem solved
after replacing the
registration sensor
holder ASSY?
3-77
Check
Result
Yes
Yes
Yes
Check
Result
Yes
Yes
Remedy
Replace the HVPS
control PCB ASSY.
Replace the
high-voltage power
supply PCB ASSY.
Replace the engine
PCB ASSY.
Remedy
Replace the engine
PCB ASSY.
Replace the
registration sensor
holder ASSY.
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