Faulty Registration - Brother DCP-9045CDN Service Manual

Faulty registration

Step Cause
1 Registration rear
actuator operating
smoothly or is it
catching.
2 Engine PCB
failure
Dark
User Check
- Check the machine's environment. High temperature and high humidity
conditions can cause this problem.
- Replace the toner cartridge or drum unit with a new one.
- Implement calibration from the control panel.
Step Cause
1 Corona wire
conduction failure
2 Dirt on belt unit
electrode
3 Transfer HVPS
PCB failure
4 Charge HVPS
PCB failure
5 Engine PCB
failure
Check
Does the registration rear
actuator move smoothly?
Is the problem solved after
replacing the engine PCB
ASSY?
Check
Are the electrodes on the
drum unit and machine
body dirty?
Are the electrodes on the
belt unit and machine
body dirty?
Is the problem solved
after replacing the transfer
HVPS PCB ASSY?
Is the problem solved
after replacing the charge
HVPS PCB ASSY?
Is the harness connected
between the HVPS PCB
and engine PCB
correctly?
1-47
Remedy
Result
No Re-assemble the
registration rear actuator.
Yes Replace the engine PCB
ASSY.
Remedy
Result
Yes Clean both electrodes.
Yes Clean both electrodes.
Yes Replace the transfer
HVPS PCB ASSY.
Yes Replace the charge
HVPS PCB ASSY.
Yes Replace the engine PCB
ASSY.
Confidential