Confidential
1-47
Faulty registration
Step Cause
Check Result Remedy
1 Registration rear
actuator operating
smoothly or is it
catching.
Does the registration rear
actuator move smoothly?
No Re-assemble the
registration rear actuator.
2 Engine PCB
failure
Is the problem solved after
replacing the engine PCB
ASSY?
Yes Replace the engine PCB
ASSY.
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
Check Result Remedy
1 Corona wire
conduction failure
Are the electrodes on the
drum unit and machine
body dirty?
Yes Clean both electrodes.
2 Dirt on belt unit
electrode
Are the electrodes on the
belt unit and machine
body dirty?
Yes Clean both electrodes.
3 Transfer HVPS
PCB failure
Is the problem solved
after replacing the transfer
HVPS PCB ASSY?
Yes Replace the transfer
HVPS PCB ASSY.
4 Charge HVPS
PCB failure
Is the problem solved
after replacing the charge
HVPS PCB ASSY?
Yes Replace the charge
HVPS PCB ASSY.
5 Engine PCB
failure
Is the harness connected
between the HVPS PCB
and engine PCB
correctly?
Yes Replace the engine PCB
ASSY.
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