Confidential
1-45
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.
Summary of Contents for DCP-9040CN
Page 309: ...Confidential 4 5 8 Alert warning message of WHQL appears Click Continue Anyway to proceed ...
Page 325: ...Confidential 5 6 Color scanning Fig 5 2 ...
Page 342: ...Confidential 5 23 Cover page sample Fig 5 13 End page sample Fig 5 14 ...
Page 365: ...Confidential 6 2 Charge High voltage Power Supply PCB Circuit Diagram 2 4 ...
Page 366: ...Confidential 6 3 Charge High voltage Power Supply PCB Circuit Diagram 3 4 ...
Page 367: ...Confidential 6 4 Charge High voltage Power Supply PCB Circuit Diagram 4 4 ...
Page 368: ...Confidential 6 5 Transfer High voltage Power Supply PCB Circuit Diagram 1 2 ...
Page 369: ...Confidential 6 6 Transfer High voltage Power Supply PCB Circuit Diagram 2 2 ...
Page 370: ...Confidential 6 7 Low voltage Power Supply PCB Circuit Diagram 100V ...
Page 371: ...Confidential 6 8 Low voltage Power Supply PCB Circuit Diagram 200V ...
Page 373: ...Confidential 6 10 Filter PCB Circuit Diagram ...