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Poor fixing

Step
Cause
Low pressure of
1
pressure roller in
the fuser unit
Fuser unit failure
2
Toner sensor
failure
3
HVPS PCB
4
failure
Main PCB failure Is the problem solved
5
LVPS PCB
6
failure
<User Check>
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Check
Is the problem solved by
changing the position of
the anti-curl lever ?
Is the problem solved
after replacing the fuser
unit?
Is the Toner life End
message indicated on
the LED after replacing
the current toner
cartridge with an empty
one?
Is the problem solved
after replacing the
HVPS PCB ASSY?
after replacing the main
PCB ASSY?
Is the problem solved
after replacing the LVPS
PCB unit?
3-35
Result
Remedy
Change the position of the
Yes
anti-curl lever.
Replace the fuser unit.
Yes
Replace the toner sensor.
No
Replace the HVPS PCB
Yes
ASSY.
Replace the main PCB
Yes
ASSY.
Replace the LVPS PCB
Yes
unit.
Confidential

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Troubleshooting

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