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■ Poor fixing
<User Check>
- Replace the drum unit with a new one.
- Replace the toner cartridge with a new one.
Step Cause Check
Result
Remedy
1
High pressure of
pressure roller in
the fuser unit
Is the problem solved by
changing the position of
the anti-curl lever?
Yes
Change the position of the
anti-curl lever.
2
Fuser unit failure Is the problem solved
after replacing the fuser
unit?
Yes
Replace the fuser unit.
3
Toner sensor
failure
Is the "Toner life End"
message indicated on
the LCD after replacing
the current toner
cartridge with a new
one?
No
Replace the toner sensor.
4
HVPS PCB
failure
Is the problem solved
after replacing the
HVPS PCB ASSY?
Yes
Replace the HVPS PCB
ASSY.
5
Main PCB failure Is the problem solved
after replacing the main
PCB ASSY?
Yes
Replace the main PCB
ASSY.
6
Low-voltage
power supply
PCB failure
Is the problem solved
after replacing the PS
PCB unit?
Yes
Replace the PS PCB unit.