Confidential
9-37
(I-12) Poor fixing
Possible cause
Step
Check
Result
Remedy
Print paper 1 Is thick paper of more than
43lb being used?
Yes Recommend to use the specified
types of paper.
Nip release
lever
2 Does the position of the nip
release levers in the fuser
unit decompress the nip
pressure?
Yes
Return the nip release levers to
the original position.
Toner sensor
failure
(When
printing is
faint.)
3 Is the problem solved by
replacing the drum unit or
the toner cartridge?
Yes 1) Toner is empty.
2) The toner sensor is defective.
Clean the toner sensor.
3) If the wiper in the toner
cartridge is broken, replace the
toner cartridge with a new one.
Fuser unit
thermistor
failure
4 Is the thermistor fitted
correctly?
No Fit the thermistor correctly.
Low-voltage
power supply
PCB failure
5 Is the problem solved by
replacing the low-voltage
power supply PCB?
Yes Replace the low-voltage power
supply PCB.
Open the back cover and fuser cover. Push down the blue tab (1). Repeat this process on the other
side. Make sure that the top of the tab and the white lever (2) are not level with each other. Close
the back cover and try printing again.
1
2
2
1
Fig. 9-2
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