User Check- Page 154

CHAPTER 6  TROUBLESHOOTING

6-32

I-11

Faulty registration

Possible cause

Step

Check

Result

Remedy

Excessive paper
load

1

Is the paper loaded in the
paper cassette more than
27mm high?

Yes

Instruct the user to keep paper
loads below 27mm in depth.

Print paper

2

Is the specified weight of the
recommended paper being
used?

No

Recommend to use the specified
types of paper.

3

Is the first printing position
within ±1mm of the tolerance
specification?

Yes

Adjust the Y offset by using the
utility software supplied.

Rear resist
sensor position
incorrect

4

Is the position of the rear
registration sensor normal?

No

Reposition the sensor to the
correct position.

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.

Toner sensing
failure
(When printing
is faint.)

2

Is the problem solved by
replacing the drum unit or the
toner cartridge?

Yes

1) Toner is empty.
2) The toner sensing is

defective.  Clean the toner
sensor.

3) If the wiper in the toner

cartridge is broken, replace
the toner cartridge with a new
one.

Thermistor
failure

3

Is the thermistor fitted
correctly?

No

Fit the thermistor correctly.

Low-voltage
power supply
PCB failure

4

Is the problem solved by
replacing the low-voltage
power supply PCB?

Yes

Replace the low-voltage power
supply PCB.