Konica Minolta bizhub C35 Service Manual page 278

DRAFT
Field Service Ver. 1.0 Feb. 2010
16.2.16 Printer monocolor: low image density
A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 IDC sensor
2 PH unit
3 Transfer belt unit
4
5
ABCDE
ABCDE
ABCDE
ABCDE
ABCDE
Check item
The surface of the IDC sensor is
dirty.
The surface of the PH window is
dirty.
Transfer belt unit makes positive
contact with plates on rails.
Is abnormality found in the cam
gear?
The problem has been eliminated
through the checks of steps up to 3.
16. IMAGE QUALITY PROBLEM
A02EF4C516DA
Result Action
YES Clean.
YES Clean with cleaning jig.
NO Check and correct contacts.
YES Change image transfer belt
unit.
NO Change imaging unit.
→ Change IDC sensor.
→ Change printer control
board.
→Change PH unit.
→Change high voltage unit.
239