Printer Monocolor: Low Image Density - Olivetti PF-P09 Service Manual

22. IMAGE QUALITY PROBLEM
22.2.16

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
360
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 4.
Field Service Ver. 1.1 May 2011
A02EF4C516DA
Result Action
YES Clean.
YES Clean with cleaning jig.
NO Check and correct contacts.
YES Change transfer belt unit.
NO Change imaging unit.
Change IDC sensor.
Change printer control
board.
Change PH unit.
Change high voltage unit.