Printer Monocolor: Uneven Density In Sub Scan Direction - Olivetti PF-P09 Service Manual

22. IMAGE QUALITY PROBLEM
22.2.14

Printer monocolor: uneven density in sub scan direction

A. Typical faulty images
B. Troubleshooting procedure
Step Section
1 Imaging unit
2
3 PH unit
4 Transfer roller
unit
5
6 Transfer belt
unit
7
358
Check item
The surface of the PC drum is
scratched.
Dirty on the outside.
The surface of the PH window is
dirty.
Transfer roller is installed properly.
Transfer roller is dirty or scratched.
Is abnormality found in the cam
gear?
The problem has been eliminated
through the checks of steps up to 6.
Field Service Ver. 1.1 May 2011
Result Action
YES Change imaging unit.
YES Clean.
YES Clean with cleaning jig.
NO Reinstall.
YES Change transfer roller unit.
YES Change transfer belt unit.
NO Change PH unit.
Change High voltage unit.
Printer control board.
A02EF4C520DA