Printer 4-Color: Uneven Density In Sub Scan Direction - Konica Minolta bizhub C250 Service Manual

18. Image quality problem
18.3.28

Printer 4-Color: uneven density in sub scan direction

A. Typical Faulty Images
B. Troubleshooting Procedure
Step Section
Image Transfer
1 Belt Unit
2
3
2nd Image
4
Transfer Roller
Unit
5
6
416
4036fs4043c0
Check Item
Fingerprints, oil, or other foreign
matter is evident on the Image
Transfer Belt.
Image Transfer Belt is dirty or
scratched.
Terminal is dirty.
Image Transfer Roller is installed
properly.
Image Transfer Roller is dirty or
scratched.
The problem has been eliminated
through the checks of steps up to 5.
Field Service Ver. 1.0 Jul. 2005
4036fs4044c0
Result Action
YES Clean with specified solvent.
(See Maintenance.)
YES Clean dirty belt with a soft cloth.
Change Image Transfer Belt Unit
if belt is damaged.
YES Clean.
NO Reinstall.
YES Change 2nd Image Transfer
Roller Unit.
NO Change Image Transfer Belt Unit.