Printer 4-Color: Uneven Density In Main Scan Direction - Konica Minolta bizhub C650 Service Manual

Field Service Ver. 8.0 Jun. 2008
18.3.30

Printer 4-color: uneven density in main scan direction

A. Typical faulty images
B. Troubleshooting procedure
Step Section
Transfer belt unit Fingerprints, oil, or other foreign
1
2
3
Transfer roller
4
unit
5
6
4036fs4046c0
Check item
matter is evident on the transfer
belt.
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.
18. Image quality problem
4036fs4047c0
Result Action
YES Clean with specified solvent.
(See Maintenance.)
YES Clean dirty belt with a soft cloth.
Change transfer belt unit if belt is
damaged.
YES Clean.
NO Reinstall.
YES Change transfer roller unit.
NO Change transfer belt unit.
→ Change high voltage unit/2.
725