Printer Section: Periodically Uneven Image - Konica Minolta bizhub 164 Service Manual

16. IMAGE QUALITY PROBLEM
16.2.23

Printer section: Periodically uneven image

A. Typical faulty images
B. Troubleshooting procedure
Step
1 IU is securely fastened using the dedicated fixing screws.
2 PH unit is securely fastened using the dedicated fixing
screws.
3 IU drive mechanism is dirty or damaged.
4 Drum surfaces in contact with Ds collars and drive mecha-
nism are dirty, scratchy, deformed, or worn.
5 Registration roller drive mechanism is dirty, scratchy,
deformed, or worn.
6 Fusing unit drive mechanism is dirty, scratchy, deformed,
or worn.
162
Check
Field Service Ver. 2.0 Jun. 2010
A09AF3C531DA
Result Action
NO • Secure in position.
NO • Secure in position.
YES • Clean or change.
YES • Clean or change.
YES • Clean or change.
YES • Clean or change.
NO • Change printer control
board (PRCB).