Konica Minolta BIZHUB 163 Service Manual page 220

Field Service Ver. 1.0 Apr. 2007
16.2.10 Image reading section: Periodically uneven image
A. Typical faulty images
B. Troubleshooting procedure
Step
Scanner motor (M4) is securely fastened using the dedi-
1
cated fixing screws.
2 Scanner motor (M4) drive mechanism is dirty or damaged.
Scanner drive mechanism pulley is dirty with foreign mat-
3
ter, scratchy, deformed, worn, or damaged.
4 Scanner drive cables are wound incorrectly.
Scanner rails and bearings are dirty with foreign matter,
5
scratchy, deformed, worn, or damaged.
Scanner moves smoothly.
<Check procedure>
6
Gently move the scanner by hand to check for smooth
operation.
7 CCD board (CCDB) connector is loose.
8 MFP board (MFPB) connector is loose.
Check
16. Image quality problem
A09AF3C531DA
Result Action
NO • Secure in position.
YES • Clean or change.
• Remove foreign matter
YES
or change.
• Re-wind scanner drive
YES
cables.
YES • Clean or change.
• Lubricate the scanner
NO rails.
• Reinstall scanner.
YES • Reconnect.
YES • Reconnect.
• Change CCD unit.
NO • Change MFP board
(MFPB).
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