Konica Minolta BIZHUB 163 Service Manual page 214

Field Service Ver. 1.0 Apr. 2007
16.2.4 Image reading section: Foggy background or rough image
A. Typical faulty images
B. Troubleshooting procedure
Step
1 Original glass is dirty.
2 Scanner mirrors are dirty.
3 Exposure lamp (LA1) is dirty.
CCD unit lens and CCD surface are dirty.
4 <Check procedure>
Remove lens cover to check for possible contamination.
Exposure lamp is abnormally lit (flickers or abnormally
5
dark) when the Start key is pressed.
6 Inverter board (INVB) connector is loose.
7 CCD board (CCDB) connector is loose.
Check
16. Image quality problem
A09AF3C525DA
Result Action
YES • Clean.
YES • Clean.
YES • Clean.
YES • Clean.
NO • Go to step 7.
YES • Reconnect.
• Change exposure lamp
NO
(LA1).
YES • Reconnect.
• Change inverter board
(INVB).
NO
• Change MFP board
(MFPB).
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