Foggy Background - Konica Minolta Bizhub-C31P Service Manual

Field Service Ver. 1.0 Apr. 2008
16.1.7

Foggy background

A. Typical faulty images
B. Troubleshooting procedure
Step Section
Adjustment
1
/Setting
2
3
Imaging unit
4
5
6 PH unit
IDC sensor
7
board/Re, Fr
8
Check item
The Printer is being operated in
the climate such as dry or highly
humid.
Are there scratches or lines evi-
dent on photo conductor surface?
Is the outside dirty?
Is the connector or contact termi-
nal between each imaging unit
and PH unit connected properly?
Is the developing bias contact ter-
minal in good contact?
Is the window surface dirty?
Is the sensor dirty?
Has the problem been eliminated
through the checks of steps up to
7?
16. Image quality problems
Result Action
Adjust the image with "TRANS-
FER POWER."
YES
→ SERVICE MENU/ALIGNMENT
/TRANSFER POWER/
YES Change the imaging unit.
YES Clean.
Clean the contact terminal or
NO
reconnect the connector.
Clean the contact terminal or
NO
check the terminal position.
YES Clean.
YES Clean.
Change the PH unit.
NO
Change the IDC sensor board.
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