Low Image Density - Konica Minolta Bizhub-C31P Service Manual

Field Service Ver. 1.0 Apr. 2008
16.1.5

Low image density

A. Typical faulty images
B. Troubleshooting procedure
Step Section
Adjustment
1
/Setting
2 Imaging unit
3 PH unit
4
Transfer belt
5
6 Media
IDC sensor
7
board/Re, Fr
8
Check item
The printer is being operated in
the climate such as dry or highly
humid.
Is the outside dirty?
Is the window surface dirty?
Is the contact on the rail of the
transfer belt in good contact with
the mating part?
Is the terminal dirty?
Is the media damp?
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 Clean.
YES Clean.
NO Check or correct contact.
YES Clean.
Replace the media with media
YES
that has just been unwrapped.
YES Clean.
Change the imaging unit.
Change the transfer belt.
Change the PH unit.
NO Change the IDC sensor board.
Change the print control board.
Change the high voltage unit/1.
Change the high voltage unit/2.
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