Konica Minolta Bizhub-C31P, Service Manual, Page: 266 / 370

Field Service V er. 1.0 Apr. 200 8 16. Image quality problems
229
bizhub C31P
T
roubleshooting
16.1.9 Void areas, white spots
A. Typical faulty images
B. Troubleshooting procedure
A0EAF4C509DA
void areas white spots
Step Section Check item Result Action
1
Adjustment
/Setting
Thick or special media is being
used.
YES
Adjust the image with “TRANS-
FER POWER.”
→
SER V ICE MENU/ALIGNMENT
/TRANSFER POWER/
2
Imaging unit
Are there scratches or lines evi-
dent on photo conductor surface?
YES Change the imaging unit.
3 Is the outside dirty? YES Clean.
4
Transfer belt
Is the transfer belt dirty with fin-
gerprints, oil, or other foreign mat-
ter?
YES Clean.
5
Is the transfer belt dirty or
scratched?
YES
Wipe the surface clean of dirt with
a soft cloth.
Change a scratched transfer belt
for a transfer belt.
6
Is the transfer roller dirty or
scratched?
YES Change the transfer roller.
7
Is the ground terminal connected
properly?
NO Correct.
8
Media path
Is there a foreign matter on the
media path?
YES Remove foreign matter.
9
Is the fusing entrance guide plate
dirty or scratched?
YES Clean or change.
10
Has the problem been eliminated
through the checks of steps up to
9?
NO Change the transfer belt.