44292401TH Rev.1
193 /
Oki Data CONFIDENTIAL
TROUBLESHOOTING
19.1.9
Void areas, white spots
20.1.9
Void areas, white spots
A. Typical faulty images
B. Troubleshooting procedure
A0CRF4C511DA
void areas
white spots
Step
Section
Check item
Result
Action
1
Imaging
cartridge
Are there scratches or lines evi-
dent on the photo conductor sur-
face?
YES
Replace the imaging cartridge.
2
Is the outside dirty?
YES
Clean.
3
Is the transfer belt dirty with fin-
gerprints or oil?
YES
Clean.
4
Is the transfer belt dirty or
scratched?
YES
Wipe the surface clean of dirt with
a soft cloth.
Replace the scratched transfer
belt with a new imaging cartridge.
5
Is the ground terminal connected
properly?
NO
Correct.
6
2nd transfer
roller
Is the 2nd transfer roller dirty or
scratched?
YES
Replace the 2nd transfer roller.
7
Media path
Is there a foreign object in the
media path?
YES
Remove the foreign object.
8
Is the fusing entrance guide plate
dirty or scratched?
YES
Clean or replace.
9
Have steps 1 to
8
eliminated the
problem?
NO
Replace the toner cartridge.
19.1.10
Colored spots
20.1.10
Colored spots
A. Typical faulty images
B. Troubleshooting procedure
A0CRF4C512DA
colored spots
Step
Section
Check item
Result
Action
1
Imaging
cartridge
Are the spots in a single color?
NO
Replace the imaging cartridge.
2
Are there scratches or lines evi-
dent on the photo conductor sur-
face?
YES
Replace the imaging cartridge.
3
Is the Transfer Belt dirty with fin-
gerprints or oil?
YES
Clean.
4
Is the transfer belt dirty or
scratched?
YES
Wipe the surface clean of dirt with
a soft cloth.
Replace the scratched transfer
belt with a new imaging cartridge.
5
2nd transfer
roller
Is the 2nd transfer roller dirty or
scratched?
YES
Replace the 2nd transfer roller.
6
Media path
Is there a foreign object in the
media path?
YES
Remove the foreign object.
7
Fuser unit
Is the fusing roller dirty or
scratched?
YES
Replace the fuser unit.
8
Have steps 1 to 7 eliminated the
problem?
NO
Replace the toner cartridge.
Содержание MC160MFP
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