Oki MC160MFP Maintenance Manual page 191

Oki Data CONFIDENTIAL
19.1.3 Uneven density in sub scan direction
20.1.3 Uneven density in sub scan direction
A. Typical faulty images
B. Troubleshooting procedure
Step Section Check item
Are there scratches or lines evi-
1 dent on the photo conductor sur-
face?
2 Is the outside dirty?
Imaging
cartridge
Is the transfer belt dirty or
3
scratched?
4 Is the terminal dirty?
5 PH unit Is the window surface dirty?
2nd transfer Is the 2nd transfer roller dirty or
6
roller scratched?
Have steps 1 to 6 eliminated the
7
problem?
44292401TH Rev.1
A0CRF4C505DA
Result Action
YES Replace the imaging cartridge.
YES Clean.
Wipe the surface clean of dirt with
a soft cloth.
YES
Replace the scratched transfer
belt with a new imaging cartridge.
YES Clean.
YES Clean.
YES Replace the 2nd transfer roller.
Replace the toner cartridge.
NO Replace the PH Unit.
Replace high voltage unit.
19.1.4 Uneven density in main scan direction
20.1.4 Uneven density in main scan direction
A. Typical faulty images
B. Troubleshooting procedure
Step Section Check item
Are there scratches or lines evi-
1 dent on the photo conductor sur-
face?
2 Is the outside dirty?
Is the transfer belt dirty with fin-
3 Imaging
gerprints or oil?
cartridge
Is the transfer belt dirty or
4
scratched?
5 Is the terminal dirty?
2nd transfer Is the 2nd transfer roller dirty or
6
roller scratched?
Have steps 1 to 6 eliminated the
7
problem?
TROUBLESHOOTING
A0CRF4C506DA
Result Action
YES Replace the imaging cartridge.
YES Clean.
YES Clean.
Wipe the surface clean of dirt with
a soft cloth.
YES
Replace the scratched transfer
belt with a new imaging cartridge.
YES Clean.
YES Replace the 2nd transfer roller.
Replace the toner cartridge.
NO
Replace high voltage unit.
190 /