Oki MC160MFP Maintenance Manual page 192

Oki Data CONFIDENTIAL
19.1.5 Low image density
20.1.5 Low image density
A. Typical faulty images
B. Troubleshooting procedure
Step Section Check item
1 Is the outside dirty?
Imaging
cartridge
Is the contact dirty?
2
3 PH unit Is the window surface dirty?
2nd transfer
4 Is the contact dirty?
roller
5 Media Is the media damp?
IDC sensor
6 Is the sensor dirty?
board
Have steps 1 to 6 eliminated the
7
problem?
44292401TH Rev.1
A0CRF4C507DA
Result Action
YES Clean.
YES Clean.
YES Clean.
YES Clean.
Replace the media with new
YES media that has just been
unwrapped.
YES Clean.
Replace the toner cartridge.
Replace the Imaging car-
tridge.
Replace the 2nd transfer roller.
NO Replace the PH unit.
Replace the IDC sensor board.
Replace the printer control
board.
Replace the high voltage unit.
19.1.6 Gradation reproduction failure
20.1.6 Gradation reproduction failure
A. Typical faulty images
B. Troubleshooting procedure
Step Section Check item
Imaging
1 Is the outside dirty?
cartridge
2 PH unit Is the window surface dirty?
IDC sensor
3 Is the sensor dirty?
board
Have steps 1 to 3 eliminated the
4
problem?
TROUBLESHOOTING
A0CRF4C508DA
Result Action
YES Clean.
YES Clean.
YES Clean.
Replace the toner cartridge.
Replace the PH unit.
NO
Replace the IDC sensor board.
Replace the high voltage unit.
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