Oki MC160MFP, Maintenance Manual

Page: 193 / 207

44292401TH Rev.1
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Oki Data CONFIDENTIAL
TROUBLESHOOTING
19.1.7 Foggy background
20.1.7 Foggy background
A. Typical faulty images
B. Troubleshooting procedure
A0CRF4C509DA
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 contact terminal of the
imaging cartridge connected
properly?
NO Clean the contact terminal.
4 Toner cartridge
Is the developing bias contact ter-
minal in good contact?
NO
Clean the contact terminal or
check the terminal position.
5
PH unit
Is the connector or contact termi-
nal of the PH unit connected
properly?
NO
Clean the contact terminal or
reconnect the connector.
6 Is the window surface dirty? YES Clean.
7
IDC sensor
bozrd
Is the sensor dirty? YES Clean.
8
Have steps 1 to 7 eliminated the
problem?
NO
Replace the toner cartridge.
o
Replace the PH unit.
o
Replace the IDC sensor board.
19.1.8 Poor color reproduction
20.1.8 Poor color reproduction
A. Typical faulty images
B. Troubleshooting procedure
A0CRF4C510DA
Step Section Check item Result Action
1 Media Is the media damp? YES
Replace the media with new
media that has just been
unwrapped.
2
imaging
cartridge
Is the terminal dirty? YES Clean.
3
IDC sensor
board
Is the sensor dirty? YES Clean.
4
Have steps 1 to 3 eliminated the
problem?
NO
Replace the imaging cartridge.
o
Replace the IDC sensor board.
o
Replace the printer control
board.
o
Replace the high voltage unit.