Oki OKIPAGE18 Maintenance Manual page 144

2
Dark background density
• Has the image drum been exposed to external light?
• Yes
• No Is the heat roller of the fusing unit dirty?
• Yes
• No Is the contact of the cleaning roller of the image drum cartridge contacted with e
contact assembly properly? (See Figure 6-5
• No
• Yes Replace the image drum cartridge.
• Has the trouble been removed?
• YES END
• No Replace the Main board or Power Supply Unit (High Voltage).
3 Black paper is output.
• Is the LED head connected properly? (Check connector HEAD1 (14P), HEAD2 (12p) on
the Main board and PC connector on the LED head.)
• No
• Yes Is the contact of the image drum cartridge contacted with the ground contact
properly. (See Figure 6-5
• No
• Yes Check the connectors HEAD1 (14P) and HEAD2 (12P)
• No
• Yes Replace the connector
• Has the trouble been removed.
• YES END
• No Replace the Main board or Power Supply Unit (High Voltage).
40931201TH Rev. 4
Mount the image drum in the printer and wait for about 30 minutes.
Clean the heat roller.
Adjust the contact of the cleaning roller to contact the contact assembly prop-
erly.
Note: After replacing the image drum cartridge, set the printer in the user
maintenance mode by turning the power on while pressing the MENU
key, and reset the drum counter. (Refer to User's Manual.)
Connect the LED head properly or replace the head cable.
Check the ground contact of the image drum cartridge.
Replace the LED head.
Note: After replacing the LED head, set the printer in the engine mainte-
nance mode by turning the power on while pressing the FORM FEED
and ENTER keys. Set the LED head drive time. (Refer to Section
4.2.)
.)
C
.)
D
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