Oki OKIPAGE 12i Service Handbook page 123

8
White vertical belts or streaks
• Are the LED lens dirty?
• Yes
• No Is the contact plate of the transfer roller in proper contact with the power supply/sensor
board (see Figure 6-5)?
• No
• Yes Replace the transfer roller.
• Has the problem been solved?
• Yes
• No Is the tension between the back-up roller (7.52kg) and the surface of back-up roller
normal?
•No
• Yes Is the LED head being installed properly (check HEAD1 and HEAD2 connectors on the
main control board and PC connector on the LED head)?
• No
• Yes Replace the LED head.
• Has the problem been solved?
• Yes
• Yes Replace the image drum cartridge.
• Has the problem been solved?
• Yes
• No Replace the main control board or power supply/sensor board.
Clean the LED lens.
Adjust the contact plate to make a proper contact with the power supply/sensor
board.
End
Replace the back-up roller or bias spring.
Install the LED head properly.
End
Note: After replacing the LED head, set the printer to the engine maintenance
mode by turning the power on while pressing the FORM FEED and
ENTER keys. Set the LED head drive time (see 4.2).
End
Note: After replacing the image drum cartridge, set the printer to the user
maintenance mode by turning the power on while pressing the MENU
key. Reset the drum counter (see Printer Handobook).
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