Oki 6E - Manual (Page 143)

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8 White vertical belts or streaks
• Are the LED lens dirty?
• Yes Clean the LED lens.
▼
• No Is the contact plate of the transfer roller in proper contact with the power supply
board (see Fig. 6-5)?
• No Adjust the contact plate to make a proper contact with the power supply
board.
▼
• Yes Replace the transfer roller.
• Has the problem been removed?
• Yes End
▼
• No Is the LED head being installed properly (check CN4 connector on the Main
Control PCB and PC connector on the LED head)?
• No Install the LED head properly.
▼
• Yes Replace the LED head.
• Has the problem been removed?
• Yes End
Note: After replacing the LED head, set the printer in 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).
▼
• Yes Replace the image drum unit.
• Has the problem been removed?
• Yes End
Note: After replacing the image drum unit, set the printer in the user
maintenance mode by turning the power on while pressing the MENU
key. Reset the drum counter (see User’s Manual).
▼
• No Replace the Main Control PCB or power supply board.