Oki 4M - Manual (Page 85)

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1 An image is light or blurred entirely.
• Is the toner low? (Is "Toner Low" being displayed?)
• Yes Supply a toner.
• No Is the specified paper being used?
• No Use the specified paper.
• Yes Is the lens of the LED head dirty?
• Yes Clean the LED head.
• No Is the LED head installed correctly? (Check the CN6 connector of the main control
board.)
• No Install the LED head correctly.
• Yes Is the contact plate of the transfer roller in correct contact with the high-voltage
power supply board? (See Figure 6-4 F .)
• Yes Is the terminal of the EP unit in correct contact with the contact plate? (See Figure
6-4 A and B )?
• No Contact the terminal correctly.
• Yes Replace the transfer roller.
• Has this error been recovered?
• Yes End
• No Replace the EP unit.
• Has this error been recovered?
• Yes End
Caution: After replacing the EP unit, reset the drum counter. (Refer to
"Replacing the Drum Cartridge" in "User's Manual".)
• No Replace the main control board or high-voltage power supply board.