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Service Guide OL830
Chapter 4 Failure & Repair Analysis
RAP 20: Black Output
START
Is the charge wire broken?
YES Replace the image drum cartridge. Reset the drum counter.
Refer to the OL830 Solutions
Manual.
NO Replace the high voltage power supply unit.
Is the problem solved?
YES END
NO Replace the LED head.
Is the problem solved?
YES END
NO Replace the engine controller board.
Is the problem solved?
YES END
NO Replace the image drum cartridge. Reset the drum
counter.
END
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