Page: 88
Service Guide OL400
Chapter 4 Failure & Repair Analysis
RAP 14:Black Page
START
Is the charge wire broken?
YES
Replace the image drum cartridge. Power ON while pressing the
RECOVER
switch to clear the drum counter.
NO
Replace the high voltage power supply unit.
Is the problem resolved?
YES
END
NO
Replace the LED head.
Is the problem resolved?
YES
END
NO
Replace the engine controller board.
Is the problem resolved?
YES
END
NO
Replace the image drum cartridge. Power ON while pressing the RECOVER
switch to clear the drum counter.
END
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