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Service Guide OL400
Chapter 4 Failure & Repair Analysis
RAP 12:Blank Spots
START
Does the printer contain sufficient toner?
NO
Add Toner
YES
Is the paper recommended for use in a laser printer?
NO
Use paper recommended for a laser printer and make sure the print side
is up.
YES
Make sure the print side is up.
Has the trouble been resolved?
YES
END
NO
Is the transfer wire broken or nicked?
YES
Replace the transfer wire assembly.
NO
Clean the transfer wire.
Has the trouble been resolved?
YES
END
NO
Replace the image drum cartridge. Power ON while pressing the
RECOVER
switch to clear the drum counter.
Has the trouble been resolved?
YES
END
NO
Replace the high voltage power supply unit.
END
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