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Service Guide OL830
Chapter 4 Failure & Repair Analysis
RAP 21: Poor Fusing
START
Is the heater lamp turning ON?
NO Replace the engine controller board.
YES Replace the fuser assembly.
Has the problem been solved?
YES END
NO Are the backup roller springs normal?
NO Replace the springs.
YES Replace the fuser assembly.
Is the problem solved?
YES END
NO Replace the engine controller circuit board.
END
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