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Service Guide OL830
Chapter 4 Failure & Repair Analysis
RAP 03: Paper Jam Alarm
START
Does the paper jam occur when the power is turned ON?
NO Go to A
YES Is the paper at the resist or exit sensor?
YES Remove the paper.
NO Will the exit sensor on the engine controller circuit board toggle ON and OFF (check
on the engine controller circuit board IC3 pin 3)?
YES Check the outlet sensor lever for normal operation.
NO Replace the engine controller circuit board.
A
Is the resist roller rotating?
NO Check the planetary gearing of the paper feed assembly (replace paper feed assembly, if
necessary).
YES Has the paper reached the exit sensor?
YES Go to B
NO Is the main motor rotating?
NO Are the main motor contacts touching the engine controller circuit
board?
NO Ensure good contact.
YES Replace the engine controller circuit board
or the main motor.
Is the fuser unit rotating?
NO Check the gearing.
YES Go to B
B
Does the exit sensor on the engine controller circuit board toggle ON and OFF? Check at engine
controller circuit board IC3 pin 3.
NO Replace the engine controller circuit board.
YES Is the paper ejected normally?