LaserWriter: Upper Fuser Roller Melting


Problem: Due to excessive heat from the fuser heater bulb,
the upper fuser roller is damaged or partially melted.

Cause #1: The problem can be caused by a defective thermistor.

Cause #2: There could be a defective fuser thermal protector,
or a dirty thermistor.


CURE:  First, replace the damaged upper and lower fuser rollers,
along with the cleaner felt, then go on to the steps listed
below.  Be  sure to pay close attention to the heat of the
fuser assembly to avoid damage to the new parts.

#1: Replace or clean the thermistor.

#2: Replace the fuser thermal protector.
Published Date: Feb 18, 2012