The thermofuse and the thermistor is located in the fusing unit.Open the front cover,remove 1 screw and pull out the fusing unit(the left exit cover must open).Remove 2 screws and the unit front cover.Remove 2 screws and the upper cover,remove the harness from the harness guide,unplug the connectors of the two thermistors.Remove one screw,shoulder screw and the harness guide,remove one screw and the thermoswitch cord,remove 2 screws and the temperature detector assy.Using a soft cloth dampened with alcohol or oil,wipe clean the 2 thermistors.Verify a continuity of the thermoswitch and clean using a soft cloth dampened with alcohol,wipe clean the thermoswitch.99% the problem is a thermofuse.
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