Ricoh M016, Service Manual

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Service Call Conditions
SM 6-5 M016/M017
Tr
ouble
-
shooting
541
Fuser thermistor error
The thermistor output is less than 0°C for 5 seconds after the fusing lamp turns
ON.
ƒ Disconnected or defective thermistor
ƒ Disconnected or defective fusing lamp
1. Check the harness connection of the thermistor.
2. Replace the fusing unit.
ƒ Execute "Engine Maintenance Menu" to recover the machine after
completing the recovery procedure. Otherwise, the machine continues to
ƒ issue this SC code and cannot be operated.
542
Fuser reload error
This SC is issued if one of following conditions occurs:
The fusing temperature rises 8°C or less in 1.5 seconds; and this continues 5
times consecutively.
-or-
The fusing temperature has not reached 45°C within 9 seconds (after the fusing
lamp comes ON while the machine is warming-up).
-or-
The fusing unit does not attain reload temperature within 35 s. (normal
temperature) or 65 s (lower temperature – the thermistor output is less than 18°C)
after the fusing temperature control starts.
ƒ Defective or deformed thermistor
ƒ Incorrect power supply input at the main power socket
1. Defective fusing lamp