Ricoh PE-P4 Field Service Manual page 167

Thermistor Error
The thermistor output is less than 0°C for 7 seconds.
• Disconnected thermistor
• Defective harness connection
1. Check the harness connection of the thermistor.
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2. Replace the fusing unit.
• Execute "Engine Maintenance Menu" to recover the machine after completing the
recovery procedure. Otherwise, the machine continues to issue this SC code and cannot
be operated.
Print Ready Temperature Error
• The heating roller temperature increase during a set time is not correct.
• The fusing temperature does not reach the print ready temperature within a set time after
the fusing lamp has turned on.
• Defective thermistor
• Incorrect power supply input at the main power socket
• Defective fusing lamp
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1. Check the voltage of the wall outlet.
2. Replace the fusing unit
3. Replace the fusing lamp.
• Execute "Engine Maintenance Menu" to recover the machine after completing the
recovery procedure. Otherwise, the machine continues to issue this SC code and cannot
be operated.
Service Call Conditions
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