Ricoh M065 Service Manual page 332

SC Tables
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Temperature and humidity sensor error
498 C
1.
2.
M065/M066
The thermistor output of the temperature sensor was not within the
prescribed range (0.2V to 3.5V).
The thermistor output of the humidity sensor was not within the
prescribed range (0.01V to 2.4V).
Temperature and humidity sensor harness disconnected, loose,
defective
Temperature and humidity sensor defective
Check the connector and harness.
Replace the temperature/humidity sensor.
3-22 SM Appendix