Ricoh B230 Service Manual page 277

No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
High voltage power: Image transfer/ paper transfer bias output error
An error signal is detected for 0.2 seconds when charging the
separation, image transfer bet or paper transfer roller.
High voltage leak
Broken harness
492 D
Defective image transfer belt unit or paper transfer unit
Defective high voltage supply unit
1. Check or replace the harness.
2. Replace the image transfer belt unit or paper transfer unit.
3. Replace the high voltage supply unit.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
Temperature and humidity sensor error 2
The thermistor output of the temperature sensor was not within the
prescribed range (0.5V to 4.2V).
The thermistor output of the humidity sensor was not within the
prescribed range (0.01V to 2.4V).
498 C
Temperature and humidity sensor harness disconnected, loose,
defective
Temperature and humidity sensor defective
1. Check the connector and harness.
2. Replace the temperature/humidity sensor.
SM 4-37 B230/B237