Ricoh MP C2504 Field Service Manual page 815

6. Troubleshooting
SC No.
SC497-00
SC No.
SC498-00
806
Level Error Name/Error Condition/Major Cause/Solution
C Machine temperature detection thermistor error
Temperature sensor output error: Below 0.56V, or above 3.0V
• Connector disconnection or broken
• Sensor (Thermistor) defective
Check if the SC occurs by turning the power OFF then ON. If the SC
occurs again, do the following steps. Check if the SC reoccurs by cycling
the power after each step.
1. Check if all connectors related to the Imaging Temperature Sensor
(Thermistor) are connected securely. Reconnect the connectors if
they are disconnected, or loose.
2. Replace the Imaging Temperature Sensor (Thermistor).
Level Error Name/Error Condition/Major Cause/Solution
C Temperature and humidity sensor error
Temperature sensor output error: Below 0.76V, or above 2.90V, or
Moisture sensor output error: more than 2.4V
• Sensor not setting (disconnection or broken)
• Sensor defective
Check if the SC occurs by turning the power OFF then ON. If the SC
occurs again, do the following steps. Check if the SC reoccurs by cycling
the power after each step.
1. Check if all connectors related to the Temperature and Humidity
Sensor are connected securely. Reconnect the connectors if they are
disconnected, or loose.
2. Replace the Temperature and Humidity Sensor.