Ricoh Pro 8300S - Fusing Thermopile (Center) Error (Sensor 1); Sc541-00; Sc542-01, 02

1.SC Codes
161
Major Cause
 Connector is not connected properly.
 Foreign objects in the fan
 Fan is defective
Solution
1. Disconnect and reconnect the connector of the fan cable.
2. Perform visual check on the fan, and remove any foreign objects obstructing its rotation.
3. Touch the fan propellers gently to check its rotation.
If the propellers cannot rotate, replace the fan.
SC541-00
Error Name
Fusing Thermopile (Center) Error (Sensor 1)
Pattern
A
Error Condition
Abnormal low temperature is detected for three seconds consecutively.
Major Cause
 IOB connector is not connected properly (CN223)
 Thermopile (heating roller center) (SEN58) is damaged.
 Thermopile harness is defective.
 IOB is defective.
Solution
* If fusing SC occurs during inspection, execute "Fusing SC Reset" (SP5-810-001) in SP mode every
time SC occurs, and then turn the main power off and on.
1. Check the connector (thermopile control board connector, relay connector).
2. Check the connector of the IOB.
3. Replace the thermopile (heating roller center) (SEN58).
4. Replace the harness.
5. Replace the IOB.
SC542-01, 02
Error Name
 542-01: Fusing Reload Failure (Sensor 1): Thermopile (Heating Roller Center)