Ricoh Pro 8300S - Sc566-00; Sc567-00; Software High Temperature Detection (Sensor 4); Thermistor Defective (Sensor 4): Heating Roller Thermistor (Rear)

1.SC Codes
176
any foreign objects like waste paper.
2. Check if the fusing temperature sensor (pressure roller) (SEN80) is dirty. If necessary, clean it.
3. Check if the overheating prevention device (Thermostat) (TS3) is conductive.
4. Replace the overheating prevention device (Thermostat) (TS3).
5. Check if the fusing lamp harness and connector are properly connected
6. Replace the fusing lamp (HT5).
7. Replace the harness (as well as the fusing temperature sensor (pressure roller)).
8. Replace the AC control board.
SC566-00
Error Name
Thermistor Defective (Sensor 4): Heating Roller Thermistor (Rear)
Pattern
A
Error Condition
Abnormal low temperature is detected consecutively.
Major Cause
 Heating roller thermistor (rear) (SEN9) 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. Replace the harness (as well as the thermistor).
2. Replace the IOB.
SC567-00
Error Name
Software High Temperature Detection (Sensor 4): Heating Roller Thermistor (Rear)
Pattern
A
Error Condition
Abnormal high temperature is detected consecutively.