Ricoh Pro 8300S - Fusing Reload Temperature Error (Sensor 5): Fusing Temperature Sensor; Sc562-02

1.SC Codes
173
Error Condition
When the main power of the machine is turned on, or the machine recovers from energy saving mode,
the fusing lamp does not reach the specified temperature within a prescribed time after heating control
starts.
Major Cause
 Fusing temperature sensor (pressure roller) (SEN80) is blocked by a foreign object.
 Fusing temperature sensor (pressure roller) (SEN80) is dirty.
 The overheating prevention device (pressure roller thermostat (TS3)) is defective.
 Connectors are not connected properly.
 Pressure roller fusing lamp (800W) (HT5) is defective.
 Fusing temperature sensor (pressure roller) (SEN80) is defective.
 AC control board is defective.
 IOB is defective.
 Harness between the AC control board and 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 then ON.
1. Inspect the area between the fusing temperature sensor (pressure roller) and the pressure roller for
any foreign objects like waste paper.
2. Check if the fusing temperature sensor (pressure roller) is dirty. If necessary, clean it.
3. Check if the heater harness and connector are properly connected.
4. Check if the overheating prevention device (Thermostat) (TS3) is conductive.
5. Replace the overheating prevention device (Thermostat) (TS3).
6. Replace the fusing lamp (HT5).
7. Replace the using temperature sensor (pressure roller) (SEN80).
8. Replace the AC control board.
9. Replace the IOB.
10. Replace the harness between the AC control board and IOB.
SC562-02
Error Name
Fusing Reload Temperature Error (Sensor 5) : Fusing Temperature Sensor (Pressure Roller)
Pattern
A