Ricoh Pro 8300S - Sc571-00; Thermopile (Heating Roller Full-Bd Ends) Defective (Sensor 3)

1.SC Codes
179
Error Condition
Fusing pressure release mechanism overrun is detected.
Major Cause
 Pressure roller cam HP sensor (SEN60) / pressure roller lift sensor (SEN61) assembly fault, or not
connected properly.
 Pressure roller cam HP sensor (SEN60) is defective.
 Pressure release unit is damaged.
 Pressure roller lift motor (BLM11) 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 pressure roller lift sensor assembly. Make sure it is connected properly.
2. Check the pressure release unit.
Output Check
 SP5805-069: Fusing Pressue Release Motor(HP)
 SP5805-070: Fusing Pressue Release Motor(Up)
Repair the unit as needed, turn the power OFF and ON, and then check if the SC recurs.
3. Replace the pressure roller cam HP sensor (SEN60).
4. Replace the pressure roller lift sensor (SEN61).
5. Replace the pressure roller lift motor (BLM11).
SC571-00
Error Name
Thermopile (Heating Roller Full-Bd Ends) Defective (Sensor 3)
Pattern
A
Error Condition
Abnormal low temperature is detected for three seconds consecutively.
Major Cause
 Thermopile (heating roller full-bd ends) (SEN85) is not connected properly.
 IOB (CN223) is not connected properly
 Thermopile is damaged.
 Thermopile harness is defective.
 IOB is defective.