Ricoh D131 Service Manual page 523

SC700: Peripherals
SC722-35 D
SC722-36 D
D131/D132/D133
Stack Plate Motor Error 1: Front Motor(D610)
The stack plate HP sensor (front) does not activate within 500 ms
after the motor turns on. The 1st detection failure causes a jam
error, and the 2nd failure causes this SC code.
If the motor is operating

Front stack plate HP sensor harness loose, broken, defective

Front stack plate HP sensor defective
If the motor is not operating:

Motor blocked by an obstruction

Motor harness loose, broken, defective

Motor defective

Booklet finisher main board defective
Stack Plate Motor Error 2: Center Motor (D610)
The stack plate HP sensor (center) does not activate within 500 ms
after the motor turns on. The 1st detection failure causes a jam
error, and the 2nd failure causes this SC code.
If the motor is operating

Center stack plate HP sensor harness loose, broken, defective

Center stack plate HP sensor defective
If the motor is not operating:

Motor blocked by an obstruction

Motor harness loose, broken, defective

Motor defective

Booklet finisher main board defective
2-56 SM Appendix