Ricoh Pro 8310 - Sc754-30; Sc754-31

1.SC Codes
521
Solution
 Reconnect the connector.
 Replace the switchback roller lift motor.
 Replace the switchback roller HP sensor.
 Replace the master control board.
 Replace the motor harness.
 Replace the sensor harness.
After the repairs, cancel the low performance mode, and then turn the power off/on.
SC754-30
Error Name
Perfect Binder: Switchback Roller HP Sensor Lag Error
Pattern
B
Error Condition
During the switchback roller lowering, the switchback roller HP sensor did not go OFF, even though the
switchback roller lift motor operated long enough for lowering through an arc of 20 degrees.
Major Cause
 Switchback roller HP sensor defective
 Switchback roller lift motor defective
 Connector loose, damaged, or defective
 Master control board defective
Solution
 Reconnect the connector.
 Replace the switchback roller lift motor.
 Replace the switchback roller HP sensor.
 Replace the master control board.
 Replace the motor harness.
 Replace the sensor harness.
After the repairs, cancel the low performance mode, and then turn the power off/on.
SC754-31
Error Name
Perfect Binder: Stacking Tray Lower Limit Late Error