Ricoh Pro 8320 - Perfect Binder: Stacking Tray Lower Limit Late Error; Perfect Binder: Switchback Roller HP Sensor Lag Error; Sc751-83; Sc751-84

1.SC Codes
404
SC751-83
Error Name
Perfect Binder: Switchback Roller HP Sensor Lag Error
Pattern
D
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
Solution
 Reconnect the connector.
 Replace the switchback lift motor.
 Replace the switchback roller HP sensor.
 Replace the master control board.
 Replace the motor harness.
 Replace the sensor harness.
SC751-84
Error Name
Perfect Binder: Stacking Tray Lower Limit Late Error
Pattern
D
Error Condition
When the stacking tray was lowered, the tray lower limit sensor did not go ON after the stacking tray lift
motor had operated long enough for 90 mm of lift.
Major Cause
 Tray lower limit sensor defective
 Stacking tray lift motor defective