Ricoh Pro 8320 - Corner Stapler Movement Motor Error; Sc721-42

1.SC Codes
259
four times are reported as jams. An SC is issued when it is repeated five times.)
Major Cause
 Power of downstream device is not turned on.
 Motor is defective
 Connector is not connected properly
 Short circuit
 Harness is damaged
 There is overload.
 Home position sensor defective
Corresponding components:
 721-35
Paper Stacking Holder Motor [DCM8]
Paper Stacking Holder HP Sensor [S24]
Controller Board
 721-41:
Feed-out Belt Motor [DCM7]
Feed-out Belt HP Sensor [S12]
Controller Board
Solution
1. Motor/sensor defective
Check the motor (whether it rotates on its own, whether its drive is transmitted, or if it is
overloaded). Check if the sensor turns off and on.
If the motor or sensor is not good, replace it.
2. Connector not connected properly
Check all the connectors of each motor and sensor are correctly connected. (controller board,
motor, sensor, relay)
Reconnect the connector if it is not connected correctly.
3. Harness damaged
Check if the harness between the controller board and the motor/sensor is damaged or exposed.
Replace the harness if it is not in good condition.
4. Board defective
Check if there are any traces of short circuit on the controller board. if so, replace it.
SC721-42
Error Name
Corner Stapler Movement Motor Error (Finisher SR5090/Booklet Finisher SR5100)