Ricoh Pro 8300S - Punch Drive Motor Error (Finisher Sr5090;Booklet Finisher SR5100); Sc721-25

1.SC Codes
255
SC721-25
Error Name
Punch Drive Motor Error (Finisher SR5090/Booklet Finisher SR5100)
Pattern
D
Error Condition
 Home position is not detected within the specified time when moving to the home position. (The
first four times are reported as jams. An SC is issued when it is repeated five times.)
 Home position remains detected after a specified time after leaving the home position. (The first
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.
 Encoder is defective.
 HP sensor is defective.
Component:
 Punch Drive Motor [DCM13]
 Punch HP Sensor [S38]
 Punch Motor Rotation Sensor [S39]
 Controller Board
 Punch Unit Controller Board
Solution
1. Motor/sensor defective
Check the motor (whether it rotates on its own, and whether its drive is transmitted). Check if the
sensor turns off and on.
Replace the motor or sensor.
2. Connector not connected properly
Check that all the connectors are correctly connected. (controller board, punch unit board, motor,
sensor)
Reconnect the connector if it is not connected correctly.
3. Harness damaged