Ricoh Pro 8320 - 721-71: Shift Motor Error (Finisher Sr5090;Booklet Finisher SR5100); 721-72: Front Fence Motor Error; 721-73: Rear Fence Motor Error; 721-74: Fence Lift Motor Error

1.SC Codes
266
 Shift Tray Lower Limit Sensor 1 [S16]
 Shift Tray Lower Limit Sensor 2 [S29]
 Shift Tray Lower Limit Sensor 3 [S30]
 Shift Tray Lower Limit Sensor 4 [S36]
 Shift Tray Lower Limit Sensor 5 [S37]
 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 component 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.
SC721-71 to 74
Error Name
 721-71: Shift Motor Error (Finisher SR5090/Booklet Finisher SR5100)
 721-72: Front Fence Motor Error (Finisher SR5090/Booklet Finisher SR5100)
 721-73: Rear Fence Motor Error (Finisher SR5090/Booklet Finisher SR5100)
 721-74: Fence Lift Motor Error (Finisher SR5090/Booklet Finisher SR5100)
Pattern
B
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.