Ricoh Pro 8300S - 720-50: Booklet Stapler Side Fence Motor Error; 720-51: Booklet Stapler Top Fence Motor Error

1.SC Codes
229
SC720-50, 51
Error Name
 720-50: Booklet Stapler Side Fence Motor Error
 720-51: Booklet Stapler Top Fence Motor Error
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.
 Motor is defective
 Connector is not connected properly
 Harness is damaged
 There is overload.
 HP sensor is defective.
 Board is defective.
Corresponding Motor/Sensor
 720-50:
Booklet stapler side fence motor <STM13>
Booklet stapler side fence HP sensor (front) <SN28>
Booklet stapler side fence HP sensor (rear) <SN29>
 720-51:
Booklet stapler top fence motor <STM12>
Booklet top fence HP sensor <SN22>
Solution
1. Connector not connected properly
Check if the connectors between the main board of finisher SR5110/SR5120 and the motor are
connected correctly (whether they are disconnected or incorrectly connected).
Reconnect it if it is not connected correctly.
2. Damaged harness
Check if the harness between the main board of Finisher SR5110/SR5120 and the motor is
damaged or exposed.