Ricoh Pro 8300S - Page 262

1.SC Codes
254
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.
 HP sensor is defective.
Corresponding Motor/Sensor:
 721-20:
Lower Junction Gate Motor [STM2]
 Lower Junction Gate JP Sensor [S18]
Controller Board
 721-24:
Paper Exit Guide Plate Motor [STM4]
Exit Guide Plate HP Sensor [S34]
Controller Board
Solution
1. Motor/sensor defective
Check the motor (whether it rotates on its own, or if it is overloaded). 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, 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.