Ricoh Pro 8300S - A4 LCT Tray 1 Upper Limit Detection Error; Sc504-01

1.SC Codes
94
2. Check the connectors of the harnesses related to upper limit detection (pickup roller lift sensor
(Tray 3) (SEN37) / pickup roller solenoid (Tray 3) (SOL3)).
Reconnect the connectors.
3. Check the electrical components related to upper limit detection (pickup roller lift sensor (Tray 3)
(SEN37) / pickup roller solenoid (Tray 3) (SOL3) / tray lift motor (Tray 3) (BM3)).
If they are defective, replace the components.
4. Check the harnesses (pickup roller lift sensor (Tray 3) (SEN37) / pickup roller solenoid (Tray 3)
(SOL3)).
If the harnesses are defective, replace the harnesses.
5. Replace the RYB.
6. Replace the IOB.
SC504-01
Error Name
A4 LCT Tray 1 Upper Limit Detection Error
Pattern
B
Error Condition
During tray initialization, the upper limit sensor fails to detect before the tray is lifted (the pick-up
solenoid is off) (five times consecutively).
Major Cause
 Power of downstream unit is not turned on.
 Pick-up solenoid (Tray 3) (SOL3) is defective or not connected properly.
 Pickup roller lift sensor (Tray 3) (SEN37) is defective or not connected properly.
 Harnesses are damaged.
Solution
In addition to checking for sensor/actuator defect by eye, also execute Input/Output Check as
necessary.
1. Check the connectors of the harnesses related to upper limit detection (pickup roller lift sensor
(Tray 3) (SEN37 / pickup roller solenoid (Tray 3) (SOL3)).
Reconnect the connectors.
2. Check the electrical components related to upper limit detection (pickup roller lift sensor (Tray
3) (SEN37 / pickup roller solenoid (Tray 3) (SOL3) / tray lift motor (Tray 3) (BM3).
If they are defective, replace the components.
3. Check the harnesses (pickup roller lift sensor (Tray 3) (SEN37 / pickup roller solenoid (Tray 3)
(SOL3)).