Ricoh Pro 8300S - Sc501-06; Sc502-01; Tray 1 Left Tray Paper End Sensor Error; Tray 2 Bottom Plate Lift Error

1.SC Codes
90
6. Replace the RYB.
7. Replace the IOB.
SC501-06
Error Name
Tray 1 Left Tray Paper End Sensor Error
Pattern
C
Error Condition
Tray 1 left tray paper end sensor fails to detect.
Major Cause
 Rear fence is stuck or damaged.
 Harnesses are not connected properly, or are damaged.
 Left tray paper end sensor (SEN39) is damaged.
 Rear fence motor (BM4) is damaged.
 RYB, IOB are defective.
Solution
1. Check if the Tray 1 rear fence moves. (Check if there are foreign objects obstructing it)
2. Reconnect the harnesses near the left tray paper end sensor (SEN39).
3. Replace the harnesses.
4. Replace the left tray paper end sensor (SEN39).
5. Replace the rear fence motor (BM4).
6. Replace the RYB.
7. Replace the IOB.
SC502-01
Error Name
Tray 2 Bottom Plate Lift Error
Pattern
B
Error Condition
An error is detected when lifting the Tray 2 bottom plate.