Ricoh D131 Service Manual page 536

Entrance JG Motor
The entrance junction gate HP sensor did not detect the entrance
junction gate at (or out of) its home position. The 1st occurrence
causes a jam, and the 2nd occurrence causes this SC code.
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SC725-74 D
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Cover interposer tray bottom plate motor error
After the motor starts to raise the bottom plate, the bottom plate
SC740-10 B
position sensor does not detect the plate at the specified time (3 s).
After the motor starts to lower the bottom plate, the bottom plate
HP sensor does not detect the bottom plate.
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SM Appendix
Entrance JG HP sensor dirty
Sensor harness or connector loose, broken, defective
Entrance JG motor harness or connector loose, broken,
defective
Sensor defective
Motor or motor drive board defective
Bottom plate position sensor, disconnected, defective
Bottom plate HP sensor disconnected, defective
2-69
SC700: Peripherals
Multi Folder (D615)
D131/D132/D133