Ricoh D131 Service Manual page 1527

Details
2.5.9 SENSORS AROUND TOP TRAY
1. Top Tray Full Sensor (R)
2. Entrance JG HP Sensor
3. Top Tray Full Sensor (E)
4. Top Tray Exit Sensor
5. Top Tray Paper Path Sensor
6. Entrance Sensor
7. Horizontal Path Paper Sensor
8. Vertical Path Paper Sensor
9. Horizontal Path Exit Sensor
D454/D615 134 SM