Ricoh Pro 8300S - 510-01: Double-Feed Sensor Error 1; Multi Bypass Tray Lowering Timeout Error; Sc509-03; Sc510-01, 02

1.SC Codes
144
SC509-03
Error Name
Multi Bypass Tray Lowering Timeout Error
Pattern
B
Error Condition
At paper end or when the tray lift switch is pressed, the lower limit sensor fails to detect after the tray
was lowered for a prescribed time.
Major Cause
 Power of downstream unit is not turned on.
 Lift motor is defective or not connected properly.
 Lower limit sensor is defective or not connected properly.
 Harnesses are damaged.
 PCB is defective.
Solution
In addition to checking for sensor/actuator defect by eye, also execute Input/Output Check as
necessary.
1. Set (slide) the bypass tray again. Turn the main power OFF and then ON.
2. Check the connectors of the harnesses related to tray lift (lift motor, lower limit sensor, relay
harness).
Reconnect the connectors. Turn the main power OFF and then ON.
3. Check the electrical components related to excessive lifting of bottom plate (lift motor, upper limit
sensor).
If they are defective, replace the components. Turn the main power OFF and then ON.
4. Check the mechanical components related to excessive lifting of bottom plate (bottom plate /
interference of the paper height sensor and feeler)
If they are defective, replace the components. Turn the main power OFF and then ON.
5. Check the harnesses of the multi bypass tray unit (lift motor, lower limit sensor, relay harness).
If the harnesses are defective, replace the harnesses. Turn the main power OFF and then ON.
6. Replace the multi bypass tray PCB. Turn the main power OFF and then ON.
7. Replace the A3 LCT PCB. Turn the main power OFF and then ON.
SC510-01, 02
Error Name
510-01: Double-Feed Sensor Error 1