Ricoh Pro 8300S - 1 St Tray Lowering Error (Cover Interposer Tray); Sc740-11

1.SC Codes
304
 Paper is not set properly (the paper does not reach the pick-up roller)
 1st upper limit sensor and the sensor bracket is defective.
 Main controller board is defective.
3. Check that the 1st lift motor connector is connected correctly.
4. Replace the 1st lift motor.
5. Check that the 1st lift motor harness with the relay connectors is connected correctly.
6. Replace the relay harness of the 1st lift motor.
7. Check that the 1st upper limit sensor connector is connected correctly.
8. Replace the 1st upper limit sensor.
9. Check that the 1st upper limit sensor harness is connected correctly.
10. Replace the 1st upper limit sensor harness.
11. Replace the gear and coupling of the 1st lift motor.
12. Check the bottom plate rise mechanism parts in the paper feed tray, and replace them as
necessary.
13. If the pick-up roller does not change to the upper limit status due to paper not set correctly, set the
paper again, and then check the operation.
14. Replace the 1st upper limit sensor and the sensor bracket.
15. Replace the main controller board.
SC740-11
Error Name
1st Tray Lowering Error (Cover Interposer Tray)
Pattern
B
Error Condition
The lift motor rotates to lower the tray, but the lower limit sensor does not turn on (it remains blocked)
within the specified time, for five times consecutively. (From the first to fourth times, an error is counted
inside the cover interposer tray and it is processed as a normal termination)
Major Cause
 Power of downstream unit is not turned on.
 1st lift motor is defective or connector is disconnected.
 1st lower limit sensor is defective or connector is disconnected.
 Harness is damaged.
 Main controller board is defective.
Solution
1. Remove all paper from the cover interposer tray. Turn the power off and on, and then check if other