Ricoh Pro 8320 - 1 St Tray Lift Error (Cover Interposer Tray); Sc740-10

1.SC Codes
303
SC740-10
Error Name
1st Tray Lift Error (Cover Interposer Tray)
Pattern
B
Error Condition
The lift motor rotates to lift the tray, but the upper limit sensor does not turn on (it remains blocked)
within the specified time, for five times consecutively. (From the first to fourth times, message is
displayed asking to set the paper again. An SC is issued the fifth time this occurs.)
Major Cause
 Power of downstream unit is not turned on.
 Paper is not set properly (the paper does not reach the pick-up roller)
 1st lift motor is defective or disconnected.
 1st upper limit sensor is defective or 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
SCs occur.
2. Set a sheet on the tray generating the SC, and check tray operation.
From the first to fourth times, operator will be prompted to set the paper again.
A: The 1st lift motor does not rotate and the bottom plate is not lifted.
B: The 1st lift motor rotates but the bottom plate is not lifted.
C: The 1st lift motor rotates and the bottom plate is lifted, but the bottom plate does not stop at the
upper limit position.
Cause: A
 1st lift motor connector is disconnected/half-inserted, or defective.
 1st lift motor harness with the relay connectors is disconnected/half-inserted, or damaged.
 1st upper limit sensor connector is disconnected/half-inserted, or defective.
 1st upper limit sensor harness with the relay connectors is disconnected/half-inserted, or
damaged.
Cause: B
 Gear and coupling of the 1st lift motor is defective.
 Bottom plate rise mechanism parts in the paper feed tray are defective.
Cause: C