Ricoh Pro 8300S - Perfect Binder: 24 V Check Signal Error 2; Sc750-21

1.SC Codes
322
was closed. (Relay circuit failed to go ON.)
Major Cause
 Front door L/R SW is defective.
 Master control board is defective.
Solution
 Reconnect the connector.
 Replace the front door L/R SW.
 Replace the master control board.
 Replace the sensor harness.
SC750-21
Error Name
Perfect Binder: 24V Check Signal Error 2
Pattern
D
Error Condition
Front door L/RWS and top cover sensor are closed, but the top cover switch is open, or the 24V2
monitoring signal of the master control board was OFF for more than 5 sec, (Top cover sensor or top
cover switch is defective.)
Major Cause
 Front door L/RSW defective
 Top cover switch defective
 Top cover sensor defective
 Master board defective
Solution
 Reconnect the connector.
 Replace the front door L/RSW.
 Replace the top cover switch
 Replace the top cover sensor.
 Replace the master control board.
 Replace the sensor harness.