Ricoh Pro 8300S - Sc753-64; Sc753-65

1.SC Codes
491
 Slave control board defective
Solution
 Reconnect the connector.
 Clean the sensor.
 Replace the cover horizontal registration sensor (L)
 Replace the slave control board.
 Replace the sensor harness.
After the repairs, cancel the low performance mode, and then turn the power off/on.
SC753-64
Error Name
Perfect Binder: Signature exit sensor adjustment high value error
Pattern
B
Error Condition
The signature exit sensor A/D input value was lower than 3.2 to 3.54V, the A/D input value did not go
higher than 3.2 to 3.54V, even after cover registration sensor output value output was higher than 3.7V.
Major Cause
 Signature exit sensor connector loose, broken, defective
 Sensor defective
 Slave control board disconnected, defective
Solution
 Reconnect the connector.
 Replace the signature exit sensor.
 Replace the slave control board.
 Replace the sensor harness.
After the repairs, cancel the low performance mode, and then turn the power off/on.
SC753-65
Error Name
Perfect Binder: LE detect sensor adjustment high value error
Pattern
B