Ricoh Pro 8300S - Sc753-69; Sc753-70

1.SC Codes
494
 Replace the timing sensor.
 Replace the master control board.
 Replace the sensor harness.
After the repairs, cancel the low performance mode, and then turn the power off/on.
SC753-69
Error Name
Perfect Binder: Cover registration sensor adjustment low value error
Pattern
B
Error Condition
The cover registration sensor A/D input value was higher than 3.0 to 3.5V, the A/D input value did not
enter the range 3.0 to 3.5V, even after cover registration sensor D/A output value output was lowered
0.1V.
Major Cause
 Cover registration sensor connector loose, broken, defective
 Sensor defective
 Master control board disconnected, defective
Solution
 Reconnect the connector.
 Replace the cover registration sensor.
 Replace the master control board.
 Replace the sensor harness.
After the repairs, cancel the low performance mode, and then turn the power off/on.
SC753-70
Error Name
Perfect Binder: Cover horizontal registration sensor (S) adjustment low value error
Pattern
B
Error Condition
The cover horizontal registration sensor (S) A/D input value was higher than 3.2 to 3.54V, and the A/D
input value did enter the range 3.2 to 3.54V, even sensor D/A output value output was lowered 0.04V.