Ricoh Pro 8300S - Perfect Binder: 24 V Check Signal Error 1; Perfect Binder: Software Matching Error; Sc750-19; Sc750-20

1.SC Codes
321
Error Condition
 No response to the specified command within the specified time.
 There was an overflow in memory where information for paper feed is stored (master control board
detection).
Major Cause
 Error in communication from the inserter
 Connector loose, damaged, or defective.
Solution
 Reconnect the connector.
 Replace the master control board.
 Replace the inserter board.
 Replace the harness.
SC750-19
Error Name
Perfect Binder: Software Matching Error
Pattern
D
Error Condition
The IDs of the master, slave, cutter, inserter, and relay sofware do not match.
Major Cause
Software write failure
Solution
Download the software.
SC750-20
Error Name
Perfect Binder: 24V Check Signal Error 1
Pattern
D
Error Condition
The 24V1 monitor signal of the master control board did not go off even though the front door switch