SERVICE CALL CONDITIONS
SM 4-53 B234/B235/B236/D101/D102/D103
Trouble-
shooting
Important: The SC795-** series SC codes apply to the Perfect Binder
D391.
Master-to-Slave Board Communication Errors
Master/Slave Control Board Communication Error 1
Master control board could not
communicate with the slave
control board for over 5 sec. and
issued the communication alarm.
• Slave board connector loose,
broken, defective
• Slave board defective
Master/Slave Control Board Communication Error 2
Slave control board could not
communicate with the master
control board for over 5 sec. and
issued the communication alarm.
• Received data corrupted
• Cycle the machine power off/on
• Slave control board defective
Download Error
SC795-1 A
The version of the slave control
board could not be detected at
power on. Communication
between the master and slave
control boards is not possible if the
slave board firmware cannot be
written to the board.
• Slave board firmware not written
• Cycle the machine power off/on
• Slave control board defective
Master-to-Relay Board Communication Error
The master control board could not
communicate with the relay control
board.
• Master control board, relay control
board connectors loose, broken,
defective
• Master control board defective
• Relay control board defective
Download Error
SC795-2 A
The version of the master control
board could not be detected at
power on
• Master control board firmware not
written
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