SC6xx: Communication
SM 6-67 D0CA/D0C9/D0C8/D0CB
Troubleshooting
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC672-20 D Controller Start Up Error
After the machine was powered ON, communication between the controller
and the operation panel was not established, or communication with controller
was interrupted after a normal startup.
Operation panel harness connection error
Check if the SC occurs by turning the main power OFF then ON. If the SC
occurs again, do the following steps. Check if the SC reoccurs by cycling the
power after each step.
1. Reconnect the USB cable and harness. (Reconnect both the operation
panel end and the controller end.)
2. Replace the USB cable and harness.
3. Replace the controller board.
4. Replace the operation panel.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
SC672-21 D Controller Start Up Error
After the machine was powered ON, communication between the controller
and the operation panel was not established, or communication with controller
was interrupted after a normal startup.
Controller Board is defective.
Check if the SC occurs by turning the main power OFF then ON. If the SC
occurs again, do the following steps. Check if the SC reoccurs by cycling the
power after each step.
1. Replace the controller board.
2. Replace the USB cable and harness.
3. Replace the operation panel.
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