No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
670
CTL
D
Engine start up error
The BICU fails to respond within the prescribed time when the machine is turned
on.
• Connections between BICU and controller board are loose, disconnected,
or damaged.
1. Replace the BICU.
2. Replace the controller board.
No. Type Details (Symptom, Possible Cause, Troubleshooting Procedures)
672
CTL
D
Controller start up error
After the machine is powered on, the communication between the controller and
the operation panel is not established, or communication with the controller is
interrupted after a normal startup.
After startup reset of the operation panel, the attention code (FDH) or the attention
acknowledge code (FEH) is not sent from the controller within 30 seconds.
After the controller issues a command to check the communication line with the
controller at 30-second intervals, the controller fails to respond twice.
• Controller stalled
• Controller board installed incorrectly
•
Controller board defective
• Operation panel connector loose or defective
• The controller is not completely shut down when the main switch is turned off.
1. Check the setting of SP5-875-001. If the setting is set to "1 (OFF)", change it to
"0 (ON)".
6. Troubleshooting
670
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