Chapter 7: Troubleshooting
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fluctuates above or below the approved operating range.
Use the SHOW SYSTEM ENVIRONMENT command in the
Privileged Exec mode to verify that the fan is operating correctly.
Verify that the location of the switch allows for adequate airflow.
The unit will shut down if it is overheating.
Problem 6: The Switch ID LED on the front of the switch is flashing the
letter “F.”
Solutions: One or more of the following problems has occurred:
A cooling fan has failed.
The internal temperature of the switch has exceeded the normal
operating range and the switch might have to shut down.
Contact your Allied Telesis sales representative for assistance.
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