Installation guide

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A Troubleshooting
Diagnosing LED Indicators
System Self-Diagnostic Test Failure
If the Pwr/Sys LED indicates a failure of the system power-on-self-test (POST), you
can use a console connection to view the POST results. The POST results may
indicate a failed component or help troubleshoot the problem. For more
information on connecting to the console port and using the CLI, refer to the CLI
Reference Guide.
Note a POST failure normally indicates a serious hardware fault that cannot be
rectified or worked around. If you encounter a POST failure, you should contact
your dealer for assistance.
Table 9: Troubleshooting Chart
Symptom Action
Pwr/Sys LED is Off
◆
Check connections between the PSU, the power cord and the wall
outlet.
◆
Contact your dealer for assistance.
Pwr/Sys LED is on Yellow
◆
Power cycle the switch to try and clear the condition.
◆
If the condition does not clear, contact your dealer for assistance.
Link/Act LED is Off
◆
Verify that the switch and attached device are powered on.
◆
Be sure the cable is plugged into both the switch and
corresponding device.
◆
Verify that the proper cable type is used and its length does not
exceed specified limits.
◆
Check the attached device and cable connections for possible
defects. Replace the defective cable if necessary.