Installation guide

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A Troubleshooting
Diagnosing LED Indicators
System Self-Diagnostic Test Failure
If there is 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 Management 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.
Power Problems
If the power indicator does not turn on when the Ethernet cable is plugged in, you
may have a problem with the power outlet, power cord, or PoE power injector.
However, if the unit powers off after running for a while, check for loose power
connections, power losses or surges at the power outlet. If you still cannot isolate
the problem, the PoE power injector may be defective.
Table 7: Troubleshooting Chart
Symptom Action
Power LED is Off
◆
Check connections between the PoE Power Injector, the power
cord and the wall outlet.
◆
Contact your dealer for assistance.
LAN LED is Off
◆
Verify that the AP and attached PoE Power Injector are powered
on.
◆
Be sure the cable is plugged into both the AP and PoE Power
Injector.
◆
Verify that the proper cable type is used and its length does not
exceed specified limits.
◆
Check the cable connections for possible defects. Replace the
defective cable if necessary.