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Diagnosing Switch Indicators
Symptom
Power LED is Off
Link LED is Off
Power and Cooling Problems
If the power indicator does not turn on when the power cord is plugged in,
you may have a problem with the power outlet, power cord, or internal
power supply. However, if the unit powers off after running for a while,
check for loose power connections, power losses or surges at the power
outlet, and verify that the fans on the unit are unobstructed and running
prior to shutdown. If you still cannot isolate the problem, then the internal
power supply may be defective.
T
ROUBLESHOOTING
Troubleshooting Chart
Action
• Internal power supply is disconnected.
• Check connections between the switch, the power cord,
and the wall outlet.
• Contact your local dealer for assistance.
• Verify that the switch and attached device is 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 adapter on the attached device and cable
connections for possible defects. Replace the defective
adapter or cable if necessary.
A
PPENDIX
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