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A TROUBLESHOOTING
DIAGNOSING LED INDICATORS
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. If you still
cannot isolate the problem, the internal power supply may be defective.
Table 11: LED Indicators
LED Status Action
Power LED is Off
◆ Check connections between the switch, the power cord, and the
wall outlet.
◆ Contact your dealer for assistance.
Diag LED is
Flashing Amber
◆ Power cycle the switch to try and clear the condition.
◆ If the condition does not clear, contact your dealer for
assistance.
Link 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.
◆ If the switch is installed in a rack, check the connections to the
punch-down block and patch panel.
◆ 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.
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