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PPENDIX
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ROUBLESHOOTING
Diagnosing Switch Indicators
Troubleshooting Chart
Symptom Action
Power LED is Off • Internal or redundant power supply has failed or is
disconnected.
• Check connections between the switch, the power cord,
the wall outlet.
• Contact SMC Tech Support.
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.
• 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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