Table of Contents
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Diagnosing Switch Indicators
Symptom
Power LED is Off
Power LED is Flashing
Link LED is Off
T
ROUBLESHOOTING
Troubleshooting Chart
Action
•
Internal or redundant power supply has failed or is
disconnected.
•
Check connections between the switch, the power
cord, the wall outlet, and the RPU if you are using one.
•
If the switch is installed in a rack, check the
connections to the punch-down block and patch panel.
•
Contact SMC Technical Support.
•
The switch is either downloading firmware or running
the Power-On Self-Diagnostics Test (POST). If this
LED does not stop flashing, then POST has failed, and
you should contact SMC Technical Support.
•
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.
A
PPENDIX
A
A-1
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