Troubleshooting; Diagnosing Switch Indicators - SMC Networks 6900FSC Installation Manual

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.
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