SMC Networks SMC8926EM User Manual download pdf (Page 53)

A-1

Appendix A: Troubleshooting

Diagnosing Switch Indicators

Diagnosing Power Problems with the LEDs

The Power and RPU LEDs work in combination to indicate power status as follows.

Table A-1 Troubleshooting Chart

Symptom Action

Power LED is Off • Check connections between the switch, the power cord, and the wall

outlet.

• Contact your dealer for assistance.

Power LED is Amber • Internal power supply has failed. Contact your local dealer for

assistance.

Diag LED is Amber • Power cycle the switch to try and clear the condition.

• If the condition does not clear, contact your local dealer for assistance.

Stack Master LED is Flashing

Amber

• The stack has not completed its initial configuration. Wait a few

minutes for the process to complete.

• Check that all stacking cables are properly connected.

Stack Link LED is Flashing

Green/Amber

• The uplink/downlink has failed.

• For the indicated stack link, check that the stacking cables are properly

connected. Replace the stacking cable if necessary.

• Power cycle the switch to try and clear the condition.

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.

Table A-2 Power/RPS LEDs

Power LED RPU LED Status

Green Green Internal power functioning normally; RPU is present.

Green Amber Internal power functioning normally; RPU plugged in but faulty.

Green Off Internal power functioning normally; RPU not plugged in.

Amber Green Internal power faulty; RPU delivering power.

Off Off Both internal power and RPU unplugged or not functioning.

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SMC Networks SMC8926EM User Manual Page 53