SMC Networks TIGERSTACK II SMC8950EM - Manual (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.