Appendix A: Troubleshooting; Diagnosing Switch Indicators; Diagnosing Power Problems With The Leds; Table A-1 Troubleshooting Chart - SMC Networks TIGERSTACK II SMC8926EM Installation Manual

Appendix A: Troubleshooting

Diagnosing Switch Indicators

Symptom
Power LED is Off
Power LED is Amber
Diag LED is Amber
Stack Master LED is Flashing
Amber
Stack Link LED is Flashing
Green/Amber
Link LED is Off

Diagnosing Power Problems with the LEDs

The Power and RPU LEDs work in combination to indicate power status as follows.
Power LED RPU LED
Green Green
Green Amber
Green Off
Amber Green
Off Off

Table A-1 Troubleshooting Chart

Action
• Check connections between the switch, the power cord, and the wall
outlet.
• Contact your dealer for assistance.
• Internal power supply has failed. Contact your local dealer for
assistance.
• Power cycle the switch to try and clear the condition.
• If the condition does not clear, contact your local dealer for assistance.
• 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.
• 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.
• 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

Status
Internal power functioning normally; RPU is present.
Internal power functioning normally; RPU plugged in but faulty.
Internal power functioning normally; RPU not plugged in.
Internal power faulty; RPU delivering power.
Both internal power and RPU unplugged or not functioning.
A-1