Edge-Core ES3526VA-PoE, Installation Manual, Page: 53 / 74

A-1
Appendix A: Troubleshooting
Diagnosing Switch Indicators
Table A-1 Troubleshooting Chart
Symptom Action
PWR LED is Off • Internal power supply may be disconnected. Check connections between
the switch, the power cord and the wall outlet.
Diag LED is Amber • The system has detected a fault. Power cycle the switch to try and clear
the condition.
• If the condition does not clear, contact your dealer for assistance.
Diag LED is Flashing Amber • Check that all stacking cables are properly connected.
Stack LED is Flashing Green or
Amber
• The stack has not completed its initial configuration. Wait a few minutes
for the process to complete.
• If flashing continues, check that the Master Select button is pressed in on
only one switch.
• Check that all stacking cables are properly connected. Replace the
stacking cable if necessary.
Link/Act 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.
• If the switch is installed in a rack, check the connections to the
punch-down block and patch panel.
• 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.