Appendix A: Troubleshooting
Diagnosing Switch Indicators
Table A-1. Troubleshooting Chart
Symptom | Action |
PWR LED is Off | •Check connections between the switch, the power cord and |
| the wall outlet. |
| •Contact your dealer for assistance. |
PWR LED is | Internal power supply has failed. Contact your local dealer for |
Amber | assistance. |
Diag LED is | •Power cycle the switch to try and clear the condition. |
Amber | •If the condition does not clear, contact your dealer for |
| assistance. |
Stack LED is | • The stack has not completed its initial configuration. Wait a |
Flashing Amber | 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. |
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. |
| • If the switch is installed in a rack, check the connections to |
| the |
| • 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. |
Power and Cooling Problems
If the power indicator does not turn on when the power cord is plugged in, you may have a problem with the power outlet, power cord, or internal power supply. however, if the unit powers off after running for a while, check for loose power connections, power losses or surges at the power outlet. If you still cannot isolate the problem, the internal power supply may be defective.
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