Troubleshooting
Diagnosing With the LEDs
Problem | Resolution |
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Switch fails Power On | Troubleshoot using the LEDs. See “Diagnosing With |
Self Test (POST) | |
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Link light does not light | Look for loose or obviously faulty connections. If |
when a cable is | they appear to be OK, make sure the connections |
connected. | are snug. If that does not correct the problem, try a |
| different cable. |
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Diagnosing With the LEDs
LED patterns on the switch may indicate a problem condition.
1.Check in the table for the LED pattern that you see on your switch.
2.Refer to the corresponding diagnostic tip on the next few pages.
LED Pattern Indicating Problems |
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Power | Fault | Port Link | Diagnostic Tips |
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Off with power | * | * | ➊ |
adapter plugged in |
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On | Prolonged on OR | * | |
| never turns on |
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On | Off | Off with cable | ➌ |
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| connected |
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* This LED is not important for the diagnosis. |
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