![](/images/backgrounds/285749/hp-procurve-series-8212zl-users-manual-55006588x1.png)
Troubleshooting
Troubleshooting
Diagnosing with the LEDs
Diagnosing with the LEDsTable
1.Check in the table for the LED pattern you see on your switch
2.Refer to the corresponding diagnostic tip on the next few pages.
Table
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Power | Fault | Test | StatusModule perLED(one module) | Power perLED(one supply)power | Fan | LinkPort | Diagnostic |
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Off with | 1 | 1 | 1 | 1 | 1 | 1 | |
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power cord |
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plugged in |
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On | Prolonged | Prolonged | 1 | 1 | 1 | 1 | |
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| On | On |
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On | Blinking2 | Blinking2 | Off | 1 | 1 | 1 | |
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On | Blinking2 | Blinking2 | Blinking2 | 1 | 1 | Never On | |
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On | Blinking2 | Blinking2 | Blinking2 | 1 | 1 | On briefly, | |
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| then Off |
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On | Off | Off | Blinking2 | 1 | 1 | 1 | |
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On | Blinking2 | Blinking2 | Blinking2 | 1 | 1 | Blinking2 | |
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On | Blinking2 | Off | 1 | Blinking† | * | 1 | |
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On | Blinking2 | Off | 1 | 1 | Blinking† | 1 | |
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On | Off | Off | Off | 1 | 1 | Fast blinking3 | |
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On | Off | Off | On | 1 | 1 | Off with cable |
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| 11 |
1This LED is not important for the diagnosis.
2The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
3The fast blinking behavior is an on/off cycle once every 0.8 seconds, approximately