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DIAGNOSTIC LED(S)
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LED
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Color
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Status
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Condition
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LED1
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Unidentified
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On
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See conditions in note below
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LED1
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Unidentified
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Off
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See conditions in note below
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LED2
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Red
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On
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Polarity reversed
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LED2
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Red
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Off
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Polarity normal
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LED3
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Yellow
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On
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Data is being transmitted/received
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LED3
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Yellow
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Off
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Data is not being transmitted/received
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LED4
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Green
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On
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Network connection is good
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LED4
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Green
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Off
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Network connection is broken
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Note: LED1 varies depending on model. Green (On: UTP link is good, Off: UTP link is broken); Red (On: Illegal connection, Off: Valid connection); or Orange (On: Line error alarm activated, Off: Line error alarm not activated).
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