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Diagnosing With The Leds - HP ProCurve 4000M Installation Manual

Hp procurve 4000m: install guide
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Troubleshooting

Diagnosing with the LEDs

Diagnosing with the LEDs
Tables 3-1 shows LED patterns on the switch and the switch modules that
indicate problem conditions.
1.
2.
Table 3-1.
Off with
*
power
cord
plugged
in
On
Prolonged
Prolonged
On
On
Flashing
Flashing
On
Flashing
On
Off
On
Flashing
On
Flashing
On
Off
* This LED is not important for the diagnosis.
The flashing behavior is an on/off cycle once every 1.6 seconds, approximately.
3-4
Check in the table for the LED pattern that you see on your switch
Refer to the corresponding diagnostic tip on the next few pages.
LED Error Indicators
LED Pattern Indicating Problems
*
*
Prolonged
On
On
Flashing
Off
Flashing
Flashing
Off
Off
Flashing
Off
Off
Off
Off
Off
Off
On
*
*
*
*
*
*
*
*
*
*
*
*
*
*
Flashing
*
*
*
Flashing
*
*
Diagnostic
Tips
*
*
*
*
*
*
*
Off with
cable
connected

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