HP ProCurve 5400zl User Manual Page 72

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  • TROUBLESHOOTING
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5-4
Troubleshooting
Diagnosing with the LEDs
Troubleshooting
Diagnosing with the LEDs
Table 5-1 shows LED patterns on the switch and the switch modules that
indicate problem conditions.
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 5-1. LED Error Indicators
LED Pattern Indicating Problems
Diagnostic
Tips
Power
Fault
Test
Module Status
(one LED per
module)
Power
(one LED per
power supply)
Fan
Port Link
Off with
power cord
plugged in
1 1 111 1
On Prolonged
On
Prolonged
On
111 1
On Blinking
2
Blinking
2
Off
11 1
On Blinking
2
Blinking
2
Blinking
2
11
Never On
On Blinking
2
Blinking
2
Blinking
2
11
On briefly,
then Off
On Off Off Blinking
2
11 1
On Blinking
2
Blinking
2
Blinking
2
11
Blinking
2
On Blinking
2
Off
1
Blinking
*
1
On Blinking
2
Off
11
Blinking
1
On Off Off Off
11
Fast blinking
3
On Off Off On
11
Off with cable
connected
1
This LED is not important for the diagnosis.
2
The blinking behavior is an on/off cycle once every 1.6 seconds, approximately.
3
The fast blinking behavior is an on/off cycle once every 0.8 seconds, approximately
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