Diagnosing With The Leds - ProCurve 1800-8G Installation And Getting Started Manual

Troubleshooting

Diagnosing With the LEDs

Problem
Switch fails Power On
Self Test (POST)
Link light does not light
when a cable is
connected.
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
Power
Off with power
adapter plugged in
On
On
* This LED is not important for the diagnosis.
4-2
Resolution
Troubleshoot using the LEDs. See "Diagnosing With
the LEDs" on page 4-2
Look for loose or obviously faulty connections. If
they appear to be OK, make sure the connections
are snug. If that does not correct the problem, try a
different cable.
Fault
*
Prolonged on OR
never turns on
Off
Port Link
*
*
Off with cable
connected
Diagnostic Tips
➊
➋
➌