Diagnosing With The Leds - HP J3245A Installation And Configuration Manual

Troubleshooting

Diagnosing with the LEDs

Diagnosing with the LEDs
Most problems with the switch can be diagnosed using the LEDs on its front
panel. This section describes:
LED Pattern During Self-Test
Whenever the switch is powered on or reset, it performs a self-diagnostic test.
During the self-test:
1.
2.
When the self-test completes successfully, the LEDs go into their normal
operational states. If a switch hardware fault exists, the switch will not
complete self-test. This will be indicated by the Fault LED.
The tables on the following pages list the switch's LEDs, their possible states,
and diagnostic tips to resolve any error conditions.
LED Error Indications
Figure 9-1. System and Port LEDs
9-2
The normal LED pattern when the switch is being self-tested
The LED patterns that indicate error conditions on the switch
All LEDs turn on momentarily, then all but the Power, Self-test, and Fault
LEDs turn off.
The Power LED remains on; the Self Test and Fault LEDs remain on for
less than one minute.
System LEDs
Port LEDs