Checking The Leds; Troubleshooting The Network Jack - 3Com 3CNJ100 Installation Manual

Installation Guide

Checking the LEDs

You can verify the Network Jack installation by checking the LEDs.
LED Description
On—The Network Jack is connected to the network
I
and a link has been established.
Off—There is no connection to the network.
I
(LAN)
On—The Network Jack is receiving power (local or
I
via the network).
Off—The Network Jack is not receiving power.
I
(Power)

Troubleshooting the Network Jack

If you encounter problems with the Network Jack:
Verify the Network Jack is receiving power by viewing the Power
I
LED (it should be lit). If the Power LED is not lit, make sure the:
Power Over Ethernet dip switches are set correctly (for
I
either Capacitive Power Discovery Process 24V or 48V
or IEEE 802.3af), if your network supports
Power Over Ethernet. See "Setting the Power Over
Ethernet Dip Switches" on page 13 for instructions.
24