3-2
Troubleshooting Checklist (continued)
IF “OUT” LED on PoE Injector is still not lit (Green), continue with these
steps.
Bring End device to be powered into the same room (wiring closet)
where you are working and connect it directly to the patch cable already
attached to “OUT” RJ-45 Connector on PoE Injector. If “OUT” LED lights
up (Green) and power light is now lit on the End device, the PoE Injector
is working fine.
The problem must be then in the Cable link going out to where the End
device was first located. PoE requires the use of all 8 wires in the LAN
Data cable. It is possible not all 8 wires are available or terminated in
that particular link in the Structured Cabling System. Try using a
different Cable link to a nearby or similar location and see if the PoE
Injector can now power the End device remotely using that Cable link.
OR the patch cord from the end of the Cable link to the End device
could be bad, try replacing with another known good patch cable.
If You have the End device to be powered connected locally to the PoE
Injector, with known good patch cords, and the “OUT” LED on the PoE
Injector does not light up and power the End device, check the
following. Verify that the Make and Model of End device you are trying
to power is actually made from the Manufacturer to accept PoE. If so,
verify that the style of PoE (protocol) that the End device wants to
receive is the same style that the PoE Injector is putting out.
Example: the LP2521 is putting out IEEE 802.3af PoE. The End device
must be built ready to accept IEEE 802.3af PoE. Some products in the
marketplace are not, some accept other PoE styles like legacy Cisco
CDP style PoE (see Support section, Compatible Products listing at
www.lan-power.com). Others need 24v or 12v or 5 volts input. LAN
Power Systems has Voltage Adapters and Power Pin and Data cables
available for these low voltage PoE applications (see Products section
of LAN Power Website at
www.lan-power.com
).
