LAN Power Systems LP2521 Installation And User Manual - page 16
Troubleshooting Checklist (continued)
3-3
Problem 3:
PoE Injector has Input and Output LEDs both lit (Green), End device is
being powered, but End device has no Data link from the Ethernet
Switch (is not responding to the Network).
Recommended Actions:
Verify Ethernet Switch port is good, turned on, and not being blocked for
traffic forwarding by either a hard set or soft set in Network
Management Software.
Check or change out patch cord from Switch port to PoE Injector,
making sure a Straight-through patch cord is being used and NOT a
Crossover cable.
Verify Cable link to End device is at least Category 5 and has a distance
of no more than 100 meters total length, including patch cables. If a
Cable testing unit is available, wring out the data link to make sure there
are no hidden breaks or damage to any of the cable’s 8 wires and that
all RJ-45 connection points along the data link are good.
Try using a different End device. If the new End device works and the
Data link works correctly, the problem is with the End device. Speak with
that Manufacturer for Technical support or return of the problem End
device.
If these actions have all been taken and you still are not getting a
functional Power and Data link to your End device, please call or write
to LAN Power Systems for additional support and troubleshooting ideas.