Allied Telesis AT-MC14 - Manual (Page 25)

15
Chapter 3
Troubleshooting
Follow the guidelines below to test and troubleshoot the installation in the
event a problem occurs.
If the PWR LED is OFF, do the following:
q
If the unit is installed on a desktop, check to be sure that the power
adapter is securely connected to a power outlet and that the power
adapter cable is securely connected to the back of the media converter.
q
If the unit is installed in an AT-MCR12 chassis, check that the unit is
fully seated in the slot.
q
Verify that the power outlet has power by connecting another device
to it.
q
Try using another power adapter.
If the LNK LED for the twisted pair port is OFF, do the following:
q
Check that the end-node connected to the port is powered ON and is
operating properly.
q
Check that the twisted pair cable is securely connected to the twisted
pair port on the media converter and to the end-node.
q
Make sure that the twisted pair cable does not exceed 100 meters (328
feet) and that you are using Category 3 or better cable.
q
Verify that the end-node is operating at 10 Mbps and half- or
full-duplex mode.