Allied Telesis AT-MC104LH - Manual (Page 37)

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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:
ˆ 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.
ˆ If the unit is installed in an AT-MCR12 chassis, check that the unit is
fully seated in the slot.
ˆ Verify that the power outlet has power by connecting another device
to it.
ˆ Try using another power adapter of the same type that came with
your media converter.
If the LINK LED for the twisted pair port is OFF, do the following:
ˆ Check that the end-node connected to the port is powered ON and is
operating properly.
ˆ Check that the twisted pair cable is securely connected to the twisted
pair port on the media converter and on the remote end-node.
ˆ Make sure that the twisted pair cable does not exceed 100 meters
(328 feet) and that you are using Category 5 or better.
ˆ Verify that both end-nodes connected to the media converter are
operating at the same speed. Both must be operating at 100 Mbps.