Allied Telesis AT-MC103ST/FSx - Manual (Page 27)

15
Chapter 3
Troubleshooting
Troubleshooting Guidelines
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:
❑ 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.
❑ If the unit is installed in an AT-MCR12 chassis, check that the unit is
fully seated in the slot.
❑ Verify that the power outlet has power by connecting another device
to it.
❑ Try using another power adapter of the same type that came with your
media converter.
If the LNK LED for the twisted pair port is OFF, do the following:
❑ Check that the end-node connected to the port is powered ON and is
operating properly.
❑ Check that the twisted pair cable is securely connected to the twisted
pair port on the media converter and on the remote end-node.
❑ Make sure that the twisted pair cable does not exceed 100 meters (328
feet) and that you are using Category 5 or better.
❑ Verify that both end-nodes connected to the media converter are
operating at the same speed. Both must be operating at either 100
Mbps.
❑ Make sure no configuration changes have been made. If so, you must
reset the media converter by powering OFF and then powering ON the
unit.