Allied Telesis AT-MC1001SC/GS4 - Manual (Page 25)

AT-MC1001 Series Installation Guide
15
Testing and Troubleshooting the Media Converter
This procedure explains how to test and troubleshoot the media converter by
performing a link test. A link test will determine whether each port on the
media converter is successfully receiving a signal from the node connected to
it. You should perform this test immediately after you have installed the
media converter or whenever you are experiencing a problem with the unit. To
perform a link test, perform these steps:
1. Verify that the PWR LED on the media converter is green. If the LED is
OFF, do the following:
— If the unit is installed on the table, check to be sure that the power
adapter is securely connected to a power outlet and that the 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.
2. Turn ON the nodes (such as the hubs or switches) that are connected to
the ports on the media converter.
3. Set the Link Test Standalone/Back to Back button to either standalone or
back to back, depending on your topology. Refer to “Network Topologies”
on page 8 for a description of the standalone and back to back topologies.
4. Set the Link Test/MissingLink switch on the media converter to LNK TST
(UP) position. If you installed a back to back topology, be sure to set this
switch to LNK TST on both media converters.
5. The two LNK LEDs should be green. This indicates that the ports on the
media converter are receiving a signal from the nodes. If a LNK LED is
OFF, do the following:
— Verify that the node connected to the port is powered ON.
— Verify that the fiber optic cable is securely connected to the fiber optic
port.
— Verify that the appropriate type of fiber optic cable for the port is being
used. Refer to Table 3 on page 10 for cable specifications.
6. Set the Link Test/MissingLink switch on the media converter to M/L ON
(DOWN) position. The M/L ON position activates the MissingLink feature
on the media converter.