Allied Telesis AT-MC1005/4 - Manual (Page 26)

Troubleshooting
16
If the LNK LED for the fiber optic port is OFF, do the following:
❑
Verify that the end-node connected to the port is ON and is operating
properly.
❑
Check that the fiber optic cable is securely connected to the fiber optic
port on the media converter and on the remote end-node.
❑
Check to be sure that the end-node connected to the port is operating
at 1000 Mbps.
❑
Make sure that the fiber optic port on the remote end-node is
operating in full-duplex.
❑
Make sure that the fiber optic cable connected to the media converter’s
receiver port (RX) is connected to the end-node’s transmitter port (TX)
and that the media converter’s transmitter port (TX) is connected to
the end-node’s receiver port (RX).
❑
Test the attenuation on the fiber cable to ensure that it does not
exceed acceptable values.
❑
Verify that you are using the appropriate type of fiber optic cables and
that you have not exceeded the maximum operating distance. For
cable types and operating distances, refer to Table 4 on page 10.
❑
Check that the operating specifications (e.g., wavelength and
maximum operating distance) of the fiber optic port on the end-node
are compatible with the operating specifications of the fiber optic port
on the media converter. For the fiber optic port specifications, refer to
“Fiber Optic Port Specifications” on page 18.
If you are still experiencing problems after testing and troubleshooting the
installation, contact Allied Telesyn Technical Support for assistance. Refer to
“Contacting Allied Telesyn Technical Support” on page viii or visit our web
site at www.alliedtelesyn.com for support information.