Allied Telesis AT-PC2002/POE - Manual (Page 55)

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Chapter 3
Troubleshooting
Here are suggestions on how to troubleshoot the AT-PC2002/POE Media
Converter.
Problem 1: The PWR LED is off.
Solutions: The media converter is not receiving power or the power
supply in the unit has failed. Try the following:
❒
Verify that the power cord is firmly connected to the media converter
and to the power source.
❒
Verify that the power source is operating properly by plugging a
different device into it.
❒
Verify that the power from the power source meets the operating
specifications of the media converter, listed in “Electrical
Specifications” on page 59.
Problem 2: The Link LED for the twisted pair port is off.
Solutions: Set the unit to the Link Test mode. If the Link LED for the
twisted pair port remains off, try the following:
❒
Verify that the twisted pair cable is securely connected to the port on
the media converter and to the port on the remote network device.
❒
Verify that the network device connected to the twisted pair port is
powered on and is operating properly.
❒
Try connecting another network device to the twisted pair port with a
different cable. If the twisted pair port is able to establish a link, then
the problem is with the cable or the other network device.
❒
Verify that you are using the correct type of cable and have not
exceeded the maximum distance. For the cable specifications, refer to
“Type of Cabling” on page 19.
❒
Verify the settings of DIP switches 1, 2 and 3. For information, refer to
Table 11 on page 44.
Problem 3: The Link LED for the fiber optic port is off.
Solutions: Set the unit to the Link Test mode. If the Link LED for the fiber
optic port remains off, try the following:
❒
Verify that the SFP module is firmly seated in the SFP slot.