Motorola 82543 用户手册

A-2

Gigabit Ethernet/82543 PMC Installation and Use

A speed/status LED flashes 
green and does not change to 
solid green when the cable is 
connected.

The cable connecting to the 
PMC or the PMC connection 
is faulty.

Verify the integrity of the 
cable and cable connection. If 
the cable is defective, replace 
it. Verify that the cable has 
been connected between 
transmit to receive and receive 
to transmit.
Note: Point-to-point system 
connections require a cross-
over cable.

The speed/status LED flashes 
green and does not change to 
solid green when the cable is 
connected.

The PMC is faulty.

For 10 Mb/s and 100 Mb/s 
connections, connect a 
loopback connector and 
observe the results:
If the speed/status LED 
changes to solid green (does 
not flash), a problem exists 
with the cable or the 
concentrator. 
If the speed/status LED 
flashes green, replace the 
PMC.
If no loopback connector is 
available, test the 
concentrator. If the 
concentrator is functional, 
replace the PMC.

The 1000 Mb/s mode has been 
selected, but the 1000 Mb/s 
LED is not lit.

A carrier detect (CD) signal 
could not be detected because 
the network cable is loose, 
disconnected, or connected to 
a device that does not support 
1000 Mb/s mode.

Check that the network cable 
is connected to the network 
port, that the connection is 
secure, and that the connected 
device supports 1000 Mb/s 
mode.