3Com 3C905C-TX-M User Manual page 75

74 C
HAPTER
LED State
100 LNK On
(link)
Off
Blinking
ACT Blinking
(activity)
Steady
Off
If a LNK LED indicates a problem, check the following:
1 Ensure that your network hub or switch and the cable
connecting to your NIC comply with the specifications
appropriate for your network connection.
2 Ensure that the hub or switch is powered on.
7: R NIC D
UNNING IAGNOSTICS
Meaning
If drivers are installed,
the 100BASE-TX
or 100BASE-FX
connection is active.
If drivers are not
installed, the NIC is
receiving power.
Something is
preventing the
connection between
the NIC and the hub
or switch.
The cable polarity
is reversed. Try a
different network
cable or contact your
system administrator.
Network traffic
is present.
Heavy network traffic
is present.
No network traffic
is present.
Connector
RJ-45 AUI BNC
Yes N/A N/A
Yes Yes Yes
Yes N/A N/A
Yes N/A N/A
Yes Yes Yes
Yes Yes Yes
Yes Yes Yes
SC ST
Yes N/A
Yes N/A
Yes
N/A N/A
Yes Yes
Yes Yes
Yes Yes