User's Manual

AN-30e
user manual
70-00035-01 Proprietary Redline Communications © 2004 November 2004
Page 25 of 104
Link/Act LED
The Link/Act LED lights solid green when the Local Area Network (LAN)
connection is established, and there is no traffic. The Link LED flashes when the
Local Area Network (LAN) connection is established and traffic is detected.
The Link/Act LED is functioning properly and traffic is detected. If the LED is off, it
may indicate one of the problems listed in the following table:
Table 5: Ethernet Link/Act Diagnostics
Symptom Possible Problem Solution
Poor cable connection
between terminal and
computer/server or between
terminal and switch/router.
Carefully check all cable
connections.
Wrong type of Ethernet cable
between terminal LAN port
and host.
If the terminal LAN port is
connected to a host, then
ensure a straight-through cable
is used. Otherwise, to connect
the terminal to a switch or
router, ensure a crossover
cable is used.
The auxiliary Network
equipment may be
malfunctioning.
Repair or replace faulty
terminals.
No Ethernet Link
(Link/Act LED off)
Processor malfunction. Try short reset or long reset.
100 LED
The 100 LED lights solid green when the Ethernet port is operating at 100 Mb/s. The
LED is not illuminated when the port is operating in 10 Mb/s mode.
Table 6: Ethernet 100 Diagnostics
Symptom Possible Problem Solution
Ethernet connection manually
set for 10Base-T operation.
Change Ethernet Mode setting
to Auto or 100 in the System
Configuration web screen.
Ethernet Link 100
LED off
The connected Ethernet
device may be operating at
10Base-T.
If the terminal LAN port is
connected to a host computer
or server operating at 10Base-
T, you may have to change the
settings for that device.
FD/Col LED
The FD/Col LED lights solid green when the LAN connection is operating in Full
Duplex mode and flashes when collisions are detected on the Ethernet port.
When connected to a hub, it is typical for packet collisions to occur intermittently. On
a Half-Duplex link, there are collisions. Some causes are listed in the following table.