Checking That The Tr-In-Fe Module Is Installed Correctly; Checking The Physical Connections - 3Com SUPERSTACK II 2000 TR Manual

Check that the power supply is plugged into the
a
device using a power outlet that is known to be
working or that the RPS is powered.
Check that the main power supply switch on the
b
wall is set to the ON position.
Check and, if necessary, change the fuse on the
c
Switch or plug. See the user guide that accompa-
nies your Switch device for details about fuses.
Replace the power cable with a cable known to be
d
working.
Contact 3Com Technical Support.
e
Checking that the TR-in-FE Module is Installed
Correctly
Power up the Switch and check that the Downlink
Status LED on the front of the Switch is lit Green.
If the MGMT LED is not lit Green, remove and then
re-install the TR-in-FE module.
You can confirm that the TR-in-FE Module is installed
correctly by accessing the local management screens
or the LCD panel. If the TR-in-FE Module is installed
correctly, the TR-in-FE Configuration option appears
in the Main Menu.
If the TR-in-FE Configuration option does not appear,
It could be that the TR-in-FE Module is still initializing.
If the TR-in-FE Module is still initializing, the MGMT
LED flashes GREEN.

Checking the Physical Connections

This section assumes that the TR-in-FE Module is cor-
rectly installed.
Check that the Link Status LED on the TR-in-FE
Module is lit GREEN. If the LED is not lit, there is a
problem with the physical connection. Follow the
troubleshooting information below:
Ensure that both devices are powered up, and that
a
the ports at both ends of the link are enabled.
Ensure that the cable is securely connected to the
b
port at both ends of the link.
If using fiber, check each end of the cable to
c
ensure that each of the fiber connectors is correctly
connected. If your cable connectors can be
reversed, you may need to reverse the TX and RX
cable connectors at one end of the link.
If using copper, the TX and RX pairs may need to
d
be swapped. This requires changing the jumper
setting on the module. See "Jumper Settings."
Ensure that the fiber connection is not broken.
e
Some cable connectors have been designed so that
they cannot be fitted incorrectly. Never use excessive
force to connect cables.
If you are running full duplex, make certain that
f
the Fast Ethernet switch supports this mode. A
repeater will not support full duplex whereas a
switch such as the SuperStack 3000 will.
Remove any objects obstructing the cable and
g
straighten out any kinks in the cable.
Post-Installation Checks 3-5