3Com 2000 TR manual Checking that the TR-in-FE Module is Installed Correctly

aCheck that the power supply is plugged into the device using a power outlet that is known to be working or that the RPS is powered.

bCheck that the main power supply switch on the wall is set to the ON position.

cCheck and, if necessary, change the fuse on the Switch or plug. See the user guide that accompa- nies your Switch device for details about fuses.

dReplace the power cable with a cable known to be working.

eContact 3Com Technical Support.

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.

Post-Installation Checks 3-5

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:

aEnsure that both devices are powered up, and that the ports at both ends of the link are enabled.

bEnsure that the cable is securely connected to the port at both ends of the link.

cIf using fiber, check each end of the cable to 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.

dIf using copper, the TX and RX pairs may need to be swapped. This requires changing the jumper setting on the module. See “Jumper Settings.”

eEnsure that the fiber connection is not broken.

Some cable connectors have been designed so that they cannot be fitted incorrectly. Never use excessive force to connect cables.

fIf you are running full duplex, make certain that the Fast Ethernet switch supports this mode. A repeater will not support full duplex whereas a switch such as the SuperStack 3000 will.

gRemove any objects obstructing the cable and straighten out any kinks in the cable.