Dell Dimension L___cx - Manual (Page 63)

support.dell.com Basic Troubleshooting 4-9 9
2. Check the network connections.
a. Check the network connector for physical damage.
b. Ensure that both ends of the network cable are inserted properly.
Press one end of the unshielded twisted pair (UTP) Ethernet cable into the
network connector until the cable snaps securely into place. Connect the
other end of the cable to an RJ45 jack wall plate or to an RJ45 port on a UTP
jack wall plate or to an RJ45 port on a UTP
concentrator or hub, depending on your network configuration.
c. Replace the patch cable or network cable from the wall jack to the computer.
d. If replacing the patch cable or network cable does not solve the problem, try
moving the computer to a known working location on the network.
3. Reinstall the network drivers that came with your network card (refer to the doc-
umentation that came with the card).
4. If your computer has a Dell-supported network card installed, run the Network
Interface test group as described in “Running the Dell Diagnostics” found later
in this chapter.
If the network card is not detected, refer to the documentation that came with
the card.
If the network card does not pass all the tests, refer to Chapter 7, “Getting Help,” 7, “Getting Help,”
for instructions on obtaining technical assistance.
Network Cable Requirements
NOTICE: To avoid line interference, voice and data lines must be in
separate sheaths.
Observe the following cabling restrictions for 10BASE-T and 100BASE-TX networks: T and 100BASE-TX networks:
•
For 10BASE-T networks, use Category 3 or Category 5 wiring and connectors. connectors.
•
For 100BASE-TX networks, use Category 5 wiring and connectors.
•
The maximum cable run length (from a computer system to a concentrator or maximum cable run length (from a computer system to a concentrator or
hub) is 100 meters (m) (328 feet [ft]).
•
The maximum number of systems (not counting concentrators or hubs) on a
network is 1024.
•
For 10BASE-T networks, the maximum number of daisy-chained concentrators or
hubs on one network segment is four.
Check with your network administrator for specific information about your network.
Running the Dell Diagnostics
Whenever a major component or device in your computer system does not function
properly, run the Dell Diagnostics provided on the Dell Dimension ResourceCD
CD to