Installation manual

AT-1500 Plug and Play

Experiment with Possible Solutions

This chapter provides the common factors to check in

troubleshooting. It is by no means exhaustive since there are too

many environmental factors to take into account.

The first rule of troubleshooting is to isolate the problem. As you

experiment, vary only one factor at a time. Substitute known

good equipment and see if the problem persists or is eliminated.

❑

Do not overlook the obvious—make sure the card is seated

in the computer and that the cables and connectors are

securely attached.

❑

If the LNK indicator does not light with UTP or fiber

media, make sure the cabling is intact and connected to a

functioning network port.

❑

If the LNK indicator lights on a 10BASE-T segment, but

data transfer is slow, collision-prone, or non-existent, verify

that your cable is of level 3, 4, or 5 (see Chapter 7, Important

10BASE-T Cable Considerations). Level 1 and 2 voice-

quality cable will not work properly.

If the cable is more or less round in section, you probably

have data grade cable, correctly paired, and no transmission

problems. If, however, the cable appears flat in section (as

“Silver Satin” telephone-type cable) you probably have

voice-grade cable and transmission problems. If it looks like

telephone cable, double-check it.

❑

If the computer is on a 10BASE2 segment, make sure the

cable is connected with T-connectors, terminated at the

ends with 50

Ω

terminators, and grounded in only one place.

❑

If you suspect the network adapter card is not working

properly, disconnect the computer from the network and

run CardAssistant diagnostics after rebooting with no

drivers loaded.