3
T
ROUBLESHOOTING
I
NSTALLATION
P
ROBLEMS
This chapter explains how to use troubleshooting techniques
and 3Com diagnostic programs to isolate and solve problems
that may occur when you install the 3C900B NIC.
If you have trouble installing your 3C900B NIC, follow
these basic troubleshooting tips before you run the
diagnostic programs.
CAUTION:
Before inserting or removing the NIC from
the PC, turn the PC power off.
■
Check the NIC installation by reviewing Chapter 1.
Make sure that the NIC is seated correctly in the slot.
Check for specific hardware problems, such as broken
traces or loose or broken solder connections.
■
Inspect all cables and connections. Check the length
and rating of the cable. Make sure that the cable
complies with 10BASE-T recommendations.
■
Make sure that you are running the latest BIOS for your
PC. If your BIOS has not been upgraded in the previous
12 months, contact your PC manufacturer to obtain the
current version of your BIOS software.
■
Replace the failed NIC with a working NIC and run the
diagnostic tests again, using the same option settings
as those used on the failed NIC. If the working NIC
passes all tests, the original NIC is probably defective.
For information on product repair, see Appendix D.
Running Diagnostic Programs
This section provides information about how to run
3Com diagnostic programs to resolve problems that
may occur during NIC installation. If you are running
DOS, Windows 3.x, Windows for Workgroups, or
Windows NT 3.51, use the 3Com DOS diagnostic program.
If you are running Windows 95 or Windows NT 4.0, use
the 3Com NIC Diagnostics program.