3Com (R) Corporation
EtherDisk (R) Diskette for
The 3C5X9 EtherLink III NIC Family
Troubleshooting
If the NIC diagnostic tests fail, the NIC might not be defective. Check
the following:
1. Make sure that the NIC is completely seated in its slot. Review
the installation instructions in the appropriate NIC guide.
2. If you are running the Group 2 test, make sure that the NIC is
securely connected to a loopback plug or to a properly cabled network.
3. If you are running the Group 3 test, make sure that the NIC is
securely connected to a properly cabled network and an echo server is
set up on the network.
4. If you are configuring the I/O base address, interrupt request level,
or boot PROM base address, make sure that the settings you choose for
these parameters do not conflict with any other peripheral or software
program installed in the computer. For a list of system resources
commonly used by other peripherals, select "Commonly used interrupt
and I/O base addresses" from the "Configuration and Diagnostic"
submenu.
5. Make sure that the configuration setting for the transceiver type is
correct.
6. Running Group 2 tests while connected to an active network can cause
intermittent failures. These failures can be avoided by using a
loopback plug or by connecting to an inactive network on which only
the computer being tested is operating.
7. If you installed a twisted-pair NIC, check the LED on the backplate
of the adapter. The LED should be checked only during or after the
diagnostic tests have been run. The LED will be on when there is a
proper connection between the NIC and the hub. The LED will flash if
the polarity of the connection is swapped.
8. The slot in the computer may be defective. Install the NIC in
another slot and run the tests again.
9. The computer in which the NIC is installed might be defective.
Install the NIC in a known functioning computer and run the tests
again.
10. The loopback plug you are using might be defective. Try a different
loopback plug.
11. Replace the failed NIC with a known working NIC, with the same
configuration. If the second NIC fails, something is probably wrong
with the computer, not with the NIC.
(%VER Troubleshooting v5.0a)
Download Driver Pack
After your driver has been downloaded, follow these simple steps to install it.
Expand the archive file (if the download file is in zip or rar format).
If the expanded file has an .exe extension, double click it and follow the installation instructions.
Otherwise, open Device Manager by right-clicking the Start menu and selecting Device Manager.
Find the device and model you want to update in the device list.
Double-click on it to open the Properties dialog box.
From the Properties dialog box, select the Driver tab.
Click the Update Driver button, then follow the instructions.
Very important: You must reboot your system to ensure that any driver updates have taken effect.
For more help, visit our Driver Support section for step-by-step videos on how to install drivers for every file type.