3Com Corporation
EtherDisk Diskette for the EtherLink/MC Adapters
Troubleshooting
If the EtherLink/MC adapter diagnostic tests fail, the adapter may not be
defective. Check the following:
1. Make sure that the adapter is completely seated in its slot. Review the
installation instructions in the appropriate adapter guide.
2. Inspect all cables and connections.
3. If you are running the Group 2 tests, make sure that the adapter is
securely connected to a loopback plug (coax version only) or to a
properly cabled inactive network.
4. If you are running the Group 3 tests, make sure that the adapter is
securely connected to a properly cabled inactive network and that an
echo server is set up on the network.
5. Make sure that none of the adapter settings conflict with any other
peripheral or software program (such as 3Com's Extended Memory Manager)
installed in the computer. For a list of system resources commonly used
by other peripherals, select "Additional Adapter Information" from the
main menu, then "System Resources" from the Information submenu.
6. Make sure that the transceiver type selected is correct.
7. Running tests while connected to an active network can cause intermittent
failures. These failures can be avoided by using an inactive network on
which only the computer being tested (and an echo server if running the
Group 3 tests) is connected.
8. If you installed an EtherLink/MC TP adapter, check the LEDs on the back-
plate of the adapter. The yellow (ACT) LED is on when there is data
transmission activity on the adapter. This light will go on during
the Group 2 and Group 3 tests. The green (LNK) LED will be on when there
is a correct connection between the adapter and the hub. If the link
pulse jumper is in the OFF position, the green LED will be on whether or
not there is a connection.
9. If you have installed an EtherLink/MC TP adapter, make sure that the
settings for the following jumpers are correctly configured for the hub:
RECEIVE THRESHOLD
DC SIGNAL
LINK PULSE
EQUALIZATION
WIRE IMPEDANCE
TRANSMIT LEVEL
For information on setting these jumpers, select "Additional Adapter
Information" from the main menu, then "Twisted-pair Options" from the
Information submenu.
10. The slot in the computer may be defective. Install the adapter in
another slot and run the tests again.
11. The computer in which the adapter is installed may be defective.
Install the adapter in a known functioning computer and run the tests
again.
12. The loopback plug you are using may be defective. Try a different
loopback plug.
13. Replace the failed adapter with a known working EtherLink/MC adapter
with the same jumper settings. If the second EtherLink/MC adapter fails,
something is wrong with the test environment, not with the adapter.
(%VER Troubleshooting v3.4a)
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.