3Com III User Manual page 57

3 Make sure that you booted your computer under DOS
version 3.1 or later, and that no device drivers or memory
managers are loaded.
4 If you are running the Group 2 test (only on the 3C592-COMBO
adapter), make sure that the loopback plug is securely
attached to the adapter's BNC connector and that the adapter
is attached to a properly cabled nonproduction network.
If this test fails, try another loopback plug.
5 If you are running the Group 3 test, make sure that the
adapter is connected to a properly cabled and inactive
network and that an echo server is set up on the network.
6 Make sure that the settings for the adapter's options are
not the same settings used in the computer or on any other
adapter boards installed in the computer.
If you need help, select Configuration/Diagnostic/
Troubleshooting on the 3C59X EtherDisk diskette main menu.
Then select Configuration and Diagnostic Program. When the
next screen appears, press [F4] to display the adapter's
configuration values.
7 Install the adapter in another EISA slot and run the
diagnostic tests again.
The original slot may be defective.
8 Replace the failed adapter with a working adapter and run
the diagnostic tests again.
Use the same option settings as those used on the failed
adapter. If the working adapter passes all tests, the original
adapter is probably defective. For details on repair procedures,
refer to Appendix B, "Technical Support."
9 Install the adapter in another functioning computer and
run the tests again.
Your computer may be defective. If the adapter passes the
tests in the second computer, contact the reseller or
manufacturer of the original computer.
Getting Help If a Test Fails 5-9