3Com Corporation
		EtherDisk Diskette for the EtherLink Plus Adapter

				Troubleshooting



If the EtherLink Plus adapter diagnostic tests fail, the adapter might not be
defective.  Check the following:

1.  Make sure the adapter is completely seated in its slot.  Review the
    installation instructions in the EtherLink Plus Adapter Guide.

2.  If you are running the group 2 tests, make sure that the adapter is
    securely connected to a loopback plug or to a properly cabled network.

3.  If you are running the group 3 tests, make sure that the adapter is
    securely connected to a properly cabled network and that an echo server
    is set up on the network.

4.  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.	See the SYSRESRC.TXT file in the \INFO
    directory on the EtherDisk diskette for a list of system resources used by
    other common peripherals.

5.  Make sure that the hardware jumpers for the I/O base address, DMA channel
    and interrupt level are correctly set and match what you have specified
    when you run the diagnostic program.

6.  Make sure you are running the tests on an inactive network to which only
    the computer being tested (and an echo server if running the Group 3
    tests) are connected.  Running tests while connected to an active network
    can cause intermittent failures.

7.  The slot in the computer may be defective.	Install the adapter in
    another slot and run the tests again.

8.  The computer in which the adapter is installed might be defective.
    Install the adapter in a functioning computer and run the tests again.

9.  The loopback plug you are using might be defective.  Try a different
    loopback plug.

10. Replace the failed adapter with a known working EtherLink Plus adapter,
    with the same jumper settings.  If the second EtherLink Plus adapter fails,
    something is probably wrong with the test environment, not with the
    adapter.





(%VER  Troubleshooting v2.0a)