3Com ATMLINK 155 PCI User Manual page 103

2 Inspect all cables and connections.
3 Make sure that your computer was booted with DOS
version 6.x, and that no device drivers or memory managers
are loaded.
4 Make sure that the PCI slot with the NIC in it is activated.
Some PCI computers allow PCI slots to be activated or
deactivated through the computer's CMOS utility or a special
PCI utility. Refer to your computer documentation for
information about activating PCI slots.
5 Make sure that the 3C975 ATMLink NIC is in a bus master
slot.
Some computers do not support bus mastering on all PCI
slots. The ATMLink NIC does not work in a non–bus master
slot. Refer to your computer documentation.
6 Try installing the NIC into another PCI slot. The original slot
may be defective.
7 Replace the failed NIC with a working NIC and run the
diagnostic tests again.
If the working NIC passes all tests, the original NIC is probably
defective. For information on returning products for repair,
refer to Appendix B, "Technical Support."
8 Install the NIC in another functioning PCI computer and run
the tests again.
Your computer may be defective. If the NIC passes the tests
in the second computer, contact the reseller or manufacturer
of the original computer.
9 Remove all other PCI NICs from the computer and run the
tests again. If the tests pass, the other PCI NICs may be
causing contention.
3Com recommends that you always run the most current version
of the system BIOS. Firmware upgrades are often available
online from the manufacturer of your computer system.
What to Do If a Test Fails 6-15