3Com EtherLink 3C590 User Manual page 45

4-8 C 4: P
HAPTER ERFORMING
performance in a bus master slot, but will work in a non-bus
master slot. Refer to your computer documentation.
The original slot may be defective.
4 Make sure that you booted your computer under DOS
version 6.x or later, and that no device drivers or memory
managers are loaded.
5 If you are running the Group 2 test (only on the 3C590-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.
6 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.
7 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.
8 Install the adapter in another PCI slot and run the
diagnostic tests again.
The original slot may be defective.
9 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 C, "Technical Support."
T D
ROUBLESHOOTING AND IAGNOSTIC
T
ESTS