3Com EtherLink 3C985B-SX Installation And User Manual - page 31
Troubleshooting Checklist
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Troubleshooting Checklist
The following checklist provides recommended actions to take to resolve problems installing the NIC or running it
in your system.
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Inspect all cables and connections. Verify that the cable connections at the NIC and the switch are attached
properly. Make sure that the cable length and rating are compliant with the requirements listed in
"Connecting the Network Cables" on page 13.
■
Connect the NIC to a different network port and run the tests again. If the test results reflect that the NIC is
functioning properly, the original network port may be defective or improperly configured.
■
Check the NIC installation by reviewing Chapter 2. Make sure that the NIC board is properly seated in a PCI
slot. Check for specific hardware problems, such as obvious damage to board components or the PCI edge
connector.
■
Check the configuration settings and change them if they conflict with another device.
■
Make sure that your system is using the latest BIOS.
■
Try inserting the NIC in another slot. If the new position works, the original slot in your system may be
defective.
■
Replace the failed NIC with one that is known to work properly. If the second NIC works in the slot where the
first one failed, the original NIC is probably defective.
■
Install the NIC in another functioning system and run the tests again. If the NIC passed the tests in the new
system, the original system may be defective.
■
Remove all other NICs from the system and run the tests again. If the NIC passes the tests, the other NICs may
be causing contention.
3Com Support Information
For product support information, software updates, and release notes, see "Contacting 3Com" on page 1.
CAUTION: Before opening the cabinet of your system for removing or inserting the NIC, please review all
precautions outlined under "Safety Precautions" on page 11.