Troubleshooting Checklist; 3Com Support Information - 3Com EtherLink 3C985B-SX Installation And User Manual

Troubleshooting Checklist

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.
The following checklist provides recommended actions to take to resolve problems installing the NIC or running it
in your system.
Inspect all cables and connections. Verify that the cable connections at the NIC and the switch are attached
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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
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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
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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.
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Make sure that your system is using the latest BIOS.
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Try inserting the NIC in another slot. If the new position works, the original slot in your system may be
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defective.
Replace the failed NIC with one that is known to work properly. If the second NIC works in the slot where the
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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
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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
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be causing contention.

3Com Support Information

For product support information, software updates, and release notes, see "Contacting 3Com" on page 1.
Troubleshooting Checklist
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