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Maintenance
5. If the LANIC fails self-test, except as noted below, replace the LANIC card in accordance with the
procedures given in Section 2. Re-run the self -test after the new card is installed. If the new card
passes self -test and there still appears to be a problem on the network, run the LAN diagnostic (it is
possible for the LANIC to pass self-test and still not be functioning properly). The diagnostic tests
more of the LANIC card circuitry and also tests the ThinMAU. Refer to the
LAN/3000
Diagnostic
and Troubleshooting Guide, part number
30242-90003,
for information on running the LAN
diagnostic.
NOTE
The last test of the test sequence (2E, Loopback on Medium) requires that
the ThinMAU be connected to the LANIC. If it is not connected to the
LANIC, the last test will report a failure. The LANIC, however, may not
be defective in this case.
6. If an intermittent problem is suspected, the self-test may be looped by holding the LANIC TEST
RESET switch in with an alligator clip. The self-test will then loop until a failure is detected, and
will preserve the failure code as described in step 4 as long as the switch remains in.
7. If the self -test completes with no error indications, the LAN/3000 diagnostic must also be run to
completely check the LANIC and ThinMAU. Run the diagnostic as described in the
LAN/3000
Diagnostic and Troubleshooting Guide, part number
30242-90003.
11/85
4-3
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