3Com EtherLink 3C985B-SX, Руководство пользователя

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76 C
HAPTER
5: D
IAGNOSTICS AND
T
ROUBLESHOOTING
Running the Group 2 Tests
Run the Group 2 tests to check the integrity of the
on-board circuitry and the on-board transceiver and cable
connectors. To run the External Loopback Test, you must
use a loopback plug.
CAUTION: Do not run the External Loopback Test when
the 3C985B-SX server NIC is cabled to another device.
To run the Group 2 tests:
1 Insert the loopback plug into the 3C985B-SX
server NIC.
For instructions on constructing a loopback plug, see
Constructing Loopback Plugs in this chapter.
2 From the Select menu on the diagnostics program
main screen, select the 3C985B-SX server NIC to
be tested.
3 From the Test menu, select Test Setup .
The Test Setup screen appears.
4 Disable Group 1 tests by selecting Group 1 and
clicking Disable Group .
5 Verify that Group 3 tests are disabled.
If the Group 3 tests are not disabled, select Group 3 , and
select Disable Group .
6 Select Group 2 and select Enable Group .
You can enable and disable an individual test by selecting
the test and pressing the spacebar.
7 Enter the number of times you want the tests to run,
or select Continuous .
8 Click OK.
The main screen reappears.
9 From the Test menu, select Run Tests .
The Test Results screen appears.
10 Click Start to run the Group 2 tests.
The test results are updated on the screen as the tests run.
11 When you are finished, remove the loopback plug
and reinsert the network cable.
Book Page 76 Monday, June 7, 1999 2:14 PM