IBM 3745 Problem Determination Manual page 288

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4
Make sure that the remote control unit and modem are operational.
5
Perform L1C tailgate data wrap test, using the wrap plug. For a complete
description of this test, see Chapter 16.
If the test fails, go to step 6.
If correct, reactivate the line, restart the application, and go to step B.
If the application is still failing, go to next step.
6
Do one of the following:
7
• If there is spare LlC, go to step 7.
• If there is no spare LlC, but spare port(s) are defined for failing lines:
Perform a port swap. Refer to the 3745 Advanced Operations Guide.
If the problem persists:
CO
• Deactivate the second line (if connected).
• Replace and configure the LlC, as described in the 3745 Connection and
Integration Guide. .
• Follow steps 4, 5, and 6 beginning on page 9-37. If the test is successful,
reactivate the line.
Chapter 9. LlC and Line Problems (LSS)
9-37