Module Problems - Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Control Unit Problems

Module Problems

Align the connectors on the new feature module with the

connectors in the processor (see
Firmly press the new feature module into the processor.

Insert the processor back into the carrier. (For more information

about inserting the processor, see Chapter 2 of Installation. )
Module Problems
If you suspect that a module is faulty, do the following:
To identify the cause of module errors, run the module tests described
below.
To determine whether the module is faulty, replace it with a module of the
same type. If the errors cease, the problem is solved.
Module Tests
The module tests in this section identify the cause of module malfunctions. After
each module test, record any errors on the repair tag that will be shipped with
the faulty module. If the module is sent for repair, this helps repair personnel
troubleshoot the cause of the malfunction.
You should read through the following section, "Module Test Process," before
running any module tests.
NOTE:
A module on which you run tests cannot be used for service. Because
your customer depends on this service, run module tests during off hours,
if possible. If you cannot, minimize the time required for each module's
downtime whenever possible.
Figure 4-5).
Issue 1
June 1997
Page 4-34