Lucent Technologies MERLIN LEGEND Release 5.0 Maintenance And Troubleshooting Manual page 127

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting 555-650-140
Control Unit Problems
Module Problems
Considerations
Review the following items before you begin a module test procedure.
System Components
Before running a module test, make sure the following system components are
working:
Power supply
Processor. Save the system programming onto a floppy disk. See
System Programming and Maintenance (SPM). To back up onto a
memory card, see
Maintenance Terminal (MLX-20L console or PC). To run tests on the
MLX module connected to the MLX-20L console, you must run the test
from the PC, not from the MLX-20L console.
Busy-Out/Reset
Before running a module test, busy-out or reset the modules. Busy-Out is the
best method, but it will not work if any line or extension is on a stable call. See
''Busy-Out and
features.
Test Notes
For each test, you should note the following:
When beginning the board controller test or the internal loopback module
test, choose to run it once or repetitively.
You can interrupt any module test by selecting
A module test can fail for one of the following reasons:
— The module being tested was not busied-out. Exit the test,
— The error messages indicate that the module is faulty.
Appendix D, ''Backing Up with a Memory
Reset'', later in this chapter, for more information on these
busy-out the module, and try again.
June 1997
Page 4-37
Card''.
( on the PC).
Exit
!
Issue 1