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

For 100D modules, continue with the CSU loopback test.

See ''100D Module Problems''
them as described in "Considerations" above.
Replace the module with a module of the same type, whether you

are troubleshooting or replacing the module permanently.
Restore the module.

Menu
Maintenance Slot
Restoring automatically undoes the busy-out and reset. For additional
information on restoring a module, see ''Restore'', later in this chapter.
Persistent Module Problems
If any of the module tests fail and replacing the module does not clear the
trouble, then:
Several modules may be faulty.
The connector on the carrier may be faulty.
Busy-Out and Reset
Before running any module test, be sure to busy-out or reset the module.
Busy-out discontinues service from the module being tested to each line
and extension only as they become idle. Busy-out is the preferred
method, because it does not disrupt calls in progress.
Reset discontinues service to all lines and extensions on the module
instantly.
— In-progress calls are dropped if all of the calling parties on the call
Dial the slot no.
originate and terminate on the module being reset.
later in this chapter. If errors occur, record
Restore
Issue 1
June 1997
Page 4-39
Yes