Instruction manual

MERLIN LEGEND Communications System Release 5.0
Maintenance and Troubleshooting
555-650-140
Issue 1
June 1997
Control Unit Problems
Page 4-114
100D Module Problems
■ Synchronization. The system maintains proper synchronization to the
loop clock and switches to the local clock when the loop clock is not
available (for example, during a loss of signal or a blue alarm). When the
loop clock source is restored, the system switches back to the loop clock.
100D Module Error Events
This procedure allows you to check for 100D module errors. If you have any
questions about interpreting these errors, contact your technical support
organization.
Summary
To check for Errors, follow the steps below.
From the Maintenance menu, select the Slot option.
Console Display/InstructionsAdditional Information PC
Console Procedure Menu→
Maintenance→Slot→Dial the slot
no.→
Enter→Error Events→Current hr or Previous hr
PC Procedures
→ →Type the slot no.→ → →
or
Maintenance
Make a selection
System
Slot
Port
Exit