On-Site Programming Maintenance - AT&T MERLIN LEGEND Release 3.1 Maintenance And Troubleshooting Manual

On-Site Programming Maintenance

On-Site Programming Maintenance
You can perform on-site maintenance with an MLX-20L console or a PC with
SPM software. This book provides maintenance instructions from the console.
If you are using a PC, refer to System Programming and Maintenance (SPM)
for details. If you use the UNIX System, see the documentation for Integrated
Solution Ill (IS III).
Setting Up the MLX-20L Console
To connect an MLX-20L console to the control unit, follow the steps below.
Refer to Figure 1–1.
1 Plug one end of a D8W-87 cord into one of the first five jacks on the
leftmost 008 MLX module or 408 GS/LS-MLX module.
The first MLX jack is the default. If it is already being used for the attendant
console, choose another jack. If one of the jacks is already being used for
system programming or maintenance, use that jack. Only one jack at a time
can be used for system programming or maintenance.
2 Plug the other end of the D8W-87 cord into the LINE jack on the
underside of the MLX-20L console.
MLX-20L Failure
If the MLX-20L console does not work, follow the steps below.
1 Replace the MLX-20L console with one that is known to be working (if
available).
2 If the failure persists, or if a working MLX-20L console is not available,
connect the original MLX-20L console directly into the appropriate MLX
jack on the control unit using a cord that is known to be working.
3 If the trouble clears, replace the original D8W-87 cord.
If not, use the PC as your maintenance terminal and then troubleshoot the
leftmost MLX module. See "Module Problems" in Chapter 4 for instructions.
1–3
Introduction