AT&T 3.0 manual Clearing Alarms, System Restarts

Maintenance Strategy

If a software installation or upgrade is taking place, a blinking character is displayed to indicate the status of the procedure. See "Forced Installation of System Software” in Chapter 4 for more information.

■The status display indicates an alarm (on an MLX-20L console or a PC running SPM), and can be viewed on the Error screen.

■A supplemental alert, bell, chime, or strobe, if installed, is activated.

.

If an LED is programmed to indicate the alarm, the LED stays lit until the error is cleared.

When the system indicates an alarm, check the permanent error log screen.

Clearing Alarms

The system clears alarms automatically when the error condition no longer exists.

To clear an alarm manually, select Drop on the MLX-20L console or (Alt) + (P) on a PC while viewing the error. See “Error Logs” in Chapter 2 for more information.

System Restarts

Depending on the severity and duration of a problem, you may need to restart the system manually. Some errors cause the system to restart automatically. Every restart causes an error log entry, and each type of restart has its own error code. A cold start (Restart) or frigid start (System Erase) also causes a C or F to appear on the error code/status display on the processor module.

There are three types of system restarts, all of which occur automatically:

■Warm start (you cannot select this from the Maintenance menu)

■Cold start (select Restart to do this manually)

■Frigid start (select System Erase to do this manually)

1–20Introduction