Northern Telecom Meridian 1 Installation And Maintenance Manual page 194

Page 184 of 220 Troubleshooting
Table 42 : Alarm troubleshooting (continued)
Alarm
Alarm:24
553-3601-200 Standard 7.00 November 1998
Meaning
Wireless
communication may
be disabled the next
time the system is
powered up.
Possible causes and actions
This message occurs only at the end of System
Reevaluation. It could be due to one of the
following:
• The system has fewer than four cells.
• The system is brought online before all Base
Stations are properly connected.
• There is a break in the power or TCM
connections to some Base Stations.
Note:
Do not attempt to solve the problem by
repowering.
1. Check that the correct number of Base
Stations have been connected and that the
system recognizes the Base Stations (see
page 151). If all the Base Stations you
expected to see are not showing or they are in
a failed state, check
• that the TCM wiring of Base Stations is correct
• that there is power to the Base Stations and
RPIs or plug-top power supplies
• that the location and number of Base Stations
are correct
• that any Base Station Modules are properly
connected to the expansion ports
2. Once you have corrected the problem run a
System Reevaluation (see "System
Reevaluation" on page 142).
If you continue to experience Alarm:24 after
running System Reevaluation, you have either
insufficient Base Stations or an insufficient
deployment.
Note:
If on the next power interruption you
have a disabled system, the display will
show UTAM test failed. Refer to
UTAM code req'd" on page 187.
"