Motorola DIMETRA MTS 2, Инструкция по установке, настройке и базовому обслуживанию

Страница: 371 / 517

MTS 2 and MTS 4 Installation, Con
fi
guration and Basic Service Manual Troubleshooting: Power
Troubleshooting: Power
•
Check for Power Supply Unit failure.
•
Verify power (voltage and polarity) on rear connector. If power is present and correct then
replace the Site Controller. Otherwise check for the Site Controller power supply cabling fault.
Ensure that the polarity of DC cable connection is correct, as it is reversed in comparison to MBTS.
Troubleshooting: status sc
This section details usage of the Application mode MMI command status sc for general
troubleshooting and to determine the Site Controller status.
Use the status sc command. Observe the “Overall Status”
fi
eld of the resulting output and proceed as follows.
•
If Overall Status = Active – <state> / <reason>, this is an indication that the Site Controller
is currently active, together with the site reference state and the reason for that state.
These states and reasons are explained in
Table 13-2 and Table 13-3 .
•
If Overall Status = SC is going active – waiting for BRs, the Site Controller may
be unable to communicate with the BRs. Waiting for Site Controller con
fi
guration
fi
le load, the con
fi
guration
fi
le may be corrupt or is not present. See "LED Fault
Indications " and "Troubleshooting: SC Con
fi
g File" .
Table 13-2 Site Reference States - status sc
Site Reference State Explanation
UNKNOWN The site reference is initializing - this is a transient state that may persist
for a few minutes at start up.
ENABLED_SYNC The site reference is fully trained to GPS - This is the highest level of
functionality.
DISABLED The site reference is not working.
FREE_RUN_SYNC
This is the
fi
rst level of fallback - The site reference will continue to provide
its highest level of service in this state until the free run timer expires.
NON_SYNC This is the second level fallback - The site reference is providing service
however any feature that needs sites to be synchronized may be impaired.
NON_SYNC_ADJ_REQ The site has been operating in its 2nd level fallback mode for too long (>
350 days) and should be disabled by the operator.
ENABLED_NON_SYNC The site has been con
fi
gured to operate in its 2nd level fallback mode (FNC)
to enable start-up without GPS.
6802800U74-N September 2009
13-5