User's Manual Part 2

Maintenance 3EM21522AAAA
DTR-0200-SA-SIRIUS Issue 1, March 2008
6-2
6.6.2 Local Troubleshooting Overview
Local troubleshooting is performed at the repeater site by a dispatched technician
using a PC, GUI screens (or CLI), and external test equipment. When the fault is cor-
rected, the technician follows on with a system test. When satisfied that the repeater
is operating correctly
, coordination between the technician and the NMC operator
returns the repeater back to the remote operating condition and broadcast mode.
6.7 REPEATER ALARM INDICATORS
Alarms are indicated on GUI Status screens, GUI Alarms screens, and front panel
LEDs.
Refer to Appendix D, Alarm Descriptions, Causes, and Corrections .
6.8 TROUBLESHOOTING PROCEDURES
6.8.1 Remote Troubleshooting/Repair Procedures
• Upon receipt of an alert via the repeater site TELCO line, NMC personnel
will evaluate the indicated problem(s). Refer to the Operations section for
instructions on use of the GUI.
• Access the GUI
• View the Alarms screens for indicated problem identification.
• View the Status screens for additional information.
• If it is determined that the problem(s) can be corrected remotely, access the
necessary GUI screens and correct as required.
• If it is determined that the problem(s) cannot be corrected from the NMC,
take the necessary steps to dispatc
h a technician to the repeater site to
perform local maintenance.
6.8.2 Local Troubleshooting/Repair Procedures
When indicated cautionary statements are adhered to by the technician during
maintenance, the equipment is unlikely to present a hazard to the technician or the
structure.
The front and rear doors of the repeater cabinet are secured by
draw latches and captive locking screws. There are two latches
and two locking screws on the cabinet front door and two latches
and one locking screw on the cabinet rear door (see figure 6-1). It is
imperative that opening and/or closing of these doors be done in
the provided sequence. Failure to follow the sequence could result
in door warping or bending and render the cabinet water protec-
tion system invalid.
WARNING
Possibility of
Damage
to Equipment