User's Manual Part 3

Clock Synchronization Alarms Card
MAY 2004 1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU 9-21
PRELIMINARY
Introduction
The procedures in this section cover only the Clock Synchronization
Alarms (CSA) card. The CSA occupies the second slot in the CCP2
Shelf.
System Impact/Considerations
This replacement procedure does require some system downtime. Since
there is no redundancy, call processing will be interrupted during the
time of the replacement.
Required Items
Documents
None.
Tools
None
Replacement Item
One CSA card.
Prerequisite
Coordinate this repair task with the OMC–R operator.
IMPORTANT
*
Contact the OMC–R operator before performing the replacement
procedure. Tell the operator that the CSA card will be replaced and that
alarms can be expected.
Upon completion of the replacement procedure, have the OMC–R
operator verify that old alarms are cleared and that no new ones are
reported.
Replacement Procedure
If desired, record the BTS and CSA serial number of the failed unit in
Table 9-58 at the end of this chapter.
Remove CSA Module
Follow the procedure in Table 9-11 to remove the CSA card.
Table 9-11: Procedure to Remove CSA Module
Step Action
n WARNING
Disengaging the CSA from the CCP2 Shelf will cause the site to be shutdown due to the disruption in
clock timing to the other cards and modules in the BTS.
1 Notify operator that the CSA card replacement procedure is starting and that alarms can be expected.
table continued on next page
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