User's Manual Part 3

SDCX Module
9-50 1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU MAY 2004
PRELIMINARY
Introduction
The procedures in this section cover only the removal and installation of
the Synchronization Daisy–Chaining and eXpansion (SDCX) Module.
System Impact/Considerations
If the SDCX fails it will cause a disruption in call processing by
upsetting the timing of the BTSs.
Required Items
Documents
None
Tools
Star screw driver.
Replacement Items
One SDCX Module (SGLN6153)
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 SDCX module 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 SDCX serial number of the failed unit in
Table 9-65 at the end of this chapter.
Remove SDCX
Follow the procedure in Table 9-28 to remove the SDCX Module.
Table 9-28: Procedure to Remove SDCX
Step Action
1 Notify operator that the SDCX Module replacement procedure is starting and that alarms can be
expected.
2 Put on an ESD wrist strap or other approved grounding device.
table continued on next page
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