User's Manual

Table Of Contents
Pre-Power-up Tests68P09255A61-4
Aug 2002
1X SC 4812T BTS Optimization/ATP Software Release 2.16.1.x
FIELD TRIAL
2-7
Table 2-2: DC Power Pre-test (BTS Frame)
Step Action
8 In the -48 V BTS, insert and lock the DC/DC LPA converter modules into their associated slots one at
a time.
Repeat Step 3 after inserting each module.
A typical response is that the ohmmeter steadily climbs in resistance as capacitors charge, finally
indicating approximately 500
.
! CAUTION
Verify the correct power/converter modules by observing the locking/retracting tabs appear as follows:
-
(in -48 V BTS power conversion shelf)
STPN4044A
PWR CONV LPA
9 Seat all LPA and associated LPA fan modules into their associated slots in the shelves one at a time.
Repeat Step 3 after seating each LPA and associated LPA fan module.
A typical response is that the ohmmeter will steadily climb in resistance as capacitors charge,
stopping at approximately 500
..
2