User's Manual Part 3

Compact Combined Linear Power Amplifier – continued
9-68 1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU MAY 2004
PRELIMINARY
Table 9-39: Procedure to Remove cCLPA
Step Action
3 Turn off DC power to the cCLPA. For Outdoor configuration disengage the PDE circuit breaker to the
cCLPA being removed.
4 Use a screwdriver with a T20 star bit to remove 8 screws securing I/O Board cover to the cCLPA.
5 Loosen screws securing DC power to the I/O Board DC connector.
6 Disconnect BTS Data Cable from the I/O Board.
7 Disconnect ground cable from the cCLPA.
8 Remove 4 M6 screws securing cCLPA to the rack.
9 Loosen 2 M6 screws securing cCLPA flange to the rack enough to safely remove the cCLPA.
10 Lift cCLPA up and away from the rack.
Install cCLPA
Follow the procedure in Table 9-40 to install the cCLPA.
Table 9-40: Procedure to Install cCLPA
Step Action
1 Lift cCLPA up and hang on two screws. Ensure that all screw holes align, then tighten screws to
flange.
2 Install 4 M6 screws and secure cCLPA to rack.
3 Connect ground cable to cCLPA.
4 Route BTS Data Cable through cCLPA DATA opening and connect to RJ45 connector on cCLPA I/O
Board.
5 Route DC power cable through DC IN opening and insert in DC Power terminal board. Ensure that the
“–” wire goes to –48V and the “+” wire goes to 0V locations. Tighten the screws to secure the wires in
place.
6 Install I/O Board cover panel and use a screwdriver with a T20 star bit to secure it to cCLPA using 8
M6 screws.
7 On cCLPA, pull out 20A circut breaker.
8 Turn on cCLPA DC power source.
9 Allow the cCLPA to power up by pushing in the 20 A circuit breaker.
10 Notify OMC–R operator that the cCLPA replacement procedure is completed.
11 Have OMC–R operator enable cCLPA and associated BBX card(s) that were taken out–of–service and
verify that there are no new alarms.
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