User's Manual Part 3

RF–GPS Module – continued
MAY 2004 1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU 9-15
PRELIMINARY
Table 9-7: Procedure to Remove RF–GPS
Step Action
1 Notify operator that the RF–GPS module replacement procedure is starting and that alarms can be
expected.
2 Put on an ESD wrist strap or other approved grounding device.
3 At the rear of the BTS, disconnect RF–GPS cable from its SMA connector. See Figure 9-7.
4 Using a T20 bit, remove four M4 screws securing RF–GPS module to the CBIO Board.
5 Gently remove RF–GPS module (disconnects it from the RGPS D–connector in the CBIO Board) and
place in/on an anti–static container or surface.
Install RF–GPS
Follow the procedure in Table 9-8 to install the RF–GPS.
Table 9-8: Procedure to Install RF–GPS
Step Action
1 Put on an ESD wrist strap or other approved grounding device.
2 If not already done, remove new RF–GPS module from its anti–static container
3 Remove protective cover from RGPS D–connector.
4 Install RF–GPS module onto the CBIO Board, by aligning D–connector on bottom of RF–GPS
module with RGPS D–connector on CBIO Board and gently push down on module. See Figure 9-8.
5 Using a T20 bit, secure module to CBIO Board with four M4 screws. Torque screws to 2.3 N–M (20
in–lbs).
6 Connect RF–GPS cable to the SMA connector. Torque to 1 N–M (9 in–lbs).
7 Notify the operator that the replacement procedure is complete.
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