User's Manual Part 3
RF Filter Tray – continued
MAY 2004 1X SC480 BTS Hardware Installation, Optimization/ATP, and FRU 9-63
PRELIMINARY
Install Filter Tray Kit SGLN6223
Follow the procedure in Table 9-36 to install the Filter Tray. Refer to
Figure 9-22.
Table 9-36: Procedure to Install Filter Tray Kit SGLN6223
Step Action
1 Put on an ESD wrist strap or other approved grounding device. Ensure that wrist strap is properly
grounded.
NOTE
Do not attach grounding devices to BTS chassis.
2 If the filter tray to be installed is different from the one removed, proceed to the appropriate filter tray
installation procedure. Otherwise, proceed to step 5.
3 If not already installed, the following cables must be installed:
– RX RFL–DIV (green)
– RX FWD–DIV (green)
4 Remove the CBIO Board by performing the procedure described in Table 9-26.
5 Connect cables to the RFL–DIV and FWD–DIV connectors, respectively. Use a 5/16–in wrench to
secure cables to connectors. Torque to 1 N–M.
NOTE
Cables have two heat shrink sleeves with a slight separation between them. The cMPC cable clip
slides into this separation to hold the cables in place.
6 Install RX MAIN and RX DIV cables as follows:
– Ensuring the cable is on the inside of BTS, place RX DIV (green) cable into slot 1 of cMPCcable
clip (Connector labeled RX DIV faces towards the front of BTS)
– Place RX MAIN (blue) cable into slot 2 of cMPC cable clip (Connector labeled RX MAIN faces
towards the front of BTS).
– Place (red) cable into slot 5.
– Place (black) cable into slot 6.
7 Perform Table 9-33 to install the cMPC cable clip.
8 Set new Filter Tray into its slot and connect the input RX MAIN (blue) directly to output RX MAIN
cable. Connect RX DIV (green) cable to the output connector at the rear of the RX DIV filter. See .
9 Slide Filter Tray into BTS chassis and secure using 2 M4 screws. Torque to 2.3 N–M (20 in–lbs).
10 Connect the following cables:
– RX DIV (green) to RX DIV input
– RX RFL–DIV (green) to RFL–DIV input
– RX FWD–DIV (green) to FWD–DIV input
See Figure 9-23.
11 Use tie–wraps to dress cables as necessary.
table continued on next page
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