Service Manual

279
6802800U74-AN
Chapter 7: Radio Frequency Distribution System
See Removing the MTS 4 Duplexer on page 279.
2 Insert the Duplexer into the filter tray.
See Inserting the MTS 4 Duplexer into the Cabinet on page 279.
3 Update the mapping list with the new unit TrackID.
See Updating the Mapping List with the New Unit TrackID on page 280.
7.3.3.1.1
Removing the MTS 4 Duplexer
Procedure:
1 WARNING: RF energy hazard and potential equipment damage precaution.
To prevent accidental contact with high energy and injury to personnel, switch ff all power to the
Power Supply Unit.
2 Remove the four screws holding the front panel.
3 Loosen the two screws holding the front section of the top panel and slide off the panel.
4 Loosen the screws fastening the rear section of the top panel and slide off the panel.
5 Unscrew the antenna cable and remove the RX, TX and signal cables.
6 Loosen the two fastening screws at the front enough to free the mounting bracket.
7 Slide the Duplexer out of the cabinet.
8 Remove the Duplexer from the bracket and replace.
7.3.3.1.2
Reinstalling the MTS 4 Duplexer
Procedure:
1 Insert the Duplexer into the cabinet.
See Inserting the MTS 4 Duplexer into the Cabinet on page 279.
2 Update the mapping list with the new unit TrackID.
See Updating the Mapping List with the New Unit TrackID on page 280.
7.3.3.1.3
Inserting the MTS 4 Duplexer into the Cabinet
Procedure:
1 Fasten the Duplexer onto the bracket with screws.
2 Slide the Duplexer into the cabinet.
3 Tighten the two fastening screws at the front to secure the mounting bracket
4 Attach the antenna cable and the RX, TX and signal cables.
5 Slide on the top rear and front panels and fasten these with screws.
6 Put the front panel back on and screw this into place.
7 Put the door of the cabinet back on.