Service Manual

282
6802800U74-AN
Chapter 7: Radio Frequency Distribution System
7.3.5.1.1
Removing the Post Filter
Procedure:
1 WARNING: RF energy hazard and potential equipment damage precaution.
To prevent accidental contact with high energy and injury to personnel, switch off 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 TX and signal cables.
6 Loosen the two fastening screws at the front enough to free the mounting bracket.
NOTICE: If a Preselector is mounted on the same bracket, remove the Preselector to
slide out the filter bracket. See Removing the MTS 4 Preselector on page 276.
7 Slide the Post Filter out of the cabinet.
8 Remove the Post Filter from the bracket and replace with the new unit.
7.3.5.1.2
Reinstalling the Post Filter
Procedure:
1 Insert the Post Filter into the cabinet.
See Inserting the Post Filter into the Cabinet on page 282.
2 Update the mapping list with the new unit TrackID.
See Updating the Mapping List with the New Unit TrackID on page 283.
7.3.5.1.3
Inserting the Post Filter into the Cabinet
Procedure:
1 Fasten the Post Filter onto the bracket with screws.
2 Slide the Post Filter into the cabinet.
3 Tighten the two fastening screws at the front to secure the mounting bracket.
4 Attach the antenna and the 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.