User's Manual Part 2

Maintenance 3EM21522AAAA
DTR-0200-SA-SIRIUS Issue 1, March 2008
6-14
STEP PROCEDURE
REMOVAL
1 Open front and rear doors.
a To Open Front Door
Release two locking screws then release two door latches
b To Open Rear Door
Release one locking screw then release two door latches.
2 Coordinate with NMC and switch repeater to Local operating condition.
3 Switch OFF all repeater PDU circuit breakers, switching repeater main
breaker last.
4 Switch OFF commercial power source breaker supplying power to
repeater.
5 Hang “DANGER – DO NOT TURN ON – PERSONNEL WORKING” sign at
commercial power source breaker.
Before removing RF detectors, tag each as FWD or REFL. The vertical detec-
tor is the FWD and the horizontal detector is the REFL. If the detectors are
not connected properl
y during reinstallation, the RF power feedback signals
to the main controller will be incorrect.
6 Loosen SMA connector(s) on detector(s) and remove detector(s) from RF
coupler.
7 Disconnect detector cable connector(s) from SPU controller rear panel
(FWD RF DETECTOR, REF RF DETECTOR).
8 Remove detector(s) from repeater.