RF Modulation Assemblv 1A3/1A4 PS4 (-15 Vdc)

TM 11-6625-2884-30/NAVAlR 16-35TS3615-2

REPLACEMENT

OF POWER SUPPLIES (Continued)

RF Modulation Assemblv 1A3/1A4 PS4 (-15 Vdc). Remove RF modulation

assembly from BTS in accordance with paragraph 3-32a.

REMOVAL

Place the RF modulation assembly in an upside down position on the

(1)

test bench.

Remove caution plate (1) - five pan head screws, lockwashers and

(2)

flat washers.

Tag and unsolder the 115 Vac input wires (2) and the two output

(3)

wires (3) from Power Supply PS4.

Remove pan head screw and lockwasher (4) securing PS4 to the RF

(4)

modulation assembly chassis.

Remove the pan head screws, lockwashers and flat washers (5)

(5)

securing the hold down bracket (6) to the RF modulation assembly.

Lower and remove PS4 (7) with the hold down bracket and two standoff

(6)

posts.

3-100