REPLACEMENT OF POWER SUPPLIES

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

REPLACEMENT

POWER

SUPPLIES

3-37. Replacement of the eight internal power supplies of the BTS is

accomp ished by performing one of the following respective procedures.

Control Panel Assembly Power Supply 1A1PS1 (-15 Vdc). Remove Control

Panel Assembly 1A1 from them in accordance with paragraph 3-32c and

perform the following:

(1) Place the control panel in an upside down position on the test

bench.

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

flat washers.

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

wires (3) from Power Supply PSI.

(4) Remove pan head screw and lockwasher (4) securing PS1 to power

supply bracket.

(5) Remove pan head screw, lockwasher and flat washer (5), securing

the hold down bracket, between PS1 and PS3 (6).

(5) Lower and remove PS1 (7) with the hold down bracket and post (6).

REPLACEMENT

(1) Pos tion replacement -15 Vdc Power Suppl y 1A1PS1 (7) and bracket

a n d post (6) on control panel.

(2) Fasten 1A1PS1 to power supply bracket, using pan head screw and

lockwashers (4).

(3) Fasten hold down bracket and post (6) to power supply bracket,

using pan head screws, lockwasher and flat, washer (5).

(4) Solder 115 Vac input wires (2) and two output wires (3) to Power

Supply PS1, observing dc polarity.

(5) Install caution plate (1) with four pan head screws, lockwashers

and flat washers.

(6) Replace control panel in BTS according to paragraph 3-32d.

3-86