ADJUSTMENT OF 65 V POWER SUPPLY 1A3/1A4 PS3

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

ADJUSTMENT OF 65 V POWER SUPPLY 1A3/1A4 PS3

3-35.

To adjust -65 V Power Supply 1A3/1A4 PS3 perform the following:

Remove RF modulation assembly from bench test set in accordance with

paragraph 3-32a. Set the RF modulation assembly upside down on the test

bench. Connect the power cord to an energized 115 V ac, 60 Hz source.

Check that front panel power lamp DS1 illuminates.

Connect the common lead of the DMM to ground and the DMM

lead to the

-65 V test point (1).

Using screwdriver, rotate the PS3 -65 V ADJ control clockwise or counter-

clockwise until the DMM meter indicates -65.0 V (2).

Remove test leads from RF modulation assembly.

Reinstall RF modulation assembly in BTS using the procedure in paragraph

3-84