Power Supply Al PS1

TB 11-6625-2937-35

b. Adjustment.

(9) Press RECYCLE TEST switch, on

digital testing down and release. Observe that

(1) Adjust power supply output voltage

red RECYCLE TEST indicator lights during test.

adjustment (ADJ POT) for a voltage indication

(10)

Adjust oscilloscope controls so that

of +5.0_+0.1 V on the multimeter.

waveforms displayed are similar to B, figure 6.

(2) Set POWER ON/OFF switch to OFF.

b. Adjustment.

(3) Remove multimeter from terminals 3

(1) Press RECYCLE TEST switch, on

(+) and 4 (--) of power supply AlPS1.

digital tester, dow nand release. Observe that red

RECYCLE TEST indicator lights during test.

11. Power Supply Al PS2

(2) Adjust capacitor C3 (fig. 5) for square

a. Performance Check.

wave with zero displacement +100 msec similar

to waveform B, figure 6.

NOTE

(3) Remove circuit card assembly A4 from

Digital tester is not used when performing

extender card, remove extender card, and plug

calibration process on control-interface unit

A4 into control-interface unit.

power supply AlPS2.

10. Power Supply Al PS1

(1) Perform all instructions in paragraph

a. Performance Check.

10a(l) through 10a(5).

(2) Set multimeter to 50 V dc range and

NOTE

connect meter to terminals 7 (+) and 6 (-) of

Digital tester is not used when performing

power supply ALPS2 (13, fig. 3).

calibration process on control-interface unit

(3) Set POWER ON/OFF switch to ON.

power supply AlPS1.

(4) Observe the voltage indicated on the

multimeter. The multimeter should indicate +15

(1) Remove top and bottom access covers of the

+0.1 V.

b. Adjustment.

control-interface unit (fig. 3).

(2) Position the control-interface unit in a clean work

(1) Adjust power supply voltage adjust-

area, for convenient access to both top and bottom of

ment (ADJ POT) for a voltage indication of

unit.

+15.0_+0.1 V on the multimeter.

(3) Set the control-interface unit controls as

(2) Set POWER ON/OFF switch to OFF.

follows:

(3) Remove multimeter from terminals 7

Control

Setting

(+) and 6 (-) of power supply AlPS2.

POWER ON/OFF OFF

MODE SELECT POWER OFF

12. Power Supply Al PS3

a. Performance Check.

NOTE

Do not connect test

equipment

until

NOTE

instructed to do so.

Digital tester is not used when performing calibration

process on control-interface unit power supply AlPS2.

(4) Connect three-phase power (115 Vac,

400 Hz) to control-interface unit via power cable

(1) Perform all instructions in paragraph 10a (1)

assembly W1 (fig. 4).

through 10a (5).

(5) Using multimeter, verify input voltage

(2) Set multimeter to 50 V dc range and connect

of 196 10 V ac phase-to-phase.

meter to terminals 3 (+) and 4 (-) of

(6) Set multimeter to 50 V dc range and

power supply AlPS3 (14, fig. 3).

connect meter to terminals 3 (+) and 4 (-) of

(3) Set POWER ON/OFF switch to ON.

power supply AIPS1 (7, fig. 3).

(4) Observe the voltage indicated on the multimeter.

(7) Set POWER ON/,'OFF switch to ON.

The multimeter should indicate +28.0+0.2 V

(8) Observe the voltage indicated on the

multimeter. The multimeter should indicate

-. +5.0+0.1 V.