TABLE NO. 3-7. All STABILATOR And SAS SYSTEM Indicators Do Not Go On When LAMP TEST Switch Is Pressed And Held And Indicators Do Not Go Off When LAMP TEST Switch Is Released

TM 1-6625-735-14

TABLE NO. 3-7. All STABILATOR And SAS SYSTEM Indicators Do Not Go On When LAMP TEST

Switch Is Pressed And Held And Indicators Do Not Go Off When LAMP TEST Switch Is Released. (Cont)

TEST OR INSPECTION

CORRECTIVE ACTION

5. Release LAMP TEST control and check that all STABILATOR INDICATORS and

SAS indicators go off. Go to 6.

6. If lamps do not go off, replace switch S24.

TABLE NO. 3-8. Multimeter Does Not Indicate 10.22 6 0.35 Vdc When SCALING AMPL NO. 1 Con-

trol Is Turned Fully Counterclockwise And Does Not Indicate -10.22 6 0.35 Vdc When SCALING

AMPL NO. 1 Control Is Turned Fully Clockwise.

TEST OR INSPECTION

CORRECTIVE ACTION

1. Place SCALING AMPL STAB 1&2/SINGLE control to SINGLE. Go to 2.

2. Place SCALING AMPL NO. 1 control to SIM. Go to 3.

3. Connect multimeter between SCALING AMPL SIM NO. 1 and SIG GND test jacks.

Go to 4.

4. Turn SCALING AMPL NO. 1 control through its range from fully counterclockwise

(DN) to fully clockwise (UP). Multimeter shall indicate 10.22 6 0.35 vdc when SCAL-

ING AMPL NO. 1 control is fully counterclockwise and shall indicate -10.226 0.35

vdc when SCALING AMPL NO. 1 control is fully clockwise. Multimeter shall indicate

a continuously adjust-able voltage from counterclockwise to clockwise position.

Step 1. If multimeter indicates 0.0 vdc, go to 5.

Step 2. If multimeter indication is not correct, go to 6.

Step 3. If multimeter indication changes abruptly from 10.57 to -10.57 vdc, replace

potentiometer R5.

5. Check switch S5 for continuity.

Step 1. If continuity exists, go to 6.

Step 2. If continuity does not exist, replace switch S5.

6. Connect multimeter between terminal 2 of potentiometer R5 and signal ground.

Go to 7.

7. Turn SCALING AMPL NO. 1 control through its range from fully counterclockwise

(DN) to fully clockwise (UP). multimeter shall indicate 10 and -10 vdc.

3-13