TABLE NO. 3-16. Multimeter Does Not Indicate -13.5 6 0.15 Vdc When ACTR POSN Control Is Turned Fully Counterclockwise And Does Not Indicate 13.5 6 0.15 Vdc When ACTR POSN Control Is Turned Fully Clockwise

TM 1-6625-735-14

TABLE NO. 3-16. Multimeter Does Not Indicate -13.5 6 0.15 Vdc When ACTR POSN Control Is

Turned Fully Counterclockwise And Does Not Indicate 13.5 6 0.15 Vdc When ACTR POSN Control Is

Turned Fully Clockwise. (Cont)

TEST OR INSPECTION

CORRECTIVE ACTION

4. Connect multimeter between ACTR POSN SIM NO. 2 and SIG GND test jacks.

Go to 5.

5. Turn ACTR POSN control throughout its range from fully counterclockwise (ACTR

POSN DN) to fully clockwise (ACTR POSN UP). Multimeter shall indicate -15.0 and

15.0 vdc.

Step 1. If multimeter indication is not correct, go to 6.

Step 2. If multimeter indication is correct, replace switch S1.

6. Connect multimeter between terminal 2 of potentiometer R1 and signal ground.

Go to 7.

7. Turn ACTR POSN control throughout its range from fully counterclockwise (ACTR

POSN DN) to fully clockwise (ACTR POSN UP). Multimeter shall indicate 15.0 and

-15.0 vdc.

Step 1. If multimeter indication is correct, go to 8.

Step 2. If multimeter indication is not correct, replace potentiometer R1.

8. Check switch S1 for continuity.

Step 1. If continuity exists, replace circuit board assembly A1.

Step 2. If continuity does not exist, replace switch S1.

TABLE NO. 3-17. Multimeter Does Not Indicate -1.0 6 0.2 Vdc When ACTR POSN Switch Is Placed

To SIM STAB 1, SIM STAB 2, Or SIM STAB 1&2.

TEST OR INSPECTION

CORRECTIVE ACTION

Replace switch S1.

3-19