TABLE NO. 3-2. POWER 115 VAC 400 Hz STAB 1, STAB 2, And SAS Indicator Lights Do Not Go On When Facility Power Is Applied To Test Set.

TM 1-6625-735-14

TABLE NO. 3-2. POWER 115 VAC 400 Hz STAB 1, STAB 2, And SAS Indicator Lights Do Not Go

On When Facility Power Is Applied To Test Set.

TEST OR INSPECTION

CORRECTIVE ACTION

1. Place all test set mode selector controls to OFF or NORM. Go to 2

2. Place AIRSPEED SWITCH mode selector control to greater than (>) 60 KNOTS.

Go to 3

3. Place SCALING AMPL STAB 1 & 2 SINGLE control to STAB 1 & 2. Go to 4.

4. Pull out all test set circuit breakers. Go to 5.

5. Connect P1, P2, and P3 of locally made cable to test set connectors J1, J2, and J3 of

test set as shown in Figure 2-3. Go to 6

6. Apply 28 vdc and 115 vac power to test set. POWER 115 VAC 400 Hz STAB 1,

STAB 2, and SAS indicator lights shall go on. Go to 7.

7. If indicator lights do not go on, replace lamp (DS4, DS5, and/or DS6).

TABLE NO. 3-3. POWER 28 VDC STAB 1 Indicator Light Does Not Go On When Power 28 VDC

STAB 1 Circuit Breaker Is Pushed In.

TEST OR INSPECTION

CORRECTIVE ACTION

Check for 27.5 6 0.5 vdc between 28 VDC STAB1 and PWR GND test jacks.

Step 1. If voltage is present, replace lamp DS3.

Step 2. If voltage is not present, replace circuit breaker CB3.

TABLE NO. 3-4. POWER 28 VDC STAB 2 Indicator Light Does Not Go On When POWER 28 VDC

STAB 2 Circuit Breaker Is Pushed In.

TEST OR INSPECTION

CORRECTIVE ACTION

Check for 27.5 6 0.5 vdc between 28 VDC STAB2 and PWR GND test jacks.

Step 1. If voltage is present, replace lamp DS2 and retest.

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