TABLE NO. 3-5. POWER 28 VDC SAS Indicator Light Does Not Go On When POWER 28 VDC SAS Circuit Breaker Is Pushed In.

TM 1-6625-735-14

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. (Cont)

TEST OR INSPECTION

CORRECTIVE ACTION

Step 2. If voltage is not present, replace circuit breaker CB2.

TABLE NO. 3-5. POWER 28 VDC SAS Indicator Light Does Not Go On When POWER 28 VDC SAS

Circuit Breaker Is Pushed In.

TEST OR INSPECTION

CORRECTIVE ACTION

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

Step 1. If voltage is present, replace lamp DS1.

Step 2. If voltage is not present, replace circuit breaker CB1.

Multimeter Does Not Indicate -15.15 6 0.15 Vdc When POWER 115 VAC 400 Hz

TABLE NO. 3-6.

Test Set Circuit Breaker Is Pushed In.

TEST OR INSPECTION

CORRECTIVE ACTION

NOTE

The test set has separate grounds, identified

as PWR GND and SIG GND, which are not

connected inside the test set. Ground circuits

are switched through relay K1, contacts B1

and B3. A burnt or open contact will cause

erroneous indication at ac input of PS1.

1. Disconnect connector P1 of locally made cable from connector J1 of test set.

Go to 2.

2. Connect multimeter between POWER +15 VDC and SIG GND test jacks. Go to 3.

3. Push in POWER 115 VAC 400 Hz TEST SET circuit breaker. Go to 4.

4. Multimeter shall indicate 15 6 0.15 vdc.

Step 1. If voltage is present, go to 11.

Step 2. If voltage is not present, go to 5.

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