Quantcast TABLE NO. 3-38. API Does Not Indicate From -180.0 To Zero Or From Zero To 179.999 When ROLL ATT Control Is Turned Clockwise One Full Turn From Zero To Zero.

 

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Table 3-37. Test Set Indicator Lamps Do Not Go On When 28 Vdc Power Is Jumpered To Test Point/Connector Contact Listed
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TM-1-6625-735-14 Test Set Stabilization System P/N 70700-20650-050 Manual
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TABLE NO. 3-39. API Does Not Indicate 180 6 0.2 When ROLL ATT Control Is Turned Clockwise One Full Turn From Zero To Zero.
TM 1-6625-735-14
TABLE NO. 3-38. API Does Not Indicate From -180.0 To Zero Or From Zero To 179.999 When
ROLL ATT Control Is Turned Clockwise One Full Turn From Zero To Zero.
TEST OR INSPECTION
CORRECTIVE ACTION
1. Pull out test set circuit breakers CB1, CB2, CB3, and CB4. Go to 2.
2. Disconnect P1 and P2 of locally-made test cable from test set connectors J1 and J2.
Go to 3.
3. Make the following connections between SAS/Stabilator test set and Angle Position
Indicator (API). Go to 4.
Test Set Test Points (API Input)
115 VAC 400 HZ SAS (REF. HI)
PWR GND (REF. LO)
ROLL ATT SIM X (S1)
ROLL ATT SIM Y (S3)
ROLL ATT SIM Z (S2)
4. Place API mode select switch to SYNC. Go to 5.
5. Push in POWER 28 VDC circuit breaker CB3. Go to 6.
6. Place test set ROLL ATT control to SIM 1. Go to 7.
7. Slowly turn test set ROLL ATT control clockwise one full turn from zero to zero.
API shall indicate from -179.999 to zero and then from zero to 179.999
Step 1. If API indication is 0, replace transformer T1.
Step 2. If API indication is not correct, go to 8.
8. Check switch S19 for continuity.
Step 1. If continuity exists, replace synchro B1.
Step 2. If continuity does not exist, replace switch S19.
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