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TM 11-6625-2976-40
2-7. TROUBLESHOOTING TABLE. (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
9. Marker beacon performance test failure. (Cont)
Step 3.
Check circuit card assembly A6 alinement.
Realine A6R110 and A6R1 19, using test points in marker beacon section
of circuit card assembly A6 adjustment procedures (para 2-12). If un-
able to adjust, replace circuit card assembly A6 (para 2-19).
10. Battery charger performance test failure.
Step 1.
Check for 115 vac input voltage at points 2 and 3 on transformer T1 (FO-8).
If 115 vac is not present, replace battery charger power cable (para
2-41). if 115 vac is present and lamp DS1 is not lit, replace lamp DS1
Step 2.
Check for 23 vac at points 5 and 6 on circuit card A1 (FO-8).
if 23 vac is not present, replace transformer T1 (para 2-38).
Step 3.
Check for +9.2 vdc at point E1 on circuit card A1 (FO-8).
Adjust R3 on circuit card A1 for +9.2 vdc. if R3 does not adjust to +9.2
vdc, replace circuit card A1 (para 2.39).
Step 4.
Check for -9.2 vdc at point E2 on circuit card A1 (FO-8).
Adjust R4 on circuit card A1 for -9.2 vdc, if R4 does not adjust to -9.2
vdc, replace circuit card A1 (para 2-39).
Step 5.
Check wiring for continuity and proper connections on supply cable (FO-8).
Replace low-voltage supply cable (para 2-42).
2-38

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