TM 1-1520-238-T-7
11–312
11–76.
26 VAC EXCITATION XFMR 1 NO-GO AFT AVIONICS BAY –
11–76
APPEARS ON HOD (cont)
19. Check for short between P693–5 and ground.
Does short exist?
YES
Repair shorted wire between:
P693–5 and P445–A5,
J445–A5 and P413–A1.
Go to paragraph 11–23.
NO
Go to step 22.
20. Check for short between P493–A19 and ground.
Does short exist?
YES
Repair shorted wire between
P493–A19 and J408–1.
Go to paragraph 11–23.
NO
Go to step 23.
21. Detach wire from (A323)TB3–6–F. Check for
short between wire end and ground.
Does short exist?
YES
Repair shorted wire between
(A323):
TB3–6–A and J4–A19,
TB3–6–E and J4–A7,
TB3–6–J and J4–A5.
Go to paragraph 11–23.
NO
Repair shorted wire between
(A323):
TB3–6–F and TB2–1–L,
TB2–K and J5–A13.
Go to paragraph 11–23.
22. Check for short between P693–7 and ground.
Does short exist?
YES
Repair shorted wire between:
P693–7 and P445–A7,
J445–A7 and P413–A2.
Go to paragraph 11–23.
NO
Repair shorted wire between:
P693–11 and J417–1,
P693–13 and J415–1,
P693–15 and J408–1,
P693–17 and J215–1.
Go to paragraph 11–23.
23. Check for short between P493–A7 and ground.
Does short exist?
YES
Repair shorted wire between
P493–A7 and J415–1.
Go to paragraph 11–23.
NO
Go to step 24.
24. Check for short between P493–A5 and ground.
Does short exist?
YES
Repair shorted wire between
P493–A5 and J417–1.
Go to paragraph 11–23.
NO
Go to step 25.
25. Check for short between wire end (A323)TB3–6
and P688–69.
Is voltage present?
YES
Repair shorted wire between:
J402–B11 and P499–A19,
P402–B11 and J756–A8,
P756–18 and J215–1.
(A323):
J5–A19 and TB3–6–B.
Go to paragraph 11–23.
NO
Go to step 26.
26. Check for short between P413–A5 and ground.
Is voltage present?
YES
Repair shorted wire between:
J459–B3 and P413–A5,
P499–B16 and P459–B3.
(A323):
J5–B16 and TB3–6–K.
Go to paragraph 11–23.
NO
Repair shorted wire between:
P472–B3 and P236–A,
P413–A1 and P237–A,
P472–B1 and P235–A,
P413–A3 and P234–A.
(A326):
J10–A5 and TB1–18–E,
J15–B3 and TB1–18–B,
J10–A1 and TB1–18–D,
J15–B1 and TB1–18–A,
J10–A3 and TB1–18–C.
Go to paragraph 11–23.
END OF TASK
