TM 1-1520-238-T-7
11–308
11–75. BUCS TRACER NO-GO – APPEARS ON HOD (cont)
11–75
8. Check for open between J266–5 and P686–51.
Does open exist?
YES
Repair open wire between:
J266–5 and P237 SP1,
P237 SP1 and J447–B13,
P447–B13 and P686–51.
Go to paragraph 11–23.
NO
Replace CPG lateral SPAD
(TM 1-1520-238-23).
9. Check for 28 VDC at P413–B14.
Is voltage present?
YES
Repair open wire between:
P413–B5 and J266–1.
(A326):
J10–B14 and TB1–21–F,
TB1–21–L and J10–B5.
Go to paragraph 11–23.
NO
Repair open wire between:
P413–B14 and P441–B2.
(A402):
J24–B2 and TB2–3–C.
Go to paragraph 11–23.
10. Check for 28 VDC at P686–52.
Is voltage present?
YES
Go to step 13.
NO
Go to step 11.
11. Check for 28 VDC at J273–1.
Is voltage present?
YES
Go to step 12.
NO
Repair open wire between:
P472–A17 and J273–1.
(A326):
J15–A17 and TB1–21–K.
Go to paragraph 11–23.
12. Check for open between J273–5 and P686–52.
Does open exist?
YES
Repair open wire between:
J273–5 and P235 SP1,
P235 SP1 and P236 SP1,
P236 SP1 and P912–B16,
J912–B16 and J447–B10,
J447–B10 and P686–52.
Go to paragraph 11–23.
NO
Replace CPG directional SPAD
(TM 1-1520-238-23).
13. Check for 28 VDC at P686–53.
Is voltage present?
YES
Go to step 14.
NO
Repair open wire between:
P235 SP1 and P912–B13,
J912–B13 and J447–B16,
P447–B16 and P686–53.
Go to paragraph 11–23.
14. Check for 28 VDC at P686–54.
Is voltage present?
YES
(ACA) Replace DASEC
(TM 1-1520-238-23).
(ACB) Go to step 15.
NO
Repair open wire between:
P234 SP1 and J447–B19,
P413–B13 and P234 SP1,
P447–B19 and P686–54.
(A326):
J10–B13 and TB1–21–M.
Go to paragraph 11–23.
