TM 1-1520-238-T-7
11–327
11–81. COLL ACTUATOR NO-GO – APPEARS ON HOD (cont)
11–81
8. Check for open between:
P688–30 and P228–15,
P688–29 and P266–14.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–23.
NO
Replace collective servocylinder
(TM 1-1520-238-23).
9. Check for 28 to 42 ohms between P688–45 and
P688–46.
Is resistance present?
YES
Go to step 11.
NO
Go to step 10.
10. Check for open between:
J227–3 and P688–45,
J227–4 and P688–46.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–23.
NO
Replace collective servocylinder
(TM 1-1520-238-23).
11. Check for 28 to 42 ohms between P686–57 and
P686–58.
Is resistance present?
YES
Go to step 13.
NO
Go to step 12.
12. Check for open between:
P686–58 and J417–4,
P686–57 and J417–3.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–23.
NO
Replace collective servocylinder
(TM 1-1520-238-23).
13. Check for 73 to 91 ohms between:
(ACA) Wire ends (A323)TB3–7–E and GS1–E.
(ACB) P694–15 and P694–16.
Is resistance present?
YES
Go to step 15.
NO
Go to step 14.
14. Check for open between:
(ACA) P228–6 and (A323)TB3–7–E,
P228–7 and GS1–E.
(ACB) P228–6 and P694–15,
P228–7 and P694–16.
Does open exist?
YES
Repair open wire.
Go to paragraph 11–23.
NO
Replace collective servocylinder
(TM 1-1520-238-23).
15. Check for 292 to 438 ohms between:
(ACA) Wire ends (A323)TB3–7–F and GS1–F.
(ACB) P694–17 and P694–18.
Is resistance present?
YES
Go to step 17.
NO
Go to step 16.
16. Check for open between:
(ACA) J227–1 and (A323)TB3–7–F,
J227–2 and GS1–F.
(ACB) J227–1 and P694–17,
J227–2 and P694–18.
Does open exist?
YES
Go to step 18.
NO
Replace collective servocylinder
(TM 1-1520-238-23).
17. Check for 292 to 438 ohms between:
(ACA) Wire ends (A323)TB3–6–J and GS3–C.
(ACB) P693–11 and P693–12.
Is resistance present?
YES
(ACA) Replace DASEC
(TM 1-1520-238-23).
(ACB) Go to step 19.
NO
Go to step 18.
