TM 1-1520-238-T-7 11–118 11–14. FORCE TRIM – DOES NOT DISENGAGE (cont) 11–14 7. Check for 28 VDC at (A402)TB3–9–L. Is voltage present? YES Repair open wire between (A402): TB3–9–L and J11–B7. Go to paragraph 11–12. NO Repair open wire between (A402): TB3–9–K and J24–B10. Go to paragraph 11–12. 8. Detach P463. Check for 28 VDC at (A76)J1–Y. Is voltage present? YES Repair open wire between P463–Y and P441–B10. Go to paragraph 11–12. NO Refer to TM 1-1520-238-T-6 to troubleshoot TRIM pilot circuit breaker (CB87), circuit protection system (dc emergency bus – pilot station). 9. Check for open between P423–B7 and P423–B16. Does open exist? YES Go to step 13. NO Go to step 10. 10. Attach P423. Check for 28 VDC at (A402)TB3–7/8–B. Is voltage present? YES Go to step 11. NO Repair open wire between (A402): TB3–7/8–B and J11–B16. Go to paragraph 11–12. 11. Check for 28 VDC at (A402)TB3–7/8–G. Is voltage present? YES Repair open wire between (A402): TB2–28–H and TB3–7/8–G. Go to paragraph 11–12. NO Go to step 12. 12. Detach and tag wires from (A402): TB2–28–G, TB2–28–H andTB2–28–J. Wth relay (A402)XK1–9/10 removed, check for short between (A402): TB3–7/8–F and ground, TB3–7/8–G and ground, K1–9/10–X1 and ground. Does short exist? YES Repair shorted wire between (A402): TB3–7/8–F and TB2–28–G, TB3–7/8–G and TB2–28–H, TB2–28–J and K1–9/10–X1. Go to paragraph 11–12. NO Go to step 14. 13. Detach (A401)P113. Check for open between (A401): P113–A9 and P113–A10, P113–A9 and P113–A11. Does open exist? YES Replace FORCE TRIM switch (A401)S–3 (TM 1-1520-238-23). NO Repair open wire between: J113–A9 and P423–B7, J113–A10 and P423–B16, J113–A11 and P423–B15. Go to paragraph 11–12. 14. Attach wires to (A402): TB2–28–G, TB2–28–H, and TB2–28–J. With relay (A402)XK–9/10 installed, check for short between (A402)TB2–28–J and ground. Does short exist? YES Replace relay (A402)XK–9/10 (TM 1-1520-238-23). NO Replace terminal board (A402)TB3–7/8 (TM 1-1520-238-23). END OF TASK