TM 1-1520-238-T-7 11–291 11–62. ALL NO-GO MESSAGES EXCEPT GROUP D NO-GO – APPEARS ON HOD 11–62 Tools: Nomenclature Part Number Tool Kit, Electrical SC518099CLA06 Repairer’s Multimeter, Digital AN/PSM-45 Personnel Required: 68X Armament/Electrical Systems Repairer One person to assist References: TM 1-1520-238-T-6 TM 1-1520-238-23 Equipment Conditions: Ref Condition TM 1-1520-238-23 Access provisions – R295 door open WARNING Turn off power before detaching or attaching wires and connectors. High current 28 VDC or 115 VAC is present. Failure to do so could result in death or serious injury. 1. Check for 28 VDC at P686–118. Is voltage present? YES (ACA) Replace DASEC (TM 1-1520-238-23). (ACB) Go to step 5. NO Go to step 2. 2. Check for open between (A402)TB2–7–K and P686–118. Does open exist? YES Go to step 4. NO Go to step 3. 3. Check for open between (A402): TB2–7–D and J1–34. Does open exist? YES Repair open wire. Go to paragraph 11–23. NO Refer toTM 1-1520-238-T-6 to troubleshoot circuit protection system (dc essential bus 3 – pilot station). 4. Check for open between (A402): K4–1/2–B2 and J27–B4. Does open exist? YES Repair open wire. Go to paragraph 11–23. NO Go to step 6. 5. (ACB) Detach filter adapter A707. Check for open through pin A707–118. Does open exist? YES Replace filter adapter (TM 1-1520-238-23). NO Replace DASEC (TM 1-1520-238-23). 6. Check for open between (A402): TB2–7–K and K4–1/2–B3. Does open exist? YES Repair open wire. Go to paragraph 11–23. NO Replace relay (A402)XK4–1/2 (TM 1-1520-238-23). END OF TASK