11128. MAN STAB MOVES DOWN BUT NOT UP

11129. CPG RESET INOPERATIVE STAB POS INDICATORS NOT 19 2 ND

TM-1-1520-238-T-7 Army Model AH-64 Helicopter (NSN
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TM 1-1520-238-T-7 Change 5 11–429 11–128. MAN STAB MOVES DOWN BUT NOT UP 11–128 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 1-1520-238-23 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. Open STAB MAN DC (A76)CB6, STAB AUTO DC (A76)CB3, STAB AUTO AC (A76)CB2, and ENG WARN (A76)CB52 circuit breakers. Detach P431 from (A402)J27. Check for open between (A402): TB2–21–B and J27–B10. Does open exist? YES Repair open wire. Go to paragraph 11–88. NO Go to step 2. 2. Detach P1077 from (A329)J1. Check for open between P431–B10 and P1077–L. Does open exist? YES Repair open wire. Go to paragraph 11–88. NO Go to step 3. 3. Check for open between (A329): J1–L and TB1–1/2–C. Does open exist? YES Repair open wire. Go to paragraph 11–88. NO Go to step 4. 4. Set multimeter to diode setting. Place black meter lead on (A329)TB1–1/2–H. Check for open between (A329): TB1–1/2–C and TB1–1/2–H. Does open exist? YES Repair open wire. Go to paragraph 11–88, or replace diode (TM 1-1520-238-23). NO Repair open wire between (A329): TB1–1/2–H and TB1–3–H. Go to paragraph 11–88. END OF TASK

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