9403. PILOT ENGINE 2 OUT INDICATOR IS NOT LIGHTED WITH ENGINE 2 NOT RUNNING

9402. CPG ENGINE 1 OUT INDICATOR DOES NOT RESET AUDIO WARNING

9404. PILOT ENGINE 2 OUT INDICATOR DOES NOT RESET AUDIO WARNING

TM-1-1520-238-T-6 Army Model AH-64 Helicopter (NSN
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TM 1-1520-238-T-6 9–765 9–403. PILOT ENGINE 2 OUT INDICATOR – IS NOT LIGHTED WITH ENGINE 2 NOT RUNNING 9–403 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. Check for 28 VDC between J164-A11 and J164-A12. Is voltage present? YES Replace pilot master caution/warning panel (TM 1-1520-238-23). NO Go to step 2. 2. Check for open between: J164-A11 and P20-N, J164-A12 and P20-P. Does open exist? YES Repair open wire. Go to paragraph 9–395. NO Go to step 3. 3. Check for 28 VDC at P20-c. Is voltage present? YES Replace pilot caution/warning panel (TM 1-1520-238-23). NO Go to step 4. 4. Check for open between P20-c and P49-15. Does open exist? YES Go to step 5. NO Replace engine out warning unit (TM 1-1520-238-23). 5. Detach wires from (A326): TB1-51-K and TB1-51-M. Check for open between: P20-c and P482-A14, P435-A4 and P49-15. Wire end at (A326): TB1-51-K and J18-A14, TB1-51-M and J7-A4. Does open exist? YES Repair open wire. Go to paragraph 9–395. NO Replace terminal board (A326)TB1-51 (TM 1-1520-238-23). END OF TASK

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