TM 1-1520-238-T-4 4–115 4–34. CPG ENGINE CHOP INDICATOR – DOES NOT LIGHT WITH CPG COLLECTIVE STICK 4–34 IN CHOP Tools: Nomenclature Part Number Tool Kit, Electrical SC518099CLA06 Repairer’s Multimeter, Digital AN/PSM-45 Personnel Required: 68F Aircraft Electrician One person to assist References: TM 1-1520-238-23 Equipment Conditions: Ref Condition TM 1-1520-238-23 Non–transparent barrier removed 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 5 VDC at (A326)TB1–51–A. Is voltage present? YES Go to step 3. NO Go to step 2. 2. Check for open between: (A326)TB1–51–A and (A326)J18–A7, P482–A7 and P31–a. Does open exist? YES Repair open wire. (Engine 1) Go to paragraph 4–12. (Engine 2) Go to paragraph 4–13. NO Replace CPG caution/warning panel (TM 1-1520-238-23). 3. At CPG collective stick, check for 28 VDC at J108–K. Is voltage present? YES Go to step 4. NO Repair open wire between J108–K and (326)TB2–29–W. (Engine 1) Go to paragraph 4–12. (Engine 2) Go to paragraph 4–13. 4. Check for open between: J108–P and P977–A7, J108–L and ground, J108–M and P977–A8, J108–H and P978–A7, J108–F and P978–A8. Does open exist? YES Repair open wire. (Engine 1) Go to paragraph 4–12. (Engine 2) Go to paragraph 4–13. NO Go to step 5. 5. With CPG collective stick grip in CHOP position, check for open between: P108–K and P108–P, P108–K and P108–H, P108–L and P108–M, P108–L and P108–F. Does open exist? YES Replace CPG collective stick (TM 1-1520-238-23). NO Replace start mode relay panel (TM 1-1520-238-23). END OF TASK