TM 1-1520-238-T-5 Change 7 8–111 8–43. CPG TORQUE INDICATOR – DOES NOT INDICATE FULL SCALE OR SHOW DIGITAL 888 OR 8–43 VERTICAL SCALE INDICATORS HAVE EVERY OTHER LAMP NOT LIGHTED (HELICOPTERS WITHOUT CPG DIM/TEST PANEL INSTALLED) Tools: Nomenclature Part Number Tool Kit, Electrical SC518099CLA06 Repairer’s Multimeter, Digital AN/PSM-45 Personnel Required: 68X Armament/Electrical Systems Repairer (2) References: TM 1-1520-238-23 Equipment Conditions: Ref Condition TM 1-1520-238-23 Access provisions – L40 cover 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 CPG TORQUE indicator. Are both vertical displays and digital readouts blanked out? YES Go to step 3. NO Go to step 2. 2. With test switch on CPG SDD panel depressed, check for open between P74–17 and ground. Does open exist? YES Repair open wire between: P74–17 and P73 SP1. Go to paragraph 8–10. NO Go to step 3. 3. Check for open between: P74–9 and ground, P74–10 and ground, P74–11 and ground. Does open exist? YES Repair open wire between: GS245–A and P74–9, GS245–B and P74–10, GS255–C and P74–11, Go to paragraph 8–10. NO Go to step 4. 4. Check CPG TORQUE indicator for voltages as follows: P74–7 for 2 to 5 VDC, P74–8 for 2 to 5 VDC, P74–12 for 5 VDC, P74–13 for –8 VDC, P74–14 for 8 VDC. Are voltages present? YES Replace CPG TORQUE indicator (TM 1-1520-238-23). NO Go to step 5. 5. Check for open between: P74–7 and P401–26, P74–8 and P401–32, P74–12 and P401–20, P74–13 and P401–9, P74–14 and P401–1. Does open exist? YES Repair open wire. Go to paragraph 8–10. NO Replace SDC (TM 1-1520-238-23). END OF TASK