9139. CPG INTR LT PANEL EDGE-LIGHT DOES NOT LIGHT

9138. ALL CPG INSTRUMENT EDGE-LIGHTED PANELS DO NOT LIGHT

9140. ALL CHANNEL 1 NO. 1 EDGE-LIGHT PANELS DO NOT LIGHT

TM-1-1520-238-T-6 Army Model AH-64 Helicopter (NSN
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TM 1-1520-238-T-6 9–363 9–139. CPG INTR LT PANEL EDGE-LIGHT – DOES NOT LIGHT 9–139 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 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 between (A326): TB1-47-D and TB1-47-K. Is voltage present? YES Go to step 2. NO Go to step 3. 2. Check for open between: (A326)TB1-47-D and P101-B11, (A326)TB1-47-K and P101-B12. Does open exist? YES Repair open wire. Go to paragraph 9–132. NO Replace CPG INTR LT panel (TM 1-1520-238-23). 3. Check for 5 VDC between (A326): TB1-47-A and TB1-47-G. Does open exist? YES Replace terminal board (A326)TB1-47 (TM 1-1520-238-23). NO Go to step 4. 4. Check for open between: (A326)TB1-47-A and P110-AA, (A326)TB1-47-G and P110-EE. Does open exist? YES Repair open wire. Go to paragraph 9–132. NO Replace multi-channel dimming controller (TM 1-1520-238-23). END OF TASK

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