TM 1-1520-238-T-6 9–445 9–191. SHORT – EXISTS BETWEEN: P3–D, P3–E, P3–F OR P4–A, P4–B, P4–C AND 9–191 GROUND Tools: Nomenclature Part Number Tool Kit, Electrical SC518099CLA06 Repairer’s Multimeter, Digital AN/PSM-45 Personnel Required: 68X Armament/Electrical Systems Repairer Equipment Conditions: Ref Condition Paragraph 9–149 Pilot circuit breaker panel accessing completed Paragraph 9–148 All ac essential bus 2 pilot station circuit breakers open 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 short between: P4-A and ground, P4-B and ground, P4-C and ground. Does short exist? YES Repair shorted wire between: P4-A and CB4-A1, P4-B and CB4-B1, P4-C and CB4-C1. Go to paragraph 9–189. NO Go to step 2. 2. Check for short between P3-D and ground. Does short exist? YES Go to step 3. NO Go to step 4. 3. Detach wire ends at CB78-A1 and CB78-B1. Check for short between: P3-D and ground, P3-E and ground. Does short exist? YES Repair shorted wire between: P3-D and CB78-A1, P3-E and CB78-B1. Go to paragraph 9–189. NO Repair shorted wire between: CB78-A1 and CB78-B1, CB75-A1 and CB75-B1, CB88-A1 and CB88-B1. Go to paragraph 9–189. 4. Detach wire ends at CB78-C1. Check for short between P3-F and ground. Does short exist? YES Repair shorted wire between P3-F and CB78-C1. Go to paragraph 9–189. NO Go to step 5. 5. Attach CB78. Detach wire ends at CB75-C1. Check for short between P3-F and ground. Does short exist? YES Repair shorted wire between CB78-C1 and CB75-C1. Go to paragraph 9–189. NO Repair shorted wire between: CB75-C1 and CB88-C1, CB88-C1 and CB44-1, CB44-1 and CB86-1. Go to paragraph 9–189. END OF TASK