TM 1-1520-238-T-6 9–483 9–219. CPG CBR BLWR CIRCUIT BREAKER (CB5) – DOES NOT STAY CLOSED 9–219 OR 28 VDC IS NOT PRESENT BETWEEN P997-A AND P997-B 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 3-4240-312-12&P 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. On CPG circuit breaker panel 2, close CBR BLWR circuit breaker (CB5). Does CBR BLWR circuit breaker (CB5) stay closed? YES Go to step 4. NO Go to step 2. 2. Detach P997 and check for short between P997-A and ground. Does short exist? YES Go to step 3. NO Refer to TM 3-4240-312-12&P to troubleshoot CBR blower system. 3. Check for short between P1-K and ground. Does short exist? YES Repair shorted wire between J764-K and P997-A. Go to paragraph 9–215. NO Repair shorted wire between P1-K and CB5-2. Go to paragraph 9–215. 4. Check for 28 VDC at P997-A. Is voltage present? YES Go to step 6. NO Go to step 5. 5. Check for 28 VDC at (A402)J32-K. Is voltage present? YES Repair open wire between P461-K and P997-A. Go to paragraph 9–215. NO Go to paragraph 9–23 to troubleshoot dc electrical power generation. 6. Check for open between P997-B and ground. Does open exist? YES Repair open wire between P997-B and ground. Go to paragraph 9–215. NO Refer to TM 3-4240-312-12&P to troubleshoot CBR blower system. END OF TASK