JBL P12SW service manual Service Bulletin, E250P subwoofer

Contents Powered Subwoofers Northridge E-SeriesE250P Performance Series P12SWModels 250 Crossways Park DrE250P/P12SW subwoofers CONTENTSE250P, P12SW SPECIFICATIONS List of Safety Components Requiring Exact ReplacementsLeakage/Resistance Check Critical ComponentsE250P PackagingP12SW PackagingJBL E250P/P12SW Powered Sub/ Plate Amp E250P/P12SW subwoofersSPEAKER CONNECTION SpecificationE250P/P12SW subwoofers QA Testing any other wires. Do not twist together E250P/P12SW subwoofersimportant that you avoid join SubwooferAnalog Receiver/Processor - Line-LevelConnections E250P/P12SW subwoofersDigital Receiver/Processor - LFE Connection OPERATION PowerCrossover Adjustments E250P/P12SW subwoofersPhase Control TROUBLESHOOTINGE250P/P12SW subwoofers E250P Exploded ViewP12SW Exploded ViewTEST SET-UPAND PROCEDURE E250P/P12SW subwoofersGeneral Function UUT = Unit Under Test Sweep FunctionE250P/P12SW subwoofers P10SW &P12SWService Bulletin E250P subwooferFor models E150P,E250P TIP# JBLTT2003-04Rev2P10SW, P12SW PB10,PB12 RevisionDETAILED TROUBLESHOOTING A. Power Amp Section2. Power Up LED RED 4. Check Switching FrequencyDETAILED TROUBLESHOOTING CONTD E250P/P12SW subwoofers2. High Level Input Sensitivity 3. Low-PassFLOW CHART DETAILED TROUBLESHOOTING CONTDE250P/P12SW subwoofers E250P/P12SW subwoofers E250P/P12SW subwoofers E250P/P12SW subwoofers E250P/P12SW subwoofers E250P/P12SW subwoofers E250P/P12SW 120v Electrical Parts ListResistors E250P/P12SW subwoofers Part NumberCapacitors SemiconductorsPart Number E250P/P12SW subwoofersMiscellaneous E250P/P12SW subwoofers Part NumberSemiconductor Pinout Diagrams E250P/P12SW subwoofersSee service bulletin for E250P E250P/P12SW subwoofersP12SW Value of C65 = 47uf NOTE THIS VOLTAGE IS REFERENCED TONOTE THIS VOLTAGE IS REFERENCED TO E250P/P12SW subwoofersNOT CIRCUIT GROUND