JBL service manual Detailed Troubleshooting Contd, E250P/P12SW subwoofers, Flow Chart

Contents Powered Subwoofers Northridge E-SeriesE250P Performance Series P12SWModels 250 Crossways Park DrE250P, P12SW SPECIFICATIONS CONTENTSE250P/P12SW subwoofers 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 SubwooferDigital Receiver/Processor - LFE Connection E250P/P12SW subwoofersAnalog Receiver/Processor - Line-LevelConnections OPERATION PowerCrossover Adjustments E250P/P12SW subwoofersE250P/P12SW subwoofers TROUBLESHOOTINGPhase Control 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-PassE250P/P12SW subwoofers DETAILED TROUBLESHOOTING CONTDFLOW CHART E250P/P12SW subwoofers E250P/P12SW subwoofers E250P/P12SW subwoofers E250P/P12SW subwoofers Resistors E250P/P12SW 120v Electrical Parts ListE250P/P12SW subwoofers E250P/P12SW subwoofers Part NumberCapacitors SemiconductorsMiscellaneous E250P/P12SW subwoofersPart Number 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 TONOT CIRCUIT GROUND E250P/P12SW subwoofersNOTE THIS VOLTAGE IS REFERENCED TO