Troubleshooting, E250P/P12SW subwoofers, Phase Control

Contents 250 Crossways Park Dr Powered SubwoofersNorthridge E-SeriesE250P Performance Series P12SW ModelsE250P, P12SW SPECIFICATIONS CONTENTSE250P/P12SW subwoofers Critical Components List of Safety ComponentsRequiring Exact Replacements Leakage/Resistance CheckPackaging E250PPackaging P12SWE250P/P12SW subwoofers JBL E250P/P12SW Powered Sub/ Plate AmpQA Test SPEAKER CONNECTIONSpecification E250P/P12SW subwoofersSubwoofer ing any other wires. Do not twist togetherE250P/P12SW subwoofers important that you avoid joinDigital Receiver/Processor - LFE Connection E250P/P12SW subwoofersAnalog Receiver/Processor - Line-LevelConnections E250P/P12SW subwoofers OPERATIONPower Crossover AdjustmentsE250P/P12SW subwoofers TROUBLESHOOTINGPhase Control Exploded View E250PExploded View P12SWSweep Function TEST SET-UPAND PROCEDUREE250P/P12SW subwoofers General Function UUT = Unit Under TestP10SW &P12SW E250P/P12SW subwoofersE250P subwoofer Service BulletinPB10,PB12 Revision For models E150P,E250PTIP# JBLTT2003-04Rev2 P10SW, P12SW4. Check Switching Frequency DETAILED TROUBLESHOOTINGA. Power Amp Section 2. Power Up LED RED3. Low-Pass DETAILED TROUBLESHOOTING CONTDE250P/P12SW subwoofers 2. High Level Input SensitivityE250P/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 Semiconductors E250P/P12SW subwoofersPart Number CapacitorsMiscellaneous E250P/P12SW subwoofersPart Number Part Number E250P/P12SW subwoofersE250P/P12SW subwoofers Semiconductor Pinout DiagramsNOTE THIS VOLTAGE IS REFERENCED TO See service bulletin for E250PE250P/P12SW subwoofers P12SW Value of C65 = 47ufNOT CIRCUIT GROUND E250P/P12SW subwoofersNOTE THIS VOLTAGE IS REFERENCED TO