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1414DVD-910FLOW CHART NO.7P-ON+5V is not outputted. (P-ON+9V is outputted normally.)Is the "H" pulse inputted into the base of Q1004?Replace Q1004.Check R1068 and D1046, and service it if defective.YesNoFLOW CHART NO.8P-ON+3.3V is not outputted. (P-ON+9V is outputted normally.)Is 3.3V voltage supplied to the collector of Q1011?Replace Q1011 and R1067.Check D1008, D1015, C1007, C1038, L1007 andthe periphery circuit, and service it if defective.YesNoFLOW CHART NO.9EV+5V is not outputted.Is EV+9V outputted normally?Check Q1014, D1047 and the periphery circuit,and service it if defective.Refer to "FLOW CHART NO.6"YesNoFLOW CHART NO.6P-ON+9V (EV+9V) is not outputted.Is 9V voltage supplied to the emitter of Q1002?Is the voltage of base on Q1002 lower than thevoltage of emitter on Q1002 when turning the power on?Replace Q1002.Check D1030, D1048, C1035, C1048, L1009 andthe periphery circuit, and service it if defective.Check Q1016 and PWRCON line and service it ifdefective.YesYesNoNoFLOW CHART NO.10EV+1.5V is not outputted.Is 2.5V voltage supplied to Pin(1) of IC1002?Is 1.25V voltage supplied to Pin(4) of IC1002?Replace IC1002. Replace IC2002.Check the circuit between Pin(19)of IC2002 and Pin(4) of IC1002,and service it if defective.Check D1006, C1014, C1050, L1008 and theperiphery circuit, and service it if defective.Is the "L" pulse outputted into Pin(19) of IC2002?YesYes Yes NoNoNoFLOW CHART NO.11EV+3.3V is not outputted.Is 3.3V voltage supplied to emitter of Q1010?Is the "L" pulse inputted to base of Q1012?Check Q1010, Q1012, R1087 and R1088, andservice it if defective.Replace IC2002.Check the circuit between Pin(19)of IC2002 and base of Q1012,and service it if defective.Check D1030, D1048, C1035, C1048, L1009 andthe periphery circuit, and service it if defective.Is the "L" pulse outputted into Pin(19) of IC2002?YesYes Yes NoNoNowww. xiaoyu163. comQQ 376315150 992894298TEL 13942296513 992894298051513673QQTEL 13942296513 QQ 376315150 892498299TEL 13942296513 QQ 376315150 892498299http://www.xiaoyu163.comhttp://www.xiaoyu163.com PreviousNext |