Panasonic PT-50LCZ70 Service Manual

Also see for LIFI PT-50LCZ7: Operating instruction Operating instructions Service manual

Contents

DT+9V line error.Communication error between Peaks (IC8001) andTV microcontroller (IC6004) on the Main P.C.B.SUB+5V line error.MAIN+3.3V line error.AUDIO AMP (IC4501) failureCommunication error between Peaks (IC8001) andTV microcontroller (IC6004) on the Main P.C.B.Problem Possible SolutionHow to solve problems indicated by the Error Indication(The symptom of all errors is that the Lamp goes off)Note: Before performing troubleshooting, confirm that all connector cables in the unit are connected correctly.The following voltage lines on the Main P.C.B. is overcurrent.• SUB+5V line• SUB+1.8V line• SUB+3.3V line• SUB+1.2V line• DDR+3.3V line• FHD+1.2V lineThe following voltage lines on the Main P.C.B. is overvoltage.• DT+9V line• SUB+5V line• SUB+1.8V line• SUB+3.3V line• SUB+1.2V line• DDR+3.3V line• FHD+1.2V line[POWER Indicator one blink][POWER Indicator two blinks][POWER Indicator three blinks][POWER Indicator four blinks][POWER Indicator six blinks][POWER Indicator seven blinks][POWER Indicator nine blinks]POWERIndicator12346791. Replace the OPT/TV Unit.1. Replace the Power P.C.B.2. If still NG, replace the OPT/TV Unit.1. Check that Connector CN1102 (Thermal Fuse) on the Main P.C.B. is connected firmly.2. If still NG, replace the Power P.C.B.3. If still NG, replace the OPT/TV Unit.PT-50LCZ70 / PT-56LCZ70 / PT-61LCZ70 / PT-50LCZ7 / PT-56LCZ7 / PT-61LCZ726