Sanyo LCD-20XR1/AU Service Manual

Contents

1 Alignment equipmentPM5518 (video signal generator)K-7253 (VGA signal generator)CA210 (white balancer)IF signal generatorSignal generatorOscillograph2 Alignment flow-chartThe alignment flow-chart is shown as Fig-1Fig-1 adjustment flow-chart3 Unit adjustments3.1 Flash writing programsWritten memory N300 and N400.3.2 Check power supply boardTurn off between power supply board and main board, after plug in power, testing X702 (pin1 andpin5) power supply board voltage to be 12v and 5v.3.3 main board adjustment3.3.1 IF amplifier adjustmenta. Turn off the J201, J202, J203, J204, J205 and J5, input 38MHz(PAL SYSTEM) and 45.75MHz(NWrite memory N300 and N400To produce main board and power supply boardCheck power supply board and main adjustmentAll testingConnect with central signal source, then check each function of TV(Stationmissing, system identification, analog control etc.) , check the output of speakerInput AV/S-video signal, and then check each function of AV/S-videoInput YPrPb signal and see if the display is normal under PC statusand check various functions (analog control), line/field center etc.Check the accessories and pack them in boxAlignment instruction3ALIGNMENT INSTRUCTION