ADJUSTMENT AND REPAIR PROCEDURES
INSTRUMENTSResolution >0,1Vual adjustment
145V (0.5V in CRTs Videocolor W66EGV023X015147V (0.5V in CRTs Videocolor W76EGV023X015Adjust to obtain the right white toneVisual adjustmentAdjust to obtain the best possible focusing in the centre of screenpattern matches the beginning of the service blankingway that vertical lateral lines become straightcorner in the way that vertical lateral lines become straightway that vertical lateral lines become straightcorner in the way that vertical lateral lines become straightway that vertical lateral lines become straightcorner in the way that vertical lateral lines become straight
VICE/WHITE/GREENSERVICE/WHITE/REDSCREEN potentiometer SERVICE/GEOM 4:3/....../VERTSHIFTAdjust to centre the picture in vertical direction.../VERTAMPLITAdjust just to get the checked board hidden.../EW AMPLITAdjust just to get the checked board hidden.../PARABOLAAdjust to correct the pin cushion distortion in the .../CORNER PARAdjust to correct the pin cushion distortion in the .../TRAPEZIUMAdjust to obtain the lateral vertical lines parallel.../CENTR TXTAdjust to centre the OSD .../PARABOLAAdjust to correct the pin cushion distortion in the .../CORNER PARAdjust to correct the pin cushion distortion in the .../TRAPEZIUMAdjust to obtain the lateral vertical lines parallel.../HOR SHIFTAdjust to centre the picture in horizontal directionVICE/GEOM NATW/....../PARABOLAAdjust to correct the pin cushion distortion in the .../CORNER PARAdjust to correct the pin cushion distortion in the .../TRAPEZIUMAdjust to obtain the lateral vertical lines parallel
Pin 1 of TU250SERVICE/VIF/AGCAdjust to obtain 3,3V?0,2V
Sound: Minimum volumeCathode D850Aerial signal level: 60dBuV (1mVrms)
Channel (e.g.CH25)(AGC)
ADJUSTMENTSIGNALCONDITIONSTEST POINTADJUSTMENT POINTADJUSTMENT PROCEDUREPower supplyPhilips patternPicture: NormalisedB1VR800Adjust to obtain:Voltmeter DCAGC.UHF Band - midSound IFAny picturePin 5 of IC1350L1351Adjust to obtain 2,3V ?0,15V White balancePhilips patternPicture: NormalisedCRTScreenSERG2SERVICE/G2/BRI must be: 0 SERVICE/G2/ADJAdjust just to see the service lineFocusPicture: NormalisedFOCUS potentiometer4:3 GEOMETRYVertical slopePhilips patternPicture: NormalisedCRTScreen.../VERTSLOPEAdjust to achieve that the centre line of the Philips VisVertical centreVertical sizeWidth Pin Cushion Corner Pin CushionTrapezium TXTcentre16:9 (FULL) GEOMETRYSERVICE/GEOM 16:9/... WidthPhilips patternPicture: NormalisedCRTScreen.../EW AMPLITAdjust just to get the checked board hiddenVisual adjustment Pin Cushion Corner Pin CushionTrapezium Horizontal centreNATURALWIDE GEOMETRYSERWidthPhilips patternPicture: NormalisedCRTScreen.../EW AMPLITAdjust just to get the checked board hiddenVisual adjustment Pin Cushion Corner Pin CushionTrapeziumCommon condition to all adjustment (except AGC): The best aerial signal level should be used.
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F7YVV |
ACEC
