Magnavox 19MDTR20 Service Manual

Also see for 19MDTR17: Features

Contents

1-7-7 T0102MCEA10. Sub-Brightness AdjustmentPurpose: To get proper brightness.Symptom of Misadjustment: If Sub-Brightness isincorrect, proper brightness cannot be obtained byadjusting the Brightness Control.Note: SMPTE Setup level --- 7.5 IRE1. Enter the Service mode. (See page 1-7-1.)Then input SMPTE signal from RF input.2. Press [PICTURE] button. (Press [PICTURE]button then display will change BRT, CNT, COL,TNT, V-TNT, and SHP). Select BRT and press[CH. o / p] buttons so that the bar is just visible(See above figure).11. Focus AdjustmentPurpose: Set the optimum Focus.Symptom of Misadjustment: If Focus Adjustment isincorrect, blurred images are shown on the display.Note: Focus VR --- FBT (Sub CBA),FBT = Fly Back Transformer1. Operate the unit more than 30 minutes.2. Face the unit to the East and degauss the CRTusing a degaussing coil.3. Input the monoscope pattern.4. Adjust the Focus Control on the FBT to obtain aclear picture.12. H. Position AdjustmentPurpose: To obtain correct horizontal position ofscreen image.Symptom of Misadjustment: H. position may not beproperly displayed.1. Enter the Service mode. (See page 1-7-1.)Press [8] button on the remote control unit andselect H-P mode.2. Input monoscope pattern.3. Press [CH. o / p] buttons on the remote controlunit so that the left and right side of themonoscope pattern are equal to each other.Test Point Adj. Point Mode Input--- [CH. o / p]buttons --- SMPTE7.5IRETape M. EQ. Spec.--- PatternGenerator See belowFigureFig. 7White BlackThis barjustvisibleTest Point Adj. Point Mode Input--- Focus Control --- MonoscopeTape M. EQ. Spec.--- Pattern Generator See belowTest Point Adj. Point Mode Input--- [CH. o / p]buttons --- MonoscopeTape M. EQ. Spec.--- Pattern Generator ---