Toshiba SD-42HKSB Service Manual

Contents

- 2-45 -C.FOCUS ON?Checkthe focus error moving thelens up and down.(IC2A1 Pin39)Does theTTL level change at IC201Pin121 and 152 movingthe lens?Does the disc turn?Is OK the track jump. Does the signalpulse appear at IC201Pins150, 151?Does the screen appear?OPEN/CLOSEReplace μ-COM or IC201.Replace IC201.Check IC2A1 Pins47,50,51,52in DVD ModeFig.3. FOCUS ERROR waveformIC201 no output : Pick-up is defective.Check IC201 and IC2M1 when PMD03 Pin6 is abnormalCheck IC2M1 Pin21, PMD03Pin6 turn when the IC2M1Pin21 is less than 2.2V.Video Part is defective.Check "5.MPEG Circuit."Check "7.OSD/Video Circuit."Replace μ-COM part.IC2A1 is defective.DISC INENDNONONO NONONONOYES YESYESYESYES YESYES