Daewoo SD-8100 Service Manual
Also see for SD-8100: Owner's manual
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13TROUBLESHOOTINGB. Playback picture doesn’t appearYESYESIs Y signal output at IC301pin#46?Is Y signal input at IC301pin#43?Is Video signal output at IC302pin#3?Check and Replace IC301.Check PCB Pattern.Playback picture doesn’tappear.Is Envelope output at IC301pin#79?NONOYESIs Video signal input at IC601pin#50?Is 5V obtained at IC301pin#91?Is SW Pulse input at IC301pin#70?Is 5V obtained at IC301pin#24,42,55,64?Check POWER 5V.Check IC601 pin#18.Check and Replace HEAD.Check POWER 5V.YESNONODoes X301(4.43MHz) oscillate? Check Pattern.NONONOYESNONOYESYESYESYESReplace X301.Is Video signal output at IC301pin#65? Check IC301 pin# 62.68,69,70.NOYESCheck PCB patternNOIC302 pin#9,10,11(controlDC), 16(Vcc)NOCheckPattern.Check IC604 PIN#3(C sync)YES |
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