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B. When ¡° No Signal¡±in Y/C signal (S-Video)
1) First check if other inputs are working
=>If other inputs are not working, replace MAIN or SUB PCB
2) Checking waveforms with Color Bar Pattern (Using the oscilloscope)
- Main TP(Y signal): 7th pin of PW202(Top, Sub), Negative polarity of CE214(Top,
-Main TP(C signal): 9th pin of PW202(Top, Sub), Positive polarity of CE218(Top,
=> If all TP signal does not appear, replace SUB PCB
CVBS signal (Positive polarity of CE220)
Sub) near IC201, RC10(Bottom, Sub) near IC201, CCV15(Top,
Main) near ICV10
Sub) near IC201, RC257(Bottom, Sub) near IC201, CCV14(Top,
Main) near ICV10
Y signal (CCV15)
C signal (CCV14)
-31-
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