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Troubleshooting
From previous
page
No picture with S-VIDEO
input source
No
No picture with
Component input source
No
No picture with video
input source
Yes
Check AV source selecting stage;
Check S-video signal (Y/C) on the AV board.
S-C signal is applied to pin 71 of IC101<Video Decoder>, and S-Y sig-
nal is applied on pin 73 of IC101.
S_SW signal (S-VIDEO:L) is input to pin 9 of IC1811<I/O>.
Yes
Check AV source selecting stage;
Check component signal (Y/Cr,Pr/Cb,Pb) on the AV board.
The component signals are applied to pins 1, 2, 3 of IC101<Video
Decoder>.
The component mode is selected by the M_SCLK1 and M_SDA1 sig-
nal applied to pins 13 and 14 of IC101.
Yes
Check AV source selecting stage;
Check composite video signal (Video) on the AV board and TP103 on
the main board.
Check IC101<Video Decoder> and peripheral circuit.
H-Sync signal is output from pin 55 iof IC101. V-sync signal is output
from pin 57 of IC101.
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