Sharp LC-32M400M-BK Service Manual page 29

With <Video> signal input
No external input video onscreen <INPUT 5>
Is INPUT 5 selected on the input select menu screen?
Is there the video signal input at pin (33) of IC3301?
Are there signal outputs of IC3301?
Check LVDS cable, LCD controller (incl. panel) and their periph-
eral circuits.
With <S-video> signal input
No external input video onscreen <INPUT 4>
Is INPUT 4 selected on the input select menu screen?
Are there the following signal inputs at the input terminals of
IC3301?
<S-video signal>
Are there the Y and C signal inputs at pins (30) and (29), respec-
tively?
Are there signal outputs of IC3301?
Check LCD controller (incl. panel) and their peripheral circuits.
No video onscreen (3)
YES
YES
YES
No video onscreen (4)
YES
YES
YES
NO Select INPUT 5 on the input select menu screen to pick up the
right input signal.
NO Check the line between pin (6) of SC5201 and pin (33) of IC3301.
NO Check IC3301 and its peripheral circuits.
NO Select INPUT 4 on the input select menu screen to pick up the
right input signal.
NO <S-video signal>
Check the line between pins (1), (2) of SC5201 and pins (30)/(29)
of IC3301.
NO Check IC3301 and its peripheral circuits.
6 – 3
LC-32M400M-BK/WH/RD