User`s manual

4-2-6 Solution processes VIDEO
NG
Check the state of power
switch ,and DC power.
1.Test input signal of U14
under VIDEO and
S-VIDEO mode
2. Test input signal of U1
at C18/C19/C20 under
YCbCr mode
Check circuit of U6
(PW1231) ok or not?
Check U1
OK
OK
Is there any short or disconnection,
and signal is wrong.
（The signal of standard color bar
will be ver
y
clea
r
）
Is there any short or disconnection, CLK
and SYNC signal to U1circuit?
NG
OK
OK
Check circuit of U20
（SCALAR）and LVDS
NG
Is there any short or disconnection, CLK
and SYNC signal to U6 circuit?
OK
U6
X5
No display under Video, S-video,
YCbCr and YPbPr mode
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