LG LST-4200A Service Manual - Page 40
MHz NTSC Encoder Pixel Clock
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(D) YES Is NTSC mute signal at low? NO NG Check HD-II NTSC encoder part. Check if Q308(2),Q309(2) and Q310(2) are in the low. Otherwise, check IC208(7). Check NTSC encoder pixel clock: IC204(7) Check NTSC analog output buffer part. OK END Fig.13 27MHz NTSC Encoder Pixel Clock 3-31
3-31
Is NTSC mute signal at low?
Check if Q308(2),Q309(2) and Q310(2)
are in the low. Otherwise, check IC208(7).
Check NTSC encoder pixel clock:
IC204(7) <FIG.13>
Check HD-II NTSC encoder part.
Check NTSC analog output buffer
part.
END
(D)
NO
YES
NG
OK
Fig.13
27MHz NTSC Encoder Pixel Clock