Read Sharp LC-32D44E (serv.man5) Service Manual online
LC-32D44E/S/RU-BK/GY
4 – 14
<When EXT5 is used for external input> No picture on the display (10)
Does not the picture of the component video signal input to EXT5 go out?
Is COMPONENT video signal input into pin(3)/Y, (5)/Pb,
(7)/Pr of the input terminal J1401?
(7)/Pr of the input terminal J1401?
NO
Check the connection of J1401 and the external input device.
YES
Is COMPONENT video signal input into pin(1)/Y, (6)/Pb,
(9)/Pr of IC1401(VIDEO_BUFFER)?
(9)/Pr of IC1401(VIDEO_BUFFER)?
NO
Check the line between J1401 and IC1401.
YES
Is COMPONENT signal output into pin(180), (179),
(181) of IC3001(MAIN_MICON) from pin(20)/Y, (18)/PB,
(16)/PR of IC1401?
(181) of IC3001(MAIN_MICON) from pin(20)/Y, (18)/PB,
(16)/PR of IC1401?
NO
Check the line between IC1401 and IC3001.
YES
Refer to “The picture doesn't appear in all modes”
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