Sharp LC-42XL2S Service Manual page 111

LC-42XL2E/S/RU, LC-46XL2E/S/RU, LC-46X20E/S/RU, LC-52XL2E/S/RU, LC-52X20E/S/RU
Does not the picture of the Y/C video signal input to EXT1 go out?
Does not the picture of the Y/C video signal input to EXT2 go out?
TERMINAL UNIT:
<EXT1>
Is Y/C video signal sent to pins (20) and (15) of SCART1
(SC502)?
<EXT2>
Is Y/C video signal sent to pins (20) and (15) of SCART2
(SC503)?
<EXT1>
Is Y/C signal sent to pins (67), (69) of IC506?
<EXT2>
Is Y/C signal sent to pins (73), (75) of IC506?
Is Y/C signal output to pin (2), (4) of connector SC501 from pin
(52/Y), (50/C) of IC506?
MAIN UNIT:
Is Y/C signal sent to pins (2), (4) of connector (SC1101)?
Is Y/C signal sent to pins (Y4), (V9) of IC3301
(VIDEO_PROCESSOR)?
Refer to "The picture doesn't appear in all modes."
<External input EXT1,EXT2> No picture on the display (6)
YES
YES
YES
YES
YES
NO Check the setting of an external input device that connects of
SC502.
NO Check the setting of an external input device that connects of
SC503.
NO Check the line between SC502 and IC506.
NO Check the line between SC503 and IC506.
NO Check the line between IC506 and SC501.
NO Check the connector (SC501/SC1101)
NO Check the line between SC1101 and IC3301.
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