Sharp Aquos LC-32D44E, Service Manual

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LC32D44E/S/RU-BK/GY (1st Eddition)
4 – 11
[External input EXT1,EXT2] No picture on the display (4)
Does not the picture of the CVBS signal input to EXT1 go out?
Does not the picture of the CVBS signal input to EXT2 go out?
<EXT1>
Is CVBS signal sent to pin (20) of SCART1 (SC1102)?
NO Check the setting of an external input device that connects of SC1102.
<EXT2> NO Check the setting of an external input device that connects of SC1101.
Is CVBS signal sent to pin (20) of SCART2 (SC1101)?
YES
<EXT1>
Is CVBS signal sent to pin (6) of IC1502(SW.)?
NO Check the line between SC1102 and IC1502
<EXT2>
Is CVBS signal sent to pin (4) of IC1502(SW.)?
NO Check the line between SC1101 and IC1502.
YES
Is CVBS signal output to pin(190) of
IC3001(MAIN_MICON) from pin(2) of IC1502? NO Check the line between IC1502 and IC3001.
(SCART12_LINE, etc.)
YES
Refer to “The picture doesn't appear in all modes.”
[External input EXT1,EXT2] No picture on the display (5)
Does not the picture of the R/G/B video signal input to EXT1 go out?
Does not the picture of the R/G/B video signal input to EXT2 go out?
<EXT1>
Is RGB1 signal sent to pins (15)/R1, (11)/G1 and (7)/B1
of SCART1(SC1102)? NO
Check the setting of an external input device that connects of SC1102.
<EXT2>
Is RGB2 signal sent to pins (15)/R2, (11)/G2 and (7)/B2
of SCART2(SC1101)? NO
Check the setting of an external input device that connects of SC1101.
YES
<EXT1>
Is RGB1 signal sent to pins (187)/R1, (175)/G1 and
(182)/B1 of IC3001(MAIN_MICON)? NO
Check the line between SC1102 and IC3001.
<EXT2>
Is RGB2 signal sent to pins (178)/R2, (177)/G2 and
(176)/B2 of IC3001(MAIN_MICON)? NO
Check the line between SC1101 and IC3001.
YES
Refer to “The picture doesn’t appear in all modes.”