Sharp LC-26SH7E/RU Service Manual page 66

LC-19SH7E/RU, LC-26SH7E/RU, LC-32SH7E/RU, LC-42SH7E/RU
Does not the picture of the Y/C signal input to SCART1 go out?
Does not the picture of the Y/C signal input to SCART2 go out?
TERMINAL UNIT:
Is Y/C signal sent to pin (20) and (15) of SCART1 (CN500)?
Is Y/C signal sent to pin (20) and (15) of SCART2 (CN501)?
MAIN_UNIT:
Is Y/C signal sent to pin (AE24)/Y, (AF25)/C of IC U400?
Is Y/C signal sent to pin (AE26)/Y, (AE25)/C of IC U400?
Refer to "The picture doesn't appear in all modes."
Does not the picture of the composite video signal input to AV3(Composite) go out?
TERMINAL UNIT:
Is CVBS signal sent to pin (2) of AV3 (CN654) ?
MAIN_UNIT:
Is CVBS signal sent to pin (AC24) of IC U400?
Refer to "The picture doesn't appear in all modes."
Does not the picture of the Y/C video signal input to AV3(Y/C) go out?
TERMINAL UNIT:
Is Y/C signal sent to pin (3)/Y, (4)/C of AV3 (CN651) ?
MAIN_UNIT:
Is Y/C signal sent to pin (AD26)/Y, (AD25)/C of IC U400?
Refer to "The picture doesn't appear in all modes."
<External input SCART1, SCART2>No picture on the display (6)
↓
↓
↓YES
↓YES
<External input AV3(Composite)>No picture on the display (7)
↓
↓
↓YES
↓YES
<External input AV3(Y/C)>No picture on the display (8)
↓
↓
↓YES
↓YES
NO
Check the setting of an external input device that connects of
CN500.
NO
Check the setting of an external input device that connects of
CN501.
NO
Check the line between IC U400 and CN500.
NO
Check the line between IC U400 and CN501.
NO
Check the setting of an external input device that connects of
CN654.
NO
Check the line between IC U400 and CN650.
NO
Check the setting of an external input device that connects of
CN651.
NO
Check the line between IC U400 and CN651.
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