Sharp LC-26SB25E, Service Manual

Page: 47 / 172

2008-03-14
LC-26SB25E/S/RU, LC-32SB25E/S/RU, LC-42SB55E/S/RU
47
<External input SCART1, SCART2>No picture on the display (6)
↓
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:
↓
MAIN_UNIT:
↓
YES
↓
YES
Is Y/C signal sent to pin (20) and (15) of SCART1 (CN500)?
NO
Refer to “ The picture doesn't appear in all modes. ”
NO Is Y/C signal sent to pin (20) and (15) of SCART2 (CN501)?
Is Y/C signal sent to pin (AF25)/Y, (AE24)/C of IC U400?
Is Y/C signal sent to pin (AF26)/Y, (AE25)/C of IC U400?
NO
NO
Check the line between IC U400 and CN500.
Check the line between IC U400 and CN501.
Check the setting of an external input device that connects of
CN500.
Check the setting of an external input device that connects of
CN501.