Sharp LC-26SB25E Service Manual page 46

LC-26SB25E/S/RU, LC-32SB25E/S/RU, LC-42SB55E/S/RU
Does not the picture of the CVBS signal input to SCART1 go out?
Does not the picture of the CVBS signal input to SCART2 go out?
TERMINAL UNIT:
Is CVBS signal sent to pin (20) of SCART1 (CN500)?
Is CVBS signal sent to pin (20) of SCART2 (CN501)?
MAIN_UNIT:
Is CVBS signal sent to pin (AF25) of IC U400?
Is CVBS signal sent to pin (AF26) of IC U400?
Refer to "The picture doesn't appear in all modes."
Does not the picture of the R/G/B video signal input to SCART1 go out?
TERMINAL UNIT:
Is RGB signal sent to pin (15)/R, (11)/G, (7)/B, of SCART1
(CN500)?
MAIN_UNIT:
Is RGB signal sent to pin (AE23)/R, (AE22)/G, (AD21)/B of IC
U400?
Refer to "The picture doesn't appear in all modes."
<External input SCART1, SCART2>No picture on the display (4)
↓
↓
↓YES
↓YES
<External input SCART1>No picture on the display (5)
↓
↓
↓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
CN500.
NO
Check the line between IC U400 and CN500.
46