Sharp LC-19SH7E/RU, Service Manual, Page: 92 / 267

LC-19SH7E/RU, LC-26SH7E/RU, LC-32SH7E/RU, LC-42SH7E/RU
92
<External input SCART1, SCART2>No picture on the display (4)
↓
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:
↓
MAIN_UNIT:
↓ YES
↓ YES
<External input SCART1>No picture on the display (5)
↓
Does not the picture of the R/G/B video signal input to SCART1 go out?
TERMINAL UNIT:
↓
MAIN_UNIT:
↓ YES
↓ YES
Is CVBS signal sent to pin (20) of SCART1 (CN500)?
NO
Check the setting of an external input device that connects of
CN500.
Refer to
“
The picture doesn't appear in all modes.
”
NO
Check the setting of an external input device that connects of
CN501.
Is CVBS signal sent to pin (20) of SCART2 (CN501)?
Is CVBS signal sent to pin (AE24) of IC U400?
Is CVBS signal sent to pin (AE26) of IC U400?
NO
NO
Check the line between IC U400 and CN500.
Check the line between IC U400 and CN501.
Is RGB signal sent to pin (15)/R, (11)/G, (7)/B, of SCART1
(CN500)?
NO
Check the setting of an external input device that connects of
CN500.
Refer to
“
The picture doesn't appear in all modes.
”
Is RGB signal sent to pin (AF24)/R, (AD24)/G, (AD23)/B of IC
U400?
NO
Check the line between IC U400 and CN500.