Sharp LC-19LE320, Service Manual, Page: 73 / 367

2008-03-14
LC-19LE320, LC-22LE320, LC-26LE320, LC-32LE320, LC-37LE320, LC-42LE320
73
<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
↓ YES
<External input SCART1 >No picture on the display (6)
↓
Does not the picture of the Y/C signal input to SCART1 go out?
TERMINAL UNIT:
↓
MAIN_UNIT:
↓ YES
↓ YES
<External input AV3(Composite)>No picture on the display (6)
↓
Does not the picture of the composite video signal input to AV3(Composite) go out?
TERMINAL UNIT:
↓
MAIN_UNIT:
↓ YES
↓ YES
Is RGB signal sent to pin (15)/R, (11)/G, (7)/B, of SCART1
(CN151)?
NO
Check the setting of an external input device that connects of
CN151.
Refer to “ The picture doesn't appear in all modes. ”
Is RGB signal sent to pin (AU30)/R, (AP29)/G, (AR28)/B of IC
U401?
NO
Check the line between IC U401 and CN151.
Is Y/C signal sent to pin (20) and (15) of SCART1 (CN151)?
NO
Refer to “ The picture doesn't appear in all modes. ”
Is Y/C signal sent to pin (AP33)/Y, (AU30)/C of IC U401?
NO
Check the line between IC U401 and CN151.
Check the setting of an external input device that connects of
CN151.
Is CVBS signal sent to pin (2) of AV3 (CN136) ?
NO
Check the setting of an external input device that connects of
CN136.
Refer to “ The picture doesn't appear in all modes. ”
Is CVBS signal sent to pin (AU36) of IC U401?
NO
Check the line between IC U401 and CN136.