Sharp LC-26SH7E/RU Service Manual page 68

LC-19SH7E/RU, LC-26SH7E/RU, LC-32SH7E/RU, LC-42SH7E/RU
Does not the picture of the PC IN(ANALOG) video signal input to VGA(15pin-D-SUB terminal) go out?
TERMINAL_UNIT:
Is R/G/B/H/V signal sent to pin (1)/R, (2)/G, (3)/B, (14)/H, (13)/V of
VGA (CN554)?
MAIN_UNIT:
Is R/G/B/H/V signal sent to pin (AE20)/R, (AE19)/G, (AD19)/B,
(AC18)/H, (AB18)/V of IC U400?
Refer to "The picture doesn't appear in all modes."
Does not the picture of the component video signal input to Component go out?
TERMINAL_UNIT:
Is Component Y/Pb/Pr signal sent to pin (2)/Y, (4)/Pb, (6)/Pr of
AV1(CN552) ?
MAIN_UNIT:
Is Component Y/Pb/Pr signal sent to pin (AE21)/Y, (AD22)/Pb,
(AF22)/Pr of IC U400?
Refer to "The picture doesn't appear in all modes."
<External input VGA>No picture on the display (11)
↓
↓
↓YES
↓YES
<External input AV1(Component)>No picture on the display (12)
↓
↓
↓YES
↓YES
NO
Check the setting of an external input device that connects of
CN554.
NO
Check the line between IC U400 and CN554.
NO
Check the setting of an external input device that connects of
CN552.
NO
Check the line between IC U400 and CN552.
68