Sharp LC-19SH7E/RU, Service Manual, Page: 68 / 267

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