Sharp LC-19LS410UT, Service Manual

Page: 38 / 115

LC-19LS410UT, LC-22LS510UT
38
<External input Input2(Component)>No picture on the display (7)
↓
Does not the picture of the component video signal input to Component go out?
TERMINAL_UNIT:
↓
MAIN_UNIT:
↓ YES
↓ YES
<External input USB>No picture on the display (8)
↓
Does not the picture of the USB IN video signal input to USB(CN111) go out?
TERMINAL_UNIT:
↓
MAIN_UNIT:
↓ YES
↓ YES
TERMINAL_UNIT:
↓
MAIN_UNIT:
↓ YES
↓ YES
Is Component Y/Pb/Pr signal sent to pin (2)/Y, (4)/Pb, (6)/Pr of
AV1(CN103) ?
NO
Check the setting of an external input device that connects of
CN103.
Refer to
“
The picture doesn't appear in all modes.
”
Is Component Y/Pb/Pr signal sent to pin (54)/Y, (56)/Pb, (57)/Pr of
IC U401? NO
Check the line between IC U401 and CN103.
Is Video format correct
NO
Check the setting of an external input device that connects of
CN107.
Refer to
“
The picture doesn't appear in all modes.
”
Is R/G/B/H/V signal sent to pin (52)/R, (50)/G, (48)/B, (47)/H, (46)/V
of IC U401?
NO
Check the line between IC U401 and CN107.
Is R/G/B/H/V signal sent to pin (1)/R, (2)/G, (3)/B, (14)/H, (13)/V of
VGA (CN107)?
NO
Check the setting of an external input device that connects of
CN107.
Refer to
“
The picture doesn't appear in all modes.
”
Is R/G/B/H/V signal sent to pin (52)/R, (50)/G, (48)/B, (47)/H, (46)/V
of IC U401?
NO
Check the line between IC U401 and CN107.