Sharp LC-19S7E-BK Service Manual page 34

LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK
Does not the picture of the CVBS signal input to SCART1 go out?
TERMINAL UNIT:
Is CVBS signal sent to pin (20) of SCART1 (CN1901)?
MAIN_UNIT:
Is CVBS signal sent to pin (31) of IC U4201?
Refer to "The picture doesn't appear in all modes."
Does not the picture of the R/G/B video signal input to SCART1 go out?
TERMINAL UNIT:
Is RGB signal sent to pin (15)/SCR, (11)/SCG, (7)/SCB, of SCART1
(CN1901)?
MAIN_UNIT:
Is RGB signal sent to pin (17)/RIN0, (15)/GIN0, (13)/BIN0 of IC
U4201?
Refer to "The picture doesn't appear in all modes."
Does not the picture of the composite video signal input to SIDE AV(Composite) go out?
TERMINAL UNIT:
Is CVBS signal sent to pin (2) of SIDE AV (CN1207) ?
MAIN_UNIT:
Is CVBS signal sent to pin (33) of IC U4201?
Refer to "The picture doesn't appear in all modes."
<External input SCART1>No picture on the display (3)
↓
↓
↓YES
↓YES
<External input SCART1>No picture on the display (4)
↓
↓
↓YES
↓YES
<External input AV3(Composite)>No picture on the display (5)
↓
↓
↓YES
↓YES
NO
Check the setting of an external input device that connects of
CN1901.
NO
Check the line between IC U4201 and CN1901.
NO
Check the setting of an external input device that connects of
CN1901.
NO
Check the line between IC U4201 and CN1901.
NO
Check the setting of an external input device that connects of
CN1207.
NO
Check the line between IC U4201 and CN1207.
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