Sharp LC-19S7E-BK Service Manual page 43

Does not the picture of the composite video signal input to AV side(Composite) go out?
TERMINAL UNIT:
Is CVBS signal sent to pin (2) of AV side(CN1206) ?
MAIN_UNIT:
Is CVBS signal sent to pin 33 (CVBS1) of IC U4201?
Refer to "The picture doesn't appear in all modes."
Does not the picture of the HDMI signal input to HDMI1 go out?
MINI AV_UNIT:
Is the HOT_PLUG detection function of pin (19) of a HDMI terminal
(CN1501) normal?
Are EDID data pin (6)(SCL) of IC U1501 (EEPROM), pin (5)(SDA)
accessed, and is it read from pin (15), pin (16) of a HDMI
terminal(CN1501)?
Is TMDS signal input into pin(RX_B2+, RX_B2-)/D2±_2,(RX_B1+,
RX_B1-)/D1±_2, (RX_B0+, RX_B0-)/D0±_2, (RX_BC+, RX_BC-)/CLK
± 2 of IC U1503?
Refer to "The picture doesn't appear in all modes."
<External input AV side(Composite)>No picture on the display (5)
↓
↓
↓YES
↓YES
<External input HDMI1>No picture on the display (6)
↓
↓
YES
YES
↓YES
2008-03-14
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK
NO
Check the setting of an external input device that connects of
CN1206.
NO
Check the line between IC U4201 and CN1206.
NO
Check the line between pin 50 of IC U1503 and CN1501.
Check the connection and setup with the external HDMI devices.
NO Is access possible in the re-writing or exchange of EDID data of
IC U1501?
Check CN1501, IC U1501 and peripheral circuits.
NO Check the line between IC U1503 and CN1501.
43
↓
↓NO