Sharp LC-19S7E-BK Service Manual page 35

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?
YES
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)?
YES
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?
Is TMDS signal input into pin(RX_BC2N, RX_BC2P)/D2±
_2,(RX_B1N, RX_B1P)/D1±_2, (RX_B0N, RX_B0P)/D0±_2,
(RX_BCKN, RX_BCKP)/CLK±_2 of IC U4201?
↓YES
Refer to "The picture doesn't appear in all modes."
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 (CN1401)?
MAIN_UNIT:
Is R/G/B/H/V signal sent to pin (11)/RIN1, (10)/GIN1, (8)/BIN1,
(3)/HSYNC1, (4)/VSYNC1 of IC U4201?
Refer to "The picture doesn't appear in all modes."
<External input HDMI1>No picture on the display (6)
↓
↓
↓YES
<External input VGA>No picture on the display (9)
↓
↓
↓YES
↓YES
2008-03-14
<External input AV1(Component)>No picture on the display (10)
LC-19S7E-BK LC-26S7E-BK LC-32S7E-BK
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.
NO Check the line between IC U1503 and IC U4201.
NO
Check the setting of an external input device that connects of
CN1401.
NO
Check the line between IC U4201 and CN1401.
35
↓
↓NO