Does Not The Picture Of The Hdmi Signal Input To Ext6/7 Go Out? - Sharp LC-37D44E Service Manual

LC-37D44E/S/RU-BK/GY

Does not the picture of the HDMI signal input to EXT6/7 go out?

EXT6
Is the HDMI detection function output from pin (19) of
the HDMI terminal (SC1901) normal?
EXT7
Is the HDMI detection function output from pin (19) of
the HDMI terminal (SC1921) normal?
EXT6
Is EDID data pin (6)/SCL, pin(5)/SDA of
IC1902(EEPROM) accessed, and is it read from pin
(15),(16) of a HDMI terminal(SC1901)?
EXT7
Is EDID data pin (6)/SCL, pin(5)/SDA of
IC1922(EEPROM) accessed, and is it read from pin
(15),(16) of a HDMI terminal(SC1921)?
EXT6
Is TMDS signal input into pin(59,58)/TMDS2_CLKP/N,
(63,62)/TMDS2_D0P/N, (67,66)/TMDS2_D1P/N,
(71,70)/TMDS2_D2P/N of IC1951 from SC1901?
EXT7
Is TMDS signal input into pin(40,39)/TMDS1_CLKP/N,
(44,43)/TMDS1_D0P/N, (48,47)/TMDS1_D1P/N,
(52,51)/TMDS1_D2P/N of IC1951 from SC1921?
Is each signal output from DINR[0:7], DING[0:7],
DINB[0:7], pin(2,3)/HDMI_H/V, (1)/DINEN, (121)/
DINCK, of IC1951?
Is each signal of DINR[0:7], DING[0:7], DINB[0:7], pin(171,47)/HDMI_H/V, (48)/DINEN, (49)/DINCK of IC3001(MAIN_MICON) input?
Refer to "The picture doesn't appear in all modes."
<When EXT6/7 is used for external input> No picture on the display (11)
NO
YES
NO
NO
YES
NO
NO
YES
NO
YES
YES
EXT6
Check between SC1901and IC3001(MAIN_MICON) of pin(205).
(Q1905, etc.)
EXT7
Check between SC1921 and IC3001(MAIN_MICON) of pin(203).
(Q1925, etc.)
Check the connection and setup with the external HDMI devices.
Is access possible in the re-writing or exchange of EDID data of
IC1902?
Check the circumference circuit of SC1901, IC1902 and
IC1951(HDMI_RECEIVER).
Is access possible in the re-writing or exchange of EDID data of
IC1922?
Check the circumference circuit of SC1921, IC1922 and
IC1951(HDMI_RECEIVER).
Check the line between SC1901 and IC1951.
Check the line between SC1921 and IC1951.
Is the control signal of IC1951 and IC3001 (MAIN_MICON) normal?
(HDMI_RST, IC1941, etc.)
Check the line between IC1951 and IC3001.
(IC1941, etc.)
4 – 13
NO
NO
NO