Sharp Aquos LC-32D44E, Service Manual

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LC32D44E/S/RU-BK/GY (1st Eddition)
4 – 15
<When EXT6/7 is used for external input> No picture on the display (11)
Does not the picture of the HDMI signal input to EXT6/7 go out?
EXT6 EXT6
Is the HDMI detection function output from pin (19) of
the HDMI terminal (SC1901) normal? Check between SC1901and IC3001(MAIN_MICON) of pin(205).
(Q1905, etc.)
NO
EXT7 EXT7
Is the HDMI detection function output from pin (19) of
the HDMI terminal (SC1921) normal? Check between SC1921 and IC3001(MAIN_MICON) of pin(203).
(Q1925, etc.)
YES
Check the connection and setup with the external HDMI devices.
EXT6 NO
Is access possible in the re-writing or exchange of EDID data of
IC1902?
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)?
NO
Check the circumference circuit of SC1901, IC1902 and
IC1951(HDMI_RECEIVER).
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)?
NO
Is access possible in the re-writing or exchange of EDID data of
IC1922?
NO
Check the circumference circuit of SC1921, IC1922 and
IC1951(HDMI_RECEIVER).
YES
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?
NO
Check the line between SC1901 and IC1951.
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?
NO
Check the line between SC1921 and IC1951.
YES
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? NO
Is the control signal of IC1951 and IC3001 (MAIN_MICON) normal?
(HDMI_RST, IC1941, etc.)
YES
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?
YES NO
Refer to “The picture doesn't appear in all modes.”
Check the line between IC1951 and IC3001.
(IC1941, etc.)