Sharp LC-32X20E Service Manual page 67

Does not the picture of the HDMI signal input to EXT5/6 go out?
MAIN UNIT:
EXT5
Is the HDMI detection function output from pin (19) of the HDMI
terminal (SC1501) normal?
EXT6
Is the HDMI detection function output from pin (19) of the HDMI
terminal (SC1502) normal?
EXT5
Is EDID data pin (6)/SCL, pin (5)/SDA of IC1501 (EEPROM)
accessed, and is it read from pin (15), (16) of a HDMI terminal
(SC1501) pin(15), (16)?
EXT6
Is EDID data pin (6)/SCL, pin (5)/SDA of IC1502 (EEPROM)
accessed, and is it read from pin (15), (16) of a HDMI terminal
(SC1501) pin (15), (16)?
EXT5
Is TMDS signal input into pin (19, 18)/TMDS2_CLKP/N±,
(22, 21)/TMDS2_D0P/N, (25, 24)/TMDS2_D1P/N, (28, 27)/
TMDS2_D2P/N of IC1507 from SC1501?
EXT6
Is TMDS signal input into pin (39, 38)/TMDS1_CLKP/N±, 42, 41)/
TMDS1_D0P/N, (45, 44)/TMDS1_D1P/N, (48, 47)/TMDS1_D2P/
N of IC1507 from SC1502?
Is each signal output from pin (10, 11)/TMDS_CLKP/N, (7, 8)/
TMDS_D0P/N, (4, 5)/TMDS_D1P/N, (1, 2)/TMDS_D2P/N, (77,
78)/SDA_SINK/SCL_SINK, (79)/DDC5VOR_A of IC1507?
Is each signal of IC3301 (VIDEO_PROCESSOR) pin (L1, L2)/TMDS_CLKP/N, (M1, M2)/TMDS_D0P/N, (N1, N2)/TMDS_D1P/N, (P1, P2)/
TMDS_D2P/N, (T11, U11)/SDA_SINK/SCL_SINK, (T10)/DDC5VOR_A input?
Refer to "The picture doesn't appear in all modes."
<When EXT5/6 is used for external input> No picture on the display (10)
YES
YES
YES
YES
YES
LC-32X20E/S/RU, LC-37X20E/S/RU
NO EXT5
Check between SC1501and IC1507(HDMI_SW)of pin(16).
(IC1506, etc.)
NO EXT6
Check between SC1502 and IC1507(HDMI_SW) of pin(36).
(IC1506, etc.)
Check the connection and setup with the external HDMI devices.
NO Is access possible in the re-writing or exchange of EDID data of
IC1501?
Check the circumference circuit of SC1501, IC1501and IC1507.
NO Is access possible in the re-writing or exchange of EDID data of
IC1502?
Check the circumference circuit of SC1501, IC1501and IC1507.
NO Check the line between SC1501 and IC1507.
NO Check the line between SC1502 and IC1507.
NO Is the control signal of IC1507 and IC9101 (CPLD) normal?
(HDMI_SW_INT, HDMI_RST, etc.)
Check the line between IC1507 and IC3301.
4 – 17
YES
NO
NO
NO