LC-32X20E/S/RU, LC-37X20E/S/RU
4 – 17
<When EXT5/6 is used for external input> No picture on the display (10)
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?
NO EXT5
Check between SC1501and IC1507(HDMI_SW)of pin(16).
(IC1506, etc.)
EXT6
Is the HDMI detection function output from pin (19) of the HDMI
terminal (SC1502) normal?
NO EXT6
Check between SC1502 and IC1507(HDMI_SW) of pin(36).
(IC1506, etc.)
YES
YES
Check the connection and setup with the external HDMI devices.
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)?
NO Is access possible in the re-writing or exchange of EDID data of
IC1501?
NO
Check the circumference circuit of SC1501, IC1501and IC1507.
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)?
NO Is access possible in the re-writing or exchange of EDID data of
IC1502?
NO
Check the circumference circuit of SC1501, IC1501and IC1507.
YES
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?
NO Check the line between SC1501 and IC1507.
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?
NO Check the line between SC1502 and IC1507.
YES
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?
NO Is the control signal of IC1507 and IC9101 (CPLD) normal?
(HDMI_SW_INT, HDMI_RST, etc.)
YES
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?
YES NO
Refer to “The picture doesn't appear in all modes.” Check the line between IC1507 and IC3301.
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