LC-40D68UT
6 – 5
<HDMI input> No video (4)-2
HDMI: No external input video [INPUT-7]
Is INPUT-7 selected on the input select menu screen?
NO
Select INPUT-7 on the input select menu screen for the right
input signal.
YES
Does the HOT PLUG detection function?
NO
Check the line between the input terminals of SC1603 and
IC8001 and their peripheral circuits.
Does the DDC5V signal come from pin (18) of SC1603 to pin
(C17) of IC8001 (CPU)?
Does the HPD signal come from pin (W19) of IC8001 to pin (19)
of SC1603?
YES
Do the DDC_I2C signals come from pins (15/16) (DDC_SCL/
DDC_SDA) of SC1602 to pins (C18/B19) of IC8001 (CPU)?
NO
Check the line between the input terminals of SC1603 and
IC8001 and their peripheral circuits.
Are there the TMDS signal inputs at pins (D20/D19) (CLK-/+),
(C20/C19) (D0-/+), (B22/B21) (D1-/+), (A22/S21) (D2-/+), all of
IC8001?
Check IC1612 (EEPROM of EDID) and its peripheral circuits.
(DDC_SCL: pin5, DDC_SDA: pin6, all of IC1611)
YES
Are the LVDS signal outputs at the LVDS 1st channel and 2nd
channel of IC8001?
LV0OUT0P/M (N19/N20), LV0OUT1P/M (N21/N22),
LV0OUT2P/M (P19/P20), LV0OUT3P/M (R19/R20),
LV0OUT4P/M (R21/R22), LV0CK0P/M (P21/P22),
LV1OUT0P/M (J21/J22), LV1OUT1P/M (K19/K20),
LV1OUT2P/M (K21/K22), LV1OUT3P/M (L21/L22),
LV1OUT4P/M (M21/M22), LV1CK0P/M (L19/L20)
NO
Check IC8001 and its peripheral circuits. (IC8251, etc.)
YES
Check the panel module.
