Sharp LC-40D68UT - Page 52

LC-40D68UT
6 – 3
No video (3)
PC: No external input video [INPUT-4]
Is INPUT-4 selected on the input select menu screen? NO Select INPUT-4 on the input select menu screen for the right
input signal.
YES
Is IC602 (EEPROM) accessed by I2C, with PC connected, to
read the DDC_I2C DSUB_SCL/DSUB_SDA data?
Check the DDC line and its peripheral circuits. (IC602 and its
peripherals).
Are there the video signal inputs at pins (B12) (G), (A9) (B) and
(A6) (R) of IC8001 (CPU)?
Are there the VSYNC/HSYNC signal inputs at pins (B16) and
(B17) of IC8001?
NO Check the line between SC601 and IC8001 (IC601, etc.).
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.