Sharp LC-65D64U Service Manual page 43

PC: No external input video [INPUT-7]
Is INPUT-7 selected on the input select menu screen?
Select INPUT-7 on the input select menu screen for the right input
signal.
Is IC2202(EEPROM) accessed by I2C, with PC connected, to read
the DDC_I2C SCL/SDA data?
Check the DDC line and its peripheral circuits. (IC2202 and its
peripherals).
YES
Is there the video signal input at pin(8) of IC3201(SYNC)?
Are there the VSYNC/HSYNC signal inputs at pins(23) and (24) of IC3201?
Are there the video signal inputs at pins(6)(G), (2)(B) and (14)(R) of IC3301(ADC)?
Are there the VSYNC/HSYNC signal inputs at pins(71) and (70) of IC3301(ADC)?
Are there the HD_DVI[29:0], HD_DVI_CLK_P, HD_DVI_VSYNC, HD_DVI_HSYNC,
HD_DVI_DE signal outputs from IC3301?
Are there the HD_DVI[29:0], HD_DVI_CLK_P, HD_DVI_VSYNC, HD_DVI_HSYNC,
HD_DVI_DE signal inputs to IC8001(CPU)?
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of IC8001?
LVDS_TX_0_DATA0_P/N(C7/B7), LVDS_TX_0_DATA1_P/N(E7/D7),
LVDS_TX_0_DATA2_P/N(C6/B6), LVDS_TX_0_DATA3_P/N(C5/B5),
LVDS_TX_0_DATA4_P/N(E5/D5), LVDS_TX_0_CLK_P/N(E6/D6),
LVDS_TX_1_DATA0_P/N(B4/A4), LVDS_TX_1_DATA1_P/N(E4/D4),
LVDS_TX_1_DATA2_P/N(B3/A3), LVDS_TX_1_DATA3_P/N(B1/B2),
LVDS_TX_1_DATA4_P/N(F5/F6), LVDS_TX_1_CLK_P/N(C2/C3),
Check the panel module.
No video (6)
NO
YES
YES
YES
YES
YES
6 – 9
NO Check the line between SC2201 and IC3201
(Q2211, IC2201, etc.).
NO Check the line between SC2201 and IC3301
(Q2211, IC2201, etc.).
NO Check IC3301 and its peripheral circuits.
NO Check the line between IC3301 and IC8001.
Check IC8001 and its peripheral circuits. (IC8151
thru IC8154, etc.)
NO
LC-65D64U