Sharp PRO-60X5FD Service Manual page 59

PC: No external input video [INPUT-9]
Is INPUT-9 selected on the input select menu screen?
NO
Select INPUT-9 on the input select menu screen for the right input signal.
Is IC1504 (HDMI switch) accessed by I2C, with PC connected, to read the VGA_SCL/SDA data?
Check the DDC line and its peripheral circuits. (IC504 and its peripherals).
YES
Are there the video signal inputs at pins (AK15) (G), (AK13) (B) and (AM15) (R) of IC3303 (CPU)?
Are there the VSYNC/HSYNC signal inputs at pins (AM13) and (AL13) of IC3303?
YES
Are the LVDS signal input to the pin of P2601?
LVDS0_FPGA_D0P/N (39/40pin), LVDS0_FPGA_D1P/N (37/38pin),
LVDS0_FPGA_D2P/N (35/36pin), LVDS0_FPGA_D3P/N (30/31pin),
LVDS0_FPGA_D4P/N (28/29pin), LVDS0_FPGA_CLKP/N_74MHz (32/33pin),
LVDS1_FPGA_D0P/N (25/26pin), LVDS1_FPGA_D1P/N (23/24pin),
LVDS1_FPGA_D2P/N (21/22pin), LVDS1_FPGA_D3P/N (16/17pin),
LVDS1_FPGA_D4P/N (14/15pin), LVDS1_FPGA_CLKP/N_74MHz (18/19pin).
YES
Check the panel module and harness.
No video (4)
NO
Check the line between SC501 and IC3303.
NO
6 – 10
PRO-60/70X5FD
Check IC3303 and its peripheral circuits.
(IC3501/IC3502, etc.)