LC-60LE630U/U(A),6300U/U(A)/U(B),LC-70LE735U
5 – 3
No video (3)
No video at UHF/VHF broadcast signal reception
No video at digital broadcast signal reception
Is the specified TV signal selected on the input select menu screen?
Is there the analog video signal output (CVBS) at pin (9) of tuner
(TU1101)?
Are there the video signal outputs (DIF-/+) at pins (10) and (11) of
tuner (TU1101)?
YES
NO
YES
NO
Check TU1101 and its peripheral circuits.
(TU_I2C_DAT: pin (4), TU_I2C_CLK: pin (5) of TU1101,
etc.)
Check TU1101 and its peripheral circuits.
(TU_I2C_DAT: pin (4), TU_I2C_CLK: pin (5) of TU1101,
etc.)
Is there the analog video signal input at the terminal on IC3301 side of
R3334?
Are there the video signal inputs at the terminals on IC3301 side of
R3340 (DIFP) and R3344 (DIFN)?
YES
NO
YES
NO
Check the line between IC3301 and TU1101, and their
peripheral circuits.
Check the line between IC3301 and TU1101, and their
peripheral circuits.
Are the LVDS signal outputs at the LVDS of SC2601?
LVDS_O_D0P/N (25/26pin), LVDS_O_D1P/N (23/24pin), LVDS_O_D2P/N (21/22pin),
LVDS_O_CLKP/N (18/19pin), LVDS_O_D3P/N (16/17pin)
NO
Check IC3301 and its peripheral circuits.
YES
Check the panel module.
No video (4)
PC: No external input video [PC IN]
Is PC IN selected on the input select menu screen?
YES
NO
Select PC IN on the input select menu screen for the
right input signal.
Is IC508 (EEPROM) accessed by I2C, with con-
nected, to read the DDC_I2C data?
Check the DDC line and its peripheral circuits.
(IC508 and its peripherals)
Are there the video signal inputs at the terminals on IC3301 side of
C3302 (R), C3303 (G), and C3304 (B)?
Are there the VSYNC/HSYNC signal inputs at the terminals on
IC3301 side of R621 and R620?
NO
Check the line between SC502 and IC3301.
YES
Are the LVDS signal outputs at the LVDS of SC2601?
LVDS_O_D0P/N (25/26pin), LVDS_O_D1P/N (23/24pin),
LVDS_O_D2P/N (21/22pin), LVDS_O_CLKP/N (18/19pin),
LVDS_O_D3P/N (16/17pin)
NO
Check IC3301 and its peripheral circuits.
YES
Check the panel module.
