Sharp LC-60LE600U Service Manual page 35

No video at UHF/VHF 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)?
Check TU1101 and its peripheral circuits.
(TU_I2C_DAT: pin (4), TU_I2C_CLK: pin (5) of TU1101,
etc.)
YES
Is there the analog video signal input at the terminal on IC3301 side of
R3334?
Check the line between IC3301 and TU1101, and their
peripheral circuits.
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)
YES
Check the panel module.
PC: No external input video [PC IN]
Is PC IN selected on the input select menu screen?
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)
YES
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?
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)
YES
Check the panel module.
No video (3)
NO
NO
No video (4)
NO
6 – 3
No video at digital broadcast signal reception
Are there the video signal outputs (DIF-/+) at pins (10) and (11) of
tuner (TU1101)?
Check TU1101 and its peripheral circuits.
(TU_I2C_DAT: pin (4), TU_I2C_CLK: pin (5) of TU1101,
etc.)
YES
Are there the video signal inputs at the terminals on IC3301 side of
R3340 (DIFP) and R3344 (DIFN)?
Check the line between IC3301 and TU1101, and their
peripheral circuits.
YES
NO Check IC3301 and its peripheral circuits.
NO Check the line between SC502 and IC3301.
NO Check IC3301 and its peripheral circuits.
LC-60/70LE600U
NO
NO