Sharp LC-60LE630U Service Manual page 31

HDMI: No external input video [HDMI1]
Is HDMI1 selected on the input select menu screen?
Select HDMI1 on the input select menu screen for the
right input signal.
YES
Does the HOT PLUG detection function?
Does the DDC5V signal come from pin (16) of SC1501 to the ter-
minal on IC3301 side of Q1508?
Check the line between the input terminals of SC1501
and IC3301.
Check IC3301 and its peripheral circuits.
YES
Does the HPD signal come from pin (5) of Q1501 to pin (19) of
SC1501?
Check the line between the pin (5) of Q1501 and the
pin (19) of SC1501.
Check IC3301 and its peripheral circuits.
YES
Is IC3301 accessed by I2C, with HDMI connected, to read
DDC_I2C data?
Check the HDMI_DDC line and its peripheral circuits.
(Q1511 and IC1503 etc.)
YES
Are there the TMDS signal inputs at the terminals on IC3301 side
of R3369/R3370 (CLK-/+), R3374/R3381 (D0-/+), R3384/R3385
(D1-/+), R3387/R3388 (D2-/+)?
Check the line between SC1501 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)
YES
Check the panel module.
<HDMI input> No video (5)-1
NO
NO
NO
NO
NO
5 – 4
LC-60LE630U/U(A), LC-70LE735U
HDMI: No external input video [HDMI2]
Is HDMI2 selected on the input select menu screen?
Select HDMI2 on the input select menu screen for the right
input signal.
YES
Does the HOT PLUG detection function?
Does the DDC5V signal come from pin (16) of SC1503 to the terminal on
IC3301 side of Q1510?
Check the line between the input terminals of SC1503 and
IC3301.
Check IC3301 and its peripheral circuits.
YES
Does the HPD signal come from pin (5) of Q1503 to pin (19) of SC1503?
Check the line between the pin (5) of Q1503 and the pin (19)
of SC1503.
Check IC3301 and its peripheral circuits.
YES
Is IC3301 accessed by I2C, with HDMI connected, to read DDC_I2C data?
Check the HDMI_DDC line and its peripheral circuits.
(Q1513 and IC1505 etc.)
YES
Are there the TMDS signal inputs at the terminals on IC3301 side of
R3347/R3348 (CLK-/+), R3349/R3350 (D0-/+), R3351/R3360 (D1-/+),
R3364/R3368 (D2-/+)?
Check the line between SC1503 and IC3301.
YES
NO Check IC3301 and its peripheral circuits.
NO
NO
NO
NO
NO