Sharp LC-60LE920UN Service Manual page 51

LC-52LE920UN/LC-60LE920UN
I
<HDMI input> No video 15)-1
I
I
HDMI: No external input video [INPUT-4]
I
Is INPUT-4 selected on the input select menu screen?
I HDMI: No external input video [INPUT-5] I
I Is INPUT-5 selected on the input select menu screen? I
_' NO
Select INPUT-4 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 (18) of SC1503 to pin (46) of
IC1504 (HDMI_SW)?
_' NO
Select INPUT-5 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 (18) of SC1502 to pin (42) of
IC1504 (HDMI_SW)?
_ NO
Check the line between the input terminals of SC1502
and IC1504.
Check IC1504 and its peripheral circuits
(SDA0_400K: pin53 of IC1504/SCL0_400K: pin54 of
YES IC1504, etc.).
Does the HPD signal come from pin (41) of IC1504 to pin (19) of
SC1502?
_ NO
Check the line between the pin (41) of IC1504 and the
pin (19) of SC1502.
Check IC1504 and its peripheral circuits
(SDA0_400K: pin53 of IC1504/SCL0_400K: pin54 of
YES IC1504, etc.).
Are there the TMDS signal inputs at pins (11/12) (CLK-/+), (13/14)
(D0-/+), (15/16) (D1-/+), (17/18) (D2-/+), all of IC1504?
_ NO
Is IC1504(pin39/pin40) accessed by 12C, with HDMI
connected, to read the DDC_I2C SDA/SCL data?
_ NO
Check the DDC line and its peripheral circuits.
(IC1504 and its peripherals).
NO
Check the line between the input terminals of SC1503
and IC1504.
Check IC1504 and its peripheral circuits
(SDA0_400K: pin53 of IC1504/SCL0_400K: pin54 of
YES IC1504, etc.).
Does the HPD signal come from pin (45) of IC1504 to pin (19) of
SC1503?
_ NO
Check the line between the pin (45) of IC1504 and the
pin (19) of SC1503.
Check IC1504 and its peripheral circuits
(SDA0_400K: pin53 of IC1504/SCL0_400K: pin54 of
YES IC1504, etc.).
I Are there the TMDS signal inputs at pins (19/20) (CLK-/+), (21/22)
(D0-/+), (23/24) (D1-/+), (25/26) (D2-/+), all of IC1504?
J' NO
Is IC1504 (pin43/pin44) accessed by 12C, with HDMI
connected, to read the DDC_I2C SDA/SCL data?
_ NO
Check the DDC line and its peripheral circuits.
(IC1504 and its peripherals).
YES YES
Are there the TMDS signal inputs at pins (AJ6/AK6) (CLK-/+), (AJ7/AK7) (D0-/+), (A J8/
AK8) (D1-/+), (AJ9/AK9) (D2-/+), all of IC3302 (CPU)?
NO Check IC1504, IC3302 and their peripheral
circuits.
_' YES
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of IC3302?
LVDS TX 0 DATA0_P/N (C14/D14), LVDS TX 0 DATAI_P/N (C15/D15),
LVDS TX 0 DATA2_P/N (C16/D16), LVDS TX 0 DATA3_P/N (C18/D18),
LVDS TX 0 DATA4_P/N (C19/D19), LVDS TX 0 CLK P/N (C17/D17),
LVDS TX 1 DATA0_P/N (A14/B14), LVDS TX 1 DATAI_P/N (A15/B15),
LVDS TX 1 DATA2_P/N (A16/B16), LVDS TX 1 DATA3_P/N (A18/B18),
LVDS TX 1 DATA4_P/N (A19/B19), LVDS TX 1 CLK_P/N (A17/B17).
NO
Check IC3302 and its peripheral circuits.
(IC3501/IC3502, etc.)
_' YES
Check the panel module.
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