Sharp 60LE920UN, 52LE920UN service manual Hdmi input, Hdmi No external input video INPUT-6

LC-52LE920UN/LC-60LE920UN

I		<HDMI input>
I	HDMI: No external input video [INPUT-6]	I

Is INPUT-6 selected on the input select menu screen?

_' NO

Select INPUT-6 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 SC1501 to pin (36) of IC1504 (HDMI_SW)?

J_ NO

Check the line between the input terminals of SC1501 and IC1504.

Check IC1504 and its peripheral circuits.

(SDA0_400K: pin53 of IC1504/SCL0_400K: pin54 of YES IC1504, etc.).

DoesSC1501?the HPD signal come from pin (35) of IC1504 to pin (19) of

No video 15)-2				I
I	HDMI:	No external	input video [INPUT-7]	I
I Is INPUT-7	selected	on the input	select menu screen?	I
	_' NO

Select INPUT-7 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 SC1505 to pin (32) of IC1504 (HDMI_SW)?

_ NO

Check the line between the input terminals of SC1505 and IC1504.

Check IC1504 and its peripheral circuits

(pin53 of IC1504/SCL1 : pin54 of IC1504, etc.).

YES

Does the HPD signal come from pin (31) of IC1504 to pin (19) of SC1505?

_ NO

Check the line between the pin (31) of IC1504 and the pin (19) of SC1501.

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 (1/2) (CLK-/+), (3/4) (D0-/ +), (5/6) (D1-/+), (7/8) (D2-/+), all of IC1504?

_ NO

Check the line between the pin (41) of IC1504 and the pin (19) of SC1505.

Check IC1504 and its peripheral circuits

pin53 of IC1504/SCL1 : pin54 of IC1504, etc.).

YES

Are there the TMDS signal inputs at pins (65/66) (CLK-/+), (67/68) (D0-/+), (69/70) (D1-/+), (71/72) (D2-/+), all of IC1504?

_ NO

Is IC1504 (pin33/pin34) accessed by 12C, with HDMI connected, to read the DDC_I2C SDA/SCL data?

_ NO

Is IC1504 (pin29/pin30) accessed by 12C, with HDMI connected, to read the DDC_I2C SDA/SCL data?

_ NO _ NO

Check the DDC line and its peripheral circuits. (IC1504 and its peripherals).

YES

Are there the TMDS signal inputs at pins (AJ6/AK6) (CLK-/+), (AJ7/AK7) AK8) (D1-/+), (AJ9/AK9) (D2-/+), all of IC3302 (CPU)?

Check the DDC line and its peripheral circuits. (IC1504 and its peripherals)

YES

(D0-/+), (A J8/ J]

	J' NO
	I Check IC1504,	IC3302	and their		peripheral circuits.		I
YES								YES
Are the	LVDS signal outputs at the		LVDS 1st channel and 2nd channel of IC3302?					NO	Check IC3302	and its peripheral circuits.
LVDS	TX 0 DATA0_P/N	(C14/D14),		LVDS	TX 0	DATAI_P/N	(C15/D15),		(IC3501/IC3502,	etc.)
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).
_' YES
[ Check	the panel module.

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