Sharp 52LE920UN, 60LE920UN service manual Hdmi, No external

I

I

LC-52LE920UN/LC-60LE920UN

<HDMI input>

No video 15)-1

I

HDMI:

No external

input video [INPUT-4]

I

I

HDMI:

No external

input video

[INPUT-5]

I

Is INPUT-4

selected

on the input select menu screen?

I Is INPUT-5

selected

on the input select menu screen?

I

_' NO

_' NO

Select INPUT-4 on the input select menu screen for the

Select

INPUT-5 on the input select

menu screen for the

right input signal.

YES

right input signal.

YES

Does the HOT PLUG detection

function?

Does the HOT PLUG detection

function?

Does the DDC5V signal come from

pin (18) of SC1503

to pin (46) of

Does the DDC5V signal come from

pin (18) of

SC1502

to pin (42) of

IC1504 (HDMI_SW)?

IC1504 (HDMI_SW)?

NO

_ NO

Check the line between

the input

terminals

of SC1503

Check

the line

between

the input

terminals

of SC1502

and IC1504.

and IC1504.

Check

IC1504

and

its peripheral

circuits

Check

IC1504

and

its peripheral

circuits

(SDA0_400K:

pin53

of IC1504/SCL0_400K:

pin54 of

(SDA0_400K:

pin53 of IC1504/SCL0_400K:

pin54 of

YES

IC1504,

etc.).

YES

IC1504, etc.).

Does the HPD signal come from pin (41) of IC1504 to pin (19) of

Does the HPD signal come from pin (45) of IC1504 to pin (19) of

SC1502?

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 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 _ NO

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

YES YES

AK8) (D1-/+), (AJ9/AK9) (D2-/+), all of IC3302 (CPU)?

Are there the TMDS signal inputs at pins (AJ6/AK6) (CLK-/+), (AJ7/AK7) (D0-/+), (A J8/

_' 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).

_' YES

Check the panel module.

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

NO	circuits.		IC3302 and their peripheral
	Check	IC1504,
NO	Check	IC3302 and its peripheral circuits.
	(IC3501/IC3502,		etc.)

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