LC-40/46/52/60LE820UN
7 – 6
<HDMI input> No video (5)-2
HDMI: No external input video [INPUT-6]
HDMI: No external input video [INPUT-7]
Is INPUT-6 selected on the input select menu screen?
Is INPUT-7 selected on the input select menu screen?
YES
NO
YES
NO
Select INPUT-6 on the input select menu screen for the
right input signal.
Select INPUT-7 on the input select menu screen for the
right input signal.
Does the HOT PLUG detection function?
Does the HOT PLUG detection function?
Does the DDC5V signal come from pin (18) of SC1501 to pin (36) of
IC1504 (HDMI_SW)?
Does the DDC5V signal come from pin (18) of SC1505 to pin (32) of
IC1504 (HDMI_SW)?
YES
NO
YES
NO
Check the line between the input terminals of SC1501
and IC1504.
Check the line between the input terminals of SC1505
and IC1504.
Check IC1504 and its peripheral circuits.
(SDA0_400K: pin53 of IC1504/SCL0_400K: pin54 of
IC1504, etc.).
Check IC1504 and its peripheral circuits
(pin53 of IC1504/SCL1: pin54 of IC1504, etc.).
Does the HPD signal come from pin (35) of IC1504 to pin (19) of
SC1501?
Does the HPD signal come from pin (31) of IC1504 to pin (19) of
SC1505?
YES
NO
YES
NO
Check the line between the pin (31) of IC1504 and the
pin (19) of SC1501.
Check the line between the pin (41) of IC1504 and the
pin (19) of SC1505.
Check IC1504 and its peripheral circuits
(SDA0_400K: pin53 of IC1504/SCL0_400K: pin54 of
IC1504, etc.).
Check IC1504 and its peripheral circuits
pin53 of IC1504/SCL1: pin54 of IC1504, etc.).
Are there the TMDS signal inputs at pins (1/2) (CLK-/+), (3/4) (D0-/
+), (5/6) (D1-/+), (7/8) (D2-/+), all of IC1504?
Are there the TMDS signal inputs at pins (65/66) (CLK-/+), (67/68)
(D0-/+), (69/70) (D1-/+), (71/72) (D2-/+), all of IC1504?
YES
NO
YES
NO
Is IC1504 (pin33/pin34) accessed by I2C, with HDMI
connected, to read the DDC_I2C SDA/SCL data?
Is IC1504 (pin29/pin30) accessed by I2C, 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).
Check the DDC line and its peripheral circuits.
(IC1504 and its peripherals)
Are there the TMDS signal inputs at pins (AJ6/AK6) (CLK-/+), (AJ7/AK7) (D0-/+), (AJ8/
AK8) (D1-/+), (AJ9/AK9) (D2-/+), all of IC3302 (CPU)?
YES
NO
YES
Check IC1504, IC3302 and their peripheral circuits.
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_DATA1_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_DATA1_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.
