LC-46SB57U/LC-52SB57U
6 – 6
<HDMI input> No video (6)-1
HDMI: No external input video [INPUT-5]
HDMI: No external input video [INPUT-7]
Is INPUT-5 selected on the input select menu screen?
Is INPUT-7 selected on the input select menu screen?
YES
NO
YES
NO
Select INPUT-5 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 SC1601 to pin (36) of
IC1605 (HDMI_SW1)?
Does the DDC5V signal come from pin (18) of SC1602 to pin (42) of
IC1605 (HDMI_SW1)?
YES
NO
YES
NO
Check the line between the input terminals of SC1601
and IC1605.
Check the line between the input terminals of SC1601
and IC1605.
Check IC1605 and its peripheral circuits
(SDA1: pin53 of IC1605/SCL1: pin54 of IC1605, etc.).
Check IC1605 and its peripheral circuits
(SDA1: pin53 of IC1605/SCL1: pin54 of IC1605, etc.).
Does the HPD signal come from pin (35) of IC1605 to pin (19) of
SC1601?
Does the HPD signal come from pin (41) of IC1605 to pin (19) of
SC1602?
YES
NO
YES
NO
Check the line between the pin (35) of IC1605 and the
pin (19) of SC1601.
Check the line between the pin (41) of IC1605 and the
pin (19) of SC1601.
Check IC1605 and its peripheral circuits
(SDA1: pin53 of IC1605/SCL1:pin54 of IC1605, etc.).
Check IC1605 and its peripheral circuits
(SDA1: pin53 of IC1605/SCL1: pin54 of IC1605, etc.).
Are there the TMDS signal inputs at pins (1/2) (CLK-/+), (3/4) (D0-/
+), (5/6) (D1-/+), (7/8) (D2-/+), all of IC1605?
Are there the TMDS signal inputs at pins (11/12) (CLK-/+), (13/14)
(D0-/+), (15/16) (D1-/+), (17/18) (D2-/+), all of IC1605?
YES
NO
YES
NO
Is IC1605 (pin33/pin34) accessed by I2C, with HDMI
connected, to read the DDC_I2C SDA/SCL data?
Is IC1605 (pin39/pin40) accessed by I2C, with HDMI
connected, to read the DDC_I2C SDA/SCL data?
NO
NO
Check the DDC line and its peripheral circuits.
(IC1605 and its peripherals).
Check the DDC line and its peripheral circuits.
(IC1605 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 IC8001 (CPU)?
NO
Check IC1605, IC8001 and their peripheral
circuits.
YES
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of IC8001?
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 IC8001 and its peripheral circuits.
(IC8152/IC8153, etc.)
YES
Check the panel module.
