LC-52SB55U
6 – 6
[HDMI input] No video (6)
HDMI: No external input video [INPUT-5] HDMI: No external input video [INPUT-6]
Is INPUT-5 selected on the input select menu screen? Is INPUT-6 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-6 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(AM10) of
IC8001(CPU)?
Does the DDC5V signal come from pin(18) of SC1602 to
pin(AL11) of IC8001(CPU)?
YES
NO
YES
NO
Check the line between the input terminals of
SC1601 and IC8001. (Q1602, etc.)
Check the line between the input terminals of
SC1602 and IC8001. (Q1604, etc.)
Check the line between the pin(AN8) and (AG4) of
IC8001.
Check the line between the pin(AN8) and
(AG4) of IC8001.
Does the HPD signal come from pin(35) of IC1604 to pin(19) of SC1601? Does the HPD signal come from pin(35) of IC1604 to pin(19)
of SC1602?
YES
NO
YES
NO
Check the line between the pin(35) of IC1604 and
the pin(19) of SC1601. (Q1601, etc.)
Check the line between the pin(50) of IC1604
and the pin(19) of SC1602. (Q1603, etc.)
Check the line between the pin(31) of IC1604 and
the pin(AF8) of IC8001.
Check the line between the pin(31) of IC1604
and the pin(AF8) of IC8001.
Are there the TMDS signal inputs at pins(38/39)(CLK-/+), (41/42)(D0-/+), (44/
45)(D1-/+), (47/48)(D2-/+), all of IC1604?
Are there the TMDS signal inputs at pins(53/54)(CLK-/+), (56/
57)(D0-/+), (59/60)(D1-/+), (62/63)(D2-/+), all of IC1604?
YES
NO
YES
NO
Is IC1601(EEPROM) accessed by I2C, with HDMI
connected, to read the DDC_I2C SCL/SDA data?
Is IC1602(EEPROM) accessed by I2C, with
HDMI connected, to read the DDC_I2C SCL/
SDA data?
NO NO
Check the DDC line and its peripheral circuits.
(IC1601 and its peripherals)
Check the DDC line and its peripheral circuits.
(IC1602 and its peripherals)
Are there the TMDS signal inputs at pins(AH2/AH1)(CLK-/+), (AH3/AH4)(D0-/+), (AJ1/AJ2)(D1-/+), (AJ3/AK2)(D2-/+), all of IC8001(CPU)?
YES
NO
Check IC1604, IC8001 and their peripheral
circuits.
Are the LVDS signal outputs at the LVDS 1st channel and 2nd channel of IC8001?
LVDS_TX_0_DATA0_P/N(C7/B7), LVDS_TX_0_DATA1_P/N(E7/D7),
LVDS_TX_0_DATA2_P/N(C6/B6), LVDS_TX_0_DATA3_P/N(C5/B5),
LVDS_TX_0_DATA4_P/N(E5/D5), LVDS_TX_0_CLK_P/N(E6/D6),
LVDS_TX_1_DATA0_P/N(B4/A4), LVDS_TX_1_DATA1_P/N(E4/D4),
LVDS_TX_1_DATA2_P/N(B3/A3), LVDS_TX_1_DATA3_P/N(B1/B2),
LVDS_TX_1_DATA4_P/N(F5/F6), LVDS_TX_1_CLK_P/N(C2/C3),
NO
Check IC8001 and its peripheral circuits.
(IC8151 thru IC8154, etc.)
Is IC8451(EEPROM for HDCP) accessed by
I2C(SCL2/SDA2) to read HDCP data?
Check IC8451 and its peripheral circuits.
YES
Check the panel module.
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