Sharp LC 52SB55U - Page 47

LC-52SB55U
6 – 7
[HDMI input] No video (6)
HDMI: No external input video [INPUT-7] HDMI: No external input video [INPUT-8]
Is INPUT-7 selected on the input select menu screen? Is INPUT-8 selected on the input select menu screen?
YES
NO
YES
NO
Select INPUT-7 on the input select menu screen for the
right input signal.
Select INPUT-8 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 SC1603 to pin(AN10) of
IC8001(CPU)?
Does the DDC5V signal come from pin(18) of SC1804 to pin(AH11) of
IC8001(CPU)?
YES
NO
YES
NO
Check the line between the input terminals of SC1603
and IC8001. (Q1606, etc.)
Check the line between the input terminals of SC1804 and
IC8001. (Q1810, etc.)
Check the line between the pin(AN8) and (AG4) of
IC8001.
Check the line between the pin(AL9) and (AL3) of IC8001.
Does the HPD signal come from pin(64) of IC1604 to pin(19) of
SC1601?
Does the HPD signal come from pin(35) of IC1804 to pin(19) of
SC1804?
YES
NO
YES
NO
Check the line between the pin(64) of IC1604 and the
pin(19) of SC1601. (Q1605, etc.)
Check the line between the pin(35) of IC1804 and the
pin(19) of SC1804. (Q1809, etc.)
Check the line between the pin(31) of IC1604 and the
pin(AF8) of IC8001.
Check the line between the pin(31) of IC1804 and the
pin(AL2) of IC8001.
Are there the TMDS signal inputs at pins(4/5)(CLK-/+), (7/8)(D0-/+),
(10/11)(D1-/+), (13/14)(D2-/+), all of IC1604?
Are there the TMDS signal inputs at pins(38/39)(CLK-/+), (41/42)(D0-/
+), (44/45)(D1-/+), (47/48)(D2-/+), all of IC1804?
YES
NO
YES
NO
Is IC1603(EEPROM) accessed by I2C, with HDMI con-
nected, to read the DDC_I2C SCL/SDA data?
Is IC1805(EEPROM) accessed by I2C, with HDMI con-
nected, to read the DDC_I2C SCL/SDA data?
NO NO
Check the DDC line and its peripheral circuits. (IC1603
and its peripherals)
Check the DDC line and its peripheral circuits. (IC1805 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)?
Are there the TMDS signal inputs at pins(AM1/AM2)(CLK-/+), (AN1/
AN2)(D0-/+), (AM3/AM4)(D1-/+), (AP2/AN3)(D2-/+), all of
IC8001(CPU)?
YES
NO
YES
NO
Check IC1604, IC8001 and their peripheral circuits. Check IC1804, 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),
YES
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.
Check the panel module.