LC-32R24B
4 – 5
[HDMI signal input] No video (5)
HDMI: No external input video [INPUT-4] HDMI: No external input video [INPUT-5]
Is INPUT-4 selected on the input select menu screen? Is INPUT-5 selected on the input select menu screen?
YES
NO
YES
NO
Select INPUT-4 on the input select menu
screen for the right input signal.
Select INPUT-5 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 (72) of IC1604 (HDMI-SW)?
Does the DDC5V signal come from pin (18) of SC1602 to
pin (52) of IC1604 (HDMI-SW)?
YES
NO
YES
NO
Check the line between
the input terminals of
SC1601 and IC1604.
Check the line between the input ter-
minals of SC1602 and IC1604.
Does the HPD signal come from pin (56) of
IC1604 to pin (19) of SC1601?
Does the HPD signal come from pin (36) of IC1604 to pin
(19) of SC1602?
NO NO
Check the line between
IC1604 and SC1601.
IC1604 pin (56)
IC1607 pin (4)
SC1601 pin (19)
Check the line between IC1604 and
SC1602.
IC1604 pin (36)
IC1608 pin (4)
SC1602 pin (19)
Are there the TMDS signal inputs at pins (58/59) (CLK-/+), (61/62)
(D0-/+), (64/65) (D1-/+), (67/68) (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 IC1604?
YES
NO
YES
NO
Is IC1601 (EEPROM) accessed by I2C, with
HDMI connected, to read the DDC_I2C SCL/
SDA data?
Is IC1603 (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 cir-
cuits. (IC1601 and its peripherals).
Check the DDC line and its peripheral circuits. (IC1603 and
its peripherals).
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
Check IC1604, IC8001 and their peripheral circuits.
Are digital video (LVDS) signals sent from pins B5~7, C5~7, D5~7,
and E5~7 of IC8001?
NO Check the line between IC8001 and IC5103.
YES
Check IC8001 and peripheral circuits.
Are digital video (RSDS) signals sent from IC5103 to SC5201 and
SC5202?
NO Check the line between IC5103 and SC5201 and SC5202.
YES
Check IC5103 and peripheral circuits.
Check between (SC5201, SC5202) and LCD Panel.
Leandro Palmeira
eletronicagaucho@hotmail.com
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