LC-32D62U/LC-37D62U 1st
6 – 4
[HDMI signal input] No video (4)
No external input video [INPUT-4]
Is INPUT-4 selected on the input select menu screen?
YES
NO
Select INPUT-4 on the input select menu screen for the
right input signal.
NO
Does the HOT PLUG detection function?
NO
Check the line between SC1501 and IC9101 (CPLD)
(Q1506, Q1508, etc.).
Does the HDMI_HPG3 signal come from pin (18) of
connector (SC1501) to pin (66) of IC9101 (CPLD)?
YES
Does the HDMI_PLG_ENB signal come from pin (81)
of IC9101 to pin (33) of IC1510 (HDMI/HDCP/DVI
COMPLIANT RECEIVER) and pin (40) of IC1507 (DVI/
HDMI SWITCH)?
NO
Check the line between IC9101 and IC1507/IC1510.
YES
Does the HDP3 signal come from pin (44) of IC1507 to
pin (19) of SC1501?
NO Check the line between IC1507 and SC1501.
Does the signal come from connector (SC1501) to the input pins (48 and
49) (CLK±), (51 and 52) (D0±), (54 and 55) (D1±), and (57 and 58) (D2±),
all of IC1507?
NO
Is IC1501 (EEPROM) accessed by I2C, with HDMI con-
nected, to read the DDC_I2C CLOCK/DATA data?
YES
NO
Check the DDC line and its peripheral circuits (IC1501
(EEPROM) and its peripherals).
Does the signal come from pins (34 and 35) (CLK±), (31 and 32) (D0±),
(28 and 29) (D1±), and (25 and 26) (D2±) of IC1507 to pins (58 and 59),
(62 and 63), (66 and 67), and (70 and 71) of IC1510?
NO
Check IC1507, IC1510 and their peripheral circuits.
YES
Are there the U3VINY [7:0], U3VINR [7:0], U3VINPBPR [7:0], U3VDIN,
U3HDIN, U3DEIN and U3VINCLK signal outputs from IC1510?
NO Check IC1510 and its peripheral circuits.
YES
Are there the U3VINY [7:0], U3VINR [7:0], U3VINPBPR [7:0], U3VDIN,
U3HDIN, U3DEIN and U3VINCLK signal inputs at IC3301 (VPC)?
NO Check the line between IC1510 and IC3301.
YES
Is there the LVDS signal output at the LVDS 1st channel and 2nd channel
of IC3301?
TA2_P/M (AJ30/AK30), TB2_P/M (AJ29/AK29), TC2_P/M (AJ28/AK28),
TD2_P/M (AJ26/AK26), TE2_P/M (AJ25/AK25), TCLK2_P/M (AJ27/
AK27), TA1_P/M (AB29/AB30), TB1_P/M (AC29/AC30), TC1_P/M
(AD29/AD30), TD1_P/M (AF29/AF30), TE1_P/M (AG29/AG30),
TCLK1_P/M (AE29/AE30)
NO
Check IC3301 and its peripheral control circuits (IC3501,
IC3502, IC8101, etc.).
YES
Check the panel module.
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