LC50/58/65U35T
6 – 7
No video (1)-3
HDMI:No external input video [HDMI3]
Is HDMI3 selected on the input select menu screen?
NO
Select HDMI3 on the input select menu screen for the right input signal.
YES
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line between the pin(18) of SC1503 and the pin(86) of
IC2502.
Does the DDC5V signal come from pin(18) of SC1503 to
pin(86) of IC2502(HDMI-SW)?
YES
Does the HPD signal come from pin(85) of IC2502 to pin(19) of
SC1503?
NO
Check the line between the pin(19) of SC1503 and the pin(85) of
IC2502.
YES
Is IC2502(HDMI-SW) accessed by I2C, with HDMI connected,
to read the DDC-I2C SCL/SDA data?
NO
Check the DDC-I2C line and its peripheral circuits..
SC1503 pin(15)(SCL), pin(16)(SDA)
IC2502 pin(84)(SCL), pin(83)(SDA)
YES
Does the HPD signal come from pin(F31/F30) of IC3303 to
pin(110/113) of IC2502?
NO
Check the line between the pin(F31/F30) of IC3303 and the pin(110/
113) of IC2502.
YES
Are there the TMDS signals at input pins of IC3301(CPU)?
NO
Check the TMDS line (between SC1503 and IC2502) and its peripheral
circuits.
[IC2502 TMDS input pins]
pin(67/68)(CLK-/+), pin(71/72)(D0-/+),
pin(73/74)(D1-/+), pin(75/76)(D2-/+).
YES
Check the TMDS line (between IC2502 and IC3303) and its peripheral
circuits.
[IC3303 TMDS input pins]
pin(B24/A24)(TMDS0_CLK-/+), pin(D23/C23)(TMDS0_D0-/+),
pin(D22/C22)(TMDS0_D1-/+), pin(B22/A22)(TMDS0_D2-/+).
pin(B21/A21)(TMDS1_CLK-/+), pin(B20/A20)(TMDS1_D0-/+),
pin(B19/A19)(TMDS1_D1-/+), pin(B18/A18)(TMDS1_D2-/+).
Check SC1503, IC2502, IC3303 and its peripheral circuits.
Is the T-CON PWB connected?
V_LOCKN pin(26) of SC3802 become Low if there is no prob-
lem in the connection.
NO
Check the T-CON PWB and harness.
Check IC3303 and SC3802 and their peripheral circuits in Main PWB.
YES
Are the V-By-One HS signal input to the pin of SC3802?
V_V/-(23/24pin), V_V/-(20/21pin),
V_V/-(17/18pin),
V_V/-(14/15pin), V_V/-(11/12pin),
V_V/-(8/9pin), etc
NO
Check IC3303 and its peripheral circuits.(IC3501/IC3502/IC3503, etc.)
YES
Check the panel module and harness.
Summary of Contents for LC-50U35T
Page 47: ...LC50 58 65U35T 8 4 19 18 17 16 15 14 13 12 11 10 BOARD SIDE A ...
Page 48: ...LC50 58 65U35T 8 5 A C B D E F G H 2 10 9 8 7 6 5 4 3 1 PRINTED WIRING B ...
Page 49: ...LC50 58 65U35T 8 6 19 18 17 16 15 14 13 12 11 10 NG BOARD SIDE B ...
Page 66: ...LC50 58 65U35T 9 17 ...
Page 90: ...LC50 58 65U35T 24 11 EXPLODED VIEW LC 50U35T EXPLODED VIEW LC 50U35T ...
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