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LC-46DH65E/S, LC-46DH66E

4 – 10

                                            

Are the video signal and the synchronized signal input from pin 
(1, 2, 3)/(R, G, B), (14 and 13)/(V, H) of EXT4 (SC1504)?

NO

Check the connection and setup with the external DVI devices.

YES

Are the video signal and the synchronized signal input from pins 
(R1, T4, N3)/(R, G, B), pins (AF2, AE2)/(H, V) of IC8101 (DIGI-
TAL AV DECODER & MAIN CPU & VIDEO PROCESSER)?

NO

Check the line between SC1504 and IC8101.

YES

Refer to ”The picture doesn't appear in all modes.”

                                            
Does not the picture of the CVBS signal input to EXT8 go out?

Is a CVBS signal input to pin (6) of EXT8 (J505)?

NO

Check the setting of an external input device that connects with 
EXT8.

YES

Is CVBS signal from EXT8 (J505) sent to pin (12) of IC503 
(AV_SW.)?

NO

Check the line between J505 and IC503.

YES

Is CVBS signal output from pin (71) of IC503?

NO

Is V3_PLUG detection signal to pin (13) of IC503 input from pin 
(7) of EXT8 (J505)?

YES

NO

Check the IC503 and their peripheral circuits.

Is CVBS signal sent to pin (V4) of IC8101 (DIGITAL AV 
DECODER & MAIN CPU & VIDEO PROCESSER) from pin (71) 
of IC503?

NO

Check the line between IC503 and IC8101.

YES

Refer to “The picture doesn't appear in all modes.”

LC-46DH65E/S, LC-46DH66E

4 – 11

Is the Hot plug detection function output from pin (19) of the HDMI-
1(SC1502) normal?

NO

Check the line between SC1502 and pin(50) of 
IC1507(TMDS-SW).

Is the Hot plug detection function output from pin (19) of the HDMI-
2(SC1501) normal?

NO

Check the line between SC1501 and pin(35) of 
IC1507(TMDS-SW).

Is the Hot plug detection function output from pin (19) of the HDMI-
3(SC5301) normal?

NO

Check the line between SC5301 and pin(50) of 
IC5301(TMDS-SW).

YES

NO

Check the setting of an external input device that con-
nects with HDMI-1/2/3.

Is EDID data pins(11)/SCL1, (10)/SDA1 of IC1504(FRAM) accessed, and 
is it read from pins(15, 16) of a HDMI-1(SC1502)?
Is EDID data pins(14)/SCL2, pin(13)/SDA2 of IC1504(FRAM) accessed, 
and is it read from pins(15, 16) of a HDMI-2(SC1501)?

NO

Is access possible in the exchange of IC1504?

Is EDID data pins(5)/SCL3, (6)/SDA3 of IC1504(FRAM) accessed, and is 
it read from pins(15, 16) of a HDMI-3(SC5301)?

NO

YES

<HDMI-1/2>
Check the peripheral circuit of SC1501, SC1502, IC1504 
and IC1507.
<HDMI-3>
Check the peripheral circuit of SC5301, IC1504 and 
IC5301.

Is TMDS signal input into pins (54, 53/TMDS1_CLK_P/N), (57, 56/
TMDS1_D0_P/N), (60, 59/TMDS1_D1_P/N), (63, 62/ 
TMDS1_D2_P/N) of IC1507 (TMDS-SW) from HDMI-1(SC1502)?

NO

Check the line between HDMI-1(SC1502) and IC1507.

YES Is TMDS signal input into pins (39, 38/TMDS2_CLK_P/N), (42, 41/

TMDS2_D0_P/N), (45, 44/TMDS2_D1_P/N), (48, 47/ 
TMDS2_D2_P/N) of IC1507 (TMDS-SW) from HDMI-2 (SC1501)?

NO

Check the line between HDMI-2(SC1501) and IC1507.

Is TMDS signal input into pins(54, 53/TMDS3_CLKP/N), (57, 56/
TMDS3_D0P/N), (60, 59/TMDS3_D1P/N), (63, 62/ TMDS3_D2P/
N) of IC5301(TMDS-SW) from HDMI-3(SC5301)?

NO

Check the line between HDMI-3(SC5301) and IC5301.

YES

Are TMDS_Rx and the I2C_SINK signal output from IC5301 
respectively?
Pins(26, 27/TMDS3H_CLK_P/N), (23, 24/TMDS3H_D0_P/N), (20, 
21/TMDS3H_D1_P/N), (17, 18/TMDS3H_D2_P/N), (29, 30/
SCL3H_ SINK/SDA3H_SINK)

NO

Check the IC5301 and peripheral circuits.

YES

Is the TMDS_Rx/ I2C_SINK signal output from IC5301 input to 
IC1507(TMDS-SW)?
Pins(6,4 /TMDS3H_CLK_P/N), (8, 7/TMDS3H_D0_P/N), (11, 10/
TMDS3H_D1_P/N), (14, 13/TMDS3H_D2_P/N), (2, 1/SCL3H_ 
SINK/SDA3H_SINK)

NO

Check the line between IC5301 and IC1507.

YES

Are TMDS_Rx and the I2C_SINK signal output from IC1507 respectively?
Pins(26, 27/TMDS_CLK_P/N), (23, 24/TMDS_D0_P/N), (20, 21/ 
TMDS_D1_P/N), (17, 18/TMDS_D2_P/N), (29, 30/SCL_SINK/
SDA_SINK)

NO

Check the IC1507 and peripheral circuits.

YES

Is the TMDS_Rx/ I2C_SINK signal output from IC1507 input to 
IC8101(DIGITAL AV DECODER & MAIN CPU & VIDEO PROCESSER)?

NO

heck the line between IC1507 and IC8101.

Pins(K1, K2/TMDS_CLK_P/N), (L1, L2/TMDS_D0_P/N), (M1, M2/
TMDS_D1_ P/N), (N1, N2/TMDS_D2_P/N), (G2, G3/SCL_SINK/
SDA_SINK)

YES

Refer to “The picture doesn't appear in all modes” or “No 
sound output in all modes”

LC-46DH65E/S, LC-46DH66E

4 – 12

                                             

   

Is CVBS signal output into pin (19) of EXT1 (SC502) from pin 
(67) of IC503 (AV_SW)?

YES

Check the setting of an external input device that connects with 
EXT1.

Is CVBS signal output into pin (19) of EXT2 (SC501) from pin 
(65) of IC503 (AV_SW)?

YES

Check the setting of an external input device that connects with 
EXT2.

NO

Is TUNER_CVBS signal input to pin (24) of IC503 (AV_SW)?

YES

Check the IC503 and their peripheral circuits.

NO

Is TUNER_CVBS signal output from pin (5) of IC7503 
(VIDEO_LEV.)?

YES

Check the line between IC7503 and IC503.

NO

Is TUNER_CVBS signal output from pin (6) of TUNRE 
(TU7501)?

YES

Check the line between TU7501 and IC7503.

NO

Whether the TUNER circuit operates correctly is checked.

Is CVBS signal output into pin (19) of EXT1 (SC502) from pin 
(67) of IC503 (AV_SW)?

YES

Check the setting of an external input device that connects with 
EXT1.

Is CVBS signal output into pin (19) of EXT2 (SC501) from pin 
(65) of IC503 (AV_SW)?

YES

Check the setting of an external input device that connects with 
EXT2.

NO

Is H.264_CVBS signal input to pin (28) of IC503 (AV_SW)?

YES

Check the IC503 and their peripheral circuits.

NO

Is H.264_CVBS signal output from pin (C34) of IC5001 (H.264 
DECODER)?

YES

Check the line between IC5001 and IC503.

NO

Check the IC5001 and its peripheral circuits.

LC-46DH65E/S, LC-46DH66E

4 – 13

                                             

Is CVBS signal output into pin (19) of EXT2 (SC501)?

YES

Check the setting of an external input device that connects with 
EXT2.

NO

Is CVBS signal output to pin (65) of IC503?

YES

Check the line between IC503 and EXT2 (SC501).

NO

Is CVBS signal sent to pin (100) of IC503?

YES

Check the IC503 and peripheral circuits.

NO

YES

Is the I2C SERIAL DATA/CLOCK communication normal?
Pin32: SDA1/Pin31: SCL1

Is CVBS signal sent to pin (20) of EXT1(SC502)?

YES

Check the line between EXT1(SC502) and IC503.

NO

Check the setting of an external input device that connects with 
EXT1.

SCART2:                                    
No picture from EXT8 appears on EXT2- connected monitor.

Is CVBS signal output into pin(19) of EXT2 (SC501)?

YES

Check the setting of an external input device that connects with 
EXT2.

NO

Is CVBS signal output to pin (65) of IC503?

YES

Check the line between IC503 and EXT2(SC501).

NO

Is CVBS signal sent to pin (12) of IC503?

YES

Check the IC503 and peripheral circuits. 

NO

Is CVBS signal sent to pin (6) of EXT8(J505)?

YES

Check the line between EXT8(J505) and IC503.

YES

Check the setting of an external input device that connects with 
EXT8.

NO

Is V3_PLUGl detection signal to pin(13) of IC503 input from 
pin(7) of EXT8 (J505)?