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Models:
LTA-20E304
LTA-20E305
LTA-20E304MT
LTA-20E305MT
LTA-20E305DMT
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20 LCD-TV Service Manual
1. The System Block Diagram&the Block's Function Description
2. Schematic Circuit Diagram
3. Interconnection Diagram
4. Critical Connpoents List
5. Service Tools and Epuipment
A B C D E
MPX2_8201
MPX2
MPX2_8201 3
VCC V33 SCT1_AUR_OUT
MPX2 10 AVV33 ONLY FOR SCART PORT SCT1_AUL_OUT
SCT1_AUR_OUT 11
SCT1_AUL_OUT 11
L82
L9 NC/FB MPXVCC
TUNER MPX2 TO SCART FB MPXVCC MPXVCC
NC/FB
TUNER_CVBS_OUT + CE7 FB + SCART AUDIO OUTPUT
TUNER_CVBS_OUT 10
NC/100uF/16V CE133 CB165
PT100/16V NC/10uF/10v NC/0.1uF R401
TUNER VIDEO INPUT 0805 C0603/SMD NC/10K SCT1_AV_OUT
SCT1_AV_OUT 11
R0603/SMD
2
TESTP2 CE127 R403 NC/10R
TESTP2 3
+
MPX2 NC/33uF/16V R0603/SMD
1 Q25
PT100/16V NC/2N3904 SCART VIDEO OUTPUT
MT8201 CVBS OUTPUT SOT23/SMD CE128 NC/10uF/16V R406
TUL_OUTPUT PT100/16V NC/0 SCT1_AUL_OUT
3
+
R0603/SMD
4 4
R410 NC R407 TU_CVBS_OUT
TU_CVBS_OUT 7
AVL_OUT R408 R409 SCT1_AUL R0603/SMD NC
AVL_OUT 8,10
AVR_OUT NC/10K NC/1K R0603/SMD
AVR_OUT 8,10 CE126
R0603/SMD R0603/SMD TUNER VIDEO OUTPUT
MT8201 AUDIO OUTPUT AVR_OUT SCT1_AUR R411
0R
+
SCT1_RED R0603/SMD TUL_OUTPUT
SCT1_RED 11 NC/10uF/16V TUL_OUTPUT 8
SCT1_GRN TUR_OUTPUT
SCT1_GRN 11 PT100/16V TUR_OUTPUT 8
SCT1_BLU MPXVCC MPXVCC
SCT1_BLU 11
TU OUTPUT
2
2
R413 NC/10R R414 NC/10R
Q26 1 R0603/SMD R0603/SMD
1 Q27
CE129 NC/2N3904 NC/2N3904 SCT_GP
SCT1_AUL SOT23/SMD SOT23/SMD SCT_GP 7,11
SCART RGB INPUT AVL_OUT CE130 CE131 NC/10uF/16V SCT_BP
MPX2_8201 SCT_BP 7,11
+
TUR_OUTPUT R416 NC/0 SCT1_AUR_OUT SCT_RP
3
3
+
+
SCT_RP 7,11
NC/10U/16V R0603/SMD
NC/10uF/16V PT100/16V R421 NC PT100/16V R417
PT100/16V R418 R419 R420 SCT1_AUR R0603/SMD NC SCART RGB TO MT8211
SCL0 NC NC/1K NC/1K R0603/SMD
SCL0 3,6
R0603/SMD R0603/SMD R0603/SMD SCART_FB
SCART_FB 3
SWITCH
SCT1_FB_IN FAST BLANKING
SCT1_FB_IN 11
CONTROL SCART I/O
SWITCH FAST BLANKING
AVV50 AVV50
DE_SOG DE_SOG 3
VCC
R425
NC/3.3K
R0603/SMD
2
L83 CE137 NC/220uF/10V SCT1_RED SCT_RP
AVV50 TUNER_CVBS_OUT R426 NC/10 1 Q28 SCT1_GRN SCT_GP
R0603/SMD NC/2N3904 SCT1_BLU SCT_BP
+
3 3
FB SOT23/SMD
FB + CE132 TU_CVBS0
3
100uF/16v CB166 R15 0R
PT100/16V 0.1uF R430
C0603/SMD R0603/SMD NC/10K R431 AVV33 AVV33 DE_SOG R178 SCART_FB_SELL
R0603/SMD NC/75 NC
R0603/SMD
R443
SCART_FB NC/1K R444
AVV50 R0603/SMD NC/10K
U27 R0603/SMD
SCART_FB SCT1_FB_IN 1 6 SCART_FB_SELL
TO MT8201 B C
2
2 GND VCC 5
R435 10 1 Q29 R445 NC/0R 3 4
2N3904 R0603/SMD A Y AVV30
R0603/SMD SOT23/SMD CE141 NC/100uF/16V NC/SN74AUP1T97
R436 0R PT100/16V TU_CVBS_OUT SOT-23-6
3
+
R0603/SMD R448 R449 + CE142 CB167 R450
R440 0R NC/75 NC/10K NC/10uF/10V NC/0.1uF NC/10K
R441 R0603/SMD R0603/SMD R0603/SMD 0805 C0603/SMD R0603/SMD
75
R0603/SMD
2 2
BYPASS VIDEO OUTPUT
ONLY FOR SCART PORT
AVV50
TU_CVBS0
AVV50
R446
NC/3.3K
R0603/SMD R447
2
R466 NC/0 CE143 NC/0
TESTP2 MT8201_CVBS_OUTPUT R451 NC/10 1 Q30 R0603/SMD
R0603/SMD NC/2N3904
+
R0603/SMD NC/220uF/10V SOT23/SMD R453 NC/0 NC/0
PT100/16V SCT1_AVO R0603/SMD CE144 R455 SCT1_AV_OUT
3
+
R457 R0603/SMD
NC/10K NC/10uF/10V
R0603/SMD R458 PT100/16V
NC/75 R459
R0603/SMD NC/75
L84 NC/FB R0603/SMD
FB
1 1
Prepared By
LCD-TV
Checked By BOARD
POWER
Approved By DIAGRAM PAGE 12 OF 12
Version Ver0.1 EBODA ELEC
EJS8201V1 CO.,LTD
A B C D E
A B C D E
SCT1_AUR_OUT
SCT1_AUR_OUT 12
SCT1_AUL_OUT
SCT1_AUL_OUT 12
SCART AUDIO OUTPUT
SCT1_AV_OUT SCT1_G_IN SCT1_GRN SCT1_AV_IN SCT1_AV SCT1_AUR_IN SCT1_AUL_IN SCT1_AUR_OUT
SCT1_AV_OUT 12
SCT1_RED
SCT1_RED 12
1
1
1
1
1
SCT1_GRN
SCT1_GRN 12
SCT1_BLU
SCT1_BLU 12
SCART VIDEO OUTPUT D60 D61 D62 D63 D67
EZJZ0V800AA/NC EZJZ0V800AA/NC EZJZ0V800AA/NC EZJZ0V800AA/NC EZJZ0V800AA/NC
ESD0603/SMD ESD0603/SMD ESD0603/SMD ESD0603/SMD ESD0603/SMD
ADC0
2
2
2
2
2
4 ADC0 3 4
SCART RGB INPUT
SCT1_AUL_IN
SCT1_AUL_IN 8
I/O CONTROL SCT1_AUR_IN
SCT1_AUR_IN 8
ATSC_FL P6 SCT1_FB_IN SCT1_AV_OUT
ATSC_FL 8 SCT1_B_IN
ATSC_FR NC/SCART SCT1_BLU SCT1_AUL_OUT
ATSC_FR 8
1
1
SCART/21P/DIP
1
1
SCART AUDIO INPUT
D68 D64
I/O CONTROL 1 SCT1_AUR_OUT D65 D70 EZJZ0V800AA/NC EZJZ0V800AA/NC
AUDIO_OUT_R EZJZ0V800AA/NC EZJZ0V800AA/NC ESD0603/SMD ESD0603/SMD SCT1_FB_IN
SCT1_FB_IN 12
2 SCT1_AUR_IN ESD0603/SMD ESD0603/SMD
AUDIO_IN_R
2
2
D_DETECT SCT1_AUL_OUT
2
2
D_DETECT 3 AUDIO_OUT_L 3
4 CONTROL SCART I/O
GND_Audio
GND_Blue 5
6 SCT1_AUL_IN SCT1_AV_IN
AUDIO_IN_L SCT1_AV_IN 7
SCT1_B_IN R14 0R/NC SCT1_SC
Blue_I/O 7 SCT1_SC 7
8 SCT1_FS_IN AVV50
FS R0603/SMD
9 SCART VIDEO OUTPUT
GND_Green
10 R358 AVV50 Y0_IN
Commas data2 Y0_IN 7,12
NC/3.3K PB0_IN
PB0_IN 7,12
11 SCT1_G_IN R0603/SMD PR0_IN
Green_I/O PR0_IN 7,12
2
CE124 220uF/10V Y1_IN
Y1_IN 7
12 SCT1_R_IN PT220/16V R360 NC/10 1 Q21 PB1_IN
Comms data1 PB1_IN 7
R0603/SMD NC/2N3904 PR1_IN
+
PR1_IN 7
1
13 SOT23/SMD
GND_Red R361 NC/75 SCT1_RED
3
3 14 D66 R363 R0603/SMD 3
GND_Blanking EZJZ0V800AA/NC NC/10K YPBPR INPUT
15 SCT1_R_IN ESD0603/SMD R0603/SMD R364 R365
Red_I/O NC/75 NC/75
SCT1_FB_IN SCT1_R_GND R0603/SMD R0603/SMD