AOC L20W451T, Service Manual

Page: 43 / 92

20” LCD TV AOC L20W451T
43
10. Schematic Diagram
10.1 Main Board
715T1539-2-2
VGA_VS
RxD
R243 22
� 1/16W
C131
0.001uF
C
10
1
0
.1
uF
D102
MLL4148
SVIDEO_C
VGAVS
TxD
FB23
150 OHM
1 2
5V_SB
CN101
CONN
1
2
3
4
5
6
7
8
9
10
LOW:INPUT1
R245 22
� 1/16W
5V
TUNE
R_
O
UT
C819
0.1uF
R882
75
� 1/16W
5V_SB
L_OUT 11
SCART1_CVBS 10
R549
75
� 1/16W
5V
Audio_L- 11
VGA_BIN 4
SC1 7,8
ZD102
MLL752A
+
C102
10uF/16V
CN104
CONN
1
2
5V
VGAHS
C827 2.2uF/16V
5V
SVIDEO_Y
R880
22K
� 1/16W
R114
0
� 1/16W
VGA_SCL
Q102
2N7002
COMP_PB 4
D
S
SD1 7,8
SC1_FB 4
R548
75
� 1/16W
G
3.3V_SB
R883
75
� 1/16W
R240
22
� 1/16W
C105
0.1uF
TV
_
MA
IN
4
R110 0
� 1/16W
3.3V_SB
C104
0.1uF
+
C816
10uF/16V
5V_SB
VGA_VSIN 4
SCART1_FB
W_ENABLE 7
C111
22pF
C108
0.1uF
L107 150 OHM
INV_PRO 7
Q103
PMBS3904
3
2
1
715T1539-1-2
3.3V_SB
TUNE
R_
O
UT
C136
470pF
C805
47pF
R252 10K
� 1/16W
L111
120 OHM
SC2_FN 7, 10
Y _IN1
FB26
150 OHM
1 2
R244 NC
ZD101
MLL752A
C
11
5
0
.1
uF
C804
100pF
SC1 7,8
SCART2_CVBS
L104 150 OHM
REMOTE
RN12
10K
� 1/16W
1 2 3 4
8 7 6 5
C826 10uF/16V
EAR_R 11
VGAHS 7
U103 74HC4052D
12
14
15
11
1
5
2
4
6
10
9
13
3
16
8
7
X0
X1
X2
X3
Y 0
Y 1
Y 2
Y 3
EN
A
B
X
Y
VDD GN
D
VEE
C107
0.1uF
COMP_Y 4
EAR_L 11
C_IN1
8-pin, 300mil DIP with socket
AV_1 10
R241
33
� 1/16W
5V_SB
R104 100K
� 1/16W
C135
470pF
PC_R_I 11
VGA_RIN 4
LP108
120 OHM(8P4R)
4
3
2
1 8
7
6
5
5V_SB
74LV
C
14
U101
74LVC14
1 2
3 4
5 6
9 8
11 10
13 12
7 14
1A 1Y
2A 2Y
3A 3Y
4A 4Y
5A 5Y
6A 6Y
GND VCC
11
+
C818
47uF/16V
12V
CN106
CONN
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
32
34
36
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
31
33
35
NC
CVBS_SEL 4
R886
18K
� 1/16W
D104
BAT54C
1
2
3
R887
470
� 1/16W
R230
NC
Audio_R- 11
SC1_FN 7, 10
L101 150 OHM
5V
VGA_SDA
C138
0.001uF
C
11
4
1
00
p
F
R111 0
� 1/16W
I2C Address: 1010 000x
U102
24LC21A
8
5
6
4 7
3
2
1
VCC
SDA
SCL
GND VCLK
NC2
NC1
NC0
Detect_VGAVS 7
D103
MLL4148
T
V_PI
P
1
0
To mcu
SCART2_C
5V
SCART1_G 4,10
Y _IN1 4
TxD
5V
RxD
R109 0
� 1/16W
Q101
PMBS3906
VGAVS 7
VGAHS
C134
470pF
D101
MLL4148
R242 NC
D105
BAT54S
2
1
3
R113
2.2K
� 1/16W
Q107
2N7002
Q105
PMBS3904
3
2
1
R846
33K
� 1/16W
Q106
PMBS3906
VGA_HS
R229
NC
SCART1_B 4,10
SVIDEO_SW 7
TX 7
C829 2.2uF/16V
EMI
FB
R851 0
� 1/16W
R106
1K
� 1/16W
C828 10uF/16V
12V_T
SCART2_CVBS 4,10
11
D108
BAT54S
2 1
3
C225
0.1uF
R112
NC
HIGH:INPUT2
DET_FB 7
PC_L_I 11
U104
PI5V330Q
1
8
15
16 2
3
5
6
11
10
14
13
4
7
9
12
IN
GND
EN
VCC S1A
S2A
S1B
S2B
S1C
S2C
S1D
S2D
DA
DB
DC
DD
R253 10K
� 1/16W
BL_ADJ 3,7
Detect_VGAHS 7
C800
0.047uF
R107
NC
L108 150 OHM
1
I/O
AOC ( Top Vi ct or y) El ect r oni cs Co. , Lt d.
B
2
14
Tuesday , June 13, 2006
Title
Size Document Number Rev
Date: Sheet of
SCART2_C 4,10
R848
100K
� 1/16W
CN105
CONN
1
2
3
4
5
6
C
11
6
0
.1
uF
+5VP
5V
R_OUT 11
VGA_HSIN 4
SD1 7,8
D106
BAT54S
2
1
3
TUNER_OUT
R103 NC
C_IN1 4
VGAVS
C803
0.47uF/50V
5V_SB
3.3V_SB
R102
NC
VGA_SDA_IN
R849
33K
� 1/16W
SVIDEO_Y
R884
18K
� 1/16W
VGA_GIN 4
VGA_HS
R850 0
� 1/16W
+
C817
10uF/16V
CN102
CONN
1
2
3
SCART1_R 4,10
C132
0.001uF
R847
1M
� 1/16W
L105 150 OHM
COMP_PR 4
CN107
CONN
1
2
3
4
5
6
7
8
C133
470pF
VGA_VS
R105
100
� 1/16W
+12VP
SVIDEO_C
C106
0.1uF
C802
0.47uF/50V
Q104
PMBS3904
3
2
1
L109 150 OHM
R881
22K
� 1/16W
FB
NC
C110
22pF
LP107
120 OHM(8P4R)
1
2
3
4 5
6
7
8
R547
75
� 1/16W
R239
22
� 1/16W
KEY _AD 7
RX 7
ISP_SW 7
VGA_SCL_IN
C221
0.1uF
L102 150 OHM
3.3V_SB
REMOTE 7
SCART1_FB 10
C801
0.047uF
L110
120 OHM
R885
470
� 1/16W
CN108
DB15
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
1
6
1
7
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
G
G
RN11
30K
� 1/16W
1 2 3 4
8 7 6 5