AOC L20W451T Service Manual page 48

20"
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20" LCD TV
1/16W
1/16W
4.7K
4.7K
R821
R822
4.7K
R829
2
Detect_VGAVS
R830
2
VGAVS
R831
2
VGAHS
R832
8
RX_INT#
2,3
BL_ADJ
6,12
PWR_ON
5V-1_CPU
R833
R834
1/16W
4.7K
4.7K
RST_7117
76
P1_2
1/16W
R835
100
77
2
Detect_VGAHS
P1_1
1/16W
78
R836
100
8
SCDT
P1_0
AD7
79
P0_7/AN0_7
AD6
80
P0_6/AN0_6
AD5
81
P0_5/AN0_5
AD4
82
P0_4/AN0_4
AD3
83
P0_3/AN0_3
5V-1_CPU
AD2
84
P0_2/AN0_2
AD1
85
P0_1/AN0_1
R429
R430
AD0
86
1/16W
P0_0/AN0_0
R452 4.7K
NC
NC
87
P10_7/AN7
1/16W
R431
0
88
P10_6/AN6
2, 10
SC1_FN
R432
0
1/16W
89
2, 10
SC2_FN
1/16W
P10_5/AN5
4.7K
R453
90
P10_4/AN4
1/16W
4.7K
R454
91
5V-1_CPU
P10_3/AN3
1/16W
R425
100
92
2
DET_FB
P10_2/AN2
1/16W
R427
100
93
2
KEY _AD
P10_1/AN1
94
Av ss
1/16W
R800
100
95
8
CE_REMOTE
P10_0/AN0
1/16W
4.7K
96
5V-1_CPU
Vref
R801
5V-1_CPU
97
Av cc
98
P9_7/ADTRG
99
P9_6
E_PAGE
100
P9_5
5V-1_CPU
R807
R808
R809
R810
4.7K
1/16W
4.7K
1/16W
1/16W
100
R433
2
ISP_SW
1/16W
R435
100
2
SVIDEO_SW
1/16W
R436
100
11
AUDIO_SW1
100
1/16W
R437
11
AUDIO_SW2
5V-1_CPU
1/16W
R443
220
HZ4A2
C334
ZD401
Q403
R444
100uF/16V
1/16W
8.2K
PMBS3906
1/16W
R445
1K
C355
1000pF
C330
10uF/16V
5V-1_CPU
TP43
TP32
TP33
TP34
TP35
TP36
TP37
TP38
A0
A1
A2
A3
A4
A5
A6
A7
A[0..7]
1/16W
4.7K
1/16W
R826
R827
R828
1/16W
4.7K
1/16W
100
1/16W N C
100
100
1/16W N C
1/16W
100
5V-1_CPU
1/16W
M30620SPGP
U402
R552
1/16W
4.7K
X402
R439
5V-1_CPU
4.7K
1/16W
10MHz
C336
C335
15pF
15pF
5V-1_CPU
4.7K
CPU_RST
5V_SB
5V-1_CPU
FB57
150 OHM
C346
C347
0.1uF
10uF/16V
A[8..14]
14
MCU_A[0..7]
3,14
A8
U403
A9
A0
RN29
4
5
33
12
A0
A10
A1
3
6
11
A1
A2
2
7
10
A2
A11
A3
1
8
9
A3
A4
RN30
4
5
33
8
A4
A12
A5
3
6
7
A5
A6
2
7
6
A6
A13
A7
1
8
5
A7
A8
RN31
4
5
33
27
A8
A14
A9
3
6
26
A9
A10
2
7
23
RN32
A10
A15
A11
1
8
25
A11
A12
1
8
33
4
A12
A13
A16
2
7
28
A13
A14
3
6
29
A14
A17
A15
4
5
3
A15
1/16W
A16
R550
33
2
1/16W
A16
A17
R551
33
30
A17
A18
31
A18
R399
NC
W27E040 USED
EN29F040A-70JCP
W27E040
A[8..18]
50
A18
P4_2/A18
R397
49
P4_3/A19
48
R394
0
1/16W
P4_4/CS0
1/16W
47
R393
22
CS1
P4_5/CS1
TP39
1/16W
46
R412
22
P4_6/CS2
CS
3
1/16W
45
R392
4.7K
P4_7/CS3
44
P5_0/WR
43
TP41
P5_1/BHE
42
RD
P5_2/RD
R390
22
1/16W
41
P5_3/BCLK
40
P5_4/HLDA
39
P5_5/HOLD
TP42
1/16W
38
R418
22
ALE
P5_6/ALE
ALE_EMU
3
37
1/16W
R419
4.7K
P5_7/RDY
36
RST_HDMI
P6_0/CTS0/RTS0
35
RST_EX52
P6_1/CLK0
34
P6_2/SCL0
33
P6_3/SDA0
32
P6_4/CTS1/RTS1
31
P6_5/CLK1
30
RX
P6_6/RXD1
29
TX
P6_7/TXD1
28
SDAE
P7_0/SDA2
27
SCLE
P7_1/SCL2
RX
26
INV_PRO
2
P7_2/TA1out
5V-1_CPU
TX
2
2
R840
R860
R861
R536
1/16W
4.7K
1/16W
4.7K
100
1/16W
4.7K
1/16W
R841
W_ENABLE
2
R842
SRS_CTL
11
100
1/16W
R382
R862
PANPWR_ON 12
1/16W
100
Option
1/16W
R440
100
MUTE
11
REMOTE
1/16W
R817
100
INT#
3
C414
1/16W
R816
100
INT_A
10
100pF
R811
R812
R814
1/16W
1/16W
1/16W
4.7K
4.7K
C329 1000pF
5V-1_CPU
U406
4
GND
3
NC2
2
NC1
1
NC0
24LC64
48
AD[0..7]
3,14
When use W27E040,use R398 and
R399;R400 and R404 are
Option.
When use W29C040,use R404 and
R400;R398 and R399 are
Option.
13
RN27
1
8
33
AD0
Q0
14
2
7
AD1
Q1
15
3
6
AD2
Q2
RN28
17
4
5
AD3
Q3
18
1
8
33
AD4
Q4
19
2
7
AD5
Q5
20
3
6
AD6
Q6
21
4
5
AD7
Q7
22
PS
CE#
24
OE#
5V-1_CPU
32
VCC
R398
NC
1
C340
VPP
W27E040 USED
C345
10uF/16V
16
0.01uF
GND
1/16W
R400
33
WR#
14
1/16W
33
14
5V-1_CPU
RD#
14
R389
0
VD3_3
1/16W
R600
22
R414
RD_EMU
3
10K
1/16W
5V-1_CPU
R415 100
1/16W
RST_H
3
1/16W
R417
47K
Q402
1
NC
R422
R423
1/16W
1/16W
4.7K
4.7K
1/16W
R426
100
SC1
2,8
SD1
2,8
1/16W
R428
100
C338
C339
100pF
100pF
RST_7117
10
RST_7117
NC
2
5V-1_CPU
R447
R448
R449
10K
1/16W
R450 100
1/16W
SCLE
100K
SDAE
1/16W
R451 100
3
RST_H
E_PAGE
8
VCC
7
A O C ( T op V i ct ory) E l ect ro ni cs C o . , Lt d.
VCLK
6
SCL
5
SDA
Title
Size
Document Number
Custom
Date:
Tuesday , May 30, 2006
AOC L20W451T
1/16W
WR_EMU
3
TP40
WR
5V-1_CPU
3.3V_SB
R282
R283
1/16W
1/16W
4.7K
4.7K
RST_HDMI
RST#
8
5V-1_CPU
R284
Q404
1
PMBS3904
1/16W
2K
R281
1/16W
4.7K
VD3_3
VD3_3
U410
R411
1/16W
1
GND
3
VCC
2
RESET
C415
ASM810SEUR-T
0.1uF
MCU_M30620SPGP
Rev
1
715T1539-1-2
Sheet
7
of
14

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