Service manual

ViewSonic Corporation Confidential - Do Not Copy
55
Model
Title
Date Rev:
ViewSonic Corporation
Panel interface
VA702-3_VA702b-3
1
D
E
2
1
S
1
3
2
3
B
G
C
C
E
2
B
2
G
3
3
D
S
1
LCD
LCDVCC
FCLKN
BCLKP
LCDVCC
LCDVDD
LVB2P
POL
BR0P
LVACKP
LVB2M
FG0P
FB0P
LCDVDD
FB1P
LCDVCC
FB0N
BCLKN
FCLKP
BR1P
BR0N
GND
LVACKM
GND
FG0N
LCDVCC
LCDVCC
FB2P
FB1N
FB2N
BR1N
GND
GND
GND
FB2N4
VDDCTRL_1 5
FG0N4
YCLK4
BR1P4
FB1N4
BCLKP4
BG2N4
BB0N4
BB1N4
BB2N4
YOE4
FR0P4
FR2P4
FR0N4
FXDIO4
BR2P4
FR1N4
VDDCTRL_2 5
BG1N4
FB0N4
FG2N4
FG1P4
FCLKP4
FG0P4
BR0P4
BG0N4
FB1P4
BXDIO4
FB2P4
POL4
BCLKN4
BG1P4
BG2P4
BB0P4
BB1P4
BB2P4
YDIO4
XSTB4
BR0N4
BR1N4
FB0P4
BR2N4
FCLKN4
FG2P4
FR2N4
FR1P4
BG0P4
FG1N4
LVB2M4
LVACKP 4
LVB2P 4
LVACKM4
VCC12
VDD3V3
GNDGND GNDGND GND GND
LCDVCC5GND
GND
LCDVCC
LCDVDD
GND
LCDVCC
GND
GND
VCC12
LCDVCC5
R82
1.2K/F/6/NC
R76
10K/6/NC
R85 3.6K/F/6
C89
0.1U/6
12
C78
0.1U/6
12
Q9
DTC144EUA
2
31
C80
0.1U/6/NC
12
C87
470P/6
12
1
H1
MTH276D126
2
3
4
5 6
7
8
9
C81
0.1U/6/NC
12
C74
0.1U/6/NC
12
L26 0/8/NC
R83
0/1206
C76
2200P/6
12
R87
33K/6
C73
2200P/6/NC
1 2
1
1
C77
2200P/6
1 2
R75
10K/6
Q8
DTC144EUA/NC
2
31
U7
MC34063/NC
1
2
3
45
6
7
8
SWITCH
EMITTER
TIMING
GNDCII
VCC
SENSE
DRIVE
CN7
AF750B-A2G1T/NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
R74
82K/6
C72
2200P/6/NC
12
L30 0/8/NC
R73
10K/6/NC
Q7 SI2301DS
3
2
1
1
H2
MTH276D126
2
3
4
5 6
7
8
9
L27 0/8/NC
D29 EC10QS04
21
1
H3
MTH276D126
2
3
4
5 6
7
8
9
C88
0.01U/6
12
C79
330U/16V
Q6 SI2301DS
3
2
1
L29 0/8/NC
CN9
1841 30P
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
1
3
5
7
9
11
13
15
17
19
21
23
25
27
29
2
4
6
8
10
12
14
16
18
20
22
24
26
28
30
CN8
AF730B-A2G1T/NC
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
C86
1U/8
12
R77
82K/6
R72
82K/6/NC
R103
0/8/NC
R104
0/8
R81
3.6K/F/6/NC
1
1
C75
330U/16V/NC
R86
1.2K/F/6
C90
330U/16V
L32
47UH
1 2
1
H4
MTH276D126
2
3
4
5 6
7
8
9
L28 0/8/NC