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41
ViewSonic Corporation
Confidential - Do Not Copy
VA1703w-1_VA1703wb-1
Model
Title
Date
Rev:
ViewSonic Corporation
POWER
SOT-223
Recommond to used "Blue" parts circuit
for VCC1.8V if you want to suppoert DDC
function when system power off
C22 can delete
BL_ADJ
GND
GND
12V
BL_ON
5V
5V
12V
VCC3.3
VCC1.8
+5V
VCC3.3
+5V
+5V
+12V
VCC3.3
+12V
+5V
+5V
+5V
+5V
DVI5V
PC5V
VCC3.3
VLCD
VCC1.8
+5V
+5V
VLCD
VCC3.3
VCC3.3
VCC3.3 +5V
VCC3.3 +5V
C13
0.1u
R25
10K/NC
R26
10K
C24
100nF
R34
NC
R18
10K
C23
100nF
R24
NC/56
Q5
NC/CHT2907
C
B
E
U3
AIC1084PM-3V3
2
3
1
4
VOUT
VIN
VSS
TAB
C14
0.1u
+
C27
NC/1uF/16V
D3
NC/1N4148
Q2
MMBT3904
C
B
E
+
C26
10uF/16V
C17
1uF
Q6
MMBT3904
C
B
E
H1
TP
1
2
3
4
5
6
7
8
9
1
2
34
56
7
8
9
R37
NC/100
R21
4K7
H3
TP
1
2
3
4
5
6
7
8
9
1
2
34
56
7
8
9
C28
0.1uF
R14
NC/0
R30
10K
R17
1K
FB5
600 OHM
R20
NC/0
R35
4K7
R32
NC
C20
0.1uF
R27
10K
R13
10K
Q4
AO3401
+
C18
100uF/16V
U2
AIC1117PY-1V8
3
2
1
4
VI
VO
GND
VO
R15
10K
D4
NC/1N4148
R31
0
R33
NC/2K
Q3
MMBT3904
C
B
E
R36
10K
R29
10K/NC
R28
10K/NC
R19
4K7
H2
TP
1
2
3
4
5
6
7
8
9
1
2
3
4
56
7
8
9
C19
0.1uF
Q7
MMBT3904
C
B
E
+
C25
NC/4.7uF/16V
R16
4K7
FB6
600 OHM
+
C22
100uF/16V
+
C21
100uF/16V
CN2
Power
1
2
3
4
5
6
7
8
VCTRL
5
Adj_BACKLIGHT
5
on_BACKLIGHT
5
+5V
2,4,5
DVI5V
4
PC5V
4
VCC3.3
4,5
VLCD
6
VCC1.8
5
+12V
2
on_Panel