ViewSonic VA1703w-1 Service Manual page 44

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