![background image](http://html1.mh-extra.com/html/viewsonic/va712-2/va712-2_service-manual_1020961064.webp)
+3.3V
Q702
PMBS3904
C
E
B
Q703
NC
C705
0.1uF
C709
0.1uF
C710
0.1uF
C707
0.1uF
C711
0.1uF
R710
4.7K 1/16W
\
1.8DVCC
ADC_1.8AVCC
RTD_1.8DVCC
C718
0.1uF
C716
0.1uF
C717
0.1uF
TO-263
+
C720
10uF/16V
D702
GS1D
2
4
6
8
10
12
1
3
5
7
9
11
CN701
CONN
FB702
600 OHM
VIN
3
ADJ
1
VOUT
2
U701
AIC1084-33PM
U703
AO3401L
+5V
Q701
PMBS3904
BL_ON_OFF
C715
0.1uF
R718
0 1/16W
\
+3.3V
DGND
R724
10K 1/16W
\
+3.3V
FB703
600 OHM
R721
51K
1/16W
\
D701
SMAL140
PANEL_POWER
BL_ADJ
2
4
6
8
10
12
14
1
3
5
7
9
11
13
CN702
+
C703
100uF/25V
FB701
600 OHM
C714
1uF/16V
+
C706
100uF/25V
delete
R715,R720,C712
VCC+5V
BL_ON_OFF
VIN
3
GND
1
VOUT
2
U702 NC / AP1117 1.8V
OUT_R+
OUT_L+
OUT_L-
OUT_R-
R722 4.7K 1/16W
\
R706 10K 1/16W
\
R707 10K 1/16W
\
Q704
PMBS3904
DEL
R702,R703
STDBY
MUTE
R723
10K 1/16W
\
+5V
R709
220 1/16W
\
BRIGHTNESS
BACKLIGHT
R705
10K 1/16W
\
R708
NC / 1K 1/16W
\
R701
10K 1/16W
\
C708
1uF/16V
R704
1K 1/16W
\
+5V
PANEL_PW
+12V
+5V
+12V
+3.3V
+
C719
100uF/25V
C704
0.1uF
R716
10K 1/16W
\
VCC+5V
2N3906
R717
NC
0805
E
VOL_ADJ
OUT_R+
OUT_R-
2N3904
C
+5V
OUT_L+
OUT_L-
+5VA
+12VA
0805
B
R712
10K 1/16W
\
R714
NC
R711
NC
VOLUME
+5V
+
C702
470uF/16V
+5V
+12V
BL_ADJ
+
C701
100uF/25V
3.3V_Vd
VCC+5V
R713
0 1/16W
\
VOL_ADJ
+
C713
100uF/25V
10. Schematic Diagrams
ViewSonic Corporation
Confidential - Do Not Copy
VA712-2_ VA712b-2
61
Model
Title
Date
Rev:
ViewSonic Corporation
POWER
Summary of Contents for VA712-2
Page 28: ...ViewSonic Corporation Confidential Do Not Copy VA712 2_ VA712b 2 25...
Page 44: ...ViewSonic Corporation Confidential Do Not Copy VA712 2_ VA712b 2 41...
Page 63: ...ViewSonic Corporation Confidential Do Not Copy VA712 2_ VA712b 2 60 9 Block Diagram...
Page 74: ...ViewSonic Corporation Confidential Do Not Copy VA712 2_ VA712b 2 71 11 5 POWER PCB TOP VIEW...
Page 75: ...ViewSonic Corporation Confidential Do Not Copy VA712 2_ VA712b 2 72 11 6 POWER PCB BUTTON VIEW...