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8
.
9
.
INVERTER
VIN : 13V+/-10%
PWM : 0V---3.3V, 100%---40% PWM pulse. 100% maximum brightness; 40% minimum brightness
ON: 0V---1.0V / OFF: 2.0V---5.0V
NPO
1206
1206
1808
1808
1808
1808
1808
1808
1808
1808
1808
1808
1808
1808
1206
1206
<1.5V PWM or Burst mode
R945/19.6K R902/NC R903/17.8K R906/270K PWM
R946/30.1K R902/110K R903/10.7K R906/NC Burst mode
VIN
5.0V
5.0V
PAGE 1 DIM
PAGE 1 ON / OFF
PAGE 1 12V
R905
3.3M
C902
103P
1
2
R950
47K
R926
39K
C917
0.1uF
1
2
R942
0R
R934
10K
+
C944
470uF/25V
R945
19.6K F
D909
BAV70
C951
NC
1
2
Q909
2N3904
R916
5.1K
Q914
2N3904
R930
10k
D906
BAV99
1
3
2
C914
NC
1
2
D904
BAV99
1
3
2
Q912
2N7002
L901
DR
C911
2.2u
1
2
C935
102P NPO
1
2
C915
NC
1
2
R931
10K
Q905
2N3904
R914
5.1K
Q911
2N3904
C937
102P NPO
1
2
HV
T903
1
7
4
5
C949
103P
1
2
R946
NC
R933
10K
R935
649 F
R901
105K F
+
C901
47uF/25V
R960
0.01uF
R923
39K
R958
NC
HV
T901
1
7
4
5
P902
CON2
1
2
P901
CON5
1
2
4
5
C926
5.6P 3KV NPO
1
2
C933
102P NPO
1
2
S
G2
D
S
D
D
G1
D
Q904
AM4502
1
2
3
4
6
5
7
8
C952
NC
1
2
P903
CON5
1
2
4
5
R932
10K
R924
39K
R941
0R
C909
103P
1
2
R955
220K
HV
T906
1
7
4
5
R959
0.01uF
C919
100P 3KV
1
2
R920
5.1k
C946
103P
1
2
R921
5.1K 1/4WS
I901
OZ9910
16
1
2
3
4
13
12
11
6
5
14
7
8
10
9
15
PDRV2
NDRV2
PGND
NDRV1
GNDA
VIN
V5000
ISEN
LCT
CT
HSB
DIM
ENA
CMP_SST
VSEN
PDRV1
R913
5.1K
R912
5.1K
Q906
2N3904
C910
0.033uF
1
2
R947
0R 1/4WS
R937
649F
R911
5.1K 1206
C929
5.6P 3KV NPO
1
2
R936
649 F
R956
1K 1/4WS
F901
JP/DIP
R902
NC
D903
BAV99
1
3
2
C922
100P 3KV
1
2
C908
0.1u
1
2
+
C913
470uF
/25V
P904
CON3
1
2
C907
0.01uF
1
2
HV
T905
1
7
4
5
D905
BAV99
1
3
2
C953
NC
1
2
R908
0R 1/4WS
R944
0R
R940
649 F
R907
1M
HV
T902
1
7
4
5
R952
1K 1206
R927
39K
C918
100P 3KV
1
2
R954
NC
Q910
2N3904
S
G2
D
S
D
D
G1
D
Q901
AM4502
1
2
3
4
6
5
7
8
R917
5.1K 1/4WS
R918
5.1k
C928
5.6P 3KV NPO
1
2
D908
BAV70
D901
BAV99
1
3
2
R957
220K
C936
102P NPO
1
2
R938
649 F
HV
T904
1
7
4
5
R910
5.1K
C920
100P 3KV
1
2
C924
100P 3KV
1
2
R915
5.1K
C947
103P
C923
100P 3KV
1
2
R929
10K
S
G2
D
S
D
D
G1
D
Q902
AM4502
1
2
3
4
6
5
7
8
C934
102P NPO
1
2
C927
5.6P 3KV NPO
1
2
R906
270K
R948
100K 1/4WS
Q907
2N3904
R939
649 F
R904
1K 1/4WS
R953
NC
R943
0R
R919
5.1K 1/4WS
C950
NC
1
2
C931
5.6P 3KV NPO
1
2
C930
5.6P 3KV NPO
1
2
C948
103P
1
2
D907
BAV70
C912
103P
1
2
C916
0.1uF
1
2
C905
NC
2
1
R903
17.8K F
Q913
NC
C903
1uF
1
2
R922
5.1K
R928
39K
D902
BAV99
1
3
2
S
G2
D
S
D
D
G1
D
Q903
AM4502
1
2
3
4
6
5
7
8
Q908
2N7002
+
C945
470uF/25V
R949
NC
C904
180P
2
1
C932
102P NPO
1
2
R909
5.1K
R925
39K
C906
4700P
1
2
48
ViewSonic Corporation
Confidential - Do Not Copy
VG2030wm-1
Model
Title
Date
Rev:
ViewSonic Corporation
INVERTER
Summary of Contents for VG2030wm-1
Page 39: ...36 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1 6 Troubleshooting Flow Chart...
Page 40: ...6 1 NO POWER 6 2 MCU NO FUNCTION 37 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Page 41: ...6 3 NO DISPLAY 38 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Page 42: ...39 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1 7 Block Diagram...
Page 54: ...9 2 MAIN PCB BOTTOM VIEW 51 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Page 55: ...9 3 CON PCB TOP VIEW 52 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Page 56: ...9 4 CON PCB BOTTOM VIEW 53 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Page 57: ...9 5 IR PCB TOP VIEW 54 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Page 58: ...9 6 IR PCB BOTTOM VIEW 55 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Page 59: ...9 7 POWER PCB TOP VIEW 56 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Page 60: ...9 8 POWER PCB BOTTOM VIEW 57 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...
Page 62: ...59 ViewSonic Corporation Confidential Do Not Copy VG2030wm 1...