Schematic Diagrams - ViewSonic VG1930wm-3 Service Manual

8. Schematic Diagrams

CN2
SCJ-0356M5(B)
1
2
3
4
5
U_GND
Vau
R11 4.7K
R14
10K---4.7K
R17
7 AUDIO_MUTE
ViewSonic Corporation
CN13
3
2
1
PITCH 2.0 180度
CN14
1
2
3
PITCH 2.0 180度
U_GND
+5V
去掉得元件06/08/17
+5V 4,6,7
R7
22K
Shutdown
R9
1 Q2
NC -> 1K
MMBT3904L
U_GND
U_GND
Shutdown
TC2
Vau
+
+5V
10uF/16V RA1 RA3
0R/NC
R15 U_GND
0R
RA2
10K---22K
0R Q3
AO3401
4.7K--10K
Q4
1
MMBT3904L
C5
TC3
+
10uF/16V
0.1uF
U_GND
U_GND
73
Confidential - Do Not Copy
U_GND
+5Vau
+5Vau
+12V 6
TC23
+
220uF/16V/NC
120 OHM BEAD
U11
Connect the net +5Vau & +5V
UTC7805/NC
L1
VOR 1uF
RIGHTIN C2
1 2
BW FCM1608K-300T07
L2
LEFTIN VOL C4 1uF
1 2
BW FCM1608K-300T07
+5V
R8
10K
R10
7 Volume
+5Vau
120 OHM BEAD
R18
10K
U_GND
VG1930wm-3
+5V
FB10
Vau
C1
0.1uF
U_GND
R1
4
Vol
20K -> 33K
-OUT1
R2 20K
5
Vin1 +OUT1
2.2uF/16V PT2300
TC33
13
U_GND
By pass
SE/BTL
R4 20K
6
Vin2
+OUT2
R5
7
VO2
20K -> 33K
-OUT2
Shutdown
1
Shutdown
8
GND
+5V
U_GND
R6
C3
4.7K
R126 300K
Add the capacitor for balance the Vau & DC Vol
C71
Q1
4.7K
1
MMBT3904L 0.1uF
R12 U_GND
2K
R13
330
U_GND
120 OHM BEAD
FB11 FB1
U_GND U_GND
L0603 --> L0805
U2
CN1
14
2
16
1
Rout
10K -> 100K
R3
12
U_GND
CN5
9
1
11
2
Lout
Vau
0.1uF
ViewSonic Corporation
Model
AUDIO
Title
Date Rev: