Vitek VT-4002 Circuit diagrams
5
D D
4
3
2
1
MIC
1
2
3
R72
APWM_L-
APWM_L+
C C
APWM_R-
APWM_R+
B B
4.75K 1%
R79
4.75K 1%
R92
4.75K 1%
R100
4.75K 1%
+12VA
R108 33R
+
EC19
47uF/25V
R60 1K
GND
+12V
R73
4.75K 1%
C62
200pF 10%
R80
4.75K 1%
R93
4.75K 1%
C68
200pF 10%
R101
4.75K 1%
+12V -12V
C8 105
R74
MLIN
4.75K 1%
C63
180pF 10%
R81
4.75K 1%
C64
33pF 5%
R94
4.75K 1%
C69
180pF 10%
R102
4.75K 1%
C70
33pF 5%
-12VA
MUTE_CTL
MUTE_CTL
AMUTE or MUTE_CTL:
Hi: Mute.
MIC
MIC
R82
39K
R109 33R
EC20
+
47uF/25V
1 2
D6 LL4148
C48 100pF
R75 8.2K
C61 33pF 5%
U6A
LM4558
-
2
1
+
3
+12VA
8 4
C65
0.1uF
R95 8.2K
C67 33pF 5%
U6B
-
LM4558
6
7
+
5
R76 4.7K
Q6
8050
2 3
+12V D5V
D8
LL4148
1 2
8 4
R77 3.3K
+
EC16
10uF/16V
D7 LL4148
1 2
R87 100K
R90 10K
R97
47K
39K
R103
1
MIC
EC17
220uF/10V
MIC
2 3
1
Q9 8550
2 3
1
R5
R98
2K
-12VA
C66
0.1uF
Q8
8550
EC18
47uF/25V
R59
10K
[0R]
10K
R26
10K
[0R]
AUDIO_MIX_L
R1
10K
-12V
R88
100K
R96
100K
R29 20K
[0R]
U7B
LM4558
-
6
7
+
5
8 4
C101 100pF
R53 20K
[0R]
U7A
-
LM4558
2
+
3
8 4
C102
0.1uF
MUTE
-12V
C100
0.1uF
C103
R78 100R
1uF
C104
1
1uF
+12V
MUTE
R99 100R
LMAIN-OUT
R86
2K
R107
MUTE
2K
LMAIN-OUT
Q7
1
8050
2 3
RMAIN-OUT
RMAIN-OUT
Q10
1
8050
2 3
A A
Title
Size Document Number Rev
Custom
Back End
5
4
3
2
Date: Sheet
Grand_V962
of
1
45Thursday, August 03, 2006
2.0
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