Akai ADA2, Service Manual, Page: 39 / 95

1 1
2 2
3 3
4 4
5 5
6 6
D
D
C
C
B
B
A
A
2
200
Scenic
View
Dr.
Cumberland,
RI
02864
6
2018/9/13
Sheet:
of
INPUT1-20180830.SchDoc ADA2_RP.PrjPcb
Originally
Drawn
By:
Project: Sheet: Variant:
V
ariant
name
not
interpreted
Last
Modified
By:
Last
Modified:
Copyright
2017,
inMusic
Brands
All
Rights
Reserved
CHGND
R36
100
#NAME? C60
#NAME? C61
S1
S2
S3
S4 R38
100
1
3
2
D6 BAV99
#N AME? C62
#N AME? C63
R50 10.0M
R51 10.0M
R34 6.81K
R35 6.81K
+48V
R45
10.0
R47
10.0
1
3
2
D7 BAV99
1
3
2
D8 BAV99
1
3
2
D9 BAV99
+VA
-VA
IN1_
T
R
S
+
IN1_
T
R
S
-
IN1_
T
R
S
_
D
E
T
IN1_
X
L
R
+
IN1_
X
L
R-
IN1_
X
L
R_D
E
T
IN1_
T
R
S
+
2 3
1
U8A
NJM4580M
6 5
7
U8B
NJM45
80M
R57
1.00K
R61
1.00K
1,000pF #NAME?
C67
1,000pF #NAME?
C69
R58 1.00K R62 1.00K
1
2 3
Q5
MMBT440 3
1
2 3
Q6
MMBT440 3
1
2 3
Q3 MMBT4403
1
2 3
Q4
MMB T44 03
R53 4.02K
R54 4.02K
R48
1.00K
R49
1.00K
2 3
1
U7A
NJM4580M
+
47uF #NAME?
C54
+
47uF #NAME?
C56
18pF #NAME?
C57
18pF #NAME?
C64
332 R56
0.1uF #NAME?
C66
-VA
6 5
7
U7B
NJM4580M
47pF #NAME?
C53
R37
7.50K
R41
7.50K
R44
3.32K
R46
7.50K
R43
7.50K
IN1_
X
L
R
+
470pF #NAME?
C58
+VA
0.1uF #NAME?
C51
R39 13.0 K
R40 13.0 K
+VA
0.1uF #NAME?
C52
-VA
+
3,300uF #NAME?
C55
1
3
2
C
W
MN
T
VR1A
10KC/5KB
IN1_
X
L
R-
+
47uF
#NAME?
C59
IN1_
X
L
R_T
O
_
M
IX
6 5
7
U9B
NJM4580M
R59
47.5K
R60
47.5K
SW1 DPDT
IN1_
T
R
S
-
R72
1.00M
2 3
1
U10A
NJM4580M
L
INE/INST
S
W
ITCH
1,000pF #NAME?
C75
4
6
5
C
W
VR1B
10KC/5KB
R64
4.02K
158
R63
+
220uF #NAME?
C72
+
22uF #NAME?
C74
619 R68
R71
1.21K
220pF #NAME?
C70
-6
to
+24dB
+3
.5
d
B
to
+61dB
6 5
7
U10B
NJM4580M 100pF #NAME?
C73
R67
2.00K
R70
1.50K
R66
1.50K
R69
499
3
1
2
Q7 2SD2704K
3
1
2
Q8 2SD2704K
R65
499
IN1_
X
L
R_T
O
_
M
IX
IN1_
M
U
T
E
_
T
R
S
IN1_
M
U
T
E
_
X
L
R
1
2 3
Q10 MMBT4403
IN1_
T
O
_
A
D
C
R80 1.50K R82 22.1K
IN1_
M
U
T
E
_
T
R
S
R78
150K
R75
150K
-VA
+VA
IN1_
T
R
S
_
D
E
T
1
2 3
Q9 MMBT4403
R79 1.50K R81 22.1K
IN1_
M
U
T
E
_
X
L
R
R77
150K
R74
150K
-VA
+VA
IN1_
X
L
R_D
E
T
D10 MMBD4148
nP
H
A
NTOM_M
UTE
+4
d
B
0.1uF
#NAME?
C76 0.1uF
#NAME?
C81
0.1uF
#NAME?
C77 0.1uF
#NAME?
C82
0.1uF
#NAME?
C78 0.1uF
#NAME?
C83
0.1uF
#NAME?
C79 0.1uF
#NAME?
C84
0.1uF
#NAME?
C80 0.1uF
#NAME?
C85
+VA
-VA
-
4
+
8
U7C
NJM4580M
-
4
+
8
U8C
NJM4580M
-
4
+
8
U9C
NJM4580M
-
4
+
8
U10C
NJM4580M
R73
750
R76
1.27K
R42
4.99
R52 1.21K
R55 1.21K
3.3uF #NAME?
C68
3.3uF #NAME?
C71
2 3
6
1
5
O
F
F
SET
U11A TL071
V-
4
V+
7
U11B
TL071
1 2 3
+
-
G
5 9 6 10 7 11
T
R
S
8 4
J4 COMBO-XLR-TRS
2 3
1
U9A
NJ
M4580M
100pF #NAME?
C65
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
0.0
R22
Place
R22
between
J4
pins
4
&
7.