Roland AT-80SL - Page 113

128
Jun. 2005
CIRCUIT DIAGRAM (VCA)
fig.vca-c
To
MAIN
BOARD
MIC OUT L
MIC OUT R
AGND
MAIN OUT L
AGND
MAIN OUT R
SUB OUT R
SUB OUT L
AGND
MUTE
MAIN L
MAIN R
AGND
SUB L
SUB R
AGND
IN L
IN R
AGND
To JACK
BOARD
AGND
IN L
IN R
To JACK
BOARD
VCA
VCA REF
VCA REF
To
MAIN
BOARD
To MAIN
BOARD
AGND
EFFECT L
EFFECT R
2-1
2
+
1
A
A
A
A
A
A
REF
A
A
REF
A
A
2-1
2
+
1
A
A
2-1
2
+
1
A
A
REF
2
+
1
2-1
2-1
2
+
1
A
A
A
A
A
2-1
2
+
1
A
2-1
2
+
1
A
REF
IC13
M5283P
G1
G2
NC
1
16
8
2
9
15
3
6
14
11
4 5
12 13
7
10
IC14A
UPC4570HA
+
-
3
4
2
R144
47K
R143
47K
R142
10K
R152
47K
R153
47K
IC14B
UPC4570HA
+
-
7
6
8
R151
10K
R146
47k
R141
47k
R149
1k
R150
1k
R162
10K
R160
1k
R157
47K
R163
47K
R161
1k
R159
47k
R156
10K
R155
47k
IC15
M5283P
G1
G2
NC
1
16
8
2
9
15
3
6
14
11
4 5
12 13
7
10
IC16A
UPC4570HA
+
-
3
4
2
IC10B
UPC4570HA
+
-
7
6
8
R114
6.8k
R110
6.8K
R112
6.8K
C81
DD@33p
IC10A
UPC4570HA
+
-
3
4
2
R96
6.8K
R101
6.8k
R99
6.8K
C75
33p
DD@
CN18
53253-0510
1
1
2
2
3
3
4
4
5
5
C117
SME-VB@
47/50
C112
SME-VB@
47/50
C104
SME-VB@
47/50
C101
SME-VB@
47/50
IC10C
UPC4570HA
+
-
1
5 9
IC11A
M5218AL
+
-
2
3
1
IC11B
M5218AL
+
-
6
5
7
R122
27K
R125
15K
R132
15K
R128
27K
R139
1k
R145
1k
R154
1k
R158
1k
Q18
2SC2878A
3
12
Q20
2SC2878A
3
12
R148
27K
R137
27K
C121
SME-VB@
47/50
C98
SME-VB@
330/35
C111
SME-VB@
330/35
C92
SME-VB@
47/50
C93
SME-VB@
47/50
C82
SME-VB@
47/50
C76
47/50
SME-VB@
C109
SME-VB@
47/50
C99
DD@
33p
C107
DD@
33p
C120
DD@
33p
C114
DD@
33p
C83
SME-VB@
47/50
Q17
2SC2878A
3
12
R117
8.2K
R118
4.7K
R100
8.2K
R107
3.3K
C86
SME-VB@
47/50
R104
15K
Q14
2SC2878A
3
12
R119
15K
C
D
3
C79
ECQB@
150P(K)
C
D
3
C77
SME-VB@
47/50
R93
3.3K
R102
4.7K
C88
ECQB@
150P(K)
C73
SME-VB@
47/50
R103
6.8k
R98
6.8K
C72
DD@
33p
R95
6.8K
IC9A
M5218AL
+
-
2
3
1
R116
6.8k
R111
6.8K
C80
DD@33p
R109
6.8K
C87
SME-VB@
47/50
IC9C
M5218AL
+
-
84
C90
SME-VB@
47/50
IC16B
UPC4570HA
+
-
7
6
8
+
-
2
3
+
-
6
5
U
R106
6.8k
R120
6.8k
C78
47/50
SME-VB@
C85
47/50
SME-VB@
C94
SME-VB@
47/50
C96
SME-VB@
47/50
C106
0.1
R147
1k
CN25
B4B-PH-K-S
1
1
2
2
3
3
4
4
CN23
B6B-PH-K-S
1
1
2
2
3
3
4
4
5
5
6
6
IC9B
M5218AL
+
-
6
5
7
UP
C
CN20
12P-SAN
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
CN24
B12B-PH-K-S
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
CN22
53253-0610
1
1
2
2
3
3
4
4
5
5
6
6
R206
JP
R123
6.8k
R131
6.8k
C103
SME-VB@
47/50
C105
SME-VB@
47/50
C115
SME-VB@
47/50
C118
SME-VB@
47/50