Alto OEX-400, Service Manual

Page: 8 / 37

1 2 3 4 5 6 7 8
A
B
C
D
8 7 6 5 4 3 2 1
D
C
B
A
EQ HI
10KHZ
LO
C35
47u/25V
3
2
1
U9A
4580M
R127
1M
C106
22P
R14
3K9
R113
8K2
R112
8K2
C90
4N7(M)
R114
8K2
C85
4N7(M)
C36
47u/25V
100HZ
R97
12K
C73
22P
5
6
7
U8B
4580M
C34
47u/25V
R31
22K
5
6
7
U9B
4580M
R135
36K
C107
22P
C39
47u/25V
R32
22K
R115
8K2
C37
47u/25V
R13
3K9
J4
PRE/POST
R63
10K
1 3
2
VR13
B50K
1 3
2
VR14
B50K
1
3
2
VR15
W50K
R62
10K
1
3
2
VR16
W50K
R98
20K
FX-SEND
EQ HI
10KHZ
LO
C46
47u/25V
3
2
1
U11A
4580M
R128
1M
C111
22P
R18
3K9
R118
8K2
R117
8K2
C91
4N7(M)
R119
8K2
C86
4N7(M)
C47
47u/25V
100HZ
R164
12K
C74
22P
3
2
1
U10A
4580M
C45
47u/25V
R33
22K
5
6
7
U11B
4580M
R136
36K
C108
22P
C48
47u/25V
R34
22K
R116
8K2
C38
47u/25V
R17
3K9
J5
PRE/POST
R70
10K
MAIN-IN-EQ
TAPE-IN
1 3
2
VR17
B50K
1 3
2
VR18
B50K
1
3
2
VR19
W50K
R69
10K
1
3
2
VR20
W50K
R99
20K
FX-SEND
8
4
U7C
4580M
8
4
U8C
4580M
8
4
U9C
4580M
8
4
U10C
4580M
C132
0.1u
C133
0.1u C135
0.1u
C134
0.1u C136
0.1u C138
0.1u
C137
0.1u C139
0.1u
+VCC4
-VCC4
8
4
U13C
4580M
C144
0.1u
C145
0.1u
+VCC5
-VCC5
8
4
U11C
4580M
C140
0.1u
C141
0.1u
R144
10
R145
10
R146
10
R147
10
+VCC
-VCC
+VCC
-VCC
3
2
1
U12A
4580M
R161
62K
C109
22P
C40
47u/25V
R71
10K
5
6
7
U14B
4580M
R36
22K
C110
22P
EFFECT-IN
5
6
7
U12B
4580M
R72
10K
C113
22P
C49
47u/25V
MAIN-BUS
MAIN-BUS
3
2
1
U13A
4580M
R165
2K2
C112
22P
DSP-IN
8
4
U12C
4580M
C142
0.1u
C143
0.1u
R65
18K
R64
10K
C41
47u/25V
4
5
2
3
1
X13
SCJ-0658-1-Y
4
5
2
3
1
X14
SCJ-0658-1-Y
S
T
R
1
2
3
4
J12
CON4
C95
4.7u/50V
C96
4.7u/50V
4
5
2
3
1
X15
SCJ-0658-1-Y
C194
100P C195
100P
X12
UNBAL-4P
LCH IN
RCH IN
C53
47u/25V
R74
22K
C54
47u/25V
R75
22K
TAPE IN TAPE OUT
R170
2.2K
R171
2.2K
TAPE IN
TAPE OUT
CH4/5-IN
TAPE-IN
TAPE-OUT
R35
22K
R168
10k
R73
10K
C196
1N5
5
6
7
U13B
4580M
R162
10K
C114
22P
1
2
3
X9
XLR-M
4
5
2
3
1
X10
SCJ-0658-1-Y
4
5
2
3
1
X11
SCJ-0658-1-Y
S
T
R
C43
47u/25V
R15
3K9
C42
47u/25V
R16
3K9
C44
47u/25V
R37
22K
C50
47u/25V
R38
22K
C52
47u/25V
R39
22K
C51
47u/25V
R40
22K
1
2
3
4
5
6
7
8
9
10
11
12
J11
CON12
1
2
3
4
5
6
7
8
9
10
11
12
J10
CON12
R67
10K
C78
22P
R66
10K
C75
22P
3
2
1
U8A
4580M
R78
10K
C79
22P
R76
10K
C76
22P
3
2
1
U7A
4580M
R81
10K
C80
22P
R77
10K
C77
22P
5
6
7
U7B
4580M
R68
10K
R80
20K
R79
20K
C97
47u/25V
C99
47u/25V
C98
47u/25V
CH4/5-IN
OUT1
OUT2
AMP MO OUT----NC
3
2
1
U14A
4580M
+VCC1
-VCC1
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