Alto OEX-400, Service Manual

Page: 10 / 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
5
6
7
U23B
4580V
R218
18K
C199
220N
R225
15K
C200
220N
MN-EQ-OOL-2
MN-EQ-OOL-1
63HZ FREQUENCY BAND
MN-EQ-SOURCE
1
3
2
VR24A
W100K
R226
15K
R227
15K
R174
5K6
3
2
1
U24A
4580V
R221
18K
C201
220N
R121
8K2
C202
220N
MN-EQ-OOL-2
MN-EQ-OOL-1
160HZ FREQUENCY BAND
MN-EQ-SOURCE
1
3
2
VR25A
W100K
R122
8K2
R123
8K2
R232
1K2
5
6
7
U24B
4580V
R223
18K
C213
33N
R179
39K
C212
33N
MN-EQ-OOL-2
MN-EQ-OOL-1
400HZ FREQUENCY BAND
MN-EQ-SOURCE
1
3
2
VR26A
W100K
R180
39K
R181
39K
R234
1K8
3
2
1
U25A
4580V
R219
18K
C204
10N
R229
47K
C205
10N
MN-EQ-OOL-2
MN-EQ-OOL-1
1KHZ FREQUENCY BAND
MN-EQ-SOURCE
1
3
2
VR27A
W100K
R230
47K
R231
47K
R190
2K7
5
6
7
U25B
4580V
R222
18K
C206
10N
R47
22K
C207
10N
MN-EQ-OOL-2
MN-EQ-OOL-1
2.5KHZ FREQUENCY BAND
MN-EQ-SOURCE
1
3
2
VR28A
W100K
R48
22K
R49
22K
R233
1K
3
2
1
U26A
4580V
R224
18K
C211
1N
R203
100K
C210
1N
MN-EQ-OOL-2
MN-EQ-OOL-1
6.3KHZ FREQUENCY BAND
MN-EQ-SOURCE
1
3
2
VR29A
W100K
R204
100K
R205
100K
R235
3K3
5
6
7
U26B
4580V
R220
18K
C208
1N
R208
27K
C209
1N
MN-EQ-OOL-2
MN-EQ-OOL-1
16KHZ FREQUENCY BAND
MN-EQ-SOURCE
1
3
2
VR30A
W100K
R209
27K
R210
27K
R166
2K2
8
4
U23C
4580V
8
4
U24C
4580V
8
4
U25C
4580V
8
4
U26C
4580V
C176
0.1u
C180
0.1u C181
0.1u
C177
0.1u C178
0.1u C179
0.1u
C182
0.1u C183
0.1u
+VCC8
-VCC8
R152
10
R153
10
+VCC
-VCC
4
6
5
VR24B
W100K
4
6
5
VR25B
W100K
4
6
5
VR26B
W100K
4
6
5
VR29B
W100K
4
6
5
VR28B
W100K
4
6
5
VR27B
W100K
4
6
5
VR30B
W100K
R263
0R 1/4W
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