(FP_EN)
(UNBAL_EN)
(OPTO_EN)
(LOOPBK_EN)
G4
10
C56
0.1UF
R186
681
R185
24.9
C57
0.1UF
3
2
6
1
7
5
8
4
U76
EL2120
R188
200.0
TP5
+12V
-12V
A
A
A
A
A
R187
1.1K
B2
2
UNBAL_IN
H2
5
LOOPBK
C47
0.1UF
C248
10UF
R173
10.0
R170
511
+5VA
A
A
A
A
1
2 3
16
15 14
9
10 11
8
7 6
13 12
5 4
U109
DG444
R269
2.21K
TP4
C21
0.1UF
3
2
6
1
7
5
8
4
U75
EL2120
2
3
16
1
14
15
13
12
4
U110A
AD602
R198
24.9
C160
1UF
C64
0.1UF
+12V
A
A
C162
0.1UF
A
3
2
6
1
7
5
8
4
U111
EL2120
R267
511
C48
0.1UF
TP3
R266
332
+12V
A
to auto EQ
B2
12
EQ_IN
to eye sampler
F2
11
EYE_SOURCE
C53
0.1UF
R183
750.0
R182
133
R174
22.1
+12V
-12V
A
A
A
ACROSS
R182
C163
0.1UF
C164
0.1UF
C161
0.1UF
C271
82PF
A
A
A
+5VA
-5V
R197
750.0
R257
15.0K
C165
0.1UF
R268
2.21K
A
-12V
A
A
A
A
+12V
-12V
+5VA
A
2
3
6
51
8
7
4
U74
LT1194
R175
24.9
C49
0.1UF
C247
10UF
R181
10.0
R176
511
-5V
A
A
A
R177
6.98K
R178
6.98K
C50
0.1UF
C51
0.1UF
R179
46.4
C62
0.1UF
R193
511
H3
H3
5
XLR_IN+
XLR_IN-
B2
2
OPTO_IN
R273
100.0
A
TP1
F2
8
GAIN
C61
0.1UF
2
3
1
8
4
U112A
TL072
C63
0.1UF
B2
12
R260
1.00M
+12V
-12V
-12V
A
A
A
C158
0.1UF
CR23
R258
2.21K
CR22
R259
221K
A
5
6
7
U112B
TL072
A
R446
2.21K
G4
8
AGC
AM 700
PART OF A3 DIGITAL AUDIO BOARD
6INPUT
INPUT SELECTOR
VARIABLE GAIN AMPLIFIER
AGC
FROM
SERIAL CONTROL
REGISTER