Kernick Industrial Estate,
Penryn, Cornwall,
England. TR10 9LU
+44 (0)8707 556250
+44 (0)8707 556251
4
VCA CONTROL CIRCUIT
C4384
6
7
PAGE:
TITLE:
DRG No:
ISSUE:
SHEET:
OF
ISSUE BY
DATE
FILE: C4384_4 VCA CONTROL.Sch
15:57:51
6-Feb-2004
ALLEN&HEATH
Tel:
Fax:
PRINTED:
A
B
C
D
E
F
G
H
a
b
c
d
e
CHK
BY
1
3
2
VR25A
20KK
R232
100K 1%
D2
1N4148
D10
2V7
5
6
7
U20B
TLC072C
C127
330N
R187
10K 1%
V_REF +3.7V
1
3
2
VR26A
20KK
R233
100K 1%
D3
1N4148
D11
2V7
3
2
1
U21A
TLC072C
C128
330N
R188
10K 1%
V_REF +3.7V
2
1
3
SW8A
5
4
6
SW8B
LD7
RED
R234
100K 1%
D4
1N4148
D12
2V7
3
2
1
U20A
TLC072C
C129
330N
R200
10K 1%
R246
330R
V_REF +3.7V
R17
4K7 1%
V-
4
V+
8
U22C
TL072
V-
4
V+
8
U20C
TLC072C
V-
4
V+
8
U21C
TLC072C
C61
100N
C62
100N
V_REF +3.7V
-0.16V
R235
100K 1%
D13
2V7
5
6
7
U21B
TLC072C
C130
330N
R201
10K 1%
R18
4K7 1%
2
5
3
VR24B
20KK
1
6
4
VR24A
20KK
8
9
BRKT
VR24C
1
2
3
4
CN28
CROSSFADER CONNECTOR
V_REF +3.7V
CROSSFADER_X_CNTRL
CROSSFADER_Y_CNTRL
2
1
3
SW9A
5
4
6
SW9B
LD8
RED
R244
330R
1
2
3
4
CN25
CHANNEL 2 FADER CONNECTOR
V_REF +3.7V
2
1
3
SW7A
5
4
6
SW7B
LD6
RED
R240
330R
1
2
3
4
CN24
CHANNEL 1 FADER CONNECTOR
V_REF +3.7V
CH2 FADER CNTRL
CH1 FADER CNTRL
3
2
1
U22A
TL072
3
2
1
U23A
TL072
D14
5V6
R195
10K 1%
R198
10K 1%
R197
10K 1%
R189
10K 1%
R191
10K 1%
R192
10K 1%
R190
10K 1%
5
6
7
U22B
TL072
5
6
7
U23B
TL072
D15
5V6
R196
10K 1%
R199
10K 1%
R204
10K 1%
R202
10K 1%
R194
10K 1%
R203
10K 1%
R193
10K 1%
R241
330R
R242
330R
C163
1/63
C164
1/63
VCA1_LEFT
VCA1_RIGHT
R243
330R
R245
330R
C165
1/63
C166
1/63
VCA2_LEFT
VCA2_RIGHT
CH1 FADER CNTRL
CROSSFADER_X_CNTRL
CH1 TRANSFORM
MASTER_VCA_CNTRL
CH2 FADER CNTRL
CROSSFADER_Y_CNTRL
CH2 TRANSFORM
MASTER_VCA_CNTRL
1
2
3
4
CN26
CH1 TRANSFORMER
1
2
3
4
CN27
CH2 TRANSFORMER
V_REF +3.7V
V_REF +3.7V
V-
4
V+
8
U23C
TL072
C44
47/25
C45
47/25
R58
10R PF
R59
10R PF
+V
-V
+VF
-VF
5
6
BRKT
VR25B
5
6
BRKT
VR26B
R185
10K 1%
R15
4K7 1%
U30
TL431
Q1
BC549
C43
47/25
C60
100N
R186
10K 1%
+VF
V_REF +3.7V
-0.16V
V_PAN 2V
R208
12K 1%
R16
4K7 1%
C149
100N 63V/PE
C150
100N 63V/PE
C151
100N 63V/PE
+VF
-VF
VCA_1_CNTRL
VCA_2_CNTRL
R299
NF
R300
NF
R23
2K2 1%
R24
2K2 1%
V_REF +3.7V
V_REF +3.7V
R184
1K2 1%
R301
10K
R302
10K
3
2
1
U19A
TL072
5
6
7
U19B
TL072
V-
4
V+
8
U19C
TL072
ARJ
3
5-11-01
C159
100N
C161
100N
C160
100N
C162
100N
R171
1K2 1%
R209
22K 1%
R248
4K7 1%
R247
4K7 1%
R239
330R
R238
330R
R237
330R
R236
330R
R230
10K
R231
10K
(+/- 0.02mV)
D7.1
3
ARJ
5-11-01
4
AAT
28-11-03 XXX
Summary of Contents for XONE 02
Page 1: ...SERVICE MANUAL Publication AP4501 P R O T U R N T A B L I S T D J M I X E R ...
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