FMR
Schematics
Klark Teknik Building
Walter Nash Road
Kidderminster
Worcestershire
DY11 7HJ
Tel: +44 (0) 1562 741515
Fax: +44 (0) 1562 745371
Email: info@uk.telex.com
Website: www.ddaconsoles.com
FMR Schematics
Telex Communications (UK) Limited
In line with the company’s policy of continual improvement, specifications and function maybe subject
to change without notice. This Operator Manual was correct at the time of writing. E&OE.
Date: July 11, 1994 Sheet 1 of 1
Size Document Number REV
D CD1209-1 A
Title
FORUM STANDARD INPUT
TEL:(0)81-570-7161 FAX:(0)81-577-3677
DDA LTD., HOUNSLOW, MIDDX., TW3 2EB, ENGLAND
EQ
R35
47K
R36
75R
C17
33P
R33
1K2
C20
100/16
SW4
SW SPDT
R28
10K
R29
10K
R34
47K
C15
15N
C18
470N
R32
1K2
12
13
14
IC2D
TL074
4
5
6
VR6B
100KC
1
2
3
VR6A
100KC
10
9
8
IC2C
TL074
VR7
10KA
C19
470N
C16
33P
R20
1K5
R21
1K5
R22
47K
R23
47K
R24
10K
R25
10K
C10
3N3
C13
2N2
5
6
7
IC2B
TL074
VR2
10KB
3
2
1
4
1
1
IC2A
TL074
1
2
3
VR4A
100KC
4
5
6
VR4B
100KC
C11
33P
HIGH PASS
R16
15K
R17
30K
R19
10K
C8
100N
C9
100/16
R18
75R
5
6
7
IC3B
TL072
SW3
C7
100N
R13
10K
C5
33P
R15
10K
PHASE
C6
100/16
SW2
R102
10K
R9
1K5
R8
1K5
R14
75R
R103
220K
R12
10K
3
2
1
8
4
IC1A
TL072
1
2
3
VR1A
5K RD
C48
100/16
R7
10K
C4
10P
MIC/LINE
R4
7K5
R5
10K
R6
10K
C2
33P
C3
100/16
5
6
7
IC1B
TL072
SW1
TIP
RING
LINE
R1
15K
R2
15K
R3
7K5
C1
33P
2
1
3
4
5
JS1
1/4JACK
IN+
+48V
IN-
XLR2
R87
6K8 1%
R88
6K8 1%
R89
470
R90
1K5
C44
2.2/63
SW6
SUJ2
+48V
R92
10K
C36
47/63
D1
12V
R11
75R
LK1
V+
C39
22/25 C41
1000U
R104
22R
R10
330R
R96
10R
R97
10R
4
5
6
VR1B
5K RD
3
2
1
8
4
IC3A
TL072
R146
100K
R145
100K
R112
150K
R26
3K3
R27
3K3
C12
4N7
R149
100K
R148
100K
R147
100K
V+
R107
100K
D9
18V
Q5
BC550
R30
3K3
R31
3K3
C14
33N
-13
TO SOLO LED
VR3
10KB
VR5
10KB
D10
GRN
R37
10K
GRP 1
GRP 2
R55
10K
R56
10K
+17
+10
0
-7
V-
D14
RED
D13
GRN
D12
GRN
D11
GRN
R54
10K
SW8
SW9
V-LED
V-
V-
C46
2U2
63V
C47
22U
25V
R109
100K
R108
100K
R105
100K
R106
100K
Q4
BC550
Q3
BC550
Q2
BC550
Q1
BC550
V-V-
C45
2U2
63V
R114
47K
1 2 3 4 6 9
57
8
IC7
BA6144
R113
9K1
V-
R98
10K
C38
220P
C40
22/25
C42
100/16
R95
10R
3
2
6
5
1
8
7
4
IC4
SSM2017
R93
10K
R94
24K
C37
47/63
D2
12V
D3
12V
D4
12V
T1
NTM1
LK2
R100
2K2
(OPT)
IN-
-20dB
MIC
XLR3
R91
1K5
C43
10N
R99
10R
R101
330R
SW5
SCREEN
-17V
R116
30K
Q6
BC560
R115
62R
+17V+17V
D8
1N4148
D7
1N4148
V+
C21
220N
5
6
7
IC5B
NE5532
R41
75
C23
220
R45
43R
R44
22K
R42
10K
1
2
3
VR8A
10K
R48
4K7
R49
3K3
R50
100K
R52
3K3
C24
33P
C25
100/16
3
2
1
8
4
IC6A
TL072
R57
10K
R58
10K
R59
10K
R60
10K
R61
10K
SW10
SW11
GRP 3
GRP 4
GRP 5
GRP 6
GRP 7
GRP 8
L MIX
R MIX
R62
10K
R63
10K
SW12
R51
4K7
R53
100K
C26
33P
C27
100/16
5
6
7
IC6B
TL072
R40
10K
R46
22K
R47
27R
4
5
6
VR8B
10K
R43
10K
V-
1
2
3
POT610KALPS
R39
4K7
C22
33P
R38
560K
TO SOLO SW
ON
D5
LED
LK5
SW7
LK4
TIP
RING
INSERT
RING NORMAL
2
1
3
4
5
JS2
1/4JACK
CHASSIS EARTH
PRE FADER
3
2
4
1
-17V
+17V
5
6
7
8 LK7
LK6 PRE FDR
PRE EQ
PRE
VR9
20K
SW13
SW SPDT
R64
100K
R65
10K
R66
10K
C28
100/16
3
2
1
8
4
IC5A
NE5532
C29
33P
SW14
DIRECT
TIP
RING
R67
75
R68
10K
C31
100/16
C30
33P
R69
10K
R71
75R
DIRECT
R70
10K
2
1
3
4
5
JS3
1/4JACK
AUX 1
AUX 2
AUX 1
AUX 2
R72
10K
R73
10K
R74
10K
R75
10K
3-4
5-6
SW15
VR10
20K
VR11
20K
VR12
20K
-POST FDR
PRE FDR
LK4
LK3
LK2 PRE EQ
EARTH TERMINAL
V+
MIC AMP V+
R83
10
C34
22/25
C35
22/25
9
10
+18V
+48V
0V
+48V
+18V
0V
0V
+18V
R81
10
C32
220/25
C33
220/25
AUX EARTH REF
MIX EARTH REF
AUX POT EARTH
PAN BUFFER EARTH
-18V
-18V
-18V
R82
10
R85
10K
R86
10K
V-
MIC AMP V-
R84
10
LAST R
LAST C
R99
C43
NOTES
LED METERING NOT SHOWN
FROM CUT LED
LK1
LK5
PFL
AFL
SOLO
V-
R78
47K
R79
10K
D6
LED R
SW16
SOLO ENABLE
SOLO AUDIO
AUX 1
AUX 2
R76
10K
R77
10K
Date: October 18, 1994 Sheet 1 of 1
Size Document Number REV
D CD1233-2 A
Title
FMR BUS/TAPE MONITOR
TEL:(0)81-570-7161 FAX:(0)81-577-3677
DDA, HOUNSLOW, MIDDX, TW3 2EB, ENGLAND.
C20
33P
C21
33P
C19
470N
C18
470N
R36
47K
S6
2PSUJ
R34
1K2
C22
100U
16V
5
6
7
IC4B
TL072
C26
15N
R35
47K
R42
10K
R43
10K
1 2
3
VR3
10KBR33
1K2
3
2
1
8
4
IC4A
TL072
1
2
3
7
VR6A
100KC
4
5
6
VR6B
100KC
V-
V+
C17
33P
C16
3N3
C24
2N2
R29
1K5
R31
47K
R30
1K5
R32
47K
R38
10K
R39
10K
1 2
3
VR2
10KB
3
2
1
8
4
IC3A
TL072
5
6
7
IC3B
TL072
1
2
3
7
VR4A
100KC
4
5
6
VR4B
100KC
V-
C10
100U 16V
R18
75R
C9
33P
5
6
7
IC2B
TL072
R17
10K
R19
10K
BUS/TAPE
LED1
GRN
S2
2PSUJ
1
2
3
VR1
10KB
CD
R14
10K
R15
1K
R16
1K
LED1 LED3
3
2
1
8
4
IC2A
TL072
C38
33P
C39
100U
16V
R69
75R
R66
3K
R68
3K
R70
3K
R64
12K
R65
12K
R72
10K
V+
V-
TAPE
XLR
EDAC
1
2
3
CON15
3WAY
WIR
1
2
3
CON16
3WAY
MH
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
CON17
16WAY
IDCRM
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
LK1A
20WAY
IDCVM
BUS1+
BUS2+
BUS3+
BUS4+
BUS5+
OUTPUT BUS OUTPUT BUS
ASSIGN LINKCONNECTOR
LINK FOR -10dBV
TAPE INPUT
R71
1K
C37
33P
R67
3K
1 2
LK3
LINK-OPT
LED11
LED1
BUS/TAPE GAIN
BUS ON
+/-15dB
LED11
GRN
C67
100U
16V
1 2
LK31
LINK-OPT
1 2
LK30
LINK
EXTERNAL
METER
LED
VU
0V
R139
10K
R140
22K
R141
3K6
PR1
5K
3
2
1
8
4
IC14A
TL072
1
2
3
CON7
3WAY
MHLR/A
V-
V+
INSERT
HF EQ
HI MID EQ
R40
3K3
R41
3K3
C23
4N7
2
1
3
4
5
CON3
1/4JACK
V+
LF EQ
LO MID EQ
C25
33N
R44
3K3
R45
3K3
1
2
3
VR5
10KB
1
2
3
VR7
10KB
R37
10K
R98
10K
S15
2PSUJ
METERINPUT
BUS1
R99
10K
R100
10K
R101
10K
R102
10K
R103
10K
S16
2PSUJ
S17
2PSUJ
S18
2PSUJ
BUS6
BUS5
BUS4
BUS3
BUS2
C46
33P
C47
100U
16V
R90
4K7
R91
3K3
R92
75R
R93
100K
3
2
1
8
4
IC8A
NE5532
V-
V+
R84
22K
R88
10K
R85
22R
BUS
XLR
EDAC
C7
100U 16V
C8
100U
16V
1
2
3
CON13
3WAY
WIR
1
2
3
CON14
3WAY
MH
PR2
5K
5 6
SIL1C
4K7
1
2
SIL1A
4K7
7 8
SIL1D
4K7
3
4
SIL1B
4K7
7 8
SIL2D
10K
C5
33P
3 4
SIL2B
10K
1 2
SIL2A
10K
5 6
SIL2C
10K
R11
75R
R12
75R
3
2
1
8
4
IC15A
NE5532
5
6
7
IC15B
NE5532
C72
100U
16V
R179
10K
VA-
VA+
S22
2PSUJ
TRACK ON
BUS TRIM
+/-15dB
R176
75R
R178
10K
C69
33P
5
6
7
IC14B
TL072
C70
100U
16V
R174
10K
R171
2K2
PR3
50K
1
2
3
VR13
10KB
CD
BUS6+
BUS7+
BUS8+
C79
100U
16V
LINK 19-20 FITTED
ONLY ON MODULES 1-8
R170
9K1
3
2
8567
4
IC1
NE5534
1 2
3
5
7
9
11
13
15
4
6
8
10
12
14
16
LK2A
16WAY
IDCVM
R183
10K
R184
75R
C73
33P
L1
0H
BUS1
BUS2
BUS3
V1-
MIXEARTH
MIX BUS
ASSIGN LINK
BUS INPUT
C75
100U
16V
SUB
S3
2PSUJ
R180
10K
R181
10K
MIXL
MIXR
FIT R180 FOR ODD NUMBERED MODULES
FIT R181 FOR EVEN NUMBERED MODULES
C6
33P
V+
V-
R160
10R
R161
10R
C62
22U
25V
C63
22U
25V
VA+
VA-
R89
10K
R86
22K
R87
33R
1
2
3
7
VR8A
10KB
4
5
6
VR8B
10KB
PAN BUFFER
C48
33P
C49
100U
16V
R95
3K3
R97
100K
R96
75R
R94
4K7
5
6
7
IC8B
NE5532
MIX
R104
10K
R105
10K
R110
10K
R111
10K
S21
2PSUJ
MIXL
MIXR
BUS8
BUS7
DIRECT
C35
33P
5
6
7
IC5B
NE5532
C36
100U
16V
R59
75R
R60
10K
R62
10K
2
1
3
4
5
CON4
1/4JACK
C33
100U
16V
R56
10K
R58
10K
R57
10K
FADER BUFFER
C44
33P
C45
220U
25V
C43
220N
R80
680K
R82
75R
3
2
1
8
4
IC5A
NE5532
R83
10K
V+
V-ON
R79
220K
LED3
GRN
LED3 LED4
V+
V-
1
2
3
4
5
6
7
8
9
10
CON5
10WAY
MHL
R185
10KR182
100K
R186
75R
R187
75R
C74
22P
C77
22U
25V
C78
22U
25V
C76
100N
BUS4
BUS5
BUS6
BUS7
BUS8
V+ V1+
V- V1-
V1+
C60
220U
25V
R158
10R
R156
10R
C64
22U
25V
+18V
0V
MAIN GROUND SPADE
1
PL1
V+LED
V+
S25
2PSUJ MOM
RLK1
0R
RLK2
0R
RLK3
0R
GROUND
WIPER
TOP
R81
4K7
1
2
3
CON8
3WAY
MH
PRE
POST
PRE EQ
PRE
PRE EQ
POST
PRE
POST
PRE
AUX1/2
AUX1/2
AUX3/4
AUX3/4
AUX3/4
SOLO
SOLO
*
*
*
NORMAL FACTORY POSITION
*
S8
2PSUJ
1 2
3
5
7
9
11
13
15
4
6
8
10
12
14
16
LK4
16WAY
IDCVM
DIRECT
AUX2
AUX1
C34
33P
S7
2PSUJ
1
2
3
VR9
20KA
1
2
3
VR10
20KA
DIRECT OUT
R63
75R
R61
10K
R114
10K
R115
10K
AUX1
5-6
SW12
4PSUJ
R116
10K
R117
10K
R118
10K
R119
10K
AUX2
AUX3
AUX4
AUX5
AUX6
AUX3
AUX4
1
2
3
VR11
20KA
1
2
3
VR12
20KA
TR6
BC182
R150
100K
LED6
GRN
LED6
V+LED
R149
100K
R145
100K
R142
15K
D7
18V
METERINPUT
V-LED
V-
PAN BUFFER EARTH
AUX POT EARTH
C61
220U
25V
C65
22U
25V
R157
10R
R159
10R
R163
10K
R162
10K
-18V
MWKEARTH
MIXEARTH
AUXREF
AUX POT EARTH
PAN BUFFER EARTH
C66
10N
R169
0R
R166
33R R168
0R
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
21 22
23 24
25 26
27 28
29 30
31 32
33 34
CON1
34WAY
IDCMH
0V
BUS8
BUS7
BUS6
BUS5
BUS4
BUS3
BUS2
BUS1
MIXR
MIXL
AUX6
AUX5
AUX2
AUX1
AUX4
AUX3
SOLOAUDIO
SOLOENABLE
MWKEARTH
0V
0V
0V
0V
0V
MIXEARTH
-18V
-18V
-18V
+18V
+18V
+18V
AUXREF
TR5
BC212
R137
33K
R138
75R
D5
D6
LED11
V+LED V+LED
V-LED
1 2 3 4 6 9
57
8
IC10
BA6144
C54
2U2
63V
R144
47K
R143
910R
C53
22U
25V
V-LED V-LEDV-LED
SIG
PEAK
TR10
BC182
C55
22U
25V
R154
100K
LED10
RED
V-LED
V-LED
V-LED
SOLO
S10
2PSUJ
LED4
YEL
LED4
SOLO
R164
47K
R165
10K
LED6
SOLOAUDIO
SOLOENABLE
LAST R
LAST C
NOTES
R187
C78
Date: June 30, 1993 Sheet 1 of 1
Size Document Number REV
D CD1191-A A
Title
FORUM STEREO INPUT
Tel: (0)81-570-7161 Fax: (0)81-577-3677
DDA, HOUNSLOW, MIDDX, TW3 2EB, ENGLAND.
R39
1K2
C22
33P
R41
47K
R32
10K
R33
10K
12
13
14
IC4D
TL074
C18
47N
R37
470
C20
470N
1 2
3
VR7A
10KB
R38
1K2
C21
470N
R40
47K
90Hz to 1.3kHz
C16
6N8
R26
10K
R27
10K
12
13
14
IC13D
TL074
R31
470
600Hz TO 8.8kHz
R22
1K5
1 2
3
VR2A
10KB
R23
1K5
C15
33P
C14
3N3
L CUT
L CUT AND R CUT = MONO
R13
75
C9
100U
16V
SW3
2PSUJ
1000U
4
5
6
VR1B
5KRD
R100
75RR975R
R10
100R
H1B
4K7
H1A
4K7
C8
33P
5
6
7
IC2B
TL072
+48V
+48V
INPUT B
SW1
SW DPDT
R11
470
SW2
SW 6PDT
R5
10k
C1
47/63
D1
12V
D2
12V
+IN
-IN
INPUT B
RIAA
LEFT
JR1
JR2
C7
2.2/63
R101
6K8
R102
6K8
R2
6K8
R1
6K8
R4
16K2R316K2
XL2
XL3
-IN
+IN
RIAA
INPUT B
RIGHT
R103
16K2
R104
16K2
JR3
JR4
R12
10
XL2
XL3
D3
12V
D4
12V
R7
2K2
R6
10K
C2
47/63
R8
24K
C3
220P
L+R-3dB
3
2
6
5
1
8
7
4
IC1
SSM2017
R118
10R
C6
100U
16V
H1C
4K7
R15
3K3
C10
33P
3
2
1
8
4
IC12A
TL072
H1D
4K7
H101A
4K7
R115
3K3
R CUT
R14
10K
C11
75
C11
100U
16V
R17
10K
SW5
2PSUJ
+
-
R24
47K
R25
47K
5
6
7
IC3B
TL074
4
5
6
VR4B
10KB
R28
220K
3
2
1
4
11IC3A
TL074
R29
10K
+
-
C17
10N
4
5
6
VR3B
100KC
10
9
8
IC3C
TL074
R30
6K8
3
2
1
4
1
1
IC4A
TL074
4
5
6
VR6B
10KB
R34
220K
R35
10K
C19
68N
4
5
6
VR5B
100KC
R36
6K8
10
9
8
IC4C
TL074
5
6
7
IC4B
TL074
EQ
R4275C24
100u
R43
10K
SW6
SW DPDT
C23
33P
R143
10K
C124
100u
R142
75
R141
47K
C122
33P
R139
1K2
C123
33P
10
9
8
IC15C
TL074
R140
47K
C121
470N
4 5
6
VR7B
10KB
C120
470N
R138
1K2
R132
10K
R133
10K
12
13
14
IC15D
TL074
C119
68N
10
9
8
IC15C
TL074
1
2
3
VR5A 100KC
R137
470
C118
47N
-
90Hz to 1.3kHz
R135
10K
3
2
1
4
1
1
IC15A
TL074
1
2
3
VR6A
10KB
R127
10K
R126
10K
12
13
14
IC14D
TL074
C117
10N
10
9
8
IC14C
TL074
R131
470
1
2
3
VR3A 100KC
C116
6N8
600Hz TO 8.8kHz
-
R129
10K
3
2
1
4
1
1
IC14A
TL074
1
2
3
VR4A
10KB
R123
1K5
4 5
6
VR2B
10KB
R122
1K5
C115
33P
C114
3N3R124
47K
R125
47K
5
6
7
IC14B
TL074
R116
75
C111
100U
16V
R117
10K
H101D
4K7
C108
33P
3
2
1
8
4
IC12A
TL072
H101C
4K7
SW4
SW DPDT
C110
33P
5
6
7
IC12B
TL072
H101B
4K7
3
2
1
8
4
IC13A
TL072
C12
33P
R19
4K7
R18
4K7
C106
100U
16V
C105
1000U
1
2
3
VR1A
5KRD
R110
100R
3
2
6
5
1
8
7
4
IC11
SSM2017
R109
7R5
D102
12V
D101
12V
R105
10K
R107
2K2
C101
47/63
R111
18
XLR1
C51
10N
C103
220P
R108
24K
D104
12V
D103
12V
R106
10K
C102
47/63
R20
75
1
2
3
A
R49
220K
R50
680K
C29
220N
5
6
7
IC6B
NE5532
0 REV
R113
75R
R21
10K
C13
100U
16V
R53
75
C31
220U
16V
LM
+
BALANCE
+3dB,-6dB
R114
10K
C109
100U
16V
R128
220K
1
2
3
VR12A
10KB
R60
5
6
7
IC8B
NE5532
+
R134
220K
R130
6K8
1% RESISTOR
R136
6K8
SW11
SW DPDT
R
METER_R_INPUT
METER_L_INPUT
CN6-15
CN6-13
CN6-11
CN6-9
CN6-7
CN6-5
1-2
3-4
5-6
R165
10K
R65
10K
R66
10K
R166
10K
R67
10K
R167
10K
SW12
SW DPDT
SW13
SW DPDT
R63
75
C36
220U
16V
R64
10K
R163
75
C136
220U
16V
R164
10K
R58
10K
R59
3K3
R158
10K
4
5
6
VR12B
10KB
R159
3K3
R160
C35
33P
R62
3K3
R61
8K2
3
2
1
8
4
IC8A
NE5532
C135
33P
R52
10K
H3A
4K7
H3B
4K7
R54
3K3
C32
33P
3
2
1
8
4
IC7A
TL072
H3C
4K7
JR12
JR11
R51
4K7
C30
33P
ON
SW15
SW 4PDT
JR9
JR10
PRE FADE MONO
L+R-3dB
H2A
4K7
H2A
4K7
R46
3K3
C25
33P
3
2
1
8
4
IC5A
TL072
CN4-1
CN4-2
CN4-3
CN4-8
CN4-9
CN4-10
CN5-1
CN5-2
CN5-3
CN5-4
JR13
D5
GREEN
1
2
3
A
R149
220K
R150
680K
C129
220N
3
2
1
8
4
IC6A
NE5532
C130
33P
R151
4K7
L+R-3dB
POST FADE MONO
R152
10K
R153
75
C131
220U
16V
RM
LL1LL2
R162
3K3
R161
8K2
H3D
4K7
C33
33P
5
6
7
IC7B
TL072
R55
75
C34
100U
16V
D8
RED
SW16
SW DPDT
J2
R56
10K
PFL
PFL
CN6-3
CN6-1
7-8
CN6-19
CN6-17
MIX
R68
10K
R168
10K
R69
10K
R169
10K
SW14
SW DPDT
SW10
SW DPDT
LL2
R85
100K
R84
100K
R83
100K
Q2
BC550
D12
GREEN
D13
GREENQ3
BC550
Q4
BC550
D14
GREEN
+17V
D11
18U
D10
1N4148
R79
10K
D9
1N4148
6x100K H4
CN6-2
CN6-4
SOLO ENABLE
SOLO AUDIO
METER_R_INPUT
METER_L_INPUT
C37
100u
R78
10K
5
6
7
IC9B
TL072
R70
10K
R71
47K
SW7
SW DPDT
SW8
SW DPDT
J3
J4
VR9
20A
VR8
20KA
PRE
LM
RM
H2D
4K7
C26
33PH2C
4K7
5
6
7
IC5B
TL072
R47
75
C27
100U
16V
R48
10K
LL1
CN6-26
EARTH SENSING RESISTOR
AUX EARTH
R88
10K
-17V
+17V
+17V
R44
62
Q1
BC560
R94
10R
R96
10R
R98
10R
1N4148
1N4148
CN4-4
+17V
-17V
CN4-6
CN4-7
CN4-5
CN6-32
CN6-30
CN6-28
R45
30K
R90
10R
R92
10R
CN6-16
CN6-14
CN6-12
CN6-10
CN6-8
CN6-6
CN6-24
CN6-22
CN6-20
C41
220U
25V
C42
220U
25V
R91
10R
R93
10R
C43
22U
25V
C44
22U
25V
+V1 +V2 +V3 +V4
-V1 -V2 -V3 -V4
-17V
R95
10R
R97
10R
R99
10R
C45
22U
25V
C47
22U
25V
C49
22U
25V
C46
22U
25V
C48
22U
25V
C50
22U
25V
C4
22U
25V
C104
22U
25V
CN6-18
BALANCE POT
EARTH SENSING RESISTOR
MAIN GROUND SPADE
CN7
CN2-34
CN2-33
+48V
R89
10K
NOTE METER NOT SHOWN
SEE PRO INPUT SCHEMATIC
J1
VR10
20KA
VR11
20KA
SW9
SW 4PDT
PRE
5-6
CN6-27
CN6-25
CN6-23
CN6-21
CN6-29
CN6-31
AUX1
AUX2
AUX3
AUX4
AUX5
AUX6
R178
10K
C137
100u
3
2
1
8
4
IC9A
TL072
R72
10K
R73
10K
R77 10K
R76 10K
R75 10K
R74 10K
D109
1N4148
R179
10K
D110
1N4148
R80
91K
C40
1U0
R81
18K
R57
18K
R82
47K C38
2U2
1 2 3 4 6 9
57
8
IC10
BA6144
-17V -17V
-17V -17V
C39
C22U
R87
100K
R86
100K
Q5
BC550
Q6
BC550
D16
RED
D15
GREEN
-17V -17V
-17V
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