Table of Contents
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8
AUDIO
gCT4
SH
1
LT
LO
2
LINE
+4dBu BAL
HI
3
A IN
SH
4
RT
LO
5
+4dBu BAL
HI
D
6
SH
7
LT
LO
8
LINE
+4dBu BAL
HI
9
B IN
SH
10
RT
LO
11
+4dBu BAL
HI
12
LOGIC
gCT3
"LT" -10dBu
GAIN SET
1
AUDIO COMMON
2
"RT" -10dBu
GAIN SET
3
AUDIO COMMON
4
START
5
START COMMON
6
STOP
7
STOP COMMON
8
REMOTE OFF
9
OFF COMMON
C
10
READY
11
READY COMMON
12
AGND
VCC
gSW1
2
1
gC20
0.22uF
3
4
A/B
gSW2
2
1
gC26
0.22uF
3
4
PGM
B
gSW3
2
1
gC25
0.22uF
3
4
AUD
gSW4
2
1
gC30
0.22uF
3
4
TEL
gSW5
2
1
gC29
0.22uF
3
4
CUE
AGND
gR77
gCT2
4.99K
1
A
"ON"
2
3
4
AGND
5
"OFF"
GND
SW-R5 PCB
8
AGND
MB-5 Mother Board (Line Input Section "g")
Schematic - Sheet 7 of 10
R-5/Mar 2001
7
6
gC1
10pF
AGND
MMBTA55
16
1
gU1
gQ1
15
2
14
3
gU1
gR6
gC3
3.32K
10pF
13
4
AGND
7
gU1
10
9
8
5
12
gU1
6
11
gC5
10pF
AGND
VCC
gU8
RESET
4
PR
5
Q
3
CK
2
D
6
Q
gR42
1
CLR
1.00K
74LS74
GND
GND
gU8
10
PR
9
Q
11
CK
12
D
gC7
8
Q
gR55
13
CLR
10pF
1.00K
74LS74
AGND
GND
GND
gU9
4
PR
5
Q
3
CK
2
D
6
gR53
Q
1
CLR
1.00K
74LS74
GND
GND
gU9
10
PR
9
Q
11
CK
12
D
8
gR61
Q
13
CLR
1.00K
74LS74
GND
GND
gU10
4
PR
5
Q
3
CK
VCC
2
D
6
Q
gR58
1
CLR
1.00K
74LS74
4148
GND
GND
gD2
MMBTA55
VCC
VCC
gD1
VCC
gR72
gU10
4.99K
10
PR
9
Q
11
CK
12
D
8
Q
13
CLR
MMBTA55
gC35
gC34
74LS74
GND
0.22uF
0.22uF
GND
GND
7
6
5
4
-2dBu
8
V+
8
V+
1
15
2
2
-
X
X_Y
-
TL072
1
2
6
TL072
1
Y
INH
gU2
gU5
gU4
3
10
3
+
S
+
4053
gR33
gR15
V-
3.32K
V-
4
4
AGND
4.99K
AGND
AGND
-2dBu
8
8
V+
V+
6
3
4
6
-
X
X_Y
-
TL072
7
5
6
TL072
7
Y
INH
gU2
gU5
gU4
9
5
5
+
S
+
4053
gR25
GND
gR17
3.32K
V-
V-
4
4
AGND
4.99K
AGND
AGND
-2dBu
9 PIN JST
CONNECTOR
PINOUT
VIEWED FROM
8
V+
ABOVE
(COMPONENT
SIDE)
2
-
TL072
1
gU3
1
3
+
gR34
2
gR19
V-
3.32K
3
4
4.99K
4
5
AGND
6
AGND
7
8
9
-2dBu
8
V+
6
-
TL072
7
gU3
5
+
gR26
gR21
3.32K
4
V-
4.99K
AGND
AGND
MC14053BCP_S
IC PINOUT
74LS74N_S
VIEWED FROM ABOVE
IC PINOUT
(COMPONENT SIDE)
VIEWED FROM ABOVE
(COMPONENT SIDE)
1
Xb
VDD
16
2
Yb
X_Yb
15
1
3
Xa
X_Yc
14
2
4
X_Ya
Xc
13
3
VCC
5
Ya
Yc
12
4
gR75
6
INH
A
11
5
1.00K
7
VEE
B
10
6
8
VSS
C
9
7
gQ3
VCC
gR73
A/B, BUS ASSIGN
SWITCH PINOUT
1.00K
VIEWED FROM ABOVE
gQ2
(COMPONENT SIDE)
VCC
gC21
1
1
0.1uF
3
4
2
2
GND
5
4
Page 5-8
3
-2dBu
-2dBu
-2dBu
22uF gC27
LT
8
V+
9 6
gC33
22uF
2
gCT1
-
10K
22uF gC23
7
-14dBu
TL072
1
gU6
3
+
AGND
V-
4
AGND
FADER
-2dBu
-2dBu
-2dBu
22uF gC28
RT
8
V+
1 4
gC31
22uF
gCT1
6
-
10K
22uF gC22
3
TL072
7
-14dBu
gU6
5
+
AGND
4
V-
AGND
AGND
GND
NOTE: PHASE SYMBOLS DENOTE SIGNAL POLARITY
IN PHASE
OUT OF PHASE
MR12
CONNECTOR
PINOUT
VIEWED FROM ABOVE
(COMPONENT SIDE)
3
2
1
TL072 IC PINOUT
CLRa
VCC 14
VIEWED FROM ABOVE
6
5
4
Da
CLRb
13
(COMPONENT SIDE)
CKa
Db
12
9
8
7
PRa
CKb
11
1
OUT
V+
8
12
11
10
Qa
PRb
10
2
IN-
OUT
7
Qa
Qb
9
3
IN+
IN-
6
VSS
Qb
8
4
V-
IN+
5
CONTRACT NO.
VCC
VCC
VCC
APPROVALS
gC17
gC24
gC32
DRAWN
0.1uF
0.1uF
22uF
CHECKED
GND
GND
GND
ISSUED
W# 700261
3
2
1
PGM LT
PGMLTACN
ACN
14
13
X_Y
X
6
12
INH
Y
gU7
11
S
D
4053
PGM RT
PGMRTACN
ACN
15
1
X_Y
X
6
2
INH
Y
gU11
10
S
4053
AUD LT
AUDLTACN
ACN
15
1
X_Y
X
6
2
INH
Y
gU7
10
S
4053
AUD RT
AUDRTACN
ACN
4
3
X_Y
X
6
5
INH
Y
gU11
9
S
4053
TEL
TELACN
ACN
4
3
X_Y
X
6
5
INH
Y
gU7
9
S
4053
C
14
13
X_Y
X
6
12
INH
Y
gU11
11
S
4053
CUE
CUEACN
ACN
14
13
X_Y
X
6
12
INH
Y
11
gU5
S
4053
AGND
Vdd
Vdd
gC12
0.1uF
gC14
AGND
0.1uF
Vee
Vee
B
CUE
gD3
CUEENABLE
ENABLE
4148
VCC
VCC
GND
GND
AGND
AGND
V+
V+
gC10
gC15
0.1uF
0.1uF
gC9
gC18
AGND
0.1uF
0.1uF
V-
V-
MB-5
A
DATE
AUDIOARTS ENGINEERING
AUDIOARTS ENGINEERING
AUDIOARTS ENGINEERING
AUDIOARTS ENGINEERING
AUDIOARTS ENGINEERING
AUDIOARTS ENGINEERING
600 Industrial Drive
SA
3-21-01
New Bern, NC 28562
25S0007
SIZE
FSCM NO.
DWG. NO.
REV
D
7 OF 10
MB-5B PCB
SCALE
SHEET
2
1
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