11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
I
I
J
J
K
K
L
L
M
M
N
N
O
O
P
P
Q
Q
of
Filename:
PCB#
Sheet
2
1
Product
Date:
Rev:
YsType:Yorkville
M1590V03sch.sch2006
M1590
Mon Apr 21, 2014
INPUTS
V03
SB200H
+15V
IG
IG
SG
SG
D3
4148
IG
SG
SG
AG
AG
IG
SG
IG
-15V
SG
SG
N
E
T
00080
-15V
R1
1/
4W 47K
.
SG
N
E
T
00047
IG
R25
1/
4W 22K
.
D1
4148
N
E
T
00054
R68
1/
4W
.
10K0
SG
SG
R43
1/4W
.
2K49
C10
63V
470N
SG
R11
1/4W
.
10K0
C23
100V
68N
TO P104
2
2
W1:B
+15V
R76
1/4W
.
10K0
AMP-1
-15V
-24VDC
SG
SG
IG
AG
SG
C11
16V
10U
IG
C1
100V
100P
-15V
+15V
SG
AG
1N4732A
1W0
ZD6
4V7
1N4732A
ZD2
4V7
1W0
+15V
1/4W
R77
100K
6
W2:F
7
2
W2:B
7
TO P102
+15V
Bass
Low-Mid
Hi-Mid
3
W3:C
3
1
W3:A
3
NET00061
IG
Treble
Low
Expander
2 of 2
8
W7:H
9
6
W7:F
9
3
W7:C
9
4
W7:D
9
1
W7:A
9
SG
SG
SG
NET00047
NET00061
NET00054
NET00241
+15V
IG
RIBBON CABLE
IG
IG
8
9
W5:H
6
9
W5:F
3
9
W5:C
4
9
W5:D
1
9
W5:A
IG
R38
1/
4W 2K
.
BLK
W4:B 2
RED
W4:A 2
Thermistor
C43
63V
100N
AG
C21
100U
25V
R44
1/4W
.
2K49
D23
4148
SG
R168
1/
4W 27K
.
R7
1/4W
MINI
20K0
C73
63V
100N
+15V
C22
100U
25V
R31
1/4W
.
10K0
SG
1/
4W 10K0
R136
.
SG
R10
1/
4W 1M
.
R41
1/4W
.
1K2
C62
63V
100N
1
2
W1:A
1/
4W
.
R27
4M7
D5
4148
R47
1/4W
.
15K
AMP-2
Com
Out
In
S3:A
R98
1/
4W 2K
.
1/
4W 2K
R74
.
R87
1/4W
.
2K
C265
63V
100N
T
B
M
GAIN
10K
5C
P1:A
SG
ZD3
1N750ARL
0W5
4V7
R30
1/4W
.
10K0
R178
1/4W
.
4K7
REF
OUT
IN
6871
U11
MC7915CT
TO220
63V
C57
1U
REF
OUT
IN
6872
U9
MC7815CT
TO220
R94
1/
4W 2K2
.
1/
4W 100K
R48
.
C3
10V
47U
C8
16V
10U
R95
1/
4W 2K2
.
Q13
5105
MPSA13
TO92
3
W2:C
7
4
W2:D
7
5
W2:E
7
7
W2:G
7
1
W2:A
7
2
W3:B
3
TO P103
4
OUT
9
W7:I
9
7
W7:G
9
5
W7:E
9
2
W7:B
9
FRONT PCB
R37
1/8W
FLMP
681R
R67
1/4W
.
2K49
R66
1/4W
.
10K0
1/
4W
100K
R33
.
C59
2U2
63V
INPUT_CH2
-15V
R42
1/
4W 2K49
.
100V
C32
33N
R65
1/
4W
.
4K99
R70
1/4W
.
4K99
1
2
-
3
+
U15:A
MC33078P
1
2
-
3
+
U6:A
MC33078P
9
9
W5:I
7
9
W5:G
5
9
W5:E
2
9
W5:B
W8
CHASSIS_GND
16AWG
GRN
R64
1/8W
FLMP
681R
IG
R6
1/4W
.
10K0
R57
1/8W
FLMP
681R
Out
Com
In
S2:B
8
V+
4
V-
U1:C
R91
1/4W
.
10K0
8
V+
4
V-
U2:C
Q2
5113
TO92
MPSA42
C42
63V
100N
R9
1/4W
.
47K
C200
63V
100N
R45
1/4W
.
2K49
C54
63V
220N
8
V+
4
V-
U7:C
C61
63V
100N
8
V+
4
V-
U8:C
C74
63V
100N
D4
4148
7
6
-
5
+
U1:B
TL072
8
V+
4
V-
U14:C
C67
63V
100N
63V
C6
1U
63V
C5
1U
ZD5
10V0
0W5
1N5240BRL
63V
C51
1U
6
-15
3
+15
5
SG
2
IG
R71
1/
4W
.
2K49
7
6
-
5
+
U6:B
MC33078P
J4
LINE OUT
6
5
3
1
2
4
S
T
R
J6
-
-
-
AUX IN
D2
4148
C25
100V
33N
C27
100V
33N
C7
100V
33N
SC1
TONE1
-24VDC
AG
+24VDC
C71
63V
100N
C75
63V
100N
BLK
2
W6:B
RED
2
W6:A
FAN
R29
1/
4W 3K
.
C20
100V
100P
BEAD
C45
100V
100P
4
3
U12:B
1
2
NSL-32SR2
U12:A
6858
7
6
-
5
+
U7:B
MC33078P
R3
1/4W
.
10K0
C24
100V
33N
R4
1/4W
.
10K0
1
2
-
3
+
U7:A
MC33078P
R93
1/4W
.
30K
R92
1/4W
.
15K
7
6
-
5
+
U5:B
MC33078P
7
6
-
5
+
U2:B
MC33078P
C4
50V
330P
1
2
-
3
+
U1:A
TL072
C102
63V
100N
50V
C56
100N
LD1
6554
BLU
.
LD2
RED
6405
.
R2
1/4W
.
1M
D
S
Q1
5122
TO92
J109
1/4W
2K2
R26
SC2
INPUT_CH2
1N750ARL
ZD4
0W5
4V7
R23
1/4W
.
10K0
R177
1/4W
.
470R
R96
1/4W
.
2K2
1
IN
NET00241
REAR PCB
D
S
Q3
5122
TO92
J109
Out
Com
In
S1:B
7
6
-
5
+
U15:B
MC33078P
1/
4W
10K0
R88
.
R133
1/4W
.
270R
R83
1/4W
.
270R
R127
1/4W
.
270R
TONE CONTROLS[Q2]
6
5
1
3
4
2
S
T
R
TUNER OUT
J7
Out
Com
In
S2:A
GROUND LIFT
R20
1/4W
.
10K0
C47
50V
22U
C31
50V
22U
6
1
3
4
2
5
S
T
R
-
-
-
J8
PHONES
8
V+
4
V-
U6:C
R40
1/4W
.
47R
8
V+
4
V-
U5:C
R39
1/4W
.
100R
C26
63V
100N
R8
1/4W
.
10K0
1/
4W 1K0
R49
MINI
R86
1/4W
.
2K
C39
63V
220N
1
2
-
3
+
U5:A
MC33078P
C101
63V
100N
In
Com
Out
S3:B
MUTE
1N5251BRL
ZD1
22V0
0W5
1_
1+
6973
J3
SPKON_JCK_COMBO
SPKR OUT
8
V+
4
V-
U15:C
50V
C50
100N
1
2
-
3
+
U2:A
MC33078P
1
2
-
3
+
U8:A
MC33078P
7
6
-
5
+
U8:B
MC33078P
7
6
-
5
+
U14:B
TL072
1
2
-
3
+
U14:A
TL072
Out
Com
In
S1:A
EQ PRE/POST
TONE CONTROLS[C1]
6
5
3
1
2
4
S
T
R
J5
-6dB INPUT
6
5
1
3
2
4
S
T
R
0dB INPUT
J2
