JBL JSR-400 Service Manual page 63

I J
CN4
VO UP
1
VO DO
2
3
15V
4
G
5
-15V
6
WA3
REAR
7
5V
8
CENTER
9
G
10
R
11
G
12
L
13
G
14
K L
VOLUME PART
IC3
TA72915
15V R3
R2
R51
10K
R4
100 4.7
5.6K
C3
47/16
VR1
C4
47/16
C2
MOTOR
C1
100/10V
100/10V
C8
R14
4.7/50
VR1 100K
+
IC2
50KA
NJM4558DD
R9
100K
R15
100K
C12
C7
47/16
VR1B 4.7/50
+
R10
50KA
8.2K
C10
R8
R12
100P
47K 1K
C14
C6
+
4.7/50
VR1C 4.7/50
+
50KA
R17
IC1
R6
47K
NJM4558DD
47K
C5
4.7/50
VR1D
+
50KA
C15
4.7/50
+
R7
47K
R11
8.2K R16
C9
47K
R13
100P
1K
M N
TO WA11
CN3
CN7
C16 WA7
4.7/50
L
L
+
1
1
G
G
2 2
R
R
3
3
C13
4.7/50
+
R54
47
R57
15V
C11 47
47/16
+
C43
47/16
R19
470
R56
47
R55
47
R18
470
-15V
CN10
R83 C82
330 100P
VIDEO L
O P
47/16 47/16
C45 C45
C46 C46
47/16 47/16
R59
47
L G R
R58 R58
WA6
47 47
CN6
L G R
4
VR4B
100KMN*2
5
6
3
2
VR4A
100KMN*2
1
BALANCE
TREBLE BASS
R63
22K
C61 C49
R73
332M 2.2K 100*2
68P
C52
VR2A
1
1
153M
VR3A
C54
100K*2
2
C64 2
C48
22/16
3
183M 3
823M
R66 R65
R79
3.9K
100K
820
R72
15V
1K
TONE PART
C62
4.7/50
+
Q R
JSR-400 PAGE 44 - 2 of 4
1
2
-15V
15V
3
4
5
R OUT
R74 6
1K
R71
100K
R67
C59
100K
4.7/50
7
C60
100P
IC8
JRC4558DD
C56
4.7/50