JBL PB12 Service Manual page 21

1 2
F
R100
NOT USED
Un-designated Connector
To U1 Pin 11
+15V 6 +15
mute 5
GND 4
GND 3
SIG 2
1 -15
-15V
C24
To U1 Pin 4
E
NOT USED
330nF
R21
4K7
C25
NOT USED
R22
42K2
R23
CONNECTOR
187k AV SW
4
D
12
14
U1
13
TLO64
NOT USED
11
R24
NOT USED
R25
NOT USED
C
R32
47k
10
R33
23k7
C26
10nF
B
A
1 2
3 4
TLO64
4 C41
3
1
U1
2
11 1uF
C40
R40
R41
1k 1000k
10uF
C6
R7A R7B R7C
10k
10k 10k
100nF
1
R26
1N4148
2
R27
D7
6k8
3
10k
R28
1k2
R29
1k2
R31 R30
D8
47k 10k
1N4148
4
C32
R34
8
U1
9
NOT USED
10k
TLO64
22uF
C27
11
3n3F
R8A R8B
10k
10k
2200uF
C2
C1
2200uF
3 4
5 6
R45
SIGNAL LED & AUTO MUTE
470K
1N4148
R50 D14
2k2 D11
1N4148
C42
R43 1N5242B
D10
1000k
D12 100uF
R42 R44
1N5242B
100k
22k
D6
R6
47R
1N5234B
S64
+6V
D5
1N4735A
C20
1N5265B
V+
D3
UVLO 220nF
R1A R1B R1C
7k5 7k5 7k5
D4
R3 O/P
8M2
R4
33k
1N4148
V-
+15V
R9
S/D
R5
FR
C21 56k2
D1
100nF
I/P
GND
D2
C22
-15V
100nF
MODULE
1N4744A
V+
V-
R2A R2B R2C
BR RECT
7k5 7k5 7k5
RS604
5 6
7 8
R46
1000k
Not Connected V+ LED
4
5
2
7
U1
1
6
TLO64
D13
MOLEX 2
1N4148
11
R47
10k
R49 R48
15k 10k
Q1
2N5457
SHORT CIRCUIT PROTECT
Q11
R12
2N5401
1k
Q10
R11
2N5401
1k
R10A R10B R10C
0.1R 0.1R 0.1R
C11
C10
4u7F
330nF
L2 L1
220uH
8u5H
R15
C3
NOT USED
100nF
MCI4632
3AG FUSE
On Faceplate
C7A 100nF
CMC
C7B 2A SloBlo
2m2H
100nF
Title
B12 PwrAmp (6.0 PCB)
Size Number
1
D
Date: 20-Apr-2000
File: T:\PB12 sch Folder\..\PB12 PwrAmp Rev5.sch Drawn By:
7 8
9 10
LED1/2 Preamp
LED1/2 Preamp
F
On Harness
1
2
On Harness On Harness
MOLEX 2
2 Clr LED 2 Clr LED
E
R13 R14
47k 3k3
Q12
2N4401
D
L4
SP Neg
8u5H
CZ
100nF
L3
SP Pos
C
8u5H
CW
NOT USED
B
On Faceplate
AC Feed
SW SPST
AC Return
A
Revision
5
Sheet of
1 1
MA / LL
9 10