JBL PowerBass PB12, Service Manual

Page: 41 / 43

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
A
B
C
D
E
F
G
H
I
15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
I
H
G
F
E
D
C
B
A
Part No:
Date:
Drawn:
Rev.
Version 7.0 (PWRAMP)
14-Feb-2001
MS/LL
1
Sheet:
2 of 2
1
2
3
4
5
6
Un-designated Connector
NOT USED
BR RECT
RS604
R40
1k
R41
1000k
U1
TLO64
C41
1uF
D12
1N5242B
D14
1N4148
C42
100uF
R43
1000k
D11
1N4148
U1
TLO64
R44
100k
R46
1000k
R47
10k
Q1
2N5457
R45
470K
C40
10uF
D6
1N5234B
C6
100nF
R7B
10k
R6
47R
D1
1N4744A
D2
1N4744A
C21
100nF
C22
100nF
D3
1N5265B
R3
8M2
R1A
7k5
C32
22uF
U1
TLO64
R34
10k
4
11
C27
3n3F
R33
23k7
C26
10nF
R32
47k
R31
47k
U1
TLO64
R22
42K2
R23
187k
R26
6k8
R30
10k
R29
1k2
R28
1k2
C20
220nF
C3
100nF
R5
56k2
L2
8u5H
L1
220uH
C10
4u7F
C11
330nF
R15
NOT USED
L3
8u5H
L4
8u5H
R10B
0.1R R10C
0.1R R10A
0.1R
Q10
2N5401
R11
1k
Q11
2N5401
R13
47k
R14
3k3
R12
1k
Q12
2N4401
CZ
100nF
CW
NOT USED
V+
V-
CMC
2m2H
C7A 100nF
C7B
100nF
R2B
7k5
C1
2200uF
C2
2200uF
9
8
10
R8A
10k
R8B
10k
R1B
7k5 R1C
7k5
R2C
7k5 R2A
7k5
12
13
14
R27
10k
4
11
R7A
10k
+15V
GND
GND
SIG
-15V
mute
2
3
1
5
6
7
R21
4K7
R42
22k
D7
1N4148
D8
1N4148
D10
1N5242B
R50
2k2
R100
NOT USED
4
11
4
11
To U1 Pin 4
To U1 Pin 11
SHORT CIRCUIT PROTECT
SIGNAL LED & AUTO MUTE
To/From PREAMP
D4
1N4938
R4
33k
UVLO
+15
-15
R24
NOT USED
R25
NOT USED
CONNECTOR
C24
330nF
C25
NOT USED
R7C
10k
R9
NOT USED
1
2
3
AV SW
NOT USED
+6V
V+
V-
+15V
S/D
FR
I/P
GND
-15V
O/P
MODULE
S64
D5
1N4735A
On Faceplate
SW SPST
R48
4k7
D13
1N4148
R49
4k7
On Harness
2 Clr LED
On Harness
2 Clr LED
LED1/2 Preamp
LED1/2 Preamp
Not Connected
R48 & R49 changed to 4k7
TRX
MCI 4632
3AG FUSE
2A SloBlo
To AC Feed
To GND
To AC Return
To Power Cord
To Power Cord
TRANSFORMER IS MOUNTED ON FACEPLATE
TRANS. PRI.
QUICK FIT TERMINAL
LIVE
QUICK FIT TERMINAL
SPK 1
QUICK FIT TERMINAL
SPK 2
QUICK FIT TERMINAL
AC Feed
QUICK FIT TERMINAL
GND
QUICK FIT TERMINAL
AC Return
QUICK FIT TERMINAL
MOLEX 2
V+ LED
2
3
MOLEX 2
LED Harness
2
3
R add
220k