JBL PB-12 Schematic
151413121110987654321
I
3rd Order Hi-Pass
C8
0r
R15
NOT USED
13
U1
12
C11
100nF
R16
NOT USED
C9
1k
14
R20
6k8
To Pin 11 U1/U2
To Pin 14 U1/U2
2
3
TLO64
R17
56k2
Un-designated Connector
+15V
-15V
17
6
+15V
mute
5
GND
4
GND
3
SIG
2
-15V
1
NOT USED
To/From PWRAMP
R27
DUAL RCA
B-POST HiLev I/O
R
L
OUT
R In
GND
L In
RCA CONNECTOR
C1
200uF
R
L
C2
IN
200uF
H
G
F
E
D
LED HARNESS
On Harness
C
2 Clr LED
B
On Harness
2 Clr LED
From PwrAmp
From PwrAmp
604r
C18
C19
R24
604r
R1
4k7
R2
4k7
MOLEX 2
SOCKET HEADER
1
2
330pF
330pF
R28
R25
R6
R5
R4
R3
100k
R8
2k7
LED 2
MOLEX 2
33k2
33k2
1
2
1
2
LED1
NOT USED
C3
D51
C4
220pF
220pF
1N4148
6
5
1N4148
D53
U1
1N4148
R11
59k
7
1N4148
D54
10
9
D52
LO PASS CONTROL 3
LO PASS CONTROL 4
R10
+15V
U1
-15V
R9
2k7
C5
220pF
8
NOT USED
R22
6k8
11
NOT USED
C6
220p
7
9
10
12
1N4148
10k
D50
8
C21
100nF
2nd Order LO-PASS
0r
R21
C12
100nF
R23
0r
REMOTE
LEVEL
NOT USED
1N4148
D55
13
12
100nF
3
2
1
100nF
U2
C13
C20
14
C17
150nF
5k POT
1
LEVEL
2
2
3
2nd Order Hi-Pass
R33
12k1
C16
100nF
R34
120k
SW SPDT
1
3
LoPass Defeat Sw.
SW SPDT
1
3
Phase Switch
-15V
2
U2
3
+15V
C23
100nF
2
R13
33k2
LM324
R12
45k3
1
R26
4k7
R14
68k1
6
U2 U1
5
R35
137k
LO PASS CONTROL 1
R18
20k POT
1
6k8
R19
6k8
C22
LO PASS CONTROL 2
100nF
2
C7
0r
2nd Order LO-PASS
C10
3
100nF
20k POT
5
4
6
GAIN STAGE
C30
NOT USED
9
10
8
U2
R30
10k
I
H
G
F
E
D
C
B
Part No:
MBD-30040901 (PREAMP)
Date:
16-Aug-2001
Drawn:
A
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Rev.
MS/LL
1
Sheet:
1of2
a
A
151413121110987654321
I
R46
1000k
R42
22k
220nF
V-
R5
53k6
C20
R45
470K
R44
100k
5
6
11
C3
100nF
To GND
CMC
3m6H
4
U1
To AC
To AC
TLO64
L2
8u5H
7
R47
10k
Q1
2N5457
V+ LED
L5
8u5H
1
2
3
L6
D13
1N4148
R49
4k7
R48
4k7
8u5H
R48 & R49 changed to 4k7
SHORT CIRCUIT PROTECT
2N5401
R10A
0.1R
C10
4u7F
L1
220uH
80137
!
TRX
AMXT003F
R12
1k
Q10
R11
1k
R10B
R10C
0.1R
0.1R
C11
330nF
R15
NOT USED
TRANS. PRI.
QUICK FIT TERMINAL
Q11
2N5401
5 X 20mm
R13
47k
!
800mAL
Q12
2N4401
80141
L4
8u5H
L3
8u5H
TRANSFORMER IS MOUNTED ON FACEPLATE
30521
!
C7A
CX
100nF
220nF
C7B
400V
100nF
30535
!
30521
!
AC
QUICK FIT TERMINAL
GND
QUICK FIT TERMINAL
AC
QUICK FIT TERMINAL
Part No:
MBD-30040901 (PWRAMP)
Date:
16-Aug-2001
Drawn:
MS/LL
Rev.
Sheet:
1
SIGNAL LED & AUTO MUTE
C6
100nF
R50
2k2
8M2
1N4148
D14
D11
C42
D12
100uF
1N5242B
D6
1N5234B
1N4735A
R1A
R1B
7k5
7k5
R9
100nF
100nF
C21
C22
R6
47R
D5
UVLO
R1C
7k5
R4
33k
1N4938
1N4744A
R43
1000k
D10
1N5242B
1N5265B
D4
D1
D2
D3
R3
8M2
1N4744A
1N4148
S64
MODULE
+6V
V+
O/P
V-
+15V
S/D
FR
I/P
GND
-15V
R100
H
G
F
E
D
C
Un-designated Connector
+15V
mute
GND
GND
SIG
-15V
To/From PREAMP
NOT USED
R22
42K2
R25
NOT USED
*ALL SAFETY PRECAUTIONS IN THIS MANUAL SHOULD BE
FOLLOWED DURING SERVICING. COMPONENTS IDENTIFIED
WITH THE IEC SYMBOL
NOT USED
1
2
3
4
5
6
To U1 Pin 4
C25
R23
187k
12
13
4
U1
11
To U1 Pin 11
+15
-15
C24
330nF
R21
4K7
NOT USED
CONNECTOR
AV SW
1
R24
C26
10nF
R32
47k
R33
23k7
2
3
NOT USED
10
9
U1
11
14
TLO64
NOT USED
!
IN THE SCHEMATIC DIAGRAM ARE
R31
47k
4
TLO64
C40
10uF
R26
6k8
8
R34
10k
C27
3n3F
R40
1k
D7
D8
2
1N4148
R28
1k2
R29
1k2
1N4148
R add
C32
22uF
220k
U1
4
11
R41
1000k
R7A
10k
TLO64
R27
10k
R30
10k
C41
1
1uF
R7B
R7C
10k
10k
DESIGNATED COMPONENTS IN WHICH SAFTETY CAN BE OF
SPECIAL SIGNIFICANCE WHEN REPLACING A COMPONENT
IDENTIFIED WITH
B
A
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
!
.
R2B
R2A
7k5
R8A
10k
R8B
C1
2200uF
10k
C2
2200uF
7k5
R2C
7k5
V+
BR RECT
RS604
LED1/2 Preamp
LED1/2 Preamp
R14
3k3
CZ
100nF
CW
NOT USED
LIVE
QUICK FIT TERMINAL
2of2
SPK 1
QUICK FIT TERMINAL
SPK 2
QUICK FIT TERMINAL
On Faceplate
SW SPST
C add 10nF
!
30713
a
!
70153
80130
!
Power Cord
I
H
G
F
E
D
C
B
A
Loading...