![background image](http://html.mh-extra.com/html/jbl/powerbass-pb12/powerbass-pb12_service-manual_639678019.webp)
PB12
19
Integrated Circuit Diagrams
U1,U2 (LM324, TLO64))
2
Base
3 Collector
1 Emitter
1
2
3
Q10,Q11 (MPSA56)
2
Base
3 Collector
1 Emitter
1
2
3
Q12 (2N4401)
0
0
2
2
7
D
S
G
N-Chan JFET
Q1 2N5457
+6V
15
16
17
V+
1
+6V
2
V+
3
18
4
O/P
19
5
O/P
20
6
V-
V-
21
7
22
8
SD 24
+15V 23
9 +15V
10 SD
FR 25
11 FR
I/P 26
12 I/P
GND 27
13 GND
-15V 28
14 -15V
00228
NOTE: THE FOLLOWING PROCEDURES MUST BE
FOLLOWED WHEN INSTALLING NEW S53AMI/S64AMI
AMP MODULES:
FAILURE TO FOLLOW ONE OR MORE OF THESE STEPS
MAY RESULT IN THE INSTANT DESTRUCTION OF THE
MODULE WHEN POWERED UP.
1.
Align white indent marker on Amp Module with indent
marker on main PCB; alternately observe position of label
on top of the module; incorrectly replacing the Module
180° in the PCB slot will result in its destruction.
2.
All AC powered test instruments (meters, oscilloscopes,
etc.) must have a floating ground, i.e., be connected to an
isolation transformer.
3.
Align and position the Amp Module before soldering.
4.
Attach the amp Module with the mounting screws before
soldering or powering up.
5.
Use only rosin-core or non-acid core solder; thoroughly
de-flux the surfaces after soldering.
If the new S53AMI/S64AMI Amp Module has larger mounting
hole(s) in the case, and the stock screws no longer will fit,
and screws of the proper type cannot be obtained locally
order:
(2) part# 60301S (screws)
(2) part# 60301N (nuts)
S53AMI/S64AMI -
Power Amp module SAFETY PART
Содержание PowerBass PB12
Страница 3: ...PB12 3 SAFETY INFORMATION ...
Страница 4: ...PB12 4 BASIC SPECIFICATIONS PB12 Subwoofer ...
Страница 5: ...PB12 5 DETAILED SPECIFICATIONS PB12 Subwoofer ...
Страница 20: ...PB12 20 Testing Procedure ...
Страница 21: ...PB12 21 Integrated Circuit Diagrams Cont ...
Страница 22: ...PB12 22 Integrated Circuit Diagrams Cont ...
Страница 23: ...PB12 23 PB12 Electrical Parts List PB12 POWER AMP PCB Version 6 3 7 0 Part Designator Description ...
Страница 26: ...PB12 26 PB12 Electrical Parts List Cont PB12 PREAMP section of PCB Version 6 3 7 0 Part Designator Description ...
Страница 27: ...PB12 27 PB12 Electrical Parts List Cont PB12 PREAMP section of PCB Version 6 3 7 0 Part Designator Description ...
Страница 32: ...PB12 32 PB12 PCB s version 6 3 ...
Страница 33: ...PB12 33 PCB s version 6 3 Cont ...
Страница 34: ...PB12 34 PCB s version 6 3 Cont ...
Страница 35: ......
Страница 36: ......
Страница 37: ......
Страница 38: ......
Страница 39: ......
Страница 40: ......