Integrated Circuit Diagrams - Bose ACOUSTIMASS 3 Manual

INTEGRATED CIRCUIT DIAGRAMS

14 13 12 11
NPN
1 2 3
4
A Output
A -Input
A +Input
_
V
10 9 8
5 6 7
Quad Transistor Array, NPN
P/N 145317 (MPQ3904)
Main PCB Assembly
U1
1
2
3
4
Dual Operational Amplifier, DIP-8
P/N 108568 (RC 4559)
Main PCB Assembly
U2, U3, U5, U6, U101-105
23
Pin
1 Collector
2 Base
3 Emitter
4 No Connection
5 Emitter
6 Base
7 Collector
8 Collector
9 Base
10 Emitter
11 No Connection
12 Emitter
13 Base
14 Collector
+
V
8
B Output
7
B -Input
6
B+Input
5