Bose Acoustimass 3 - INTEGRATED CIRCUIT DIAGRAMS

23
INTEGRATED CIRCUIT DIAGRAMS
14
13
12
11
10
9
8
12
3
4
56
7
NPN
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
Quad Transistor Array, NPN
P/N 145317 (MPQ3904)
Main PCB Assembly
U1
Dual Operational Amplifier, DIP-8
P/N 108568 (RC 4559)
Main PCB Assembly
U2, U3, U5, U6, U101-105
1
2
3
4
5
6
7
8
A Output
A -Input
A +Input
V
+
B Output
B -Input
B+Input
V
_