Bose Lifestyle PS 28 - Integrated Circuit Diagrams; S;PDIF Receiver and Audio Codec Diagrams; Amplifier and Comparator Diagrams

26
PS18/28/35 Troubleshooting Guide
OUTPUT (2)
OUTPUT (1)
IN+ (1)
IN- (1)
GND
IN- (2)
IN+ (2)
-Vs
MUTE
+Vs
-Vs
Pin
Connection
1 Output 2
2 Output 1
3V+
4INPUT1-
5INPUT1+
6INPUT2-
7INPUT2+
8INPUT3-
9INPUT3+
10 INPUT 4-
11 INPUT 4+
12 GND
13 OUTPUT 4
14 OUTPUT 3
LM339, voltage comparator
part number 187618-001
TDA7265, power amp, 2 x 25W
part number 256084-001
CS8415A, SPDIF receiver
part number 254193-001
Integrated Circuit Diagrams
1
2
3
4
5
6
7
8
9
11
12
13
14
10
1A
1B
1Y
2A
2B
2Y
GND
Vcc
4B
4A
4Y
3B
3A
3Y
And gate, quad 2-input, CMOS
part number 256124-001
Truth Table
ABY
LLL
LHL
HLL
HHH