BOSE SD262088 Schematic
A
BCD EFGH
CHANNEL 2
MASTER
LEVEL
RT720
1
5K
3 1
CW
4
P700
1
-15V
+15V
Sig Com
Ch2 Master
VCA 5V
Sig Com
2
Ch1 Master
VCA 5V
POWERGND
POWERGND
Comunication Alert
Clipping Ch#2
Display Ch#2
Clipping Ch#1
Display Ch#1
Signal Presence 1
Amplifier on
Signal Presence 2
Protect
Thermal
-15V
2
+15V
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
3
4
5
2
5
COM/ALERT
CHANNEL 1
MASTER
LEVEL
RT710
5K
3 1
CW
2
4
+15V
-15V
5
C703
10/35V
C704
10/35V
C705
10/35V
C706
10/35V
C707
10/35V
C708
10/35V
COM/ALERT
1
1
CHANNEL 2
D701
YELLOW
D702
YELLOW
D703
YELLOW
D704
GREEN
D705
GREEN
D706
YELLOW
-6dB
D707
YELLOW
-12dB
D708
YELLOW
-20dB
E607
E606
Presence
R718
Open
R719
Open
R721
Open
CHANNEL 2
Signal
Amplifier
On
Protect
Thermal
Clipping
D700
YELLOW
Communications / Alert
CHANNEL 1
D709
YELLOW
D710
YELLOW
D713
YELLOW
D714
GREEN
D715
GREEN
CHANNEL 1
D711
YELLOW
-6dB
D712
YELLOW
-12dB
D716
YELLOW
-20dB
Signal
Presence
Amplifier
On
Protect
Thermal
Clipping
+15V
C700
1/50V
+15V
R700
150K
1/4W
5% CF
R701
12.1K
R702
1.50K
R703
12.1K
R706
100K
R704
22.6K
U700:A
3
+
2
-
R705
U701:B
12.1K
5
+
6
-
U701:A
3
+
2
-
CHANNEL 2
R720
Open
BA4560
-15V
4
8
+15V
BA4560
BA4560
-15V
4
8
+15V
D717
1
+15V
R713
12.1K
R714
100K
R715
22.6K
U700:B
BA4560
5
+
7
6
-
U702:B
BA4560
5
+
7
6
-
U702:A
BA4560
-15V
3
4
+
1
2
-
8
+15V
D719
CHANNEL 1
D720
R717
7.5K
1/4W
5% CF
R716
7.5K
1/4W 5% CF
2
3
R710
12.1K
1
R707
7.5K
1/4W 5% CF
D718
7
R708
7.5K
1/4W
5% CF
1
C701
1/50V
R711
1.50K
R709
150K
1/4W
5% CF
R712
12.1K
4
5
Notes; Unless otherwise noted
1. Resistors are in 1/8W 1% metal film, in Ohms.
Capacitance in uF.
Diodes are 1N4148.
6
A
B
G r o u n d i n g S y m b o l K e y
C
C h a s s i s G n d
I n p u t G n d
P o w e r G n d
Model 2150 Amplifier
6
Display PCB
Part Number 262088
Service Manual Part Number 216306 Rev. 00
D
E
F
G
Sheet 1 of 1
H
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