BOSE SD262086 Schematic
A
BCD EFGH
1
Remote Level
Control Port
2
Channel # 2
Effects Loop
3
4
Configuration Switches
CH1 Filter Frequency Closed: 120Hz Open: 80Hz
CH1 Effects loop control Closed: On Open: Off
CH2 Filter Frequency Closed: 120Hz Open: 80Hz
5
Channel # 1
Effects Loop
Remote
Sequencing
CH1 High Pass Filter Closed: OUT Open: IN
CH1 Clip Limiter Closed: On Open: Off
CH2 High Pass Filter Closed: OUT Open: IN
CH2 Clip limiter Closed: OUT Open: IN
CH2 Effects Loop Closed: OUT Open: IN
RTN
+5V
Send
Send Com
Rcv Com
Rcv
Send
Send Com
Rcv Com
Rcv
ESD/ EMI RETURNS
DIRECT TO CHASSIS
GND
SEND
RCV
C2
C1
*
J802
J803
J804
J801
9
10 7
11
12 5
13
14 3
15
16 1
1
2
3
4
1
2
3
4
1
2
3
4
1
2
3
S801:H
S801:G
S801:F
S801:E
S801:D
S801:C
S801:B
S801:A
C802
330PF
C801
330PF
C806
*
330PF
R804
*
C805
*
1.02K
330PF
1% MF
C810
330PF
R808
C812
1.02K
330PF
1% MF
8
6
4
2
C804
330PF
C803
330PF
*
330PF
C811
330PF
SEND
RCV
C807
10 Ohm (F)
R801
R802
*
1% MF 1% MF
121
R805
*
1.02K
1% MF
R806
1% MF
121
R809
1.02K
1% MF
*
330PF
*
121
C808
330PF
R807
121
C813
R803
C809
*
100PF
1% MF
C814
100PF
SND2COM
SND2HOT
RCV2NEG
RCV2POS
SND1COM
SND1HOT
RCV1NEG
RCV1POS
5VEXT
POWERUP
REM_VCA_CH2
REM_VCA_CH1
PWRGND
SW1:EFL2
SW2:HPF2
SW3:FREQ2
SW4:CLC2
SW5:CLC1
SW6:FREQ1
SW7:HPF1
SW8:EFL1
+15V
Cable to Signal Processor
P801
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
+15V
2N4403
SEND
RCV
R810
200 (F)
1/4W
R811
100 (F)
1/4W
G r o u n d i n g S y m b o l K e y
D803
Q801
D804
D805
R812
15k
1/4W
R818
68K
1/4W
R819
150K
D801
C815
100/25V
R813
47K
D802
C817
100/25V
C816
0.1
R815
10K
R814
10K
Q802
2N4401
D806
D807
Q803
2N4403
NOTES
Unless otherwise noted:
1. Resistors are 1/8W 5% Carbon Film, in Ohms;
Capacitors in uF;
Diodes are 1N4148.
2. Component Usage
Components marked " " are not used in
1 channel models.
1
2
3
R816
51
R817
270
Cable to AC Input/
Output Assy
P802
POWERUP
1
2
4
*
5
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
6
Model 2150 Amplifier
6
Interface PCB
Part Number 262086
Service Manual Part Number 216306 Rev. 00
A
B
C
D
E
F
G
Sheet 1 of 1
H
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