BOSE SD262085 Schematic

A BCD EFGH

Line Filter

1

IEC POWER

CONNECTOR

GRN/ YEL CONDUCTOR

ATTACHED TO DEDICATED

L

E

N

CHASSIS STUD

2

3

Connections to

Power Amp Assy

CH1 Output

+

-

TRANSFORMERS SHOWN

FOR REFERENCE ONLY.

(NOT ON CIRCUIT BOARD)

4

Connections to

Power Amp Assy

+

CH2 Output

-

BRN

BLU

GRN/YEL

Load

Line

GRN/YEL

TERMINALS STACKED ON
CHASSIS STUD

Wires from

Switch Board

Assy 9000.0439.01

Audio Output

T601

VIO

GRN

BLK

WHT/ BLK

WHT/ BLK

T602

VIO

GRN ORG

BLK

WHT/ BLK

WHT/ BLK

XFMR

Audio Output

XFMR

BRN

BLK
BRN
RED
GRY

Wire Harness

From Interface

Assy 9000.0445.xx

YEL

BRN

ORG

BLU

RED

WHT

YEL

BRN

BLU

RED

WHT

BLU

WL100

WL101

WL102

.1/ 250VAC

WL103

WL104

WL105

J100

F100

C101

2

POWERUP

1

WL138

(Not Used)

WL137

WL136

WL135

WL134

WL133

WL132

WL131

WL130

WL139

WL128

WL127

WL126

WL125

WL124

WL123

WL122

WL121

WL129

WL120 (Not Used)

C100

.1/ 250VAC

Q100

BTA41-700

A1

1

R101

1K

F100 Value

Model 120V

G3

AC Input / Speaker Output

240V

8A TM2150

4A T

R102

18 1/2W

A2

2

R103

8.2 Ohm 1/2W

46

1

2

U100

PS7341-1A

WL106

WL107

WL112

WL108

WL109

WL110

WL113

WL111

J102

8
7
6
5
4
3
2
1

J101

8
7
6
5
4
3
2
1

Channel 1 Output

100V
70V
50V
35V
25V
8 Ohm
4 Ohm
COMMON

Channel 2 Output

100V
70V
50V
35V
25V
8 Ohm
4 Ohm
COMMON

TRANSFORMER SHOWN
FOR REFERENCE ONLY

(NOT ON CIRCUIT BOARD).

100V TRANSFORMER

CONNECTION

BLK

RED

BLK/ YEL 100V

BLK/ WHT 115V

BRN

BRN/ YEL 100V

BRN/ WHT 115V

YEL

THERMAL SW

110C

VIO

RED/ YEL WL403

YEL

RED

Connections to
AC Input Assy

WL106

WL107

WL112

WL108

WL109

WL110

WL113

WL111

Connections to
AC Input Assy

WL106

WL107

WL112

WL109

WL108

WL110

WL113

WL111

Connections to

Rectifier Assy

WL400

WL401

WL402

WL405

WL404

120V TRANSFORMER

CONNECTION

BLK

WHT

230V TRANSFORMER

CONNECTION

BLK

BLK/ YEL 100V

BLK/ WHT 115V

BRN

BRN/ YEL 100V

BRN/ WHT 115V

THERMAL SW

110C

THERMAL SW

110C

RED/ YEL

RED/ YEL

1

2

Connections to

Rectifier Assy

RED

YEL

VIO

YEL

RED

RED

YEL

VIO

YEL

RED

WL400

WL402

WL405

Connections to

Rectifier Assy

WL400

WL402

WL405

WL401

WL403

WL404

WL401

WL403

WL404

3

4

5

5

NOTES

Unless otherwise noted:

1. Resistors are 1/8W, in Ohms;
Capacitors in uF;
Diodes are 1N4148.

G r o u n d i n g S y m b o l K e y

6

Denotes critical components.
Replace with identical Bose parts only.

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

Service Manual Part Number 216306 Rev. 00

A

B

C

D

E

F

G

Model 2150 Amplifier

AC Input/Output PCB
Part Number 262085

Sheet 1 of 1

H

6