BOSE SD187923 3 06 Schematic
8
7
6543 1
2
C
M178
M179
J7
+40VP1
1
2
3
4
5
6
7
8
9
10
11
12
10/35V
M191
C500
R503
1.0K
M193M192
R500
100K
R501
100K
P1
M181M180
M69
+20VP1
M190 M187M182
M183 M184
+12VP1
-12VP1
M186M185
F
MTS15
M188
M189
-12VP1
C518
10/35V
M67
+12VP1
3
2
4
8
U503
1
-20VP1
-40VP1
P1
TP97
65
NJM311
C533
0.1
M65
7
C532
+12VP2
MTS16
F
-12VP2
+20VP2
M207
3
2
C513
OPT
M68
C534
P2
OPT
TP104
8
Z
OPT
R517
7
U502
NJM311
OPT
65
1
4
M66
-20VP2
-40VP2
C535
OPT
P2
+12VP2
-12VP2
C511
OPT
C506
R518
OPT
OPT
P2
P2
M210
M72
+12VP2
R543
OPT
R529
OPT
C512
OPT
CHANNEL TWO
CLASS-G POWER
AMPLIFIER MODULE
ALL PARTS OPTIONAL
D503
136603
OPT
C510
OPT
P2
C509
OPT
R530
OPT
P2
D510
136603
OPT
R545
OPT
D511
MMBD914
OPT
R569
OPT
Z
TP106
R527
OPT
C522
R526
OPT
OPT
R519
R520
OPT
OPT
Q507
2SA608
OPT
R521
OPT
R522
OPT
Q506
+20VP2
2SC536
R525
OPT
OPT
P2
2
IN-
3
IN+
4
IN+MUTE
9
STBY
10
MUTE
11
NC2
R549
OPT
R546
OPT
C523
OPT
P2
R524
OPT
R528
OPT
12 7 13
NC3 +VS +PWVS
STBYGND
P2
Q509
2SA608
OPT
R547
OPT
R560
OPT
+40VP2
U501
TDA7294
OPT
-VS
-40VP2
R548
OPT
Q510
2SC536
OPT
R561
OPT
R523
OPT
R550
OPT
R515
M195
M196
J8
C505
+40VP2
1
2
3
4
5
6
7
8
9
10
11
12
OPT
R514
OPT
OPT
R516
OPT
P2
M197
M204 M206 M199
M198
M200 M201
M203 M202
M70
M208 M209
M74
M205
D500
9.1V/225mW
BTSTRAP
-PWVS
1581
Z
D508
9.1V/225mW
C502
.01
C520
.01
OUT
NC1
+40VP1
14
6
5
-40VP1
Q502
TIP146T
D502
187479
C504
1000pF
C514
10/35V
C519
1000pF
D509
187479
Q505
TIP141T
+20VP1
D530
257661
D531
257661
-20VP1
P1
J501
L500
OPT
P1
R542
OPT
1W
R541
10
1W
C521
0.1
P1
C530
TP103Z
100pF
R568
5.9K
P1
OPT
2.49K
R535
20K
CHANNEL ONE
CLASS-G POWER
AMPLIFIER MODULE
C503
10/35V
P1
R532
C515
1000pF
10.0K
136603
C517
1000pF
P1
D507
136603
R567
D501
TP99
R531
49.9K
R565
47.5K
D515
MMBD914
R506
R505
1.0K
10.0K
Q501
2SA608
R507
1.0K
R508
220
1W
Q500
+20VP1
2SC536
R509
100K
R510
10.0K
Z
R533
2.49K
R536
100K
C529
10/35V
P1
10
11
C528
10/35V
2
3
4
9
R512
1.0K
P1
ININ+
IN+MUTE
STBY
MUTE
NC2
R537
1.0K
R534
49.9K
STBYGND
Q503
2SA608
R511
6.81K
Z
TP100
+40VP1
12 7 13
NC3 +VS +PWVS
U500
TDA7294
-VS
-40VP1
P1
TP101
R539
6.81K
R540
220
R538
1W
1.0K
Q504
2SC536
R563
R564
1.0K
10.0K
0.1
P1
Z
R502
1.0K
C501
10/35V
P1
C516
10/35V
P1
M194
+12VP1
R504
20K
M71
-PWVS
C507
OPT
TP107
Z
9.1V/225mW
BTSTRAP
1581
9.1V/225mW
Z
TP109
C524
OPT
D504
OUT
NC1
OPT
D512
OPT
+40VP2
14
6
5
-40VP2
TIP146T
Q508
OPT
D505
187479
OPT
C508
OPT
OPT
C527
C525
OPT
D513
187479
OPT
Q511
TIP141T
OPT
+20VP2
D532
257661
D533
257661
-20VP2
DD
P2
L501
J502
OPT
OPT
R562
P2
OPT
R571
OPT
Z
TP110
C526
C531
OPT
OPT
P2
R570
OPT
P2
C
TS17
+40V
D601
R604
F
D600
187479
+20V
TS18
F
TS19
RELAY
F
TS20
F
-40V
-20V
C610
4700
C611
4700
M211
U600
R602
5.1
1/4W
R603
1/4W
5.1
1
IN
2
IN OUT
LM7812
GND
GND
LM7912
U601
OUT
2
1
3
3
C612
10/35V
C613
10/35V
+12V
-12V
C614
0.1
C615
0.1
0
+20V
-20V
+12V
G5
R607
D603
1.0K
C620
R608
100K
R606
9.09K
MMBD914
TP121
Z
2
0.1
Q600
MMBT3904
Z
TP122
6
191928
K600
5
Q601
MMBT3904
-12V
FRAMINGHAM, MA 01701-9168
TM
R
AmPlus 50 Amplifier
B
A
C618
0.1
191928
K600
M111M110
F602
4.0A
Slo-Blo
191928
K600
13
C619
0.1
24
GBU6B
100V,6A
F601
Slo-Blo
4.0A
B
C602
0.1
Y-caps
LIVE
M75
C600
OPT
C601
G6
OPT
M76
F600
VR600
J605
J603
120V JUMPER CONFIGURATION
J606
J603
J605 J606
J601J601
BOSE P/N 187985
BLK
J601
1
WHT
2
ORG
3
4
BRN
5
RED
BOSE P/N 187985
BLK
BLUE
YEL
WHT
ORG
GRAY
BRN
YEL
RED
BLUE
BLUE
YEL
GRAY
YEL
BLUE
J602
1
2
3
4
5
M105
M106
M107
M108
M112
0.1
C603
C617
0.1
C616
0.1
M113
120V ~
L
CHASSIS
GND.
E
IFC POWER
RECEPTACLE
220-240V ~
C1
1000pF
C2
J603
1000pF
J605
POWER SWITCH
J606
N
A
220-240V JUMPER CONFIGURATION
J600
1
2
BLK
WHT
ORG
BRN
RED
BOSE P/N 187985
NEUTRAL
BLUE
YEL
GRAY
YEL
BLUE
170214
170214
B601
B600
GBU6B
100V,6A
M109
C604
0.1
C605
0.1
C608
0.1
C609
0.1
C606
4700
C607
4700
187479
M80
G5
R600
10.0K
R601
10.0K
PCB 187923-001, 2
Service Manual P/N: 194101 Rev. 00
2345678
Rev. 5 Sheet 3 of 3
1
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