BOSE SD195178 01 04 Schematic
C
B
A
8
+12V
DIFF AMP
C101
R101
10
LEFT INPUT
C102
R102
10
R143
100K
1
(FRONT VIEW)
J5
TCS4450
M32
M
321
54
M
M34
M36
R401
100
M
M35
M
1
M
M33
C420
270P
1
1K
C124
.0033
1K
C125
.0033
Z3
-12V
R141
N.U.
R241
N.U.
R103
1K
Z
Z23
-12V
C103
1
C130
100P
+12V
Z
Z24
R104
1K
D102
BAV99L
R140
N.U.
Z4
-12V
R305
N.U.
R304R303
N.U.N.U.
1
C302
N.U.
CW
641
1
Z
Z
R240
N.U.
Z
Z26
+12V
DIFF AMP
C201
R201
10
R337
100K
1
RIGHT INPUT
C202
R202
10
R243
100K
Z34
1
+12V
R449
N.U.
Z
Z46
Z
R402
1.5K
D401
MBAV70L
C415
.0033
2
TURN ON
+12V
R403
N.U.
Z
Z36
R417
1.0K
D403
M
C401
M41
.0033
2
1K
C224
.0033
1K
C225
.0033
R404
100K
1
1
D405
BAV99L
M39
M40
R203
1K
Z
Z25
C203
100P
Z
Z38
R204
1K
D202
BAV99L
M
M
2
-12V
C230
+12V
-12V
1
ANODE
2
CATHODE
NC
OPTOCOUPLER
Q401
2SC2812
BASS
R302
N.U.
Y4
U401
N.U.
Y5
D101
BAV99L
BIAS
C324
N.U.
D201
BAV99L
6
100P
5
R105
8.25K
1
C301
N.U.
R344
N.U.
ALPS RK14K121 DUAL POT
1
6
100P
5
R205
8.25K
1
C402
N.U.
BASE
COL
EMIT
C416
.0033
2
3
2
-
+
R309
2
3
-
+
5
43
C131
N.U.
R106
8.25K
1/2
+
-
N.U.
-
+
C231
N.U.
R206
8.25K
1/2
1/2
1/2
7
4559
U301
U101
4559
1
R301
N.U.
4559
U301
7
4559
U101
AUTO TURN-ON
D404
R450
N.U.
Z44
Z
Q411
M
M57
R107 R108
10K 147
R142
N.U.
MPQ3904
1
D301
N.U.
Z
Z5
LEVEL DETECT
1
M
M
M58
R207 R208
10K 147
R242
N.U.
N.U.
C403
N.U.
R451
N.U.
Q412
N.U.
N.U.
C132
N.U
FILM
C104
U403
M64
C232
N.U.
FILM
C204
U403
MPQ3904
7
1
47
47
1
1
3
1
N.U.
2
14
12
1
R109
N.U.
R113
ALPS RK14K121 DUAL POT
2
M43
M
C303
D302
N.U.
Z27
R209
N.U.
13
R405
N.U.
D413
N.U.
Z45
Z
R407
N.U.
TREBLE
5
CW
3
N.U.
2
R111 R112
C105
N.U.
11
COMPRESSOR
Z
Z7
R306
N.U.
M
M44
1
Z
C304
N.U.
2
TREBLE
6
CW
R113
4
N.U.
ALPS RK14K121 DUAL POT
1
R211 R212
C205
N.U.
COMPRESSOR
R408
N.U.
D420
N.U.
M
M
11
R110
N.U.
C106
N.U.
FILM
10.0K12.1K
2
-
1
1/2
3
+
R117 R119
10K
M
M55
C107 C108 C109 C110
.33
R138
N.U.
R307
N.U.
R308
N.U.
Q302
N.U.
R317
1
N.U.
-12V
R336
N.U.
Z
Z6
Z
Z8
R316
N.U.
Z47
Z
Q301
N.U.
M45
Q303
M46
N.U.
R310
DYNAMIC BASS EQUALIZER
R210
N.U.
R217 R219
R238
10K
N.U.
M
M56
C207 C208 C209 C210
JMPR N.U. N.U.
.33
R437
N.U.
6
MAIN
5
SUB
43
MAIN
R409
6
5
D415
N.U.
C206
N.U.
FILM
-
1/2
+
10.0K12.1K
7
TL072
U102
TRIAC DRIVER
U402
1
ANODE
2
CATHODE
NC
MOC3063T
N.U.
6543 1
M51
M
R132R131
JMPR
FILM
R130
N.U.
JMPRN.U.
C119C118
N.U.
FILM
R133 R134
N.U. N.U.
EQ3
C120
N.U.
FILM
1
U104
N.U.
+
1
1/2
-
EQ2
R327 R328
N.U. N.U.
R326
N.U.
1
JMPR
FILM
R230
N.U.
BLACK
WHITE
ORANGE
BROWN
RED
R232R231
JMPRN.U.
C219C218
N.U.
FILM
C316
N.U.
FILM
R233 R234
N.U. N.U.
XFMR P/N 196196
1
EQ3
C317
N.U.
FILM
6
-
1/2
5
+
M
M65
C220
N.U.
FILM
R325
N.U.
C315C314
N.U.
N.U.
FILM
FILM
R346
N.U.
M
M62
M52
M
1
U104
N.U.
5
+
7
1/2
6
-
J7
M
M1
1
M
M2
2
M
M3
M4
M5
SIN SHENG M1135
3
M
4
M
5
DENOTES CRITICAL COMPONENT.
REPLACE ONLY WITH IDENTICAL BOSE PART.
REFER TO SERVICE MANUAL FOR BOSE PART NUMBER.
F1:
P/N 143668-3000 (120V/MIL) 3.0A
N.U.
U304
1
M61
7
BLUE
YELLOW
GRAY
YELLOW
BLUE
M
M49
Z28
1
R335
N.U.
7
C322C321
N.U.
FILM
R334
N.U.
M50
EQ3
M
Z
R135 R136
330 330
C122
.0033
1
R329
N.U.
Z
Z10
C318
N.U.
1
R330
N.U.
M
M42
3
+
1
1/2
2
-
N.U.
U304
Z37
Z
R236
R235
330
330
C222
.0033
1
U403
MPQ3904
THIS DRAWING IS BASED ON
P-CAD DATA ALL CHANGES
MUST BE MADE USING THE
P-CAD FILES ATTACHED TO
MD198604.
2
-
1/2
3
+
N.U.TL072
U105U102
C121
N.U.
CD
M
M59
M
R333
N.U.
N.U.
FILM
1
6
-
1/2
5
+
N.U.
U105
C221
N.U.
CD
M
M60
1
1
4
3
J1
SHT 2
5
2
THIRD ANGLE PROJECTION
+12V
+12V
D406
ON MUTE
R413
12.1K
R418
100K
C405
R414
100
10K
2
Z41
OFF MUTE
8
9
10
1
U403
1
R416
100K
2
C426
100P
R455
36.5K
Q406
2SC2812
+12V
Z
Z13
R434
2.0K
7
6
5
MPQ3904
R436
2.0K
2 2
R426
Z15
M76
R425
1K
Q407
2SA1179
20K
M
Z
Z
LEVEL
3
UNLESS OTHERWISE SPECIFIED INTERPRET
THIS DRAWING PER ANSI Y14.5M-1982
NOTICE
BOSE CORP PROPRIETARY RIGHTS ARE
INCLUDED HEREIN. THIS INFORMATION MAY
NOT BE COPIED.TRANSFERRED OR DISCLOSED
EXCEPT AS AUTHORIZED BY BOSE CORP
2
1
NDI 00
.33
N.U.
R410
Q400
BTA06
R411
R121R120
JMPR
M
C112
(NOT USED)
FILM
2
-
1/2
3
+
EQ1
M
M63
C309 C310
1
N.U.
N.U.
FILM
U303
M53
1
4559
U103
R319
N.U.
N.U.
FILM
R321
N.U.
R320
N.U.
1 1
R123
JMPR
N.U.
FILM
R128 R129
N.U. N.U.
1
EQ1
U302
N.U.
N.U.
R118
N.U.
1
N.U.
FILM
R116
30.1K
1
-12V
5
3
+
2
-
N.U.
+12V
R313
N.U.
1
R311
N.U.
C307
N.U.
FILM
C306
N.U.
FILM
1
C111
N.U.
N.U.
FILM
R114
R115
JMPRJMPR
R318
N.U.
C319
.1
1
4
6
7
C320
.1
1
R312
N.U.
2
-
1/2
3
C308
+
N.U.
Z9
Z
R314
N.U.
R315
N.U.
11
R221R220
M
M
25
JMPR
C212
(NOT USED)
FILM
6
-
1/2
5
+
EQ1
M6
M7
Y6
S1
N.U.
MARQUARDT ROCKER SWITCH
ON OFF
21
M M
M9 M8
4559
U103
7
M
M54
R223
JMPR
N.U.
FILM
R228 R229
N.U. VAR
1
NOT
USED
115V 230V
C&K V802-12-MA-08-Q
S2
S2
C&K V802-12-MA-08-Q
115V 230V
N.U.
N.U.
R214
R412
39
1/4W
N.U.
FILM
AC IN
NEUTRAL
F1
3.0A
SLO-BLO
1
C211
N.U.
R215
JMPRJMPR
J6
1
2
HOT
Z48
R456
Z
R218
N.U.
1
.33
FILM
R216
30.1K
1
120VAC
100
321
Y2 Y3
C404
.0047
CD
330
1
C114C113
N.U.
FILM
R139
N.U.
1
C311
N.U.
FILM
R324R322 R323
N.U.N.U. N.U.
C312 C313
N.U.
FILM
C214C213
N.U.
FILM
R239
N.U.
Y1
3216
654
N.U.
R126 R127
N.U. JMPR
C115 C116
JMPR
FILM
R125R122
N.U.JMPR
R124
N.U.
EQ2
N.U.
FILM
1
R226 R227
N.U. JMPR
1
C215 C216
JMPR
FILM
R225R222
N.U.JMPR
R224
N.U.
1
R332
N.U.
C117
N.U.
5
6
C217
N.U.
N.U.
FILM
+
-
N.U.
FILM
EQ2
1/2
R331
N.U.
N.U
U303
3
2
7
DWG NO.CLASS
SD
+40V
Z30
Z
2
C429
N.U.
2
Z
Z14
D421
D402
D414
R430
1M
2
PEAK
LEVEL
DETECT
R435
20K
C410
2.2
1
NOTES:
UNLESS OTHERWISE SPECIFIED:
1. ALL RESISTORS ARE EXPRESSED IN OHMS.1/10W (SHT.1),1/8W (SHT. 2 SMD)
2. ALL CAPACITORS ARE EXPRESSED IN MICROFARADS.
3. ALL UNPOLARIZED CAPACITORS ARE CERAMIC CHIPS.
4. ALL DIODES ARE 1N4531 UNLESS OTHERWISE NOTED.
6. THIS NOTE HAS BEEN REMOVED.
7. 4559 PIN 4= -12V, PIN 8= +12V.
8. LM339 PIN 3= +12V, PIN 12= -12V.
9. TL072 PIN 4= -12V, PIN 8= +12V.
10. THIS NOTE HAS BEEN REMOVED.
11. THIS NOTE HAS BEEN REMOVED.
12. THIS NOTE HAS BEEN REMOVED.
DRAFTER
195178
01
ECN-24966:UPDATE,VALUE CHANGES.
02
ECN-25188:UPDATE,VALUE CHANGES.
ECN-25558:UPDATE,VALUE CHANGES.
03
ECN-26949:UPDATE,VALUE CHANGES.04
R415
100K
Z40
Z
Q403
2SC2812
Z
Z12
Q404
2SC2812
R421
100K
R422
1K
R429
C408
100K
1
R428
20K
Z
Z16
Q408
2SC2812
BAV99L
Z
D411
M77
M
C409
10
2
R431
100K
2
Z
Z31
R433
10K
DENOTES TEST POINTS FOR M.E.T.S.5.
Z17
AMPLIFIER DC OFFSET
LATCH-OFF PROTECT
+40V
Q410
2SA1179
M
M74
R448
14.3K
2
BAV99L
2
BAV99L
M
+12V
2
2.00K
R432
D410
BAV99L
Z
Z19
Z11
C428
.001
Z
2
11
DATE
Z
Z20
CHECKER
ENGINEER
SAFETY ENGINEER
REL TO PROD PER
AT REV
2345678
SH
+12V
R419
10K
Q405
2SC2812
2
+12V
R420
10K
C418
7
+
.0033
1/4
6
-
R457
100K
10
C427
+
5
1/4
-
4
R458
100K
2
2
COMPRESSOR
DETECT
Z18
Z
D412
R439
1.00K
R438
MBAV70L
196
+12V +12V +12V +12V
C411
C126
2.2
.033
M
M75
1
TITLE
D
1
REVISIONS
2
1
+40V
+12V
-12V
R423
100K
R149
200K
D407
1
2
C223
C123
CIRCUIT
.033
.033
R459
1K
R460
1K
SHORT
MUTE
D416
9.1V
Z21
Z
Z
C128C127
.033.033
R249
200K
+12V
2
1
M
M28
R237
10
M
M29
R137
10
Z22
C129
.033
R424
LM339
U404
U404
LM339
1M
SAFETY CONTROLLED
FRAMINGHAM, MA 01701-9168
PC BOARD, JUKE BOX, ZONE2
PCB 198604
FSCMSIZE
32108
N A
CAT. CODE
SD
*SCALE
M
M10
1
J8
M
M11
2
J8
M
M12
3
M
M69
M
M78
M
M67
M
M66
M
M68
M
M70
M
M72
J8
M
M13
4
J8
M
M14
5
J8
M
M15
6
J8
M
M16
7
J8
M
M17
8
J8
M
M18
9
J8
M
M19
10
J8
M
M20
11
J8
M
M21
12
J8
M
M22
13
J8
M
M23
14
J8
C413C412
.1.1
1
M
M24
3
J9
M
M25
4
M
M
M
M26
1
J9
M27
2
M
-12V -12V -12V -12V
C229
C226
.033
1
C228
.033
.033
195178
SHEET 1 OF 2
1
DATEENGCHKREV DESCRIPTION
BASS OUT
LEFT OUT
RIGHT OUT
AUDIO GND
MUTE
THERMAL
+40V IN
+12V IN
-12V IN
BASS OFFSET
L SPKR + IN
L SPKR - IN
R SPKR + IN
R SPKR - IN
R SPKR OUT
M30
L SPKR OUT
M31
C227
.033
R
DD
C
B
A
REVDWG NO.CLASS
04
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