BOSE 250904 Schematic
5
5
4
4
3
3
2
2
1
1
D D
C C
B B
A A
C38
0.1uF
C101
2.2uF
16V
TANT
+
R200
10.0K
R183
0-ohm
R182
NU
R181
4.99K
R143
47.5K
U141A
NJM4565A
3
2
1
-
+
RN1C
6.34K
3 6
RN1B
6.34K
2 7
RN1A
6.34K
18
RN1D
6.34K
4 5
U111A
SSM2135
3
2
1
+
-
U111B
SSM2135
5
6
7
+
-
RN2D
6.34K
4 5
RN2A
6.34K
18
RN2C
6.34K
3 6
RN2B
6.34K
2 7
C115
120pF
C116
2200pF
C39
2.2uF
1206
R116
6.34K
R118
150
C114
120pF
R111
47.5K
R114
6.34K
R115
6.34K
R117
150
C30
0.1uF
C29
0.1uF
R102
10.0K
R103
8.25K
RN3A
6.34K
18
RN3C
6.34K
3 6
RN3B
6.34K
2 7
RN3D
6.34K
4 5
C25
2.2uF
1206
C22
2.2uF
1206
C36
2.2uF
1206
C26
2.2uF
1206
C23
2.2uF
1206
U101B
SSM2135
5
6
7
+
-
RN4D
6.34K
4 5
RN4A
6.34K
18
RN4C
6.34K
3 6
RN4B
6.34K
2 7
C162
120pF
C43
0.1uF
R144
47.5K
C121
2.2uF
16V
TANT
+
C111
2.2uF
16V
TANT
+
R164
47.5K
C163
2200pF
C164
560pF
C131
2.2uF
16V
TANT
+
U161A
NJM4565A
3
2
1
-
+
C161
120pF
C174
560pF
C172
120pF
R163
47.5K
U161B
NJM4565A
5
6
7
-
+
C24
220uF
6.3V
TANT
20%
+
R174
47.5K
C173
2200pF
U171B
NJM4565A
5
6
7
-
+
U171A
NJM4565A
3
2
1
-
+
C171
120pF
C125
120pF
C126
2200pF
R173
47.5K
C141
120pF
R126
6.34K
R128
150
C124
120pF
R121
47.5K
R124
6.34K
R125
6.34K
R127
150
C134
120pF
C135
120pF
C136
2200pF
R137
150
R136
6.34K
R138
150
C154
560pF
C152
120pF
U190
CS4222
AINL+
20
AINL-
19
AINR+
17
AINR-
16
AOUTL+
25
AOUTL-
26
AOUTR+
24
AOUTR-
23
DEM0
13
DEM1
18
SCL/CCLK
10
SDA/CDIN
11
AD0/CS*
12
RST*
27
SMUTE*
2
NC1
1
NC2
14
NC3
15
NC4
28
SDOUT
8
SDIN
9
LRCLK
4
SCLK
5
MCLK
3
AGND22DGND
7
+5A21+5D
6
R131
47.5K
R134
6.34K
R135
6.34K
R154
47.5K
C153
2200pF
C44
0.1uF
U121A
SSM2135
3
2
1
+
-
R193
0-ohm
R192
NU
U151A
NJM4565A
3
2
1
-
+
C151
120pF
C48
0.1uF
C47
0.1uF
C46
0.1uF
C45
0.1uF
U131B
SSM2135
5
6
7
+
-
U131A
SSM2135
3
2
1
+
-
U121B
SSM2135
5
6
7
+
-
R153
47.5K
U151B
NJM4565A
5
6
7
-
+
C8
0.1uF
C21
0.1uF
C3
0.1uFC20.1uF
R196
NU
R191
4.99K
C17
0.1uF
C16
0.1uF
C50
0.1uF
C49
0.1uF
R199 22.1
R194
4.99K
R195
NU
C54
0.1uF
C53
0.1uF
C52
0.1uF
C51
0.1uF
U101A
SSM2135
3
2
1
+
-
R198 22.1
R190 22.1
R197 22.1
C6
0.1uFC10.1uF
C56
0.1uF
C55
0.1uF
C10
0.1uFC70.1uF
C20
0.1uF
C15
0.1uF
R186
NU
C19
0.1uF
C14
0.1uF
C58
0.1uF
C57
0.1uF
C61
0.1uF
R187 22.1
C62
0.1uF
C60
0.1uF
C59
0.1uF
R188 22.1
R180 22.1
R189 22.1
C13
0.1uF
C11
0.1uF
C9
0.1uF
C4
0.1uF
C18
0.1uF
C5
0.1uF
U141B
NJM4565A
5
6
7
-
+
C142
120pF
C103
.001uF
C106
2200pF
R108
150
C104
120pF
C105
120pF
C32
0.1uF
R104
6.34K
R105
6.34K
R107
150
R106
6.34K
R109NUR110
NU
C41
0.1uF
C40
0.1uF
C35
0.1uF
C34
0.1uF
C27
0.1uF
R101
47.5K
C42
0.1uF
C28
0.1uF
R184
4.99K
R185
NU
C102
2.2uF
16V
TANT
+
C143
2200pF
C144
560pF
U180
CS4222
AINL+
20
AINL-
19
AINR+
17
AINR-
16
AOUTL+
25
AOUTL-
26
AOUTR+
24
AOUTR-
23
DEM0
13
DEM1
18
SCL/CCLK
10
SDA/CDIN
11
AD0/CS*
12
RST*
27
SMUTE*
2
NC1
1
NC2
14
NC3
15
NC4
28
SDOUT
8
SDIN
9
LRCLK
4
SCLK
5
MCLK
3
AGND
22
DGND
7
+5A21+5D
6
C37
2.2uF
16V
TANT
20%
+
C31
2.2uF
16V
TANT
20%
+
R130
NU
R129
NU
C33
0.1uF
C1AOUTR+
C1AOUTR-
C1AOUTL+
C1AOUTL-
C1AINL-
C1AINR+
C1AINR-
C1SMUTEn
VREF
VREF
C1AINL+
C1LRCLK
C1SDIN
C1SCLK
C1SDOUT
C2AOUTR+
C2AOUTR-
C2AOUTL+
C2AOUTL-C2AINL-
C2AINR+
C2AINR-
VREF
VREF
C2AINL+
C2LRCLK
C2SDIN
C2SCLK
C2SDOUT
CXRSTn
C2SMUTEn
CXRSTn
RGNDRGND
+15V
+5D
DGND
DGNDDGND DGND
DGND
DGND DGND
+5D
RGND
+15V
-15V
RGNDRGND RGND
+15V
-15V
AGND
+5A
RGND RGND
AGND
+5A
+5CD
+5CD
AGND
-15V
AGND
DGND
RGND
AGND
+5A
AGND
AGND
+5CD
AGND
+5CD
RGNDRGND RGND
+15V
-15V
RGNDRGND
RGND
+15V
-15V
AGND
+5A
AGND
+5CD
+5CD
AGND
+5CD+5A
AGND
+5A
AGND
AGND
+5CD
AGND
+5CD
AGND
AGND
AGND AGND
+5CD
+5A +5CD+5CD
+5A
+5CD
+5CD
C1MCLK
C1SDOUTF
C1SDINF
C1LRCLKF
C1SCLKF
C1AD0
C1SCL
C1SDA
CXRSTn
C2SDOUTF
C2LRCLKF
C2SCLKF
C2SDINF
C2MCLK
C2SCL
C2SDA
C2AD0
AIN1
AIN2
AIN3
AIN4
AOUT1
AOUT2
AOUT3
AOUT4
PLL, RST,
INV, PEROM,
SRAM
FPGA
C32
SSM2135
NJM4565
CODEC 2
CODEC 1
R
BOSE ENTERO SE 16 AUDIO PROCESSOR
SERVICE MANUAL PART NUMBER 256689
4 X 4 DIGITAL SIGNAL PROCESSOR (DSP) PCB
SHEET 2 OF 2
PART NUMBER 250904
TM
C70
.01uF
C69
.01uF
C68
.01uF
C67
.01uF
C63
2.2uF
1206
C64
2.2uF
1206
C65
2.2uF
16V
TANT
20%
+
C66
2.2uF
16V
TANT
20%
+
+5CD
AGND AGND
+5A
AGND
AGND
AGND
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