Duo-I Plus Power Amplifier - Boston duo-i plus Service Manual

1 2
A
B
C
D
1 2
3 4
CN2
Do Not Populate
C174
330pF, 50V
R123
10R
Do Not Populate
C43
PGND
1uF
L1
22uH
T18
C45
R31
1nF, 50V
20R
T29 1k
HEAD_DET
R106
PGND
STANDBY
T28
R33
100k
PGND
P_Power_Amp_FILT
C47
C49
R34 25V 220nF
10uF
100k
PGND
1
NC
C51 0.47uF 50V 2
RINN
C52 0.47uF 50V 3
RIGHT RINP
4
AGND
C55 0.47uF 50V 5
LEFT LINP
C56 0.47uF 50V 6
LINN
7
NC
8
GAIN
9
26dB Gain/Slave GAIN1
10
MSTR/SLV
R132 249 11
SYNC1 SYNC
12
NC
R35
GND_ANALOG
100k
PGND
C61
10nF
R36
VREG
100k C62
1uF
PGND C63
220nF
C65
R37 1nF, 50V T20
20R
L3
22uH C67
PGND 1uF
Do Not Populate
C176
PGND
330pF, 50V
R125
10R
Do Not Populate
PGND
CN3
3 4
5 6
Do Not Populate
C175
R124
330pF, 50V
10R
Do Not Populate
PGND
PGND
C44
1uF L2
22uH
T19 C46
R32
1nF, 50V
20R
PGND
C48
220nF
U4
PGND
TPA3100D2PHP
P_Power_Amp_FILT
36
NC
35
PVCCR P_Power_Amp
34 C53 1uF 220uF
PVCCR
33 C54 + 25V
PGNDR L12
32
PGNDR 220uH
31
VCLAMPR
30 C57 1uF
VCLAMPL
29 C58 1uF
PGNDL
28
PGNDL
27 C59 220uF
PVCCL
26 + 25V
PVCCL
25 C60 1uF
NC
PGND
PGND
PGND
C64
220nF
C66
1nF, 50V R38
T21
20R
L4
22uH
PGND
C68
1uF
Do Not Populate
C177
Do Not Populate
330pF, 50V
R126
10R
PGND

Duo-i Plus Power Amplifier

5 6
7 8
A
B
C
D
Integrated Products Division
300 Jubilee Drive
Peabody, MA 01960 USA
978.538.5000 FAX: 978.538.6226
Title
Duo-I+
Size Number Revision
D Power Amplifier 3.0
Date: 9/10/2009 Time: 11:00:58 PM Drawn By: G Rogge Sheet 8 of 9
File: C:\BostonAcoustics\ClockRadio\Duo-I Plus\Hardware\Power Amp.SchDoc
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