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Q Q
3 7 6 3 1 5 1 5 0
MV-044 (AUDIO AMP) SCHEMATIC DIAGRAM • See page 4-5 for printed wiring board.
1
2
3
MV-044 BOARD (4/5)
A
XX MARK:NO MOUNT
NO MARK:DVD/CD PLAY
R664
XX
ALT-
R601
B
4.7k
C601
±0.5%
560p
ALT+
R602
R605
4.7k
5600
±0.5%
±0.5%
R665
XX
C
P_GND_AUDIO
D
R666
XX
ART+
E
R603
4.7k
MV-044 BOARD
±0.5%
(2/5)
ART-
R604
4.7k
±0.5%
T E
L
1 3 9 4 2 2 9 6 5 1 3
R667
XX
F
G
H
XLMUTE
XMAMUTE
XRMUTE
B+
AU+5V
P_GND_SPDIF
SPDIF
I
MV-044 BOARD(2/5)
XA_MUTE
MV-044 BOARD(3/5)
COAX
C626
XX
J
MV-044 BOARD(3/5)
P_GND_SPDIF
IC604
XX
D IN
B+
VCC
w w w
GND
K
IC605
TOTX179
.
1.7
D IN
5
DIGITAL OUT
OPTICAL
VCC
L
GND
05
4
5
6
7
R642
R612
0
R610
5600
2200
±0.5%
R658
XX
R608
R648
C606
2200
XX
180p
B-
C603
180p
B-
-9
0
4
3
2
1
4
3
2
C607
0.01u
R655
XX
IC601
AUDIO AMP
IC601
NJM4558M-TE2
R657
C608
XX
0.01u
5
6
7
8
5
6
7
1.3
11.3
C604
B+
180p
C619
XX
C605
R606
R650
180p
5600
XX
±0.5%
R659
XX
R611
C602
R609
5600
560p
2200
R643
±0.5%
0
B+
Q613
XX
R668
0
CL603
CL604
D602
DAP202K-T-146
B+
R653
1k
C629
5
47u
R656
Q611
16V
MSD601-RT1
1k
2.5
BUFFER
D603
DAP202K-T-146
C628
47u
R651
1.8
16V
68
CL605
R649
R654
R652
220
10k
1k
JL602
IC603
JL603
B+
+5V REG
IC603
JL604
NJM78L05UA-TE1
C627
C625
47u
0.01u
1
2
3
16V
5
11.3
x
a o
y
B+
C622
0.01u
i
R683
SIGNAL PATH
IC605
XX
B+
OPTICAL DIGITAL
AUDIO
OUTPUT
SIGNAL
PB
4-15
http://www.xiaoyu163.com
8
8
9
10
C610
47u
R626
16V
470
C614
XX
B-
0
R638
100k
0.8
R630
1
47k
R634
Q607
4700
2SD1938
C620
XX
(F)-ST(TX).SO
MUTE
IC602
XX
R637
R639
4700
100k
R629
0.8
47k
C630
R635
Q608
XX
XX
2SD1938
(F)-ST(TX).SO
8
MUTE
0
B+
B+
C611
47u
R627
16V
470
R661
XX
C631
R662
XX
R660
XX
XX
Q
Q
3
7
6
3
Q614
XX
R623
XX
R663
Q602,604,605
XX
MUTE DRIVE
Q605
MSB709-RT1
D605
10.6
XX
10.6
C609
R624
1u
R615
10k
9.9
50V
XX
R622
R628
10k
10k
0
6.6
Q604
UN2217-QRS-TX
0.6
R625
47k
Q602
R613
MUN2213T1
4700
D601
DAN202K-T-146
R632
Q610
10.6
10k
MSB709-RT1
10.6
C612
1u
9.9
50V
C613
R636
220u
R631
10k
16V
10k
Q609
UN2217-QRS-TX
0
6.6
0.6
R633
R614
47k
4700
Q606
Q606,609,610
MUN2213T1
MUTE DRIVE
B+
B+
B+
u 1 6 3
.
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2
4
9
9
11
12
13
14
R640
470
LCH_OUT
RCH_OUT
ERAUDIOL
C615
220p
C617
XX
P_GND_AUDIO
C618
XX
ERAUDIOR
C616
220p
R641
470
CN604
JL641
1
5
1
5
0
8
9
2
1
GND
B-
JL642
2
AU-10V
B+
JL643
3
AU+11V
JL644
4
XMIC
JL645
5
MIC+ECHO
JL646
6
XVOICE
KRMOD
R672
XX
XVOICE
R669
XX
MIC
Q617
XX
R646
XX
Q601
B+ SWITCH
Q601
R617
C642
MSB710-RT1
B+
B+
10k
XX
11.3
11.3
10.6
R684
R616
5600
5600
C640
-9.5
Q603
XX
R618
R619
MSD601-RT1
100k
220k
C643
-9
-10.9
XX
Q616
C641
-9.7
MSB709-RT1
XX
B-
-9.7
D604
1SS355TE-17
-10.3
R620
470
Q603,616
R621
10k
B+ SWITCH
C644
47u
16V
B+
EVER+11V
B-
SW-10V
R647
XX
B+
B+
EVER+3.5V
AU+11V
B+
B+
m
c o
GND
4-16
DVP-LS755P
2
8
9
9
15
MV-044 BOARD
(3/5)
MV-044 BOARD
(3/5)
XX
4
9
8
2
9
9
MV-044 BOARD
(2/5)
MV-044 BOARD
(5/5)
AUDIO AMP
MV-044 (4/5)
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