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AV32H20EUS
AV28H20EUS
AV28H20EUB
AV32H20EUS
AV28H20EUS
AV28H20EUB
No.51945
No.51945
*6
Q607
5
V
100/50
C628
330
R106
R008
0
.01
C111
0
Y688
10k
R651
R
T
V
1
B
B
E
_
B
O
O
S
T
X
9V REG
IC605
X
-9V REG
IC606
*2 MUTING
Q602
X
C611
X
C603
TA8246AH
POWER AMP
IC601
1
0
/5
0
C629
1/50
C616
1/50
C618
X
C617
1
0
V
X
C602
H
/P
_
R
V
T
V
1
.2
2
/5
0
80%
C
6
3
0
X
C605
0
R646
.22/50
80%
C642
X
R638
R006
X
CN00S
X
C650
QNN0296-001
J001
1000/35
QETM1VM-108
C648
1000/35
QETM1VM-108
C649
X
80%
C
6
3
1
22/50
C600
X
Y611
X
Y610
X
Y661
LT
V
1
S
D
A
1
A
.M
U
T
E
BA4558F-X
LPF
IC662
T
U
1
_
A
F
C
X
Y662
IC662
27k
R601
H
/P
_
L
X
D621
1/50
N
C
F
2
1
C
Z
-1
0
5
X
Y612
S
C
L
1
A
U
D
IO
_
M
U
T
E
*3
D615
1/50
N
C
F
2
1
C
Z
-1
0
5
X
Y613
A
M
P
_
M
U
T
E
A
G
C
R
_
S
U
B
2p
CH
C119
0
Y608
X
Y606
X
Y607
L
_
S
U
B
A
_
C
_
V
C
C
NQR0389-003X
K101
NQR0389-003X
K001
*3
D617
27k
R603
X
CN008
47k
R605
27k
R606
*3
D614
L
/R
_
C
E
N
T
15p
C
H
C679
0
Y603
2p
CH
C120
15p
CH
C678
0
Y604
X
R632
100
100
R
E
A
D
Y
0
X
C654
S
T
A
T
U
S
D
A
T
A
C
L
O
C
K
X
R633
X
C626
P
O
W
_
O
N
/O
F
F
X
5V REG
IC664
X
CH
C612
X
CH
C622
0
Y664
X
C669
X
C651
X
C670
X
C668
R
L
8
V
9
V
X
C653
X
C652
1/10
80%
C151
.22/50
80%
C632
X
80%
C
6
3
3
.22/50
80%
C641
1/10
80%
C154
1/10
80%
C129
1/10
80%
C152
.001
CH
C155
.001
CH
C156
.001
CH
C123
.001
CH
C122
1/10
80%
C674
1/10
80%
C673
1/10
80%
C680
1/10
80%
C686
1/10
80%
C153
B
B
E
_
O
N
/O
F
F
10k
R677
X
Y615
X
R674
X
R676
X
R
-
B
A
S
S
B
A
S
S
R
-
L
-
L
-
B
A
S
S
B
A
S
S
R
O
U
T
L
O
U
T
V
c
c
S
C
L
S
D
A
L
-T
R
E
L
-T
R
E
B
L
E
B
L
E
L
-IN
L
-L
O
U
D
N
E
S
S
R
-IN
R
-L
O
U
D
N
E
S
S
C
H
IP
V
R
E
F
G
N
D
IC
6
6
1
*
C690
*2
MUTING
Q615
X
C
6
6
1
X
C
6
6
3
X
C662
*2
POWER ON/OFF DET
Q601
X
C664
X
C665
X
R662
X
R663
X
R681
X
R661
100k
R644
6.8k
R610
X
C671
X
Y614
X
Y663
X
Y668
X
POWER BASS
IC665
0
Y665
X
C667
X
C666
0
R684
0
R687
IC665
X
C672
X
CH
C692
A
_
S
U
B
_
G
N
D
X
Q612
*
C691
X
R608
X
C697
X
D616
M
S
P
_
R
E
S
E
T
X
D613
100k
R671
100k
R670
X
D609
X
C696
X
R682
18k
R667
X
R688
18k
R669
47k
R668
TU001
47k
R666
150p
CH
C676
SMF-
1401A-U2
150p
CH
C677
47/25
C675
10k
R664
10k
R665
MUTING
DTC323TK-X
Q616
MUTING
DTC323TK-X
Q617
220/16
C607
SMF-
1402A-U2
QAU0276
-001
X
R695
DTC124EKA-X
MUTING
Q605
*1
MUTING
Q606
X
R694
*1
10/50
C130
QAU0276
-001
*1
X
R693
POWER BASS
IC665
IC665
X
CH
C658
68p
CH
C108
X
X
R659
X
R696
X
Y616
0
Y617
0
Y621
X
X
Y620
Q101
NJM2150AM-X
BBE
IC663
22k
R679
DTC124EKA-X
MUTING
Q604
27k
R680
.0033
C684
.033/25
C685
X
R648
10k
R675
X
Y618
Y101
R009
2.2
1/2W
QRK126J-2R2X
R649
R102
X
R657
47/25
C683
1
0
k
R
6
7
8
X
R656
X
R658
X
C657
22k
R672
X
Y
6
6
7
X
Y666
X
Y622
0
0
27k
R673
.0033
C681
0
.033/25
C682
10/50
C687
X
Y619
47/25
C688
.1/16
C689
0
X
C159
X
C
H
C157
2.2
1/2W
QRK126J-2R2X
R637
MA3330/L/-X
D619
0
Y669
100k
R609
560
R639
0
Y670
X
C
H
C158
X
R623
R103
2.2k
2.2k
MA3330/L/-X
D620
R104
X
R630
X
D629
R105
560
1k
1k
560
X
C601
X
C604
X
D605
X
D604
X
C613
X
C615
X
R685
X
R686
H
/P
_
G
N
D
0
Y676
X
C693
X
R683
X
R689
X
C694
0
CH
C695
0
CH
C698
X
C638
X
C639
X
D626
X
D627
0
R654
0
R655
0
Y672
X
Y673
X
R636
0
R645
3
2
V
S
C
L
2
X
R690
0
Y674
S
D
A
2
X
Y675
X
R699
X
Y601
A
_
G
N
D
X
Y602
A
_
M
+
V
C
C
A
_
M
-V
C
C
0
Y605
X
C614
0
Y609
33k
R618
*3
D611
*3
D610
X
C610
5.6k
R620
220/16
C606
10k
R650
680
R643
680
R642
X
D612
X
AMP(HP)
IC604
X
R635
X
R631
X
R647
X
R634
X
R697
10k
R602
10k
R604
X
Y686
X
Y687
0
Y623
0
Y685
X
D630
X
Y102
CE42681-001Y
K601
CE42681-001Y
K602
.01
C647
.01
C646
X
D601
X
MUTING
Q603
X
R607
X
R660
X
R698
2200/35
QETM1HM-228
C634
100k
R619
A_GND
0
Y681
X
Y677
X
Y678
X
Y684
*3
D602
*
Y101
X
Y680
X
C627
X
D628
X
Y679
X
Y682
X
Y683
X
R600
X
R617
X
C660
X
C643
X
C659
X
C640
X
R692
X
R691
0
R159
X
R160
0
R161
X
R162
NQR0389-003X
K102
.1/16
C107
GND1
X
IC603
X
R163
X
C621
X
C637
X
R
6
2
2
X
Q614
X
C
6
2
0
X
R
6
2
4
X
R
6
2
5
X
R
6
2
8
X
IC602
X
R621
X
R653
X
C608
X
C
6
1
9
X
R164
X
R641
X
R629
X
Q608
X
C624
X
C625
X
R626
X
C645
X
R627
X
D622
X
R652
X
D606
X
C636
X
D625
X
C655
X
D607
X
D623
X
D624
X
C623
X
C644
X
R640
X
D618
X
D603
X
D608
X
R613
X
R614
X
R615
X
C609
X
MUTING
Q613
X
R616
X
Q610
X
R612
X
Q609
X
R611
X
INV.
Q611
X
CN111
X
C656
MSP3415DQGB3GHX
MULTI SOUND PROCESSOR
IC101
CE42546-001Z
X101
.01
C118
.01
C117
.1/16
C101
10/50
C102
*
AMP
Q101
*
R103
*
R104
*
R102
10/50
C127
10/50
C125
.1/16
C128
.1/16
C126
10/50
C124
10/50
C105
.1/16
C106
100
R111
.01
C121
.1/16
C103
NQR0431-001X
LC102
4.7
QQL244K-4R7Z
L102
100/16
C104
100
R110
100
R109
0
QRN143J-0R0X
L101
*
R105
*1
BUFFER
Q102
1k
R108
.0047
C116
X
R155
X
R157
0
R156
0
R158
X
R152
X
R154
100
R151
100
R153
.0022
C001
10
QQL244K-100Z
L002
10/50
C002
1000/16
C005
100
R005
10/50
C007
X
R002
.01/50
C006
X
R003
QAU0276-001
TU001
100
R004
X
R001
X
C003
.1/16
C004
27
L001
10
L003
.1/16
C009
10/50
C010
*
R009
*
R006
*
R008
9
V
+
AGC
SCL1
AUDIO_MUTE
SDA1
M
A
IN
_
R
BBE_ON/OFF
-9
V
M
A
IN
_
L
A_M+VCC
T
U
1
_
A
F
C
S
R
A
G
C
S
D
A
1
S
C
L
1
32V
S
L
B
B
E
_
B
O
O
S
T
MSP_RESET
CENTRE
C
E
N
T
R
E
-9V
S
L
S
R
C
L
O
C
K
S
T
A
T
U
S
D
A
T
A
R
E
A
D
Y
S
D
A
1
S
C
L
1
L
/R
_
C
E
N
T
B
B
E
_
B
O
O
S
T
B
B
E
_
O
N
/O
F
F
L
B
B
E
_
O
N
/O
F
F
L
/R
_
C
E
N
T
A
U
D
IO
_
M
U
T
E
A
M
P
_
M
U
T
E
C
L
O
C
K
S
T
A
T
U
S
D
A
T
A
R
E
A
D
Y
D_MUTE
SDA2
SCL2
S
D
A
2
S
C
L
2
M
S
P
_
R
E
S
E
T
A
_
M
-V
C
C
R
L
R
MAIN_R
MAIN_L
S
C
L
1
S
D
A
1
AMP_MUTE
A_M-VCC
V
T
V
1
3
2
V
9V+
A
_
M
+
V
C
C
POW_ON/OFF
P
O
W
_
O
N
/O
F
F
D
_
M
U
T
E
A
_
G
N
D
TU1_AFC
VTV1
A_GND
Vcc
RIN
HPF(R)
CR1(R)
BPF(R)
N
C
N
C
N
C
CR2(R)
LPF(R)
ROUT
VREF
Vcc
GND
LIN
HPF(L)
CR1(L)
BPF(L)
CR2(L)
LPF(L)
LOUT
H H/L
L H/L
BBE
ON/OFF
N
C
N
C
N
C
N
C
NC
NC
NC
NC
NC
NC
N
C
A
.M
U
T
E
RESETQ
NC
NC
N
C
N
C
DVSS
DVSUP
TP
TP
TP
TP
SDA
SCL
V
R
E
F
2
NC
D
A
C
M
_
R
D
A
C
M
_
L
N
C
V
R
E
F
1
S
C
1
_
O
U
T
_
L
S
C
1
_
O
U
T
_
R
N
C
A
H
V
S
U
P
CAPL_M
AHVSS
AGNDC
SC2_IN_L
SC2_IN_R
ASG1
SC1_IN_L
SC1_IN_R
VREFTOP
MONO_IN
AVSS
A
V
S
U
P
A
N
A
_
IN
+
T
O
N
E
/V
O
L
.
A
N
A
_
IN
-
T
E
S
T
E
N
X
T
A
L
_
IN
X
T
A
L
_
O
U
T
N
C
D
_
C
T
R
_
O
U
T
1
D
_
C
T
R
_
O
U
T
0
A
D
R
_
S
E
L
S
T
A
N
B
Y
S
L
-IN
S
L
-IN
Vcc_G
R
18.432MHz
NC
L
NC
D
_
M
U
T
E
NC
N
C
K102
IF1
AGC
NC
NC
5V
R
GND
TU2
4MHz
MUTE
Vcc
R
L
L
SCL
SDA
ADR
GND
IFIN
4MHz
BT
5V
VIDEO OUT
RF AGC
AFC
SDA
SCL
SIF
AM
S
R
-IN
S
R
-IN
G
N
D
G
N
D
L
-O
U
T
R
-O
U
T
9
V
9
V
G
N
D
G
N
D
G
N
D
G
N
D
C
-O
U
T
S
L
-O
U
T
S
R
-O
U
T
H
/P
-L
H
/P
-R
G
N
D
G
N
D
L
-IN
R
-IN
9
V
L
9
V
-9
V
-9
V
B
B
E
O
N
/O
F
F
L
/R
.C
S
W
L
O
W
B
O
O
S
T
5
V
5
V
S
C
L
1
S
D
A
1
D
-5
V
D
-5
V
D
-G
N
D
D
-G
N
D
D
S
P
C
L
K
D
S
P
S
T
A
T
U
S
D
S
P
D
A
T
A
D
S
P
R
E
A
D
Y
G
N
D
G
N
D
G
N
D
G
N
D
DOLBY PWB
OUT
IN
GND
GND
O
U
T
+
V
c
c
+
V
c
c
M
U
T
E
M
U
T
E
-V
c
c
-V
c
c
-IN
-IN
+
IN
+
IN
O
U
T
IN
_
M
U
T
E
IN
_
M
U
T
E
SP-L
SP-R
0
X
BW
*1
*2
*3
*4
POWER AMP
POWER AMP
TWEETER
TWEETER
GND
GND
T
O
S
P
E
A
K
E
R
*5
*6
Vcc
*7
GND
*8
:
:
:
:
:
:
:
:
:
:
:
OPTION(NON MOUNT)
IM-BW
NRSA63J-0R0X
2SC2412K/QR/-X
2SA1037AK/QR/-X
MA111-X
MA3120/M/-X
DTC124EKA-X
DTA124EKA-X
2SC1740S/QR/-T
2SA933AS/QR/-T
NOTE
C
C
GND
GND
C
R
SC_OUT
MAIN PWB
(2/2)
SMF-1401A-U2
(AV32H20EUS)
SMF-1402A-U2
(AV28H20EUS)
(AV28H20EUB)
8V
3.7V
0V
0V
0V
1.6V
4.8V
4.8V
3.6V
4.8V
0V
2.6V
3.7V
1.6V
0V
0V
0V
0V
1.4V
4.9V
3.7V
1.4V
4.8V
0V
2.2V
6.5V
2.7V
8.9V
5.8V
2.1V
4.5V
4.5V
4.5V
4.5V
4.5V
4.5V
0V
0V
0V
8.9V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
4.4V
-0.1V
0V
0V
1.2V
0V
0.1V 2V
2V
0V
8.5V 0V
12.3V26.1V 0V
0V
12.4V
4.9V
5.3V
4.8V
0.1V
25.4V
25.4V
0V
2-7
2-8
MAIN PWB CIRCUIT DIAGRAM
[2/2]