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A
B
Q Q
3 7 6 3 1 5 1 5 0
SCHEMATIC
DIAGRAM-1
U001
BAAF-0249
DIGITAL AMP.
SECTION
1
(PART-3)
C503
R501
22/50(UTSJ)
R507
6
3.3K
2.7K
2
7
GND_LCH
6
LCH
5
4
RCH
T E
L
3
GND_RCH
1 3 9 4 2 2 9 6 5 1 3
2
-B_PRE_RCH
1
+B_PRE_RCH
3
4
2.7K
3.3K
6
R502
22/50(UTSJ)
R508
C504
w w w
5
.
C
+17V
DIGITAL AMP. CIRCUIT PC BOARD
2
6
Q505A
4
1
HN3A51F
Q505B
5
3
2
Q507A
4
Q507B
6
6
5
HN3A51F
C505
R523
1
3
2SC2712
+5V
Q519
C509
Q509
78L05
821
1.2K
R551
O
22/50(UTSJ)
1
3
Q501B
1
G
Q501A
12K
2
HN3C51F-BL
R519
5
C511
C513
47K
2
4
102F
102F
8
Q511A
Q511B
Q511C
R655
1
6
3
7
2
5
470
R513
4
TC7W14FU
100
1
3
2
R517
R515
47
47
Q503
2SC2712-GR
R583
39K
C535
C533
220/25
220/25
-17V
R587
R585
120K
470K
120K
470K
R588
R586
-17V
220/25
220/25
C536
C534
39K
R584
2SC2712-GR
Q504
47
47
R518
R516
2
1
3
R514
7
TC7W14FU
4
100
1
6
2
3
5
R656
470
Q512A
Q512B
Q512C
8
102F
102F
4
2
5
47K
C512
C514
HN3C51F-BL
R520
1
2
3
Q502A
12K
1
3
Q502B
G
22/50(UTSJ)
O
I
1.2K
R552
821
78L05
C510
Q510
+5V
Q520
2SC2712
C506
R524
1
3
6
HN3A51F
5
Q508B
Q508A
2
4
3
5
Q506B
HN3A51F
1
6
4
Q506A
2
x
a o
+17V
y
i
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D
E
R589
33(1/4W)
R591
Q607
2.2K(1/4W)
2SK208-GR
R685
1
3
R599
I
0
2.2K(1/4W)
3
M1FL20U
D601
R601
4.7(1/4W)
D603
R663
1SS352
10K
HN1A01F-GR
Q629
Q627
2
5
2
IRS20954S
O
Q601
2SA1162-GR
R615
R689
330K
1
16
VDD
CSH
6.8(1/4W)
2
15
Q513
CSD
VB
2SC2712
3
14
IN
HO
4
13
VSS
VS
5
12
NC
NC
R575
6
11
VREF
VCC
R617
4.7K
7
10
OCSET
LO
R579
8
9
6.8(1/4W)
DT
COM
10K(1/4W)
+17V
Q611
2SA965
Q615
2SC2712-GR
2SA1162-GR
Q617
Q613
-17V
2SC2235
Q
Q
3
7
Q614
6
-17V
2SC2235
Q618
2SA1162-GR
2SC2712-GR
Q616
Q612
+17V
2SA965
Q602
IRS20954S
10K(1/4W)
8
9
DT
COM
6.8(1/4W)
R580
7
10
OCSET
LO
4.7K
6
11
R618
VREF
VCC
5
12
R576
NC
NC
4
13
VSS
VS
3
3
14
IN
HO
2SC2712
2
15
Q514
CSD
VB
1
16
6.8(1/4W)
VDD
CSH
330K
R690
R616
2
5
2
2SA1162-GR
O
Q630
HN1A01F-GR
Q628
10K
1SS352
R664
D604
4.7(1/4W)
R602
D602
M1FL20U
0
2.2K(1/4W)
1
3
R686
Q608
R600
2SK208-GR
2.2K(1/4W)
33(1/4W)
R592
R590
u 1 6 3
.
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F
G
2
4
8
9
9
U002
BAAF-0278
SPEAKER TERMINAL PC BOARD
2
1
+33V
R629
47K
R687
0
2
1
GNDNF_LCH
7
1
VB_LCH
GNDDG_LCH
6
2
OUT_LCH
OU _ C
1
+B_LCH
5
3
GND_LCH
Q603
-B_LCH
4
4
-B_LCH
IRFB4020
GND_POWER_LCH
3
5
+B_LCH
OUT_LCH
2
6
GNDDG_LCH
J903
VB_LCH
1
7
GNDNF_LCH
J901
L901
L905
1
22u
6.8u
Q605
IRFB4020
-33V
HN1C01F-GR
Q625A
Q625B
2
5
R631
56(1/4W)
PROTECT
CSD_LCH
9
9
CSD_LCH
R633
PROTECT_LCH
8
8
PROTECT_LCH
56(1/4W)
+10VDG_LCH
7
7
+10VDG_LCH
6
6
+10VDG_RCH
5
5
+10VDG_RCH
R634
3
1
5
1
5
0
8
2
9
2
PROTECT_RCH
4
4
PROTECT_RCH
5
56(1/4W)
2
CSD_RCH
3
3
CSD_RCH
Q626A
Q626B
-B_PRE_RCH
2
2
-B_PRE_RCH
6
HN1C01F-GR
+B_PRE_RCH
1
1
+B_PRE_RCH
Q620A
HN1C01F-GR
PROTECT
CSD
SPA_RL
SPB_RL
+B_DG
GND_DG
TLP283-4
TLP283-4
R632
56(1/4W)
6.8u
-33V
22u
L906
L902
J902
J904
IRFB4020
Q606
1
VB_RCH
7
1
GNDNF_RCH
OUT_RCH
_
6
2
GNDDG_RCH
GND_POWER_RCH
5
3
+B_RCH
-B_RCH
4
4
-B_RCH
IRFB4020
Q604
-B_RCH
+B_RCH
3
5
GND_RCH
1
2
GNDDG_RCH
2
6
OUT_RCH
_
GNDNF_RCH
1
7
1
0
R688
47K
2
R630
1
+33V
+B_RCH
Q910
2SC3851-Y
Q916
2SC2712-GR
101
3
C936
10K
390K
R924
1
R916
S1NB60
2
D909
m
UDZS24B
D908
D907
UDZS24B
c o
R915
390K
R923
10K
C935
101
Q915
2SA1162-GR
+21V
2SA1488-Y
Q909
ADM-30.1
H
2
8
9
9
1
LN25XB60
+33V
2
2
D901
3
+B_LCH
4
1
4
3
P907
1
2.2(1/2W)
R901
D903
-B_LCH
Q901
2
S1NB60
-33V
-21V
78M12
2
I
O
1
3
G
1
1
4
2
3
NTM-4PDMRR427
P901
2
L903
59u
1
4
4
2
3
C929
5
102J
HN1C01F-GR
P960
6
4
3
2
1
TRM-423
Q619A
2
5
Q619B
NRL-2P5A-DC12-192
3
3
4
2
5
2.2K
1
6
CSD
R905
RL901
D905
1SS352
C931
104J
Q903
DTC123JKA
NRL-2P5A-DC12-192
3
3
4
Q620B
2
5
4
9
8
2
9
9
5
1
6
RL902
D906
1SS352
C932
104J
NTM-4PDMRR426
Q904
DTC123JKA
P902
1
2
3
4
C930
5
2.2K
CSD
102J
R906
PROTECT
L904
59u
4
2
3
2
-21V
1
3
G
1
1
4
O
I
2
-33V
78M12
S1NB60
Q902
2
D904
R902
2.2(1/2W)
P908
1
3
4
+33V
1
4
3
D902
2
2
LN25XB60
1
2.2(1/2W)
R932
4
2.2(1/2W)
R933
ADM-30.1 No USE
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