Schematic Diagram - Main Board (1/4) - Sony STR-DH720 Service Manual
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Also See for STR-DH720:
- Service manual (6 pages) ,
- Specification sheet (2 pages) ,
- Quick setup manual (2 pages)
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2-16. SCHEMATIC DIAGRAM – MAIN Board (1/4) –
1
2
3
MAIN BOARD (1/4)
SBL_OUT
A
SBR_OUT
C_OUT
B
C548
0.1
C545
47 35V
D536
MAZ8056GMLS0
C
R547
6.8k
R549
R548
22k
22k
D
E
F
G
IC501
H
PRE DRIVER
STK350-630TS-E
I
J
K
17
18
4
MAIN BOARD (3/4)
(Page 21)
STR-DH720/DH720HP
4
5
6
SBR_OUT
[C]
R551
R829
R544
R568
10
10
0
47k
R559
R550
L550
R828
L828
100k
4.7
1.7uH
4.7
1.7uH
CL394
C554
C829
C550
R569
C820
0.022
0.01
68k
0.022
0.01
R557
R564
R820
47k
47k
15k
Q550
Q811
2SA1514KT146S
2SA1514KT146S
CURRENT DETECT
R562
CURRENT DETECT
1.5k
0
0
-1
0
0
0
Q555
2SA1514KT146S
-1
-60
CURRENT DETECT
-1
C551
C811
220p
220p
R513
0.22
R558
R811
R812
R552
6.2k
4.7k
6.2k
4.7k
SBR +VE
SBR -VE
SBL +VE
Q553
Q554
Q503
MN2488-OPY-MK
MP1620-OPY-MK
MN2488-OPY-MK
B
C
E
B
C
E
B
C
E
1
2
3
1
2
3
1
2
3
1
61
0
-1
-61
0
1
61
0
C552
47p
C561
C808
47p
47p
R553
100
R809
R567
100
R555
R566
100
R807
82k
82k
560
R556
0.4
R806
2.2k
2.2k
-0.5
-1
-1
Q552
2SD2144S-V
Q551
BIAS
2SA1175-HFE
Q801
BIAS
1
0.4
2SA1175-HFE
C558
BIAS
1
47 35V
IC501
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
-61
61
61
1
0
0
0
0
0
-60
-1
1
C560
10p
C553
100p
C559
3p
R565
68k
R554
68k
R560
R563
1k
2.2k
C557
C555
10
220
10V
50V
[C]
19
MAIN BOARD (3/4)
7
8
9
10
SBL_OUT
[SBR]
[SBL]
R830
R879
R880
47k
10
47k
R822
R872
100k
R878
L878
100k
4.7
1.7uH
R816
C870
R866
C879
68k
0.01
68k
0.022
R870
R815
R865
47k
15k
15k
Q861
2SA1514KT146S
R814
CURRENT DETECT
R864
1.5k
1.5k
-1
0
0
0
-1
0
Q862
Q812
2SA1514KT146S
2SA1514KT146S
CURRENT DETECT
CURRENT DETECT
-60
-1
-60
C861
220p
R813
R863
0.22
0.22
R862
R861
6.2k
4.7k
SBL -VE
C +VE
C -VE
Q504
Q853
Q854
MP1620-OPY-MK
MN2488-OPY-MK
MP1620-OPY-MK
B
C
E
B
C
E
B
C
E
1
2
3
1
2
3
1
2
3
-1
-61
0
1
61
0
-1
-61
0
C859
C809
C858
47p
47p
47p
R860
R859
R810
100
100
100
R857
R858
R808
560
82k
560
R856
2.2k
0.4
0.4
Q852
2SD2144S-V
Q802
BIAS
2SD2144S-V
-1
-0.5
-1
-1
-1
BIAS
-0.5
Q851
2SA1175-HFE
BIAS
1
0.4
0.4
C857
47 35V
C807
47 35V
IC801
PRE DRIVER
IC801
STK350-630TS-E
15
14
13
12
11
10
9
8
7
6
5
4
3
-61
61
61
1
0
0
0
0
0
-60
-1
C803
C853
10p
10p
C802
C852
C805
100p
100p
C855
R804
R854
3p
3p
68k
68k
R802
R852
68k
68k
R803
R801
R851
R853
2.2k
1k
1k
2.2k
C860
C862
C812
C810
220
10
10
220
50V
10V
10V
50V
[SBR]
[SBL]
20
21
22
5
(Page 21)
19
19
11
12
13
FR_OUT
[FR]
R779
R780
10
47k
R772
R778
L778
100k
4.7
1.7uH
CL396
C779
C770
R766
0.022
0.01
68k
R770
CL395
47k
Q761
R765
2SA1514KT146S
15k
R764
CURRENT DETECT
1.5k
0
0
-1
0
Q762
CL397
2SA1514KT146S
CURRENT DETECT
-1
-60
C761
220p
R763
0.22
R762
R761
6.2k
4.7k
FR +VE
FR -VE
Q753
Q754
MN2488-OPY-MK
MP1620-OPY-MK
B
C
E
B
C
E
1
2
3
1
2
3
1
61
0
-1
-61
0
C758
C759
47p
47p
R760
R759
100
100
R757
R758
82k
560
R756
0.4
2.2k
-0.5
-1
Q752
-1
2SD2144S-V
BIAS
Q751
2SA1175-HFE
BIAS
1
0.4
C757
47 35V
2
1
1
STR-DH720/DH720HP
14
15
16
17
1
MAIN BOARD
2
3
1
(2/4)
4
5
(Page 20)
6
7
MAIN BOARD
2
(2/4)
8
9
(Page 20)
10
11
12
13
14
MAIN BOARD
15
3
(2/4)
(Page 20)
16
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