Sony STR-DE725 Service Manual ▷ View online
STR-DE725
— 35 —
— 36 —
3-15. SCHEMATIC DIAGRAM — SPEAKER SECTION —
The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
STR-DE725
— 37 —
— 38 —
3-16. PRINTED WIRING BOARD — POWER SECTION —
• See page 7 for Circuit Boards Location.
Ref. No.
Location
• Semiconductor
Location
D808
C-3
D901
D-4
D902
D-4
D903
D-4
D904
C-4
D905
C-4
D906
C-4
D907
G-8
IC801
E-2
IC802
F-3
IC803
G-3
IC901
F-4
Q901
D-4
Q902
G-4
T
O
P
1-669-998-
11
(13)
1-670-005-
11
(13)
T902
1
4
1
4
E
E
5
8
4
1
1
3
1
3
1
1
3
6
AC BOARD
REG BOARD
AC
IN
IN
CNJ901
AC OUTLET
16
EB902
JW903
EB901
T901
POWER
TRANSFORMER
1
2
3
1
2
3
4
5
6
(Page 43)
(Page 14)
(Page 14)
1
2
A
B
C
D
E
F
G
H
I
J
3
4
5
6
7
8
9
10
11
12
13
STR-DE725
— 39 —
— 40 —
3-17. SCHEMATIC DIAGRAM — POWER SECTION —
• See page 61 for IC Block Diagrams.
The components identified by mark
!
or dotted
line with mark
!
are critical for safety.
Replace only with part number specified.
STR-DE725
— 41 —
— 42 —
3-18. PRINTED WIRING BOARD — DIGITAL (SIDE A) SECTION — •
See page 7 for Circuit Boards Location.
D1201
H-4
D1205
G-8
D1206
H-4
IC1005
D-13
IC1006
C-13
IC1007
B-13
IC1101
F-10
IC1102
E-11
IC1103
D-2
IC1104
F-4
IC1105
F-2
IC1106
F-3
IC1108
E-10
IC1109
E-11
IC1154
F-5
IC1201
F-7
IC1202
B-6
IC1301
C-8
IC1302
C-10
IC1303
D-9
IC1304
D-10
IC1305
D-7
IC1401
C-5
IC1402
C-3
IC1403
D-8
Q1201
H-3
Q1202
H-3
Q1203
H-3
Q1204
E-9
Q1205
E-9
Q1206
E-9
Q1207
E-8
Q1208
H-4
Ref. No.
Location
• Semiconductor
Location
DIGITAL BOARD
(SIDE A)
D. IN/OUT BOARD
(SIDE A)
1-670-029-
11
(13)
1-670-028-
11
(13)
1
8
9
16
1
1
7
7
8
8
14
14
E
E
E
E
7
8
14
1
7
8
14
1
40
44
39
1
6
7
17
18
28
29
1
7
8
14
30
31
60
61
90
91
120
1
1
22
23
44
1
44
11
12
22
23
33
34
1
4
5
8
1
4
5
8
1
4
5
8
1
4
5
8
1
4
5
8
IC1154
E
E
E
E
91
90
61
60
31
30
1
1
120
25
24
13
12
36
37
1
48
16
R1312
IC1109
C1117
R1160
Q1208
A A
D1206
K
1
2
A
B
C
D
E
F
G
H
I
J
3
4
5
6
7
8
9
10
11
12
13
14
Click on the first or last page to see other STR-DE725 service manuals if exist.