Sony STR-DE725 Service Manual ▷ View online
STR-DE725
— 19 —
— 20 —
3-7. SCHEMATIC DIAGRAM — VIDEO SECTION —
• See pages 61 for IC Block Diagrams.
STR-DE725
— 21 —
— 22—
3-8. PRINTED WIRING BOARD — AUDIO SECTION —
• See page 7 for Circuit Boards Location.
Ref. No.
Location
IC303
G-8
IC408
D-6
IC409
C-6
IC410
B-6
• Semiconductor
Location
E
K
S
D
F
A
1-670-011-
11
(13)
1-670-015-
11
(13)
1-670-000-
11
(13)
1-670-001-
11
(13)
AUDIO BOARD
VOLUME
BOARD
BOARD
BALANCE BOARD
TUNER BOARD
IN
PHONO
R
L
IN
CD
R
L
REC OUT
REC OUT
MD/DAT
R
L
IN
R
L
TAPE
R
L
IN
R
L
J305
J304
BALANCE
MASTER VOLUME
4
1
30
16
1
15
1
1
1
1
1
10
11
11
5
1
C382
8
1
8
1
8
16
R108
(Page 25)
(Page 43)
(Page 26)
(Page 26)
(Page 29)
(Page 25)
TM301
1
2
A
B
C
D
E
F
G
H
I
J
3
4
5
6
7
8
9
10
11
12
STR-DE725
— 23 —
— 24 —
3-9. SCHEMATIC DIAGRAM — AUDIO SECTION —
STR-DE725
— 25 —
— 26 —
3-10. PRINTED WIRING BOARD — INPUT SECTION — •
See page 7 for Circuit Boards Location.
Ref. No.
Location
D301
F-10
IC301
C-4
IC302
D-4
IC304
E-6
IC401
C-12
IC402
B-12
IC403
D-12
IC404
E-4
IC405
E-12
IC406
D-12
IC407
D-12
IC414
B-11
IC415
C-11
IC416
D-11
IC501
C-9
IC601
D-7
IC701
C-7
Q301
F-11
Q302
E-11
Q303
E-11
Q304
D-11
Q352
E-11
Q353
D-10
Q354
D-11
Q501
C-10
Q503
C-10
• Semiconductor
Location
1-670-026-
11
(12)
INPUT BOARD
IN
IN
PHONO
R
L
R
L
R
L
R
L
IN
CD
REC
OUT
OUT
TAPE/MD
G
I
D
E
R
H
V
K
F
1
10
1
3
1
2
E
E
E
E
E
E
E
1
8
9
16
1
8
9
16
1
8
9
16
1
3
1
3
1
1
8
1
8
1
8
3
1
8
3
3
1
1
15
16
30
1
5
5
4
8
1
1
1
15
1
13
1
6
1
15
1
1
14
15
E
E
16
(Page 14)
(Page 34)
(Page 22)
(Page 14)
(Page 21)
(Page 43)
(Page 22)
(Page 22)
(Page 18)
1
2
A
B
C
D
E
F
3
4
5
6
7
8
9
10
11
12
13
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