Sony HST-SE581 / SEN-R4820 / SEN-T481 Service Manual ▷ View online
HST-SE581
— 23 —
— 24 —
5-8. PRINTED WIRING BOARDS — SW SECTION —
• See page 9 circuit boards location
1
2
A
B
C
D
E
F
G
H
I
J
3
4
5
6
7
8
9
10
11
12
13
1-669-779-
11
(11)
1-669-778-
11
(11)
1-669-782-
11
(11)
TEN KEY BOARD
DECK A BOARD
DECK B BOARD
1
4
16
1
10
NORMAL
DIRECTION
HIGH
RELAY
DOLBY NR
B OFF
9
6
3
8
5
2
7
4
1
J
F
G
(Page 19)
(Page 20)
(Page 20)
HST-SE581
— 25 —
— 26 —
5-9. SCHEMATIC DIAGRAM — SW SECTION —
DOLBY NR
1/u
HST-SE581
— 27 —
— 28 —
5-10. PRINTED WIRING BOARDS — POWER AMP SECTION —
• See page 9 circuit boards location
1
2
A
B
C
D
E
F
G
H
I
J
3
4
5
6
7
8
9
10
11
12
13
Ref. No.
Location
D151
F-8
D152
C-10
D161
B-8
D162
B-8
D251
E-8
D252
C-10
D351
D-8
D352
C-10
D451
C-4
D452
B-8
D552
C-9
D651
B-8
D951
E-2
D952
B-2
D953
B-2
D955
C-3
D957
C-2
D958
C-2
D959
C-2
D960
C-2
D961
D-7
D971
C-5
D972
C-5
IC151
G-6
IC351
I-3
IC451
I-4
IC651
G-8
Q151
I-5
Q152
I-4
Q153
I-5
Q154
H-5
Q155
G-5
Q161
B-10
Q191
B-8
Q192
B-7
Q251
I-7
Q252
I-6
Q253
I-7
Q254
H-7
Q255
G-7
Q261
B-10
Q291
B-8
Q351
B-9
Q451
B-7
Q651
I-9
Q652
I-9
Q653
I-9
Q654
H-8
Q661
B-9
Q670
G-9
Q921
G-4
Q954
C-4
• Semiconductor
Location
POWER BOARD
HP BOARD
1-669-772-
11
(11)
1-669-773-
11
(11)
C
B
12
1
1
12
E
E
E
E
1
2
14
15
1
5
1
5
B
C
E
E
E
E
E
E
E
E
B
C
E
B
C
E
B
C
E
B
C
E
B
C
E
1
9
1
12
E
E
E
E
E
E
E
E
SUPER
WOOFER
FRONT
SPEAKER
R
L
SUPER
WOOFER
REAR
SPEAKER
R
L
TM151
TM351
J701
PHONES
16
1
5
K
(Page 17)
(Page 18)
(Page 35)
HST-SE581
— 29 —
— 30 —
5-11. SCHEMATIC DIAGRAM — POWER AMP SECTION —
• See page 39 for IC Block Diagrams.
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