Sony SA-W2500 - Schematic Diagram - MAIN Board

88
SA-W2500/W3000/W3800
SA-W2500/W3000/W3800
1-4. SCHEMATIC DIAGRAM
– MAIN BOARD –
IC500
PROTECTOR
W3000/W3800
W2500
W3000/W3800
W2500
W2500
W3000/W3800
W2500
W3000/W3800
EXCEPT
E51
E51
T
2
0
2
Q
5
0
5
Q
7
1
0
Q
7
0
1
Q
7
0
2
Q
7
0
3
Q
7
0
5
Q
7
0
4
Q
7
1
1
R
Y
5
0
1
C
5
0
5
C
7
0
9
C
7
1
0
C
N
P
5
0
1
Q
7
0
6
Q
7
3
1
Q
7
0
7
Q
7
0
8
Q
7
0
9
C
5
1
0
C
7
0
3
C
5
0
6
C
5
0
8
C
5
0
9
C
7
0
2
R
5
0
7
R
7
2
2
C
N
P
4
0
1
C
7
1
2
C
N
P
9
0
6
R
5
1
9
C
7
1
1
R
5
1
3
R
7
0
9
C
7
1
3
R
7
0
6
R
7
0
5
R
7
0
7
R
7
1
7
R
7
0
1
R
7
1
9
R
5
1
4
R
5
1
5
R
5
1
6
R
7
0
8
R
5
0
9
R
7
0
3
R
7
1
8
R
5
1
2
C
7
0
1
C
7
0
7
C
7
1
4
C
7
0
6
C
5
0
7
C
5
1
3
C
6
0
1
C
5
0
4
C
7
0
8
R
5
0
8
R
7
1
1
R
7
1
6
R
7
1
Q701-707
A - CLASS
POWER DRIVE
Q708-711
POWER AMP
OVER CURRENT
DETECT
5
R
7
2
1
R
7
2
0
R
7
1
0
R
7
1
3
R
7
1
4
D
7
0
3
D
7
0
4
D
8
0
1
D
7
0
1
D
7
0
2
D
7
0
5
D
7
0
6
C
7
0
5
R
5
0
6
R
5
1
0
R
7
1
2
C
6
0
2
C
7
0
4
R
5
0
0
R
7
2
3
C
8
0
7
C
8
0
8
R
5
1
1
R
7
0
4
JW910
C
8
0
3
C
8
0
3
C
8
0
4
,
8
0
4
C
N
6
0
1
C
5
1
1
C
8
0
1
C
8
0
2
R
7
2
4
R
8
0
1
R
8
0
2
R
7
2
6
R
7
2
5
R
7
0
2
R
7
0
2
D
5
0
5
D
5
0
3
D
5
0
4
D
5
0
2
S
P
1
0
1
D
8
0
5
D
8
0
4
D
8
0
2
D
8
0
3
C
8
0
6
C
8
0
5
D
6
0
1
D
6
0
3
D
6
0
4
D
6
0
2
S
U
B
T
R
A
N
S
F
O
R
M
E
R
2
S
A
1
1
7
5
2
S
A
1
1
7
5
2
S
A
9
8
8
2
S
A
9
8
8
2
S
A
9
8
8
2
S
C
2
7
8
5
2
S
A
1
1
4
5
2
S
C
3
6
2
3
1
2
V
S
P
K
R
L
Y
2
2
5
0
V
2
2
1
0
0
V
4
7
5
0
V
2
P
2
S
C
2
7
8
5
2
S
C
1
8
4
1
2
S
C
2
7
0
5
M
P
1
6
2
0
M
N
2
4
8
8
4
7
5
0
V
2
2
0
1
0
V
1
0
0
1
0
V
1
0
5
0
V
4
7
5
0
V
1
0
10
0
V
2
2
0
1
/2
W
0
.2
2
6
P
1
0
0
p
3
P
V
H
0
.2
2
1
0
0
p
2
2
k
2
2
k
4
7
p
1
8
0
3
3
0
3
3
0
5
6
0
1
k
2
.2
k
1
0
k
1
0
k
1
0
k
1
0
k
2
2
k
4
7
k
4
7
k
1
0
0
k
2
2
0
p
2
2
0
p
2
2
0
p
1
0
p
0
.0
2
2
0
.0
2
2
0
.1
2
2
0
p
5
0
V
1
0
0
p
1
0
1
0
1
0
4
7
1
0
0
1
0
0
1
5
0
1
8
0
1
8
0
MAIII-TX
MAIII-TX
MAIII-TX
MAIII-TX
MAIII-TX
MAIII-TX
D
6
S
B
A
2
0
0
.0
0
2
2
1
5
0
k
1
/1
0
W
1
5
0
k
4
7
k
2
2
0
0
1
6
V
2
2
1
0
0
V
1
0
k
4
.7
k
1
0
0
0
2
5
V
1
0
0
0
2
5
V
1
0
OTHERS
4
7
0
0
6
3
V
6
8
0
0
7
1
V
1
2
P
0
.1
0
.1
1
0
0
V
0
.1
1
0
0
V
2
.2
k
2
.2
k
4
7
470
M
A
1
1
1
-T
X
M
A
1
1
1
-
T
X
M
A
1
1
1
-
T
X
M
A
1
1
1
-T
X
S
P
E
A
K
E
R
1
S
R
1
5
4
-4
0
0
T
E
-
2
5
1
S
R
1
5
4
-
4
0
0
T
E
-2
5
1
S
R
1
5
4
-
4
0
0
T
E
-
2
5
1
S
R
1
5
4
-4
0
0
T
E
-
2
5
0
.1
0
.1
1
S
R
1
5
4
-4
0
0
T
E
-
2
5
1
S
R
1
5
4
-
4
0
0
T
E
-2
5
1
S
R
1
5
4
-
4
0
0
T
E
-
2
5
1
S
R
1
5
4
-
4
0
0
T
E
-2
5
A
C
S
U
P
P
L
Y
+
B
OUTPUT SGL
+
IN
-
IN
+
B
-
B
-
B
O
V
E
R
C
U
R
R
E
N
T
*1
*1
R
7
0
4
1k
1.2k
12k
22k
*2
*3
R
7
2
4
*3
*4
1 1/2W
1 1/2W
*4
*4
*2
µPC1237C-A
IC500
5W
INPUT CONTROL
BOARD
(Page 6)
INPUT CONTROL
BOARD
(Page 6)
MAIN POWER
TRANSFORMER
T1
(Page 6)
A
B
C
1 2 3 4
7
8
OVER
LOAD DET
F/F
OFFSET DET
LATCH
AUTORESET
V
CC ON
MUTE
AC OFF
DET
V
CC
OVER
LOAD
DC
DETECT
RESET AC OFF
RELAY
DRIVER
VCC ON
MUTE
GND
5
6
IC500 uPC1237C-A
• IC Block Diagrams