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8
8
SA-W2500/W3000/W3800
SA-W2500/W3000/W3800
1-4. SCHEMATIC DIAGRAM
– MAIN BOARD –
IC500
PROTECTOR
W3000/W3800
W2500
W3000/W3800
W2500
W2500
W2500
W3000/W3800
W3000/W3800
W2500
W3000/W3800
W3000/W3800
EXCEPT
E51
E51
E51
T202
Q505
Q710
Q701
Q 702
Q703
Q 705
Q 704
Q 711
RY501
C 505
C 709
C710
C NP501
Q 706
Q 731
Q 707
Q 708
Q 709
C510
C703
C 506
C508
C 509
C 702
R507
R722
C NP401
C 712
C NP906
R519
C711
R513
R709
C713
R706
R705
R707
R717
R701
R719
R514
R515
R516
R708
R509
R703
R718
R512
C 701
C 707
C 714
C 706
C
5
0
7
C
5
1
3
C 601
C504
C708
R508
R711
R716
R71
Q701-707
A - CLASS
POWER DRIVE
Q708-711
POWER AMP
OVER CURRENT
DETECT
5
R721
R720
R710
R713
R714
D703
D704
D801
D
7
0
1
D
7
0
2
D
7
0
5
D
7
0
6
C705
R506
R
5
1
0
R712
C602
C704
R500
R723
C807
C808
R511
R704
JW910
C 803
C 803
C 804
, 804
CN601
C 511
C801
C802
R724
R801
R802
R
7
2
6
R
7
2
5
R702
R702
D505
D503
D504
D
5
02
SP101
D805
D804
D802
D803
C
80
6
C
8
0
5
D601
D603
D604
D602
SUB TRANSF ORME R
2SA1175
2SA1175
2SA988
2SA988
2SA988
2SC 2785
2SA1145
2SC3623
12V
SPK RLY
22
50V
22 100V
47
50V
2P
2SC2785
2SC1841
2SC 2705
MP1620
MN2488
47 50V
220
10V
100
10V
10
50V
47 50V
10
100V
220
1/2W
0.22
6P
100p
3P
VH
VH
0.22
100p
22k
22k
47p
180
330
330
560
1k
2.2k
10k
10k
10k
10k
22k
47k
47k
100k
220p
220p
220p
10p
0
.0
2
2
0
.0
2
2
0.1
220p
50V
100p
10
10
10
47
100
100
150
180
180
MAIII-TX
MAIII-TX
MAIII-TX
MAIII-TX
MAIII-TX
MAIII-TX
D6SBA20
0.0022
150k
1/10W
1
5
0
k
47k
2200
16V
22
100V
10k
4.7k
1000
25V
1000
25V
10
OTHERS
4700 63V
6800 71V
6800 71V
12P
0.1
0.1
100V
0.1
100V
2
.2
k
2
.2
k
47
470
MA111-TX
MA111-TX
MA111-TX
M
A
1
1
1
-T
X
SPE AKE R
1SR154-400TE -25
1SR154-400TE-25
1SR154-400TE -25
1SR154-400TE -25
0
.1
0.1
1SR154-400TE -25
1SR154-400TE-25
1SR154-400TE -25
1SR154-400TE-25
AC SUPPLY
+B
OUTPUT SGL
+IN
-IN
+
B
-B
-B
OVE R CURRE NT
*1
*1
R704
1k
1.2k
12k
22k
22k
*2
*3
R724
*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
LOAD
DC
DETECT
RESET
AC OFF
RELAY
DRIVER
VCC ON
MUTE
GND
5
6
IC500 uPC1237C-A
• IC Block Diagrams
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