2
A
B
C
D
E
G
H
I
J
1
3
4
5
7
YST-SW216
6
10
■
SCHEMATIC DIAGRAM
★
All voltages are measured with a 10M
Ω
V DC electronic volt meter.
★
Components having special characteristics are marked
s
and must be replaced
with parts having specifications equal to those originally installed.
★
Schematic diagram is subject to change without notice.
IC1
: STK404-070Y60W
AF Power Amp
1
3
2
4
5
6
7
8
9
10
R1
R4
R5
C1
C2
D1
TR3
TR5
R3
R6
TR4
SUB
R2
TR1
TR2
TR6
TR7
TR8
1
10
STK404-070Y60W
1
9
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
2SB1642
2SD2531
1SR139,400
1SS133,176
MTZJ15C
MTZJ24B
MTZJ5.6B
2SA970
2SC2240
2SC2878
µ
PC4570HA-A
Anode
Cathode
E
C B
B C
E
D3SBA20
IC4~6
:
µ
PC4570HA-A
Dual OP-Amp
Vcc
Vo
1
-Vm
1
+Vm
1
V
EE
+Vm
2
-Vm
2
Vo
2
Vcc
1
2
3
4
5
6
7
8
9
+
+
-
-
1
2
+
–
0.3
-35.7
0.1
0.1
24.2
1.1
-1.1
1.7
14.2
-36.0
35.9
0
0
0.3
0.2
0.2
-0.1
-0.1
0.3
0.3
0.3
0.3
0.3
0.3
0
0
14.2
-13.9
0
0
0
0
0
0
-10
1.3
0.1
36.0
30.2
30.2
14.2
14.8
0
0
-14.5
-13.9
-30.4
-30.4
-36.0
AC 53.3
-34.3
-14.0
0
0
0
-1.9
0
-14.0
0
0
0
14.2
0
0
0.8
0.8
1.3
0.8
0
35.8
35.8
-10.0
35.9
0
0
0.3
0
C91
s11
L.P.F.
L.P.F.
DRIVER
R, L models
MAIN (1)
MAIN (2)
MAIN (10)
MAIN (6)
MAIN (7)
MAIN (6)
MAIN (5)
MAIN (3)
VOLUME
H.P.F.
POWER AMP
A.N.I.C
LIMITER
PROTECTION
POWER
SUPPLY
REGULATOR
POWER
INPUT 1/OUTPUT
INPUT 2
U, C, A, B, G models
s11
C91
X
X
0.01
X
w w w . x i a o y u 1 6 3 . c o m
Q Q 3 7 6 3 1 5 1 5 0
9
9
2
8
9
4
2
9
8
T E L
1 3 9 4 2 2 9 6 5 1 3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299