Yamaha YST-SW215, Руководство по обслуживанию

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A B C D E F G H I J K L
YST-SW215
11
SCHEMATIC DIAGRAM
1
2
3
4
5
6
7
8
9
8 7 6 5 4 3 2 1
OUT
1
–Vcc
+IN
2
–IN
2
OUT
2
+Vcc
+IN
1
–IN
1
IC11: NJM4558L
Dual OP-Amp
1
8
IC2, 4, 7, 10: µPC4570HA
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
1
9
IC3 : TA7317P
Protector
1
6
2
3
8
7 4
9
Muting
circuit
Constant voltage
power supply circuit
Schmidt
circuit
Power supply
ON/OFF
detecting circuit
Discharging
circuit
5
Substrate
Overcurrent
detecting circuit
OR circuit
±Current voltage
detecting circuit
GND
1
9
Relay drive
circuit
IC201: LB8555D
Timer
1
VCC
8
DISCHARGE
7
CONTROL VOLTAGE 5
THRESHOLD
6
+
–
TRIGGER
GND
2
RESET 4
+
–
R
S Q
1
4 8
OUTPUT
3
V
IN
V
OUT
GND
OUT
COM IN
IC202 NJM78L08A
Voltage Regulator
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
2SB1642 2SK304 2SC4688 1SR139
1SS133
MTZJ12C
MTZJ15C
MTZJ24B
S1NB20 2SA1015
2SA970
2SC1815
2SC2240
2SC2878
D3SBA20 NJM4558L NJM78L08A m PC4570HA TA7317P STK404-120 LB8555D
Anode
Cathode
~
+
~
–
+
–
E C
B
B C E
B C
E
S G
D
IC1: STK404-120
Power Amp.
H All v oltages are measured with a 10M /V DC electric volt meter.
H Components ha ving special characteristics are marked
s
and must be replaced
with parts having specifications equal to those originally installed.
H Schematic diag ram is subject to change without notice.
1
12
0
0
0
1.4
0
0
0.1
0.7
0
0.1
-14.6
14.8
1.9
0
0
0
0
0
0
0
0
0
0
0
1.5 6.6
8.0
8.0 4.6 4.6 5.4
0
4.9
-14.6
0
0
0
0
0
0
0
0
0.1
0.1
0.1
3.9
6.8
6.7
8.0
3.9
14.8
-0.1
14.8
0
0
14.0
0.1
0.7
-14.6
10.7
10.7
10.7
10.0
0
-22.7
0
0
50.1 -5.2
6.2
6.1
13.3
0
0
0
0.7
0.1
13.2
-42.6 -14.6
-15.1
-15.1
0
0
15.3
15.3
41.9
14.8
6.0
24.2 1.1
6.6
-0.3
-0.3
0.2
0.6
0.7
0
8.0
0.1
13.2
-0.3
0 0 0 0
-0.7
1.1
1.4
3.1
0
0
0
0 0
0
0
0 0
0 0
0
-14.8
14.9
0
0
0.1
0.1
0.3 0.3
0
-49.6
-50.2
-1.1
14.8
1.2
1.2
50.1
0 0
0
0
50.0
50.3
-0.3
50.1
0
0
0
0
-0.2
14.8
0
0
0 -0.2
0
-0.2
-14.6
-1.8
0
AC 12.5
AC 73.9
L.P.F.
B.P.F
AUTO POWER ON / OFF CIRCUIT
L.P.F
H.P.F L.P.F
LIMITER
POWER AMP
A.N.I.C.
PROTECTION
PROTECTION
REGULATOR
REGULATOR
POWER SUPPLY
SUB POWER SUPPLY
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
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