Yamaha YST-SW010, Руководство по обслуживанию

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A B C D E F G H I J K L
YST-SW030/YST-SW010
13
SCHEMATIC DIAGRAM
1
2
3
4
5
6
7
8
9
YST-SW030
★
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.
★ 電圧は、内部抵抗10MΩの電圧計で測定したものです。
★
s
印のある部品は、安全性確保部品を示しています。部品の交換が必要な場合、パーツリス
トに記載されている部品を使用してください。
★ 本回路図は標準回路図です。改良のため予告なく変更することがございます。
1
9
1
9
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
2SB1642
2SD2531 2SK304 1SR139-400
1SS133
1SS176
MTZJ15.0C
MTZJ24.0B 2SA970
2SAKTA1266
2SC2240
2SCKTC3198
µ
PC4570HA TA7317P
Anode
Cathode
E
C B
B C
E
S
G
D
STK404-120
1
12
RBV-402
–
+
IC1: STK404-120
Power Amp.
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
R1
R2
C1
TR1
TR7
TR8
TR6
TR5
R6 R3
SUB
PT1
R4
C2
R5
TR3 TR4 D1
TR1
Discharging
circuit
5
Substrate
Overcurrent
detecting circuit
OR circuit
±
Current voltage
detecting circuit
GND
Relay drive
circuit
IC2, 4, 5:
µ
PC4570HA
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 2 3 4 5 6 7 8 9 10 11 12
0
0
0
0
0
0
0
0
0
-14.3
14.3 -14.4
-1.8
0
14.3
0
0
0
0 0.1
14.6
0
0
0.1
-14.6
0
0
0
0
0
0
0
0
0
0.2 0.2
0
-41.4
14.6
1.1
-0.7
0 0 0
-0.7
1.1
0
1.4 3.2
1.8
1.1
-41.6
41.5
0 0
0
0
41.4
41.4
41.5
-0.7
24.7 1.1
0
0
-14.5
-0.2 0
0 -0.2
0
0
14.5
0
-0.3
-1.9
0
0
-37.3
0
0
0
-41.6 41.5
14.5 38.6
15.0
15.0
0
0
-15.0
-15.0
-38.9 -14.5
AC 61.5
MAIN (3)
INPUT
MAIN (1)
MAIN (9) MAIN (10)
MAIN (6) MAIN (7) MAIN (6)
MAIN (2) MAIN (2) MAIN (4)
L, R, T, K models
3
4
9
2
7
6
5
8
7
6 8
9
6
7
5
8
4
3
1
2
3
2
5
4
L.P.F.
VOLUME
L.P.F. H.P.F.
LIMITER
PROTECTION
POWER AMP.
A.N.I.C.
POWER SUPPLY
REGULATOR
BE
L=180
WH
L=180
s9
s9
s9
DRIVER
L=160
WC05070