Yamaha FSW150 Service Manual - Page 16

L.p.f., H.p.f., Limiter, Regulator, A.n.ic, Power Amp.

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Page 16 highlights

A B C D E F G H I J K L M N YST-FSW150/YST-FSW050 1 MAIN YST-FSW050 2 INPUT 3 JK1 SYSTEM CONNECTOR 4 L.P.F. +15.0 0 IC1 0 0 5 MAIN (3) 6 (R, L models) MAIN (8) W11B POWER TRANSFORMER W7B W10B1 W12B 7 W13B W10B2 W14B W6B W10B3 W6A 8 W7A MAIN (6) CB12 CB11 W13A W11A 9 W14A W12A VOLTAGE SELECTOR # All voltages are measured with a 10MΩ/V DC electronic voltmeter. # Components having special characteristics are marked s and must be replaced with parts having specifications equal to those originally installed. 10 # Schematic diagram is subject to change without notice. 16 MAIN (1) POWER AMP. IC3 MAIN (4) W1 CB1 3.3K 3.3K L.P.F. +15.0 0 IC6 0 0 MAIN (2) -15.1 0 0 IC2 0 A.N.IC +15.1 0 0 IC2 0 +34.7 0 0 +34.7 +34.7 0 CB4 - + 0 -15.1 IC1 0 0 W2 CB2 s17 s16 CB3 W3A W3B (U, C, T, K, A, B, G, J models) MAIN (7) POWER TRANSFORMER W7B W10B1 W10B2 W6B W10B3 AC IN H.P.F. 0 IC6 0 0 -15.1 LIMITER +15.0 0 0 0 00 0 0 00 0 0 0 -15.1 +12.6 0 REGULATOR +15.0 IC4 +28.9 -15.1 -29.6 -34.5 IC5 0 0 0 0 +29.3 +34.8 -34.9 -34.9 CB8 W8 +23.9 0 W9 CB9 W10A1 POWER SUPPLY W10A2 -34.8 +34.7 W10A3 W6A CB6 CB7 W7A CB5 PROTECTION +1.3 +1.3 -7.1 0 0 0 +0.8 +1.3 +1.3 0 +0.7 0 +0.7 0 DRIVER 00 0000 +15.0 +14.4 0 0 +14.4 0 0 AC 51.2V +0.2 +0.2 0 -34.3 +15.0 +1.8 +1.2 +1.2 -34.8 +34.7 0 0 OUT1 +IN1 -IN1 -Vcc +IN2 -IN2 OUT2 +Vcc DRIVER WOOFER IC1, 2, 6: NJM4558L Dual operational amplifier 1 23456 78 IC3: STK404-120 Power amplifier TR7 R1 TR1 TR2 R2 TR6 R4 R5 TR8 C2 C1 TR5 TR3 TR4 D1 R3 R6 PT1 SUB 1 2 3 4 5 6 7 8 9 10 11 12 IC4: NJM78M15FA Voltage regulator INPUT OUTPUT IC5: NJM79M15FA Voltage regulator COMMON COMMON OUTPUT INPUT s16 L2 s17 J502 O O PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS. 2SA970 2SA1015-Y 2SC1815 2SC2240 2SC2878 1SR139 1SR400 Anode E CB 1: Emitter 1 2: Collector 2 3 3: Base ECB ECB Cathode 1SS133 1SS176 MTZJ5.6B MTZJ12C MTZJ24B Anode Cathode D3SBA20 4A 200V 1 2 34 NJM4558L 1 NJM78M15FA NJM79M15FA STK404-120 8 12 3: IN 3: COM 1: OUT 2: COM 1: OUT 2: IN 1 V723510 JG-11-T FG64410 0.01/50 FG65122 22P O O

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JK1
IC1
IC1
W2
W1
W3B
W3A
CB3
CB2
CB1
IC6
IC6
IC4
IC2
IC2
IC3
CB4
W8
W9
W10A3
W10A2
W10A1
CB8
CB9
IC5
CB6
CB5
W6A
W10B3
W10B2
W10B1
W10B3
W6A
W6B
W14B
W13B
W12B
W7B
W11B
W14A
W13A
CB11
CB12
W12A
W11A
W7A
W10B2
W10B1
W7A
CB7
W6B
W7B
A
1
2
3
4
5
6
7
8
9
10
B
C
D
E
F
G
H
I
J
K
L
M
N
YST-FSW150/YST-FSW050
16
★
All voltages are measured with a 10M
Ω
/V DC electronic voltmeter.
★
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.
MAIN
YST-FSW050
AC 51.2V
0
0
+15.0
0
0
0
-15.1
0
0
0
0
+15.0
0
0
0
-15.1
0
0
+15.0
0
0
-15.1
0
0
+12.6
-15.1
-29.6
+15.0
+29.3
+34.8
-34.9
-34.9
0
0
0
0
0
0
0
0
0
0
+28.9
-34.5
0
-7.1
0
0
+1.3
+1.3
+0.7
+0.7
+0.8
+1.3
+1.3
0
0
0
0
0
0
0
0
0
0
0
0
+15.0
+14.4
+14.4
0
0
+34.7
-34.8
+23.9
0
0
-15.1
0
0
0
+15.1
0
0
0
+34.7
+34.7
+34.7
0
0
+0.2
+0.2
0
+1.8
-34.3
+15.0
+1.2
+1.2
-34.8
+34.7
0
0
V723510
JG-11-T
FG64410
0.01/50
FG65122
22P
s16
s17
L2
J502
O
O
O
O
PIN CONNECTION DIAGRAM OF TRANSISTORS, DIODES AND ICS.
IC5
:
NJM79M15FA
Voltage regulator
COMMON
OUTPUT
INPUT
INPUT
OUTPUT
COMMON
IC4
: NJM78M15FA
Voltage regulator
IC1, 2, 6
: NJM4558L
Dual operational amplifier
8
7
6
5
4
3
2
1
OUT
1
–
Vcc
+IN
2
–
IN
2
OUT
2
+Vcc
+IN
1
–
IN
1
IC3
: STK404-120
Power amplifier
SUB
PT1
TR3
C1
C2
R2
R1
TR1
TR2
TR6
TR7
TR8
TR5
TR4
D1
R3
R6
R5
R4
8
11
12
1
2
5
4
6
7
9
10
3
NJM79M15FA
1: OUT
2: IN
3: COM
NJM78M15FA
1: OUT
2: COM
3: IN
NJM4558L
1
8
STK404-120
1
12
1SR139
Anode
Cathode
1SR400
1SS133
Anode
Cathode
1SS176
D3SBA20 4A 200V
1
2
3
4
MTZJ5.6B
MTZJ12C
MTZJ24B
E
C
B
2SA970
2SA1015-Y
1
2
3
3: Base
2: Collector
1: Emitter
2SC1815
E
C
B
E
C
B
2SC2240
2SC2878
MAIN (3)
MAIN (4)
MAIN (2)
MAIN (1)
MAIN (7)
MAIN (8)
MAIN (6)
AC IN
POWER
TRANSFORMER
POWER
TRANSFORMER
INPUT
SYSTEM
CONNECTOR
VOLTAGE
SELECTOR
PROTECTION
DRIVER
DRIVER
WOOFER
POWER
SUPPLY
(R, L models)
(U, C, T, K, A, B, G, J models)
L.P.F.
H.P.F.
LIMITER
REGULATOR
A.N.IC
POWER AMP.
L.P.F.
3.3K
s17
s16
3.3K
–
+