Yamaha YST-SW315, Руководство по обслуживанию

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A B C D E F G H I J K L
YST-SW315
13
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
IC4, 7, 8, 10: 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
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.
2SA1837
2SC4793 2SK304 2SA1492
2SC3856
2SC4688 1SR139
1SS133
EL02ZLF
MTZJ12C
MTZJ24B
MTZJ3.6B
S2L20U S1NB20 2SA1015
2SA1145
2SA970
2SC1815
2SC2240
2SC2705
2SC2878 D5SBA20
NJM4558L NJM78L08A
µ
PC4570HA TA7317P NJM79M12FA NJM78M12FA LB8555D
Anode
Cathode
~
+
~
–
+
–
E
C B
B C
E
B
C E
S
G
D
IC1: NJM79M12FA
Voltage Regulator
IC6: NJM78M12FA
Voltage Regulator
COMMON
OUTPUT
INPUT
★
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.
1: OUT
2: IN
3: COM
1: OUT
2: COM
3: IN
INPUT
OUTPUT
COMMON
AC 12.4
AC 27.9
AC 102.4
0
11.9
0
0
0
0
11.9
0
0
-11.8
0
0
3.4
3.4
3.4
2.7
-0.1
-0.1
6.0
0.7
0
0
0
-11.8
0
0
0
0
4.0
0.1
7.9
6.8
6.7
4.0
0
0
0
0.7
7.3
7.9
0.1
0.1
1.9
0
0
5.8
1.4
-11.8
11.9
0
0
0
0
0
0
1.9 5.9
6.6
0
1.4 6.6
7.9
7.9 5.6 5.6
5.3
69.7
0.7
69.8 69.8
69.3
1.8 1.8
3.8
1.8
1.0
-1.6
69.8
70.1
1.2
1.2
4.4
4.4
70.1
67.8
69.5
70.1
70.1
0.2 0.2
0.7
0.7
-69.6
-69.6
-69.6
-69.6
-69.5
-69.6
-1.6
-1.6
-1.0 -1.0
-4.3
-4.3
-3.7
-70.4
-70.3
-69.6
-68.9
-68.9
-70.3
-70.3
-69.6
-69.6
0
0
0 0.1
0.1
-11.8
0
0
0
0
0
11.9
0.1 0.1
0 0
0 0
0 0
0
0
0
0.2
0
0
4
3
2
5
0
0
0
0
0
11.9
-18.2
-0.1 -12.5
-12.5 -12.5
-0.6
-5.9
0
18.3 18.3
-18.2 -11.8
-11.8
11.9
-0.2
-0.3
-1.8
-0.2
7.2 13.2
0
0
13.2
13.2
6.2
0.1
6.1
0.1
0.1
0.8
0
24.8
24.8
1.1
1.1
0
70.1
-70.3
-0.6 -0.7
1.0 1.4 3.1 0.1
0 0 0
0
-2.7
-2.7
-2.7
-2.7 -2.3 -70.3
-70.3
70.1
70.1
69.6
69.4
69.4
70.0
69.6
69.6
2.7 3.3
3.4
1.2
0.6
0.7
-0.5
-0.1
-0.1
-0.3
-3.3
-3.7
-70.3
-70.7
-70.0
-70.7
-70.2
-70.2
-70.3
-70.3
-70.2
-69.6
-2.7
-2.7
0.1
0.1
0.1
69.9
70.1
70.1
-0.6
2.7
70.1
70.1
70.1
0.1
0.1
2.7
2.7
2.7
2.7
TIMER
x: NOT USED
O: USED / APPLICABLE
L.P.F.
B.P.F
AUTO POWER ON / OFF CIRCUIT
L.P.F
PRE DRIVE
LIMITER
A.N.I.C
POWER DRIVE
POWER SUPPLY
POWER SUPPLY
PS AMP
PROTECTION
H.P.F L.P.F
SUB POWER SUPPLY
PHASE
B.A.S.S.
HIGH CUT
VOLUME
DRIVER
STANDBY/ON
POWER
INPUT 1 / OUTPUT
INPUT 2