Yamaha YST-SW1500, Руководство по обслуживанию

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YST-SW1500
22
• Diodes • Transistors
FMU-12R
FMU-34R
1
3
2
1:Cathode
2:Anode
3:Cathode
3
2
1
1SR139
1SS133
EL1
EL02ZLF-H5K
MTZJ3.0B
MTZJ5.1C
MTZJ12.0B
S2L20U
Anode
Cathode
S1NB20 RBV2506
+
–
~
+
~
–
FMU-12S
FMU-34S
1
3
2
3
2
1
1:Anode
2:Cathode
3:Anode
2SA970
2SA1015
2SA1689
2SC1815
2SC2240
2SC2878
2SC4449
E
C B
GT30J322 2SK304
2SK304E
B C
E
2SA1837
2SC4793
B
C E
2SC1846S
E C
B
S
G
D
2SK2378
2SJ406
G
D
S
NJM78L08A NJM78L05A-T3 NJM4558L NJM79M12FA
SG3525AN
µ
PC4570HA IR2110 TA7317P LB1641
NJM78M12FA NJM78M15FA
LC651152N/F/L
1
9
1
15
30
1
9
1: OUT
2: COM
3: IN
1
8
1: OUT
2: IN
3: COM
1: OUT
2: COM
3: IN
1: IN
2: GND
3: OUT
OUT
COM
IN
1
10
1
7
14
1
8
16
■
PIN CONNECTION DIAGRAM
• ICs
■
IC BLOCK
IC15 : 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
Relay drive
circuit
IC1, 2, 4, 6, 22, 23:
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
INPUT
OUTPUT
COMMON
IC10: NJM78M12FA
Voltage Regulator
8 7 6 5 4 3 2 1
OUT
1
–
Vcc
+IN
2
–
IN
2
OUT
2
+Vcc
+IN
1
–
IN
1
IC11, 19, 24: NJM4558L
Dual OP-Amp
IC14: NJM79M12FA
Voltage Regulator
COMMON
OUTPUT
INPUT
INPUT
OUTPUT
COMMON
IC3: NJM78M15FA
Voltage Regulator
IC5: NJM78L05A-T3
Voltage Regulator
INPUT
OUTPUT
GND
VIN
VOUT
GND
IC7: NJM78L08A
Voltage Regulator IC13, 16: LB1641
Motor Driver
2 3
P1
5 IN 1
1 GND
4 VZ
6 IN 2
OUT
1
8
VCC 2
10
OUT
2
9
P2
INPUT LOGIC
PRE DRIVER
7
VCC 1
VDD/VCC
LEVEL
SHIFT
S
Q R
Q
S
6 VS
7 HO
5 VS
9 VDD
10 HIN
IC9: IR2110
High and Low Side Driver
S
Q R
13 VSS
12 LIN
11 SD
VDD/VCC
LEVEL
SHIFT
PULSE
GEN
HV
LEVEL
SHIFT
PULSE
FILTER
UV
DETECT
R
R
3 VCC
1 LO
2 COM
UV
DETECT
DELAY
15 +VIN
5 CT
7 DISCHARGE
9 COMPENSATION
1 INV. INPUT
2
N.I. INPUT
6 RT
12 GROUND
Reference
Regulator
Oscillator
U.V.
LOCK OUT
Q
Q
3
SYNC
16
VREF
13
VC
11
OUTPUT A
14
OUTPUT B
F/F
VIN
IC8: SG3525AN
Regulating Pulse Width Modulator
4
OSC OUTPUT
TO
INTERNAL
CIRCUITRY
P.W.M
ERROR
AMP
5k
+
–
–
8 SOFT-START
10 SHUTDOWN
VREF
50 µ A
5k
–
+
R
S
Latch