Ic Block; Pin Connection Diagram - Yamaha YST-SW1500 Service Manual

YST-SW1500
I IC BLOCK
IC1, 2, 4, 6, 22, 23: µPC4570HA
Dual OP-Amp
1 2
- + + -
1 2 3 4 5 6 7 8 9
Vcc Vo -Vm +Vm V +Vm -Vm Vo Vcc
1 1 1 EE 2 2 2
IC3: NJM78M15FA
Voltage Regulator
INPUT
OUTPUT
COMMON
IC5: NJM78L05A-T3
Voltage Regulator
INPUT
OUTPUT
GND
I PIN CONNECTION DIAGRAM
• ICs
NJM78L08A NJM78L05A-T3 NJM78M12FA
3: OUT
OUT
3: IN
2: GND
1: IN
IN
1: OUT
COM
2: COM
µPC4570HA
TA7317P LB1641
9
9
1 1
1
22
IC7: NJM78L08A
Voltage Regulator
VIN
VOUT
GND
IC8: SG3525AN
Regulating Pulse Width Modulator
VREF
VC
16
13
Reference U.V.
+VIN 15
Regulator LOCK OUT
OUTPUT A
TO
GROUND 12 11
INTERNAL
CIRCUITRY
OSC OUTPUT
SYNC 3
4
OUTPUT B
RT 6 Q
Oscillator
14
CT 5
Q
DISCHARGE 7
F/F
R
P.W.M
+
S
9 –
COMPENSATION Latch
–
VIN
INV. INPUT 1 –
N.I. INPUT 2 +
ERROR
AMP 50µA
SOFT-START 8 VREF
5k
10
SHUTDOWN
5k
NJM78M15FA NJM79M12FA NJM4558L
3: IN 3: COM
1: OUT 1: OUT
1
2: COM 2: IN
IR2110 SG3525AN LC651152N/F/L
10
7 8
14
16
30
1
1
1
IC9: IR2110
High and Low Side Driver
HV
LEVEL
SHIFT
R Q
VDD 9
S
VDD/VCC
HIN 10 LEVEL
PULSE
SHIFT
GEN
SD 11
VDD/VCC
LIN 12 LEVEL
SHIFT
S
R Q
VSS 13
IC10: NJM78M12FA
Voltage Regulator
INPUT
OUTPUT
COMMON
IC11, 19, 24: NJM4558L
Dual OP-Amp
1 2 3 4 5 6 7 8
• Diodes
1SR139 FMU-12R
1SS133 FMU-34R
Anode
EL1
EL02ZLF-H5K
1:Cathode
MTZJ3.0B
2:Anode
MTZJ5.1C
3:Cathode
MTZJ12.0B
8
Cathode
S2L20U
1
2
3
FMU-12S RBV2506 S1NB20
FMU-34S
+
1:Anode
2:Cathode –
3:Anode
15
–
1
1
2
3 2
3
+
IC13, 16: LB1641
Motor Driver
6
VS
3 2
UV
DETECT
R
PULSE R Q
FILTER
S
7
HO
5 VS
3 VCC
UV
DETECT
IN 1 5 INPUT LOGIC
1
LO
GND
1
DELAY
2 COM
IC14: NJM79M12FA
Voltage Regulator
IC15 : TA7317P
Protector
8
Muting
circuit
Power supply
ON/OFF
detecting circuit
1
OR circuit
Overcurrent
detecting circuit
Discharging
2 ±Current voltage
circuit
3 detecting circuit
7
• Transistors
2SA970 2SC1846S
2SA1015
2SA1689
2SC1815
2SC2240
2SC2878
2SC4449
1
E
2 E C
3 C B
B
GT30J322 2SK304
2SK304E
~
S
~
B
G D
C E
8 10 9 7
4 VZ
IN 2
6
COMMON
OUTPUT
INPUT
9
Constant voltage
power supply circuit
Schmidt Relay drive
6
circuit circuit
Substrate
4 5
GND
2SA1837
2SC4793
B C
E
2SK2378
2SJ406
G
D S