Ic Block Diagram （Ic ブロック図 - Yamaha ICP1 Service Manual

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IC BLOCK DIAGRAM （IC ブロック図）
TC74VHC08FT (XV891A00)
Quad 2 Input AND
DM: IC102
1A
1
1B
2
1Y
3
2A
4
2B
5
2Y
6
VSS
7
TC74VHC138FT (XZ495A00)
3 to 8 Demultiplexer
DM: IC401
1
A
TE
L 13942296513
Select
2 B
B
3
C C
G2A 4
G2A
Enable
5
G2B
G2B
6
G1
G1
Output
7
Y7 Y7
8
GND
M5291FP-600C (XR858A00)
DC-DC Converter
DM: IC303
1
Switch-Collector
Switch-Emitter
2
Capacitor
www 3
1.17V
reference
voltage
Ground 4
.
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TC74VHC14FT (XV890A00)
Hex Inverter
DM: IC304
VDD
14
4B
13
4A
12
4Y
11
3B
10
3A
9
3Y
8
TC7WH04FU (XY363A00)
Triple Inverter
DM: IC101
16 Vcc
A
Y0 15
YO
14
Y1 Y1
13 Y2
Y2
Output
Y3 12
Y3
11
Y4
Y4
Y5 10 Y5
Y6
9 Y6
8 Driver
Q
S
R
7 Peak current detect
Generator
Comparator
6 Power supply
+
x ao
y
5 Input
i
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8
1
1A 14 VDD
2 13
1Y
6A
3 12
2A
6Y
4 11
2Y 5A
5
10
3A
5Y
6
9
3Y
4A
7
GND 8
4Y
Q Q
1A Vcc
1 8
3 6 7 1 3
3Y 1Y
2 7
2A 3A
3 6
GND 2Y
4 5
u163
.
2 9 9 4 2 8
TC74VHC74FT (XV892A00)
Dual D-Type Flip-Flop
DM: IC302
1
1CLR
2
1D D
D
3
1CK CK
4
1PR PR
CK
5 Q
1Q
PR
6
1Q Q Q
7
GND
Q
INPUTS
PR CLR CLK D
L H X X
H L X X
L L X X
H H f H
H H f L
H H L X
NJM4558M-DTE2 (XV130A00)
Dual Operational Amplifier
DM: IC301
Output A
1 +V
1 5 0 5 8 2 9 9 4
Inverting
2
Input A - +
Non-Inverting
3
+ -
Input A
-DC Voltage Supply
4 -V
m
co
ICP1
9 9
14
VCC
13
2CLR
12
2D
11 2CK
10
2PR
9
2Q
8
2Q
OUTPUTS
Q Q
H L
L H
H H
H L
L H
Q Q
O O
+DC Voltage
8
2 8 9 9
Supply
Output B
7
Inverting
6
Input B
Non-Inverting
5
Input B
11