Ic Block Diagram - Yamaha DISKLAVIER MX1Z Service Manual

MX1Z

IC BLOCK DIAGRAM

SN74HCU04NSR (XC723A00)
Hex Inverter
HAMMER SENSOR: IC9
1
14
1A
2 13
1Y
3
12
2A
4
11
2Y
5
10
3A
6
3Y
7
Vss
HD74HC123AFPTR (XL106A00)
Dual Retriggerable Single Shot
EMK-CTL: IC402
PK-CTL: IC8
1 16
1A
2 15
1B
3 14
1 CLR
Q Q
1Q 4 13
5 12
2Q
Q Q
6 11
2 Cext
CLR
7 10
2 Rext /Cext
GND 8
TC74AC574F(TP1) (XR237A00)
Octal D-Type Flip-Flop
EMK-CTL: IC504
Output
1 20
Control
D Q
2 19
D0
CK OE
D Q
3 18
D1
CK OE
D Q
4 17
D2
CK OE
5 D Q 16
D3
CK
OE
D Q
D4 6 15
CK
OE
D Q
7 14
D5
CK OE
D Q
8 13
D6
CK OE
D Q
9 12
D7
CK OE
GND 10 11
20
SN74HCU14NSR (XC725A00)
TC74AC14F (XS343A00)
Hex Inverter
HAMMER SENSOR:
EMK-CTL:
1A
VDD
1Y
6A
2A
6Y
5A 2Y
3A
5Y
9
4A 3Y
8
4Y GND
HD74AC138FPEL (XP446A00)
3 to 8 Demultiplexer
EMK-CTL: IC401
Vcc
Select
1 Rext /Cext
Cext
C
1Q
G2A
Enable
2Q
G2B
CLR
G1
Output
2B
Y7
9 2A
GND
SN75C1168NSR (XU073A00)
Line Driver/Receiver
EMK-CTL: IC305
Vcc
1B
Q0 1A
Q1
1R
Q2 1DE
Q3
2R
Q4
2A
2B
Q5
Q6 GND
Q7
Clock
IC10
IC101, 203
1
14
VDD
2 13
6A
3
12
6Y
4
11
5A
5
10
5Y
6
9
4A
7 8
4Y
1
16
A Vcc
A
2
B Y0 15
B YO
3
14
C Y1
Y1
4 13
G2A Y2
Y2
Output
5 G2B 12
Y3
Y3
6
11
G1 Y4
Y4
7
Y7 Y5 10
Y5
Y6
8 9
Y6
1 16
Vcc
2
15
1D
3 14
1Y
4
13
1Z
5
12
2DE
6 11
2Z
7
10
2Y
8
9
2D
TC74AC32F (XR771A00)
Quad 2 Input OR
EMK-CTL: IC201
1A 1 14 Vcc
1B 2 13 4B
1Y 3 12 4A
2A 4 11 4Y
2B 5 10 3B
2Y 6 9 3A
7 GND 8 3Y
TC74AC541F (XS344A00)
Octal 3-State Buffer
EMK-CTL: IC505
1
G1 20
Vcc
2
A1 19 G2
A2 3
18 Y1
A3 4 17
Y2
A4 5 16
Y3
6
A5 15 Y4
A6 7 Y5
14
A7
8 13 Y6
A8 9
12 Y7
10 11 Y8
GND
TC74HC4040F (XR684A00)
12-Stage Binary Ripple Counter
EMK-CTL: IC503
1
16
Q12 Q12 VDD
2
15
Q6 Q6 Q11 Q11
3 14
Q5 Q5 Q10 Q10
4
13
Q7 Q7 Q8 Q8
5
12
Q4 Q4 Q9 Q9
6
11
Q3 Q3 CL CLR
7
10
CK
Q2 Q2 Input Pulses (
8
9
Vss Q1 Q1
)