Ic Block Diagram - Yamaha PF-1000 Service Manual

IC BLOCK DIAGRAM

HD74LV08AFPEL (IS000800)
Quad 2 Input AND
DM: IC002
1A VDD
1 14
1B 4B
2 13
1Y 4A
3 12
2A 4Y
4 11
2B 3B
5 10
2Y 3A
6 9
VSS 3Y
7 8
HD74LVC139FPEL (XS048A00)
Dual 2 to 4 Demultiplexer
DM: IC021
1
1G 16 Vcc
G
2 G 15
1A 2G
A
A
3
14
1B 2A
B
4 B
1Y0 13 2B
Y0
5 Y0
12
1Y1 2Y0
Y1
6 Y1
11
1Y2 2Y1
Y2
7 Y2
1Y3 10 2Y2
Y3
Y3
8
GND 9 2Y3
SN74AHCT1G08DCKR (X0158A00)
Single 2-Input Positive-AND Gate
DM: IC004, 039
A 1 5 Vcc
2
B
3 4
GND Y
FUNCTION TABLE
INPUTS OUTPUT
A B Y
H H H
L X L
X L L
HD74LV21ATELL (X0010A00)
Dual 4 Input AND
DM: IC013
1A Vcc
1 14
1B 2D
2 13
NC 2C
3 12
1C NC
4 11
1D 2B
5 10
1Y 2A
6 9
GND 2Y
7 8
TC74VHCT245AFT (XT744A00)
74LVC245APW (XZ286A00)
Octal 3-State Bus Transceiver
DM: IC001, 015, 017, 020
IC011, 012, 016
1
D1R
Vcc
20
2
19
A1 G
18
3
A2
B1
17
4
A3
B2
16
A4 5
B3
15
A5 6 B4
14
A6
7 B5
13
A7
8
B6
A8 12
B7
9
11
GND B8
10
SN75C1168NSR (XU073A00)
Line Driver/Receiver
DJK: IC002
1B 1 16 Vcc
2
15
1A 1D
3 14
1R 1Y
4
1DE 13 1Z
5
2R 12 2DE
6 11
2A 2Z
7
2B 10 2Y
8 9
GND 2D
SN74HC132NSR (XW792A00)
MM74HC132SJX (XY352A00)
Quad 2 Input NAND
DM: IC028,045
1A VDD
1 14
1B 4B
2 13
1Y 4A
3 12
2Y 4Y
4 11
2A 3Y
5 10
2B 3B
6 9
GND 3A
7 8
HD74LV374AFPEL (IS037400)
SN74LV374ANSR (IS037410)
Octal 3-State D-Type Flip-Flop
DM: IC043
OUTPUT
Vcc
1 20
CONTROL
1Q 8Q
2 19
Q Q
OE OE
D CK CK D
1D 8D
3 18
2D 7D
4 17
D CK CK D
OE OE
Q Q
2Q 7Q
5 16
3Q 6Q
6 Q Q 15
OE OE
D CK CK D
3D 6D
7 14
4D 5D
8 13
D CK CK D
OE OE
Q Q
4Q 5Q
9 12
GND CLOCK
10 11
M5229FP (XY487A00)
7 Band Graphic Equalizer
A-JACK: IC300, 400
47k
1 20
IN1
10k
560
2 19
NF1
10k
47k
IN2 3 18
560
4 17
NF2
47k
IN3 5 16
560 47k
6 15
NF3
47k
IN4 7 14
560
8 13
NF4
47k
47k
IN5 9 12
560
10 11
NF5 47k
PF-1000
-Vcc
GND
+Vcc
OUTPUT
INVERTED
INPUT
NON-INVERTED
INPUT
NF7
IN7
NF6
IN6
31