Ic Block Diagram - Yamaha AW2816 Service Manual

IC BLOCK DIAGRAM

HD74HC02FPEL (XL091A00)
SN74HC02NSR (XW791A00)
Quad 2 Input NOR
MAIN: IC421
1Y VDD
1 14
1A 4Y
2 13
1B 4A
3 12
2Y 4B
4 11
2A 3Y
5 10
2B 3A
6 9
Vss 3B
7 8
TC74VHC11FT (X0197A00)
Triple 3 Input AND
MAIN: IC722, 724
1A VDD
1 14
1B 1C
2 13
2A 1Y
3 12
2B 3C
4 11
2C 3B
5 10
2Y 3A
6 9
3Y
VSS
7 8
TC74VHC74FT (XV892A00)
Dual D-Type Flip-Flop
MAIN: IC423, 725, 728, 729
1
1CLR 14 VCC
2 13
1D D
2CLR
D
3
12
1CK CK
2D
4
1PR 11
PR CK 2CK
5
Q 10
1Q
2PR
PR
6
9
Q
1Q Q 2Q
7 8
GND 2Q
Q
INPUTS OUTPUTS
PR CLR CLK D Q Q
L H X X H L
H L X X L H
L L X X H H
H H f H H L
H H f L L H
H H L X Q Q
O
TC74VHC04FT (X0195A00)
74VHC04MTCX (X0292A00)
TC74HCT04AF-T1 (XI297A00)
HD74LS06FPEL (XH610A00)
Hex Inverter
MAIN: IC515, 727
SUB-FADER: IC101, 102
1
1A
2
1Y
3
2A
4
2Y
5
3A
6
3Y
7
Vss
HD74HC14FPEL (XL094A00)
MM74HC14SJX (XW104A00)
Hex Inverter
SUB-CPU: IC202
1
1A
2
1Y
3
2A
4
2Y
5
3A
6
3Y
7
GND
TC74VHC138FT (XZ495A00)
3 to 8 Demultiplexer
MAIN: IC707
A 1
Select
2
B
3
C
4
G2A
Enable
5
G2B
6
G1
Output
7
Y7
8
GND
O
14
VDD
13
6A
12
6Y
11
5A
10
5Y
9
4A
8
4Y
14
VDD
13
6A
12
6Y
11
5A
10
5Y
9
4A
8
4Y
16 Vcc
A
B Y0 15
YO
14
C Y1 Y1
G2A Y2 13 Y2
Output
G2B Y3 12 Y3
11
G1 Y4
Y4
10 Y5
Y7 Y5
Y6
9 Y6
TC74VHC08FT (XV891A00)
Quad 2 Input AND
MAIN: IC721
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
TC74VHC32FT(XY945A00)
Quad 2 Input OR
MAIN: IC726
1A Vcc
1 14
1B 4B
2 13
1Y 4A
3 12
2A 4Y
4 11
2B 3B
5 10
2Y 3A
6 9
GND 3Y
7 8
TC74VHC157FT (X0199A00)
74VHC157MTCX (X0293A00)
Quad 2 to 1 Multiplexer
MAIN: IC713-715
1
SELECT 16 Vcc
2 1A G 15
1A STROBE
3
1B 4A 14
1B 4A
4
1Y 1Y 4B 13 4B
5
2A 4Y 12
2A 4Y
6
2B 3A 11
2B 3A
7 2Y 3B 10
2Y 3B
8
GND 9 3Y
AW2816
47