Ic Block Diagram - Yamaha i88x Service Manual

i88X

IC BLOCK DIAGRAM

TC74VHCT04AF (XT777A00)
TC74VHC04FT (X0195A00)
Hex Inverter
1A 1
2
1Y
3
2A
4
2Y
5
3A
6
3Y
7
Vss
TC7SH08FU (XR680A00)
2 Input AND Gate
IN B
1
IN A 2
GND 3
TC74VHCT32AFT-EL (XZ372A00)
Quad 2 Input OR
1A 1
1B 2
1Y 3
2A 4
2B 5
2Y 6
GND 7
24
TC7WU04F (XN567A00)
TC7WU04FU (XQ805A00)
Triple Inverter
DM:IC620,IC15
14
VDD
13
6A
12
6Y
11
5A
10
5Y
VDD
9
4A
8
4Y
TC74VHC14FT (XV890A00)
Hex Inverter
DM:IC619
MLN2:IC17
Vcc
5
4 OUT Y
TC7W32FU(TE12L) (XQ173A00)
Dual 2 Input OR
DM:IC607
14 Vcc
13 4B
12 4A
11 4Y
10 3B
9 3A
8 3Y
DM:IC600,IC622
Vss
1A 1 8
3Y 2
7 1Y
2A 3 6 3A
2Y
4 5
DM:IC606
1A VDD
1 1
1Y 6A
2 2
2A 6Y
3 3
2Y 5A
4 4
3A 5Y
5 5
3Y 6 6 4A
GND 7 7 4Y
MLN2:IC38,IC45
1A 1 8 Vcc
1B 2 7 1Y
2Y 3
6 2B
GND 2A
4 5
TC7S04F (XM182A00)
Inverter Gate
MLN2:IC41
NC 1 5 VDD
IN 2
3 4
VSS OUT
TC7W14F (XR336A00)
SN74HC2G14HDCTR (X3268A00)
Triple Inverter
DM:IC513,IC516
MLN2:IC1,IC21
1A 1 8 VCC
3Y 2 7 1Y
2A 3 6 3A
GND 4 5 2Y
TC7SET32FU (XW814A00)
TC7SH32FU(TE85L)OR (XW633A00)
Input OR Gate
DM:IC604,IC605,IC618,
IC621,IC623,IC624
IN B Vcc
1 5
IN A
2
3 4
OUT Y
GND