Circuit Description - Casio ML-1 Service Manual

Key Matrix
KI0
KO0 F3
KO1 C#4
KO2 A4
KO3
KO4
KO5 Tone 1
KO6
KO7
Keyboard LED Matrix
LY0
LX0
LX1
LX2
LX3

CIRCUIT DESCRIPTION

KI1 KI2
F#3 G3
D4 D#4
A#4 B4
Tone 2 Tone 3 Tone 4
Melody
LY1 LY2
E5
D5
KI3 KI4
G#3 A3
E4 F4
C5 C#5
Volume
Rhythm
Tone 5
Any Key
Demo
Guide Play
LY3 LY4
A4
G4
B4
C5 F4
— 3 —
KI5 KI6
A#3 B3
F#4 G4
D5 D#5
Volume
Down Up
Tempo
Stop Down
Rhythm Tempo
Select
Play
LY5 LY6 LY7
C4
D4 B3
G3
E4 A3
KI7
C4
G#4
E5
Up
F3