Key Matrix - Casio CTK-650 Service Manual

KEY MATRIX

KC0
FI0 C2 1
SI0 C2 2
FI1 G#2 1
SI1 G#2 2
FI2 E3 1
SI2 E3 2
FI3 C4 1
SI3 C4 2
FI4 G#4 1
SI4 G#4 2
FI5 E5 1
SI5 E5 2
FI6 C6 1
SI6 C6 2
FI7 G#6 1
SI7 G#6 2
Note:Each key has two contacts, the first contact 1 and second contact
KC1 KC2
C#2 1 D2 1 D#2 1
C#2 2 D2 2 D#2 2
A2 1 A#2 1 B2 1
A2 2 A#2 2 B2 2
F3 1 F#3 1 G3 1
F3 2 F#3 2 G3 2
C#4 1 D4 1 D#4 1
C#4 2 D4 2 D#4 2
A4 1 A#4 1 B4 1
A4 2 A#4 2 B4 2
F5 1 F#5 1 G5 1
F5 2 F#5 2 G5 2
C#6 1 D6 1 D#6 1
C#6 2 D6 2 D#6 2
A6 1 A#6 1 B6 1
A6 2 A#6 2 B6 2
Key
First contact 1
Second contact 2
KC3 KC4 KC5
E2 1 F2 1
E2 2 F2 2
C3 1 C#3 1
C3 2 C#3 2
G#3 1 A3 1
G#3 2 A3 2
E4 1 F4 1
E4 2 F4 2
C5 1 C#5 1
C5 2 C#5 2
G#5 1 A5 1
G#5 2 A5 2
E6 1 F6 1
E6 2 F6 2
C7 1
C7 2
— 8 —
KC6 KC7
F#2 1 G2 1
F#2 2 G2 2
D3 1 D#3 1
D3 2 D#3 2
A#3 1 B3 1
A#3 2 B3 2
F#4 1 G4 1
F#4 2 G4 2
D5 1 D#5 1
D5 2 D#5 2
A#5 1 B5 1
A#5 2 B5 2
F#6 1 G6 1
F#6 2 G6 2
2
.
FI
KC
SI