Circuit Description - Casio CTK-620L Service Manual

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KEY MATRIX
KC0
KC1
FI0
C2 (1)
C#2 (1)
SI0
C2 (2)
C#2 (2)
FI1
G#2 (1)
A2 (1)
SI1
G#2 (2)
A2 (2)
FI2
E3 (1)
F3 (1)
SI2
E3 (2)
F3 (2)
FI3
C4 (1)
C#4 (1)
SI3
C4 (2)
C#4 (2)
FI4
G#4 (1)
A4 (1)
SI4
G#4 (2)
A4 (2)
FI5
E5 (1)
F5 (1)
SI5
E5 (2)
F5 (2)
FI6
C6 (1)
C#6 (1)
SI6
C6 (2)
C6# (2)
FI7
G#6 (1)
A6 (1)
SI7
G#6 (2)
A6 (2)
BUTTON MATRIX
KC0
KC1
KI0
MEMORY
STEP 2
KI1
STEP
STEP 3
KI2
STEP 1
0
TRACK 1/
LAYER
FI9
RIGHT
TRACK 1/
FI10
SPLIT
LEFT
PA0
FULL RANGE
PB0
INTRO
NORMAL
PB1
FILL-IN
VARIATION
PB2
FILL-IN
START/
PB3
STOP

CIRCUIT DESCRIPTION

KC2
KC3
D2 (1)
D#2 (1)
D2 (2)
D#2 (2)
A#2 (1)
B2 (1)
A#2 (2)
B2 (2)
F#3 (1)
G3 (1)
F#3 (2)
G3 (2)
D4 (1)
D#4 (1)
D4 (2)
D#4 (2)
A#4 (1)
B4 (1)
A#4 (2)
B4 (2)
F#5 (1)
G5 (1)
F#5 (2)
G5 (2)
D6 (1)
D#6 (1)
D6 (2)
D#6 (2)
A#6 (1)
B6 (1)
A#6 (2)
B6 (2)
KC2
KC3
3
TONE
7
+
4
2
RHYTHM
1
SONG
PA1
CHORD
FINGERED
CASIO
CHORD
NORMAL
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)
KC4
KC5
TEMPO
5
6
ACC. VOL.
DEMO
TOUCH
PLAY/PAUSE
9
FF
8
— 4 —
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)
KC6
KC7
SYNCHRO/
TEMPO
ENDING
TIME
METRO
REVERB
STOP
KEYLIGHT
TRANSPOSE/
REWIND
TUNE/MIDI

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