Casio CTK-230 Sep. 2003 manual Circuit Description

Page 5

CIRCUIT DESCRIPTION

KEY MATRIX

 

KID0

KID1

KID2

KID3

KID4

KID5

KID6

 

 

 

 

 

 

 

 

KOD8

+

0

TEMPO

TEMPO

VOLUME

VOLUME

 

 

 

 

KOD9

3

2

1

START/

SYNCRO/

F5

ACCOMP

STOP

FILL IN

VOLUME

 

 

 

 

 

KOD10

6

5

4

TRANSPOSE/

SONG

RHYTHM

TONE

TUNE

BANK

 

 

 

 

 

 

KOD11

9

8

7

FINGERED

CASIO

NORMAL

OFF

CHORD

 

 

 

 

 

 

 

KOD12

E2

MELODY

PLAY/

STOP

 

 

 

ON/OFF

PAUSE

 

 

 

 

 

 

 

 

 

NOMENCLATURE OF KEYS

C#2 D#2

F#2 G#2

A#2

C#3 D#3

F#3 G#3

A#3

C#4 D#4

F#4 G#4

A#4

C#5 D#5

F#5 G#5

A#5

C2

D2

E2

F2

G2

A2

B2

C3

D3

E3

F3

G3

A3

B3

C4

D4

E4

F4

G4

A4

B4

C5

D5

E5

F5

G5

A5

B5

C6

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Image 5
Contents CTK-230 Contents Specifications LCD DB4~DB7 APO Block DiagramCircuit Description Main PCB CMW277-MAIN Printed Circuit BoardsJack PCB DisassemblyDiagnostic Program APO check LCD checkAC Adaptor check Main PCB CMW277-MAIM Schematic DiagramsKeyboard PCBs JCM4911K-KY1M/KY2M Exploded View Parts List Accessory Overseas Service Division