Casio GZ-500 manual Circuit Description, KEY Matrix

Page 9

CIRCUIT DESCRIPTION

KEY MATRIX

 

KC0

KC1

KC2

KC3

KC4

KC5

KC6

KC7

 

 

 

 

 

 

 

 

 

FI0

C2 (1)

C#2 (1)

D2 (1)

D#2 (1)

E2 (1)

F2 (1)

F#2 (1)

G2 (1)

 

 

 

 

 

 

 

 

 

SI0

C2 (2)

C#2 (2)

D2 (2)

D#2 (2)

E2 (2)

F2 (2)

F#2 (2)

G2 (2)

 

 

 

 

 

 

 

 

 

 

FI1

G#2 (1)

A2 (1)

A#2 (1)

B2

(1)

C3 (1)

C#3 (1)

D3 (1)

D#3 (1)

 

 

 

 

 

 

 

 

 

 

SI1

G#2 (2)

A2 (2)

A#2 (2)

B2

(2)

C3 (2)

C#3 (2)

D3 (2)

D#3 (2)

 

 

 

 

 

 

 

 

 

 

FI2

E3 (1)

F3 (1)

F#3 (1)

G3

(1)

G#3 (1)

A3 (1)

A#3 (1)

B3 (1)

 

 

 

 

 

 

 

 

 

 

SI2

E3 (2)

F3 (2)

F#3 (2)

G3

(2)

G#3 (2)

A3 (2)

A#3 (2)

B3 (2)

 

 

 

 

 

 

 

 

 

FI3

C4 (1)

C#4 (1)

D4 (1)

D#4 (1)

E4 (1)

F4 (1)

F#4 (1)

G4 (1)

 

 

 

 

 

 

 

 

 

SI3

C4 (2)

C#4 (2)

D4 (2)

D#4 (2)

E4 (2)

F4 (2)

F#4 (2)

G4 (2)

 

 

 

 

 

 

 

 

 

 

FI4

G#4 (1)

A4 (1)

A#4 (1)

B4

(1)

C5 (1)

C#5 (1)

D5 (1)

D#5 (1)

 

 

 

 

 

 

 

 

 

 

SI4

G#4 (2)

A4 (2)

A#4 (2)

B4

(2)

C5 (2)

C#5 (2)

D5 (2)

D#5 (2)

 

 

 

 

 

 

 

 

 

 

FI5

E5 (1)

F5 (1)

F#5 (1)

G5

(1)

G#5 (1)

A5 (1)

A#5 (1)

B5 (1)

 

 

 

 

 

 

 

 

 

 

SI5

E5 (2)

F5 (2)

F#5 (2)

G5

(2)

G#5 (2)

A5 (2)

A#5 (2)

B5 (2)

 

 

 

 

 

 

 

 

 

FI6

C6 (1)

C#6 (1)

D6 (1)

D#6 (1)

E6 (1)

F6 (1)

F#6 (1)

G6 (1)

 

 

 

 

 

 

 

 

 

SI6

C6 (2)

C#6 (2)

D6 (2)

D#6 (2)

E6 (2)

F6 (2)

F#6 (2)

G6 (2)

 

 

 

 

 

 

 

 

 

 

FI7

G#6 (1)

A6 (1)

A#6 (1)

B6

(1)

C7 (1)

 

 

 

 

 

 

 

 

 

 

 

 

 

SI7

G#6 (2)

A6 (2)

A#6 (2)

B6

(2)

C7 (2)

 

 

 

 

 

 

 

 

 

 

 

 

 

Note: Each key has two contacts, the first conatct (1) and second contact (2).

Key

 

FI

Second contact (2)

First contact (1)

 

KC

 

SI

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

C#6 D#6

F#6 G#6 A#6

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

D6

E6

F6

G6

A6

B6

C7

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Image 9
Contents GZ-500 Specifications ContentsSetting Setting operation Setting UP the KeyboardInitial settings OperationInitial settings in The General Midi system Midi Message Setting Setting operationTransmitting Midi Messages Selecting a Midi channel 1. Press the Midi button Setting on/off of a Midi channel Initial settings of Midi control changeReceiving Midi Messages Transmitting a digital effect typeReceivable Messages Transmittable MessagesKC7 Block DiagramKEY Matrix Circuit DescriptionReset Circuit Power Supply CircuitButton Matrix Name Voltage For operationPin No Terminal In/Out Function Digital Signal Processor LSI102 HG51B155FDCE1, Trsb GND4 Block diagram of DSP and DAC circuitKEY Controller LSI107 HG52E35P DAC LSI104 UPD6376GSFilter Block LED Driving Power Amplifier IC402 LA4598Major Waveforms Schematic Diagrams Main PCB JCM715-MA1M Console PCBs JCM715-CN1M/2M/3M Keyboard PCBs M616T-KY1M/KY2M Exploded View Parts List Amp./Volume PCBs FOB Japan Code No Parts Name Specification Yen Unit Price MA0800751A