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Casio
CTK-650 manual
1
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22
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22 pages, 1.25 Mb
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CTK-650
ELECTRONIC KEYBOARD
R
CTK-650
Contents
Main
Page
SPECIFICATION
2
BLOCK DIAGRAM
CIRCUIT DESCRIPTION
CPU(HD6433298A16P : H8/329)
DIGITAL SIGNAL PROCESSOR, LSI-S (HG51A115A01FD)
KEY TOUCH LSI(HG52E35P)
POWER AMPLIFIER(LA4598)
BUTTON MATRIX
Nomenclature of Keys
KEY MATRIX
9
WIRING DIAGRAM
KI7
KI6
KI5
KI4
IC LEAD IDENTIFICATION AND INTERNAL CIRCUIT
UPD6376CX (D/A converter)
TC74HC174AP (HEX D-TYPE FLIP FLOP WITH CLEAR )
TC74HC08AP (QUAD 2-INPUT AND GATE) TC74HC00AP (QUAD 2-INPUT NAND GATE)
Page
PCB VIEW & MAJOR WAVEFORMS
SCHEMATIC DIAGRAM
13
