Casio ctk 650 service manual

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CONTENTS SPECIFICATIONS ....................................................................................................1 BLOCK DIAGRAM ...................................................................................................2 CIRCUIT DESCRIPTION CPU (HD6433298A16P : H8/329) .....................................................................3 DIGITAL SIGNAL PROCESSOR, LSI-S (HG51A115A01FD) ..........................4 KEY TOUCH LSI (HG52E35P) ..........................................................................5 POWER AMPLIFIER (LA4598) .........................................................................6 BUTTON MATRIX ............................................................................................. KEY MATRIX .....................................................................................................8 WIRING DIAGRAM ................................................................................................... IC LEAD IDENTIFICATION AND INTERNAL CIRCUIT ..........................................10 PCB VIEW AND MAJOR WAVEFORMS ................................................................. SCHEMATIC DIAGRAM ........................................................................................... PARTS LIST .............................................................................................................15 EXPLODED VIEW ....................................................................................................197 9 12 13