Casio CTK-401 - page 14

— 13 —

Keyboard PCBs KDM4910K-KY1M/KY2M

Contents

Main ELECTRONIC KEYBOARD CTK-401 MUSICAL INFORMATION SYSTEM CTK-401 S O CONTENTS SPECIFICATIONS GENERAL ELECTRICAL BLOCK DIAGRAM CIRCUIT DESCRIPTION KEY MATRIX NOMENCLATURE OF KEYS CPU (LSI1: MSM6755B-17) LCD DRIVER (LSI3: SED1278F0A) FILTER BLOCK POWER AMPLIFIER (IC101: TA8248K) ADJUSTMENT MAIN PCB MAJOR WAVEFORMS PRINTED CIRCUIT BOARDS Page Page Page LCD Segment Common EXPLODED VIEW PARTS LIST CTK-401