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Musical Instruments & Equipment
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Electronic Keyboard
Casio
casio electronic keyboard
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Sub PCBs JCM444-MA2M/MA3M
Contents
Main
ELECTRONIC KEYBOARD
CTK-431
MUSICAL INFORMATION SYSTEM
INDEX
SONG BANK CONTROLLER
E
CONTENTS
SPECIFICATIONS
GENERAL
ELECTRICAL
BLOCK DIAGRAM
CIRCUIT DESCRIPTION
KEY MATRIX
NOMENCLATURE OF KEYS
CPU (LSI1: MSM6755C-17)
LCD DRIVER (LSI3: KS0066U-10B)
FILTER BLOCK
POWER AMPLIFIER (IC101: LA4598)
ADJUSTMENT
MAIN PCB
MAJOR WAVEFORMS
PRINTED CIRCUIT BOARDS
Main PCB JCM444-MA1M
SCHEMATIC DIAGRAMS
Main PCB JCM444-MA1M
Page
Page
LCD SegmentCommon
EXPLODED VIEW
PARTS LIST
CTK-431
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