Casio WK-240 - General Guide

WK-240
– 4 –
PCB INFORMATION
M822-MDA1M829-PSA1
M709-KYA1 M709-KYA2
Parts Name PCB Name Functions
Main PCB
PCB UNIT/MAIN M822-MDA1
MPU, SRAM, Flash memory, Power supply circuit, Filter,
SUSTAIN/ASSIGNABLE jack, USB port
Power & Amp PCB
BACK LIGHT UNIT M829-PSA1
Power supply circuit, Power amplifi er, Filters,
LCD controller/driver, Button controller, LCD, Buttons,
Power switch, Main volume, Mic volume, DC terminal,
AUDIO IN jack, PHONES/OUTPUT jack,
MIC IN/SAMPLING jack, Speakers
Keyboard PCB
PCB UNIT/KYA
M709-KYA1
Keyboard
M709-KYA2