Casio CTK-4000 User Manual download pdf (Page 6)

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PCB LAYOUT

PCB Components

MAIN PCB M804-MDA1 MPU, Reset IC, SRAM(4Mbit), P2ROM(128Mbit), Key controller,

SD card, USB, Power supply circuit

SUB PCB M804-PSA1 Power supply circuit, Power amplifer, Phones terminal,

Phone terminal, Pedal, DC IN jack

Console PCBs M805-CNA1 LCD, LCD contorller, Button, Button contorller

M805-CNA2 Speaker

M805-CNA3 Speaker

M805-CNB1 Power SW, Button

M805-CNB2 Main volume

Keyboard PCBs M802-KYA1 Keyboard

M802-KYA2

M805-CNA1 PCBM804-PSA1 PCB

M805-CNB1 PCB

M805-CNB2 PCB

M804-MDA1 PCB

M802-KYA2 PCBM802-KYA1 PCB

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Casio CTK-4000 User Manual Page 6