Casio CTK-4000 User Manual download pdf (Page 5)

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BLOCK AND WIRING DIAGRAM

KC5~KC7,

FI4~FI7,

SI4~SI7

KC0~KC4,FI0~FI3,SI0~SI3

MD0 ~ MD15

MD0 ~ MD15

MA1~ MA18

MA1~MA23

VA5

VCP

VD5

VA3

VDP3

VD3

VD3

IC3

IC6

IC2

Power Supply Circuit

Q1~Q3,Q7,D105,203

VC

VD5

VCP

VA5

LVD5

CN22

CN18

CN14

CN15

VD3

CN2 (13pin)

CN801 (13pin) CN802 (10pin)

CN803 (10pin) CN804 (11pin)

CN7 (4pin)

CN3 (11pin)CN3 (11pin)

CN1 (15pin)

CN1 (15pin)

CN3 (5pin)

CN5 (5pin)

CN4 9pin)

CN3 (15pin)

CN6

CN7

CN5

CN4

CN19 (5pin)CN18 (9pin)

MAIN PCB (M804-MDA1)

CONSOLE PCB (M804-PSA1)

CONSOLE PCB

(M805-CNB2)

CONSOLE PCB

(M805-CNA1)

KEYBOARD PCB

(M802-KYA1

)

KEYBOARD PC

B

(M802-KYA2)

SRAM(4Mbit)

IC9

P2ROM(128Mbit)

IC1

Keyboard Keyboard

MPU

IC7

Filter

IC5

POWER

SUPPLY

CIRCUIT

Filter

IC2

CONSOLE PCB

(M805-CNB1)

BUTTON

CONTROLLER

IC2

LCD

CONTROLLER

IC1

Power Amplifier

IC1

Filter

IC3

*Not used: 12pin-15pin

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