Casio CTK-4000 - Block and Wiring Diagram

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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