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Block And Wiring Diagram - Casio CTK-4000 Service Manual & Parts List

Electronic keyboard
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KEYBOARD PCB
Keyboard
(M802-KYA1)
CN801 (13pin)
CN2 (13pin)
CN3 (15pin)
KC5~KC7,
FI4~FI7,
SI4~SI7
KC0~KC4,FI0~FI3,SI0~SI3
VA5
IC3
VCP
IC2
VD5
IC6
POWER
SUPPLY
CIRCUIT
VD3
CN1 (15pin)
CN1 (15pin)
Filter
Power Amplifier
IC2
IC1
CN3 (5pin)
CONSOLE PCB
(M805-CNB2)
CONSOLE PCB
(M805-CNB1)

BLOCK AND WIRING DIAGRAM

CN802 (10pin)
*Not used: 12pin-15pin
VA3
MPU
VDP3
IC7
VD3
Filter
IC5
VD3
CN3 (11pin)
KEYBOARD PCB
(M802-KYA2)
CN803 (10pin)
MAIN PCB (M804-MDA1)
MA1~ MA18
SRAM(4Mbit)
MD0 ~ MD15
MA1~MA23
P2ROM(128Mbit)
MD0 ~ MD15
CN7 (4pin)
CN5 (5pin)
CONSOLE PCB (M804-PSA1)
Filter
IC3
CONSOLE PCB
(M805-CNA1)
LVD5
CN3 (11pin)
– 3 –
Keyboard
CN804 (11pin)
IC9
IC1
CN4 9pin)
VD5
VA5
VCP
VC
Power Supply Circuit
Q1~Q3,Q7,D105,203
CN18 (9pin)
CN19 (5pin)
LCD
CONTROLLER
IC1
BUTTON
CONTROLLER
IC2

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