Casio CTK-485 Service Manual

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BLOCK DIAGRAM
CPU
MSM 6755B-17
LSI1
Keyboard
Buttons
LCD
LCD Driver
KS0066U-10B
LSI3
Reset IC
IC1
Power
Switch
Oscillator
X1, Q1
Power Supply Circuit
Q101 ~ Q104, D205
Power Amp.
LA4598
IC101
Filter (L)
Q106
Filter (R)
Q107
Phones/Output
Speaker (L)
Speaker (R)
VC VCC DVDD AVDD
APO
MD0 ~ MD7
MA0 ~ MA18
DC + 9 V IN
DB4 ~ DB7
COM1 ~ COM14
SEG1 ~ SEG40
RS R/W E
KO8 ~ KO12
KI0 ~ KI6 KI0 ~ KI7
KO0 ~ KO7
ROM(2M-bit)
LC372100PM-
H78
LSI2

Casio CTK-485 Specifications

General

Brand	Casio
Model	CTK-485
Category	Electronic Keyboard
Language	English