Casio CTK-573 Service Manual

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BLOCK DIAGRAM
KC0 ~ KC7
FI0 ~ FI7
SI0 ~ SI7
KI0 ~ KI2
DB4 ~ DB7, E,
RS, R/W
RAM (256K-bit)
LSI1
TC55257DFL-70L(EL)
MIDI
Sound Source ROM
(8M-bit)
LSI2
MSM538002EIF
GSK DRI
Sound Source ROM
(16M-bit)
LSI3
MSM531602
F35GSKDRI
D/A Converter
IC 1
UPD6379GR-E1
Filter
Q106 ~ Q107
Main
Volume
Power Amplifier
IC101
LA4635
Keyboard
MA0 ~ MA19
MCSB0
MCSB0, 1
MA18, 19
Power Supply Circuit
Q101 ~ Q104,
D101, D103 ~ D106
DC 9V
VCC AVDD
VC DVDD
APO
L OUTR OUT
MD0
~
MD7
Speakers
(L)
(R)
Phones/Output
MA0
~
MA14
LCD
LCD Driver
LSI401
ML9040-B02GA
SEG1 ~ SEG40
IN
PED
OUT
Assingnable Jack
Reset IC
IC6
S-80940AN
Chip Selector
IC4,5
RESET
COM1 ~ COM16
MD0 ~ MD15
Buttons
VDD
Power Switch
NMI
FI9
FI10
CPU
LSI4
GT913F(T)
CE
CE CE
LRCK
SO
BCK

Casio CTK-573 Specifications

General

Brand	Casio
Model	CTK-573
Category	Electronic Keyboard
Language	English