Block Diagram - Casio CTK-573 Service Manual

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