Casio CTK-591 Service Manual

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BLOCK DIAGRAM
KC0 ~ KC7
FI0 ~ FI0
SI0 ~ SI7
MD0 ~ 5
LED0 ~
LED4
MWEB,
MCSB01,
MA18, 19
R/W, RS, DB4 ~ DB7, E
MIDI
Sound Source ROM
(32M-bit)
IC3
MR27V3202FSKMAZ020
D/A Converter
IC9
UPD6379LGR-E1
Filter
Q7 ~ Q10
Main
Volume
Power Amplifier
IC1
LA4598
Keyboard
MA0 ~ MA19
MCSB0
MCSB0, 1
MA18, 19
Power Supply Circuit
Q1 ~ Q6,
D1,D2,D4 ~ D7
(9V)
VC
(5V)
VD5
(5V)
VA5
(5V)
VDP5
(9V)
VCP
APO
ADP
Battery
APO Cancellation
L OUT
R OUT
Speakers
(L)
(R)
Phones/Output
LCD
LCD Driver
IC1
ML9040-B02GA
SEG1 ~ SEG40
IN
PED
OUT
Assingnable Jack
Reset IC
IC8
XC61FN2712MR
Chip Selector
IC5
TC74VHC153FT
RESET
COM1 ~ COM16
PG
X1
30MHz
MD0 ~ MD15
Buttons
VDP3
Power Switch
NMI
LED
Driver
Q1 ~ Q6
CPU
IC7
GT915GF-3BA
LED
LRCK
SO
BCK
5V 3V
Converter
MR27V3202PR
IC1
VDP5 VDP3
(5V)
Q11
D9
Mixer
IC2
NJM
14558D
MIC
MIC
VR
Amp.
IC1
NJM14558D
D3
AC Adaptor
DC 9V
Chip Selector
IC2, IC4, IC6
SN74AHCT08,
SN74LV20,
SN74LV174
(3V)

Casio CTK-591 Specifications

General

Brand	Casio
Model	CTK-591
Category	Electronic Keyboard
Language	English