Casio CTK-711EX Service Manual

— 6 —
BLOCK DIAGRAM
ROM2
MSM23C3210MC
-12CA89
LSI3 (32Mbit)
ROM1
MSM27C802CZ-463
LSI2 (8Mbit)
RAM1
TC551001BFL-70L
LSI8 (1Mbit)
VBR
VBR
AVDDDVDDCVDDVCCVDDVC
VDD
APO
NMI
SWCK
LSDT
IC1
S1 HWR, RD
RD, HWR, LWR
RD, HWR, LWR
1RD, 1HWR, 1LWR
A0 ~ A15
KI0 ~ KI7
KC0 ~ KC8
SEG1 ~ SEG40
OUT
MIDI
IN
COM1 ~ COM16
LEDA ~ LEDF
LEDCK, LEDCL
D0 ~ D15
D8
D15
~
Chip Selector
TC74HC08
IC4
S-Register
TC74HC164
IC302
S-Register
TC74HC164
IC301
Back Light
LCD
Back up
Power
CR2032
Power Supply Circuit
Q203, Q204, Q207,
Q208, Q212, Q213
Q205,
Q206
CPU
HD6473042F16-463
LSI9
Working
RAM
TC55257
GFL-70L
LSI5
(256Kbit)
LPF
(L)
LPF
(R)
D8 ~ D15 RESET
RD,
HWR
ECEB, EOEB
EWEB
RESB
RESB
PBO
LCD Driver
SED1278F2A
LSI501
DB4
~DB7
CONT,
LRS,
LR/W
LE
Keyboard
SI0 ~
SI7
FI0 ~
FI7
KC0
~
KC7
WOK1
SOLP
BOK
Key Controller
TC190C020AF-001
LSI10
Reset IC
RN5VD40A
IC3
Out put
(L) (R)
Speakers
Back Light Driver
NT-07
Q501, Q502
LEDs
VDD
Buttons
A1 ~ A4
D0 ~ D15
RA0 ~ RA20
ED0 ~ ED8
EA0 ~ EA14
RD0 ~ RD15
Main
Volume
D/A Converter
µPD6376GS
LSI1
Power Amp.
LA4620
IC201
DSP
HG51B155FD
LSI4
A0 ~ A3

Casio CTK-711EX Specifications

General

Brand	Casio
Model	CTK-711EX
Category	Electronic Keyboard
Language	English