Block Diagram - Casio AP-40 Service Manual

BRILLIANCE
A0 ~ 19
A0 ~ 14
D0 ~ 7
RAM 256K
TC55257DFL-70L
LSI3
ROM 8M
MSM538002E-
W1-GS-K
LSI2
SP

BLOCK DIAGRAM

IN
PEDAL
PB4 ~ 6 M-IN
CPU
HD6435328RF35F
LSI1
D0 ~ 7
DSP
HG51B155FD
LSI 7
SOLM, SOLP
D/A Converter
uPD6376GS
LSI 4
Filter
Main
Volume
LINE OUT
LINE IN Mixer, Mute Circuit
Power Amp.
STK4132MK
IC405
Tweeter
HEADPHONE
MIDI
OUT P70 ~
Keyboard
Controller
P77
HG52E35P
M-OUT
LSI10
Switch & LED
Controller
uPD65005GF-419
LSI301
MUTE
BDK, WOK1, SORM, SORP
D/A Converter
uPD6376GS
LSI 5
Filter
SP
Tweeter
— 2 —
Keyboard
KC0 ~ 7
FI0 ~ 10
P12 ~
SI0 ~ 10
Buttons
P14
L18 ~ 28
KI0 ~ 3
LA ~ LG, LP
LK8 ~ 14
Reset IC
RST
MB3771PF
IC5
RA0 ~ 22
ROM 24M
MX23C2410MC-
RD0 ~ 15
LSI6
EA0 ~ 14
RAM 256K × 2
TC55257DFL-70L
ED0 ~ 15
LSI8,9
LEDs
12CA58
× 2