Casio AP-20 Service Manual

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DSP
HG51B155FD
RAM
256K
HM62256BLP-10
ROM
1M
MX23C1010PC-
12CA25
CPU
HD6435328RC13F
PEDAL
MIDI
IN OUT
ROM
8M + 16M
HN62418PD25
HN624116D44
RAM
256K × 2
HM65256BLSP-
10 × 2
Keyboard
Controller
HG52E35P
Switch & LED
Controller
µPD65005GF-419
D/A Converter
µPD6376CX
D/A Converter
µPD6376CX
Filter
Mixer, Mute Circuit
T6, T7, T10, T11
Power Amp.
STK4132MK
RA0 ~ 19
RD0 ~ 15
EA0 ~ 14
ED0 ~ 15
A0 ~ 3
A0 ~ 14
D0 ~ 7
KC0 ~ 4
KI0 ~ 3
L1 ~ 9
LA ~ J
LEDs
Switches
Keyboard
KC0 ~ 7
FI0 ~ 10
SI0 ~ 10
Main
Volume
Voltage Regulator
M5F78M12L × 2
M527BL05
T8, T9
AVCC AVDD AVFF VDD
+12V +5V –12V +5V
SOLM, SOLP
BDK, WOK1, SORM, SORP
Power Switch
Power Transformer
T101
Reset IC
MB3771P
RST
MUTE
BRILLIANCE
MIDI MIDO
SF
SS
DP
Filter
LINE IN
P70 ~
P77
P12 ~
P14
BLOCK DIAGRAM

Casio AP-20 Specifications

General

Brand	Casio
Model	AP-20
Category	Musical Instrument
Language	English