Pcb Layout - Casio ap-21 Service Manual

PS12
PS3M
VOLUME TRANSPOSE/ DIGITAL
CN2M
TUNE/MIDI EFFECT CHORUS REVERB
ON REVERB2
MIN MAX
OFF
REVERB1
POWER
KY1M
PS4M
PCB
Main PCB
Sub PCB
Console PCB
Other PCBs

PCB LAYOUT

PS2M
TONE MEMORY DEMO
CN1M
SONG A
START/
HARPSI- PIPE
STOP
PIANO E.PIANO STRINGS SONG B RECORD
CHORD ORGAN
KY2M
JCM358-
MA1M
PS2M
CN1M
CN2M
PS12
PS3M
PS4M
— 4 —
MA1M
Components
CPU, LSI-S, Sound Source ROM Working storage
RAM, Effect RAM Reset IC, DAC, Key Controller
Filter, Lineout Amp., Power Amp. Power supply cir-
cuit. MIDI input/output.
LEDs, Buttons, Gate array
Main Volume
Fuse
Head phone Jack
Power lamp
AP-21
KY3M