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BUTTON MATRIX
L18
L19
TOUCH SELECT
L20
L24
L25
L26
L27
L28
POWER SUPPLY CIRCUIT
The power supply circuit generates four voltages as shown in the following table.
Name
VDD
AVDD
AVCC
AVFF
KI0
STEP BY STEP
PART L
TRACK A
TEMPO/
METRONOME
BEAT/FIXED
PIANO 2
E. PIANO
PIANO 1
STRINGS
VIBRAPHONE
PIPEORGAN
SONG SELECT
VALUE DOWN
Voltage
+5 V
CPU, Reset IC, Working storage RAM, DSP, Key touch LSI, Sound
source ROM, Effect RAM, Gate array
+5 V
DAC
+15 V
Filter, Mixer
–15 V
Filter, Mixer
KI1
KI2
PART R
TRACK B
HARPSICHORD
CHOIR
CHORUS/
TREMOLO
RECORD
VALUE UP
For operation of
— 12 —
KI3
NEXT
PLAY/STOP
W.BASS
E.BASS
REVERB
DEMO
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