— 3 —

Headphone output level (Vrms with 8 Ω load each channel):

with key C3 pressed in Pan Flute tone 210 mV ± 20%

Output level (Vrms with 47 kΩ load each channel):

with key C2 pressed in Pan Flute tone 2000 mV ± 20%

Speaker output level (Vrms with 4 Ω load each channel):

with key A1 pressed in Pan Flute tone 2150 mV ± 20%

Minimum operating voltage: 6.3 V

BLOCK DIAGRAM
KC0 ~ KC7
FI0 ~ FI7
SI0 ~ SI7
Sound Source ROM
(8M-bit)
LSI102
MX23C8100MC-
12CA19
LRCK, SO, BCK
D/A Converter
IC103
UPD6379GR
Filter
Q108, Q109
Power Amplifier
IC101
LA4598
LED driver
IC106
BA612
Keyboard
MA0 ~ MA19
Power Supply Circuit
Q101 ~ Q105, Q110, Q119
D104, D105, D109
VCC AVDD VDD
LVDD DVDD
VC
APO
MD0
~
MD7
Speakers
Output
MA8
~
MA11
LEDs /
7Seg. LED
LED driver
Q111 ~ Q118 La ~ Lg, Lp
MIDI IN
OUT
Buttons VDD
Power Switch
Reset IC
IC104
RE5VA35AA
RESET FI10
CPU
LSI101
UPD912GF-3BA
KI0
~ KI2
MD0 ~ MD15
LED Latch
IC105
HD74HC75P
LED Latch
IC107
HD74HC373P
NMI