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BLOCK DIAGRAM
1
mum
§=Tone Signal
-2
a
=z
Q
=e
Sk
5
=°
2
MANUAL KEYBOARD
CIRCUIT
Bi
IK
bit
ROM
cs
sk DO
ame
Control Signal
Key
Switches
&
DBO
DB7
acemes
ACK
MXM
MAIN
CIRCUIT
Diodes
Gate
Array
Switches
DIO~ DIE
I
RDO ~ ROZ. RDG, RD7, RDY,
RDIO
TSO ~TS3
DOO ~ po2!
LED
Driver
&
LEO'S
DOO
~ Do2!
IC2~1C4
Buffer
LED
Display
ee ee
of
&
CNG
<z
a
°
o
z
et
.S)
Li
DBO~ DB7
aL
Q7
IK
Ty
1C1O
(
cit
1)
iE
he
C12
ICI9-1
tct
Digital
Dol
DATA
VAL, ROY
Signal
Di
&
-
"|
Processor
"t
i/7v
Converter
~ Ala
|)
REQ
'c2
igi
D/A
IDE
~1/016
Converter
a
DOO ~ Dols
Sa
ees
| eee LL
ICI5-3
1C14
——
a
5
a
C13
a
ICt9-2
JACK
CIRCUIT
s
ox
5
DATA
a
rr
05,04
E
i=
SOFT
Reset
2
"
rn
cath
ee al
o
0°
—_
00
eek
SUST
ry
ees
ae | ie
is
=
ais tte
OUTSLO.
JK2
7
o
Tone
Q3
sosu
=
K—
Tone
+5
Generator
0
-0"'0)
q
oO
ae
Generator
Oo,°0
SUST
°
er
PTO~ PT2
an
x20
Dota
Bus
~A3
N
:
[
oO
Q2
5
1c4
MTXD
TXD
°
°
<]
+
be
ett
or
Wave
ROM
Wave
ROM
02
Psu
|_Msns
SE
OR OE
D5,6,8, C26
(16M bit)
(16M bit)
ROM
Ql
(2M bit)
Memory
is
Back
Up
ROM
Wave
ROM
uke
Addfesi' ous
(IGM bit)
(16M bit)
5
4
°o
<<s
MRXD
MRXD
°
°
2s
tt
>|
5°
2§
H-3
VRI
MAIN
VOLUME
c
VOLL VOLR SUMR
SUML
10
N8
Q1,2,D02,3,9
PMUT
aS Y
+15y «———_—__|
Mixer
Amp
ic2o-!t
1C 20-2
Sv
Regulator
cNI
CN3
LOR
AUXL
AUXR
CNiO
I]
(i
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