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S/#
5030~
266-46
)
SM
10.6 V DC
OS
control Ckt
—
[on]
t
(44) K10 0
3
ee
oa
[
g
6} | Whef K10
comes
1, the ninth
memory
circwit
is cleared.
Then
the
next
stpge
clear
lock
IC6
1
3
<
output
becomes
1.
The high@)
8
is
1
key has precedence.
(51) K
Q9O—
10 |} 2
8
Ss
1
8
8
oa
ae.
Wher-K10
an
KOU
3
b
4-thegight-
6
5
th
memory
TS
4
cleared.
2
©
=
Ch
t
0
12
=
(58)
K
8
xJ
1
ie
This
loop
basil
g
_
if
é
RZ
13
esa
on tie:
Hy
5
7
i.
cuit.
6
ZZ
a6
When Kto-KS, KB.)
N
a'
1
th
memory
is
t
9
1
(65)K
7
S
3
=
Wcleardd.
Related
to low
key circuit clear
S
13
8
-
>|
and low key precedence.
*
2
6
10
12
"1
9
©
5
1
When
more
than
two
keys are
(71) K
60
Zz
2
mole
2
9
t
Pressed at once,
in order
to give
ge
2
12
Precedence
to the low
keys,
the
ss
6
11
|
\
ry
high key memory
does not go on,
1
and
no clear
signal
is created
in
3
e
WW)
|
=o
<
6 (72)
the low key circuit.
'i
;
t
Se
ee
=
(31) K
oo
1052
7
6
C3
af
9
5
De
|
6
Tr16
;
|
.
4
2
t+!
=1-O FE 5Sia0)
12
6
11
t
L-—~--
4
(25)K 404
Q
4 9 YS
oe
Ss
Gs
13
5
Teenie
4
|
|
7
|
8
10
S
~
|
—-OT
4(24)
1
1
Sa
a
9
Pie
sr
a ea
Ee
18)K
3
3
9
e
7
(Low Key Precedence)
(
)
S
3
-
at
!
If K1 is 1, then 2-10 circuits must
N
2
8
10
g o e s
ee
ae
|
|
12
"1
9
N
|
OFT
307
>
5
E-
a
5
41
3
:
{
=
4126
20s
3
-
ae
xs
Tr 9
Trig
N>
[etwhen
K1
becomes
This Lkey~can
be
U2
1
|
:
.
|
1this
output
must
checked
with
a
Z
|
be
O.
The
lower
tester.
=
|
om
aa
—
I
+07
2G
ea
a
ee
T
|
Tr10
Tr20
\
+15 | 34+ 35
\
7
|
+106)
3-4
The
O level of this key
cannot
+15V
=f
Oe
1( 5)
E
40+ 41
be
checked
with
a
tester
(an
_
a
et
oscilloscope is all right).
+
A
tester
can be
used
to check
g
if this point is 1 or O.
If the
lamp
and
signal
are
both
off,
something is wrong.
x
8
(Preset Tone
Selection and Memory
for Solo Keyboard)
Circuit Diagram
Lamp driving
circuit
Tr31
Tr32
|
|
|
|
|
Se
eet
ae ee
\
Tr33
Tr34
|
|
|
|
|
(sigs
4
3
r
Tee
sre
Tr35
36
|
|
|
|
|
eee
ee
2a
ee
2
Tr37
-1r38 sd
\
|
|
|
|
Pa eS
es
1S
;
Tr39
Tr40
|
|
|
|
|
|
ieee
Notes) 1. Transistor
Tr | ~10,21~40
Tril~20
2.1C
ee
8.9.10
*.5,%.2
: 2S0458(C)
: 2SA561(Y)
: CD4001
(RCA
CMOS)
> CD4025
(RCA
CMOS)
@
> MC14570
(CMOS)
3. Same
number is connect.
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