Casio CZ-1 Service Manual And Spare Parts List

13.
LED
DRIVING
CIRCUITS
74LS114
FUNCTION
TMVf
(f
ACM
9
kIP-PkOPI
M •
*
IMMlT
OUTKTT
CLIAN CkOC*
Q
fit
I
XX
M t
M
H
t
k
M k
X
k
N
M
k
k
•
X*
PCS
MA4M
01
74LS1S4P
FUNCTION
TA4UI
OUTPUT
k
N
M
k
M
*4
M
t
H
M
k
k
M
M
k
H
N
I
I
I
k
I
M
I
I M
M
t
X
X
M
M
M
M M
M
k
M
M
H (.
M
M
M
k
M
M
M
M
H
M
H
M
M
M
M
M
H
M M
M
M M
N
N
N
H
H
H
M
M
M
N
H
M
M
M
N
N
M H
1*1"
"
13
1?
"
li
H
H
W
H
H
H
H
M
M
M
M
H
M
M
M
M
M
N
M
N
M
H
M
M
M
N
M
N
M
H M
M
M
N
M
L
M
H
H
M
W
H
M
H
M k
H
M
H
M
k
M
M
N M
M
M
M
M
M
H
M
M
H
H
H
N
H M
M
M
H
M
M
M
M
H
M
H
M
M
M
M
M
M
I
N
M
M
I
M H
H
»
M
M
M »
f
H
M
I
M
M
M
I
M
M
H
I
H
M
M
•
M
M M
I
M
M
M
I
M
M
M
I
t
H H
I
H
k
M
I
M
H
k
I
M
M
M
H
H
M
M M
M
M
M
M
0«O
but
00-05
61
61
61
69
to
20
SO
SO
40
30
CLK
10
30
SO
SO
40
30
61
61
61
PCS
MAIM
Adtfrm
but
AO
-3
I7-#1S
L70'
V0L2
NORMAL
61
30
30
30
«
20
LM9S
CARTRI00E
SAVI/LOAO
'
fl»
LM94
NAME
61
40
1
40
10
5
10
SO
|
SO
so
"
so
CLK
LM93
PORTAMENTO
61
LM92
CUOI
61
LM91
BCNO
RANG!
'
61
UM90
WMEEL/APTER
TOUCH
#19
L-»V0L2
61
10
20
SO
SO
40
30
CLK
10
20
SO
SO
40
30
PCS
CN1M.
2M
LM7S
MI04
LM74
SOLO
LM73
OPERATION
MEMORY
LM72
KEY
SPLIT
LM71
TONE
MIX
LM70
NORMAL
LMS2
LMSO
CARTRIOCE
COMPARE/RECALL
MASTER
TUNE
KEY
TRANSPOSE
CLIOE
ON/OP
P
PORTAMENTO
OH10
ft
•
V0L2
OS
10
20
10
20
LMAS
NOISE
Z
9
LMA4
'
n
SO
SO
SO
LMAS
i*r
61
174
LSI
7
SO
LMA2
61
40
40
LMA1
2
61
30
CLK
30
LMAO
1
#1A
L^V0L3
61
10
20
SO
so
to
LM8S
MOOULATION
ON/O'P
61
ft
z
«
20
LMS4
MIOI
ON/OM
'
61
SO
LMS3
OCA
2
IEVEL
61
5
s
so
LMB2
OCA
1
Lt
VEl.
61
40
30
CLK
40
30
LMB1
OCA
2
VC-LOCITY
61
z
M
LMSO
IS
L«»V0L2
Combining
tha
signals AO
A3,
dtcodtr 74LS154P-1
ganaratas
signals
#17
-
s>1A
whH» t
lstchts74LS174N.1
-
5.
For
lighting
tha LED
"NORMAL",
MAIN CPU
raise*
signal
DO
which
is
inverted to LOW
laval.
Than,
Main CPU
ganaratas
clock
signal
#17
from signals AO
-
A3.
DO
(-
LOW)
is
sat
in
latch
SN74LS174N-1
dropping
signal LM70
LOW.
Tha
LED
"NORMAL"
is
lit sinca its
anoda
is
connacted to
VDL2
(+5V).
-37-

Casio CZ-1 Specifications

General

Brand	Casio
Model	CZ-1
Category	Synthesizer
Language	English