Casio CZ-1 Service Manual And Spare Parts List page 98

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
PORTAMENTO OH
10
ft
• V0L2
OS
10
20
10
20
LMAS
NOISE
Z
9
LMA4
'
n
SO
SO
SO
LMAS
i*r
61
174
LSI 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-