Akai AX80

MODEL: AX
80
002
Subject:
Parts information
No. AX80/1
DATE:
April 1985
Change
of
Part
Name.
Because
of
the
new
type
IC
TC4013BP
production,
the
IC
manufacture
has
changed the
name
of old
type
IC
TC4013BP
to
TC4Q13BAP.
Old
type
IC
TC4013BP
and
IC
TC4013BAP
are
interchangeable.
Since
old
type
TC4013BP
and new
type
TC4013BP
function
differently, IC
itself can
not
be
substituted. However,
this
change
should
not
affect
the
operation
of
AX80
even
when
a
new
TC4013BP
is installed.
The new
type IC
can be
identified
by
its
Lot
Number,
added
to its
Lot Number.
The
letter
"B"
will
be
Old
type
TC4013BP
New
type
TC4013BP
8501H
8522HB
The
chart
below
shows
the
difference
of their function.
OLD
TRUTH
TABLE
TC4013BP
INPUTS
OUTPUTS
CL
PR D
CP
A
Qn+1
Qn+1
L H
•3
m
H L
H
L m
L
H
H H
•it
H
L
L L
_r
L
H
L
L H
_r
H
L
L
L
i_
Qn*
Qn*
:
Don't
Care
A
:
Level
Change
•
:
No
Change
NEW
TRUTH
TABLE
TC4013BP
INPUTS
OUTPUTS
*
CL PR D
Qa+1
Qn+l
L
H
;*
H
L
H
L
&
H
H H
H
L L
L
J~
L
H
L
L
H
_r
H
L
L
L m
"L
Qn* Qn*
)x :
Doi/t
Care
A
•
Level
Change
•
:
No Change
c
-
2
-