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MODEL:
AX-80
002
Subject:
Parts information
No.
AX-80/
1
DATE:
April
1985
Change
of
Part Name.
Because
of the
new type
IC
TC4Q13BP production, the
IC
manufacture
has
changed the name
of old type IC
TC4013BP
to
TC4Q13BAP.
Old type
IC
TC4Q13BP 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
AX-80 even when
a
new TC4Q13BP
is
installed.
The new type
IC
can be identified by
its Lot
Number.
The letter
"b"
will
be
added
to its
Lot Number.
Old type TC4013BP
New type TC4013BP
8501H
8522HB
The chart below shows the difference
of their
function.
TRUTH TABLE
TC4013BP
,
NEW
TRUTH TABLE
TC4013BP
INPUTS
OUTPUTS
CL
PR
D
CP
A
Qn+1 Qn+1
L
H
;I5
•5
H
L
H
L
;S
L
H
H
H
ft
hsr
H
L
L
L
J"
L
H
L
L
H
_r
H
L
L
L
?«
Qn*
Qn
«
:
Don't Care
A
:
Level Change
•
:
No
Change
INPUTS
OUTPUTS
*
CL
PR
D
CP
A
Qn+1 Qn+1
L
H
;%
8
H
L
H
L
L
H
,
H
H
H
L
L
L
L
H
L.
H
S
H
L
L
L
;r
~L
Qn*
Qn'
:
Don't
Care
A
•
Level Change
•
:
No
Change
MODEL:
AX-80
003
Subject:
To improve performance
No.
AX-80/2
DATE:
May 1985
For the ease
of
the adjustment on Voice P.C. Board, the following parts have
been changed.
Ref. No.
Previous
New
2-R105-805
2-R124-824
2-R139-839
2-R144-844
10K
10K
300K
(F)
30K
(F)
100K CB.
100K CB.
750K CB.
33K CB.
Changed from
:
Nov. 1984
Service
ref. no.
:
BB-5406X, BB-5621X
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