Akai AX80 Service Manual page 10

V.
PRINCIPAL
PARTS LOCATION
VI.
IC
VERIONS
1)
There
are three versions
of
AX80s
by using
different
types, lot
numbers and
programs of
ICs.
2)
These IC combinations must
be used
for
the
optimum
results.
3)
Three
combinations.
ROM
IC4 (//PD2764 D) Voice IC 106- 806
in
VOICE
in
CPU
PCB.
PCB
(ECM3372)
Program
Versions Types Lot
Numbers
I
B
8425
I
B
8427
K
C
N/A
4)
How
to distinguish the differences.
y
r
842
EM 337
2
8425
3I60B-OI
I
CEM 3372
I
CEI
|
8427 3I60B-0I
|
306.
_
INDICATING TYPES
3372
3060C-0I
}|S
I
AX-80
I
IaX-80k|
INDICATING
PROGRAM VERSIONS.
Fig.
6-1
r
SERVICE
MANUAL
AX80-
9