5.
Check the
A30 Front
Keyboard
The A30
front
keyb
oard can
be
chec
ked
using
the
external
test
50:
FR
ONT
P
ANEL
DIA
G.
a.
Press
4
PRESET
5
,
4
SYSTEM
5
,
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
SERVICE
MENU
,
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
TESTS
,
4
5
5
,
4
0
5
,
4
x1
5
,
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
NN
NN
EXECUTE
TEST
to
run the
external
test
17.
b.
Press all
of the
fron
t
panel
k
eys.
The
pressed
abbreviated
k
ey
name
should
b
e
displa
y
ed
at
a
k
ey
pressed.
When
y
ou
rotate
the
RPG
knob,
the
RPG tuned
direction (CW
or
CCW)
and
its
resp
onse sp
eed (SLO
W, MID,
FAST)
should
b
e
displa
y
ed.
So
y
ou
can
c
hec
k
ev
ery k
ey
on
the
A30
Keyb
oard
except
for
4
PRESET
5
. (If
y
ou
w
an
t
to
exit
this
test,
press
4
PRESET
5
.)
If one
or more
keys
seems
to
b
e
defectiv
e,
replace
the
A30
fron
t
k
eyb
oard.
If
all
k
eys
seem
to
b
e
go
o
d,
the
A30
fron
t
k
eyboard
is v
eried. Con
tin
ue
with
the
next
Che
ck
the
A53
FDD
.
6.
Check
the
A53
FDD
The
A53
FDD
(Flexible
Disk
Driv
e)
can
b
e
c
hec
k
ed
using
the
external
test
51:
DSK
DR
F
ALUT
ISOL'N.
a.
Press
4
PRESET
5
,
4
SYSTEM
5
,
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
SERVICE
MENU
,
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
TESTS
,
4
5
5
,
4
1
5
,
4
x1
5
,
N
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
N
N
N
N
N
N
EXECUTE
TEST
to
run
the
external
test
51.
b.
As
the
analyzer
instructs,
insert
a
exible
disk
in
to
FDD.
Use
a
formatted
but
blank
exible
disk,
otherwise
the data
on
the
disk
will
b
e
o
v
erwritten
b
y
this
test.
Then
press
N
N
N
N
N
N
N
N
N
N
N
N
N
N
CONT
.
c.
Chec
k
the
test
result,
PASS
or
F
AIL,
that
is
displa
y
ed
at
the
end
of
the
test.
If
this
test
fails,
replace
the
A53
FDD.
7.
Check
the
A32
I-BASIC
Interface
and
the
mini
DIN
Keyboard
The
mini
DIN
external
k
eyb
oard
is
connected
to
the
A32
I-BASIC
I/O
connector,
and
is
used
to dev
elop programs.
If the
external k
eyboard
of
the
I-Basic
is
not
w
orking,
p
erform
the
follo
wing
pro
cedure
to
v
erify
the
k
eyb
oard.
Press
4
PRESET
5
,
4
SYSTEM
5
,
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
SERVICE MENU
,
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
N
TESTS
,
4
1
5
,
4
x1
5
,
N
N
N
N
N
N
N
N
N
N
N
N
NN
NN
NN
NN
NN
NN
NN
N
N
N
N
N
N
N
N
N
N
N
N
EXECUTE TEST
to
run
the
in
ternal
test 1: A1 CPU.
If the in
ternal test 1 passes, the Agilen
tdriv
er circuit on the A1 CPU is probably
working.
Inspect cables bet
ween the external
keyboard and the A1 CPU through the A32 I-BASIC
interface. If the cable is go o d, replace the external k
eyboard.
If the in
ternal test 1 fails, replace the A1 CPU.
8-10 Digital Control Troubleshooting
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