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APPENDIX
A:
Problems and
Error
^
Messages
Unreadable
Disks,
Files,
and Programs
If
you suddenly cannot use
your
disk,
fi!es
;
or
programs,
static
electricity
might
be
the
cause.
Try humidifiers
and
anti-static
carpets
to
get
rid
of static electricity.
There
are other
causes.
The Systems
built-in
AC
line
filter
shields
the
system
from minor
changes
in
AC
power
but
extreme
changes
can
ruin
programs and
files.
If
you
think
this
is
the
problem,
try
these remedies;
*
Fix
defective
switches
on nearby machines.
•
Install
bypass/isolation
devices on
noisy
machines
in
your
area.
•
Install
a separate
power
line to
your system.
Error
Messages
Whenever
the
System
is
turned
on
or
reset,
it
executes
a
built-in
diagnostic
program
to
help
insure
that
the
System
is
in
good
working
order.
If
the
System
detects
a
hardware
fault
or
other
problem,
it
will
display
an
error
message
—
then
stop.
This
checkout program reduces
the
chance
that
you
will
lose
time
or
data
without
knowing
it
because
of
a
defective system.
This
program does
not
check
for
multiple
faults;
as
soon
as
the
first
fault
is
found, the
System
displays the appropriate
message
and
stops.
Before suspecting
hardware
problems,
try
the operation several
times.
Recheck
to
see
that
all
power and
interconnections are
correct.
As
a
last resort, try
re-formatting the
Operating
System on
the
Hard
Disk
Drive.
Remember!
FORMAT
will
erase
all
data
on
Drive
4.
To
prevent
losing
data
altogether,
be
sure
to
keep backup
copies
of
all
data
on
the disk
as you
go
along.
If
a displayed
error
message
looks
like:
•
**
ERROR
24
**
or
FILE
NOT
FOUND,
see
the
Operating
System
Errors
table,
•
BOOT ERROR
DC, see
the
Boot
Errors
table.
•
Neither
of
the
above, see your
application
program
manual.
(It
might
also
be
a
descriptive operating
system
error
generated
by
the application
program,)
To
get a
brief
description
of
a
numbered
error,
type
ERROR
followed
by
the
number.
For
example,
type:
ERROR
31
(
ENTER!
and
your screen shows:
PROGRAM NOT FOUND
39
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