OCC-l
DIAGNOSTIC DISKETTE
Entering
the
letter
P
(pre-test)
will
cause
the
tests
to
be
performed
twice.
If you
enter
the
letter
F
(final-test)
the
test
will be
performed
five
times.
If
you
type
the
letter
L (loop-test)
the
tests
will run
twenty-five
times.
When you input
the
letter
of
the
test
type
you
want
to
run,
the
test
will
start
and a new
screen
will be
displayed.
The
top
line
of
the
screen
will
indicate
whether
you
are
running a single
density,
double density,
or
both
test.
"TEST CYCLE" is
the
number
of
times
the
test
has
completed
running.
The
next
line
indicates
"HARD
ERROR
TOTALS ARE:" Below
the
word "ARE"
the
number
of
hard
(unrecoverable)
errors
will be
listed
corresponding
to
each
of
the
test
names
(MEMORY, PARALLEL PORT, SERIAL PORT, DRIVE A, DRIVE
B).
If
an
error
occurs
during
the
diskette
drive
test
the
words "REJECT"
or
"POSSmLE
REJECT" will be displayed on
the
screen.
This depends upon
the
number
of
errors
which
occurred
during
the
test.
This informs you
that
the
disk
drive
or
diskette
itself
is not
performing
as
expected.
The
bottom
line
of
the
screen
displays
the
currently
running
test
on
the
left
side,
and
the
memory location, in
hexadecimal
if
a memory
test
is being run, on
the
right
side
of
the
screen.
If a
diskette
test
is running,
the
current
track
which is
under
test
will
be
displayed on
the
right
side
of
the
screen.
There
are
four
SUb-tests which
are
run during
the
"0"
test
under
the
heading
of
memory. They
are
"REFRESH, GALPAT (Galloping
Pattern),
V-BAR, and MOVING
DIAGONAL". Each
of
these
test
various functions
of
the
memory
locations
on
the
Logic Board. All
of
these
tests
are
not run in
every
cycle.
The Moving Diagonal
test
is
run
in
the
second
cycle
of
the
test
(this
test
may
take
approximately
20
minutes
to
run). These
tests
can
also
be
run independently from
the
"main
menu" by
selecting
tests
A,
B,
C,
or
D.
When
the
Memory
Tests
complete
the
"SERIAL PORT"
test
is
performed.
This
tests
the
operation
of
the
"SERIAL RS232"
Port
and
the
control
circuits
on
the
Logic
Board. The loopback plug must be
installed
to
loop
the
test
signals
back
into
the
Logic Board
for
verification.
If
the
plug is
not
installed
the
test
will
fail.
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