Service manual
DOUBLE-DENSITY
DISK
CONTROLLER
.....
1
4
-'17
To
begin
the
alignment
procedure,
insert
the
alignment diskette
into
the
drive
whose
hardware configuration
number
appears
in
the
message
and
press RETURN.
The
pro-
gram will print:
Enter
track
number <0>
At
this
point, enter
the
first track
number
(as directed by
the
manual
provided
with
the
alignment disk)
and
press RETURN.
The
system will
then
print,
Enter
side
number <0>
Enter
the
side
number
(as
per
the
directions
provided
with
the
alignment
disk
and/or
disk drives)
and
press RETURN.
The
system will print:
CTRL-C
CTRL-C
request
another
track
return
to
menu
This message instructs
you
to
type
CTRL-C once
to
change
the
track
number
which
you
entered above, or
type
CTRL-C twice
in
succession to
return
to
the
TEST
menu.
You will probably
need
to
change
the
track
number
at
least twice,
but
this
will
vary,
and
you should follow
the
alignment disk
and
disk drive manufacturer's instructions, To
change the
current
track number,
type
CTRL-C once.
The
program will print:
Enter
track
number <0>
Now enter
the
new
track
number
and
press RETURN.
The
system will again print:
CTRL-C
CTRL-C
request
another
track
return
to
menu
When you have selected all tracks designated
in
the
manufacturer's instructions,
and
achieved
the
desired oscilloscope displays for all designated tracks,
type
CTRL-C twice
in
succession
to
return
to
the
TEST
menu.
V-SWITCH
This procedure will restart TEST, thereby enabling
you
to
select another drive
unit
to be
tested, or to insert a
new
diskette. After you have
typed
U
and
pressed RETURN, TEST
will restart itself.
When
you are asked
which
drive you
want
to test, enter
the
hardware
number
of
the
drive
you
want
to test. You
can
change
the
diskette
when
you are asked
to
insert
the
diskette you
wish
to
use
for
this
test.
If
you are inserting a
new
diskette,
be
sure
to
use
TEST
menu
option
F to format
the
diskette before
you
perform tests.
Note that using
"Switch"
will enable you
to
alternate among
your
drives for as long as
you
wish
to test them.
E-EXIT
To exitTEST,
type
E
and
press RETURN.
This
will
return
you to
the
diagnostic
program's
main
menu.