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Teac MT-20D-IO - Page 137

Teac MT-20D-IO
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8
Check
if
the
individual
values
measured
in
steps
3,
and
7
are
within
the
following
ranges.
i)
Azimuth
ii)
Off
track
-9
to
+9
minutes
(each
track)
-50
to
+50
micrometers
(each
track)
5
9 When
only
check
may
be
made,
successively
follow
the
procedure
given
in
item
(d).
Note
1:
As
for
the
above-mentioned
check,
key
in
"F"
successively,
and
repeat
measurement
on
each
track
three
times
or
more,
and
then
decide
the
measurement
values.
2:
When
the
check
is
made
with
the
burst
signal
VI
less
than
1.3
Vpp,
no
data
may
be
displayed
on
SOA.
Since
this
means
that
the
value
is
out
of
the
specification,
execute
the
alignment
adjustment.
3:
As
for
the
values
displayed
on
SOA,
DATA
1 I + I I
2.
I
31
means
2.3
minutes,
and
DATA
2 I
+.1
0 I 1 I 9 I
means
19
micrometers.
4:
If
the
measured
azimuth
value
are
out
of
the
specifi-
cation,
1+
I 1 0 I F I
is
indicated
on
the
DATA
1
display.
(c)
If
the
results
of
measurement
in
item
(b)
are
out
of
the
specifi-
cations,
make
the
alignment
adjustment
with
the
adjusting
screws
in
the
following
procedure
(Fig.
426).
1 Key
in
"5"
on
rewind
the
tape.
2 Key
in
"A22",
and
further
"0",
and
adjust
each
burst
signal
of
tack
2
displayed
on
the
oscilloscope
as
follows
(Fig.
425).
(i)
Azimuth
Turn
the
azimuth
adjusting
screw
until
the
difference
between
V4
and
V5
is
minimized.
(ii)
Off
track:
Turn
the
off
track
adjusting
screw
A
until
the
difference
between
V2
and
V3
is
minimized.
3 Key
in
"F"
to
stop
the
operation.
- 4044 -

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