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PLAYBACK
PERFORMANCE
PLAYBACK
HEAD
AZIMUTH
ADJUSTMENT
Coarse
Adjustment
PwNr
Connect
a level
meter
to
either
OUTPUT
jack.
Thread
a TEAC
test
tape
YTT-1003
on
the
unit.
Play
the
15 kHz
test
tone
in section
2 of
the
test
tape.
Slowly
rotate
the
azimuth
screw
until
maximum
indication
is
obtained
on
the
level
meter.
Repeat
step
4, procedure
for
reverse
head.
Fine
Adjustment
8.
CAUTION
After
coarse
adjustment,
do not
make
large
corrections,
turn
azimuth
screw
1/4
turn
or
less.
It
is absolutely
essential
to accomplish
the
coarse
adjustment
before
using
this
method
to
avoid
phase
errors
larger
than
45°
Connect
the
test
equipment
as
shown
in Fig.
7-8.
Play
a 10 kHz
signal
and
adjust
the
azimuth
screw
until
the
oscillo-
scope
shows
that
the
signals
are
less
than
45°
in phase.
Repeat
above
step
for
reverse
head.
Secure
the
screw
with
a drop
of LOCTITE.
HEIGHT
(Viewed
from
front
of head)
AZIMUTH
(Viewed
from
front
of head)
CORRECT
ALIGNMENT
TANGENCY
TILT
(Viewed
from
top
of
head)
(Viewed
from
side
of
head)
zg
le,
ee
HEAD
MIS-ALIGNMENT
FOUR
WAYS
e ALIGNMENT
-
The
physical
positioning
of a tape
head
relative
to
the
tape
itself.
Alignment
in all
respects
must
conform
to
rigid
re-
quirements
in order
for
a unit
to
function
properly.
e@ AZIMUTH
- The
angle
of
a tape
heads
pole-piece
slot
relative
to
the
direction
of
tape
travel.
Refer
to Fig.
5-1
HEAD
ALIGNMENT.
NOTE
In order
for
a tape
unit
to work
at
its
best,
with
its
own
tapes
as well
as
ones
made
on
other
units,
its
play
and
record
heads
must
be aligned
in the
four
ways
shown
above.
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