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Akai X-1810

Akai X-1810
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Vi.
SLIDE
SWITCH
ADJUSTING
SCREW
HEAD
HEIGHT
ADJUSTMENT
(See
Figs.
1
and
2)
Recording
Playback
Head
During
normal
(Forward)
play,
adjust
Screws
(a)
and
(b)
so
that
the
upper
edge
of
the
Rec/Playback
Head’s
upper
core
is
the
same
height
as
the
upper
edge
of
the
tape.
During
reverse
play,
adjust
Screw
(d)
so
that
the
lower
edge
of
the
Rec./Playback
Head’s
lower
core
is
the
same
height
as
the
lower
edge
of
the
tape.
Erasing
Head
Adjust
screw
(e)
so
that
the
upper
edge
of
the
upper
core
is
0.125
to
0.15
mm
higher
than
the
upper
edge
of
the
tape.
In
adjusting
Head
Height,
make
sure
that
the
front
of
the
Head
is
at
right
angles
to
the
Chassis
and
that
the
upper
and
lower
part
of
the
Head
firmly
contacts
the
tape.
ADJUSTMENT
OF
AZIMUTH
ALIGNMENT
Playback/Rec
Head
(See
Fig.
1,
2)
Use
a
pre-recorded
tape
(16
kHz,
7-1/2
ips),
and
connect
a
high
sensitivity
V.T.V.M.
to
the
line
output
jack.
Adjust
screws
(c)
so
that
line
output
voltage
is
maximum.
Erasing
Head
Visually
check
to
assure
that
the
center
line
of
the
Erasing
Head
is
at
right
angles
to
the
Head
Chassis.
MECHANISM
ADJUSTMENT
Fig.
1
Fig.
2
f=g=0.2mm~0.3mm
Fig.
3
Fig.
4
Clearance
of
the
Bias
Head
(See
Fig.
3,
4)
Unfasten
two
screws
and
move
the
Bias
Head
by
hand
until
the
clearance
(f)
and
(g)
reachs
O.2
to
0.3
mm.
Then
fasten
screws.
Note:
If
the
clearance
(f)
and
(g)
becomes
less
than
0.2
to
0.3
mm,
the
Frequency
Chwarac-
teristic
will
be
too
low,
but
Distoriiora
will
decrease.
If
the
clearance
(f)
and
(g)
becomes
more
than
0.2
to
0.3
am.
the
Frequency
Characteristic
will
be
tio
high,
but
Distortion
will
increase.

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