Technics RS-D200

Noise-reduction
systems
are
designed
to
reduce
the
annoying
characteristic
‘‘hiss”
noise
during
playback,
by
recording
on
the
tape
by
the
noise-reduction
system.
This
unit
equipped
with
noise
reduction
systems
(the
Dolby
B
noise-reduction
system).
Use
whichever
type
is
most
appropri-
ate
to
your
other
equipment,
the
recording
sound
source,
tape
used,
etc.
@
Dolby
B-type
noise-reduction
system
The
recording
is
made
by
increasing
the
high-frequency
compo-
nents
which
are
low
level,
and
then,
during
playback,
only
those
components
increased
during
recording
are
played
back
at
a
lower
level.
The
result
is
that
the
noise-reduction
effect
is
maintained
in
the
high-frequency
range,
tape
noise
is
reduced,
and
the
dynamic
range
is
expanded.
m
Examples
of
noise-reduction
system
use
eWhen
you
playback
a
prerecorded
Dolby
noise-reduction
music
tape.
eWhen
you
want
to
maintain
interchangeability
of
tape
with
some
other
tape
deck
equipped
with
the
Dolby
noise-reduction
system.
Otherwise,
use
either
system
that
you
prefer.
Notes:
@Be
sure
to
use
the
same
noise-reduction
system
for
playback
as
was
used
for
recording,
because
the
hiss
noise
can
only
be
reduced
by
the
combination
of
recording/playback
with
the
same
type
of
system.
It
is
recommended
to
make
a
notation
(on
the
cassette
label)
of
the
type
of
noise-reduction
system
which
was
used
for
recording.
In
order
to
get
the
best
results
of
the
features
of
a
noise-
reduction
system,
the
recording
sound
source
should
have
a
good
S/N
ratio.
Note
that
noises
(such
as
scratches
on
a
phono
disc)
which
are
included
in
the
sound
source
cannot
be
reduced
by
noise-
reduction
system.
@ Maintenance of the heads
The head assembly, capstans and pinch rollers should be
cleaned after about each 10 hours of use in order to maintain
good sound quality.
1. Cleaning with a cotton swab
"(df the ‘parts. are
very dirty, use a
“small amount of
© alcohol on the cot-
ton.swab.)
iat: Record/play head
Erase head
2. Cleaning with a head-cleaning tape cassette (optional)
1) Insert the cassette into the tape holder.
2) Switch on the power supply in accordance with the
procedure for tape operation described, and then press
the play button. The surface of the heads will be cleaned in
a few seconds.
m@ Head demagnetization
The head assembly should be demagnetized after about each 50
hours of use in order to maintain good sound quality.
The head assembly becomes magnetized, causing noise in
recordings and unwanted erasure of valuable recordings, if a
magnetized screwdriver or other metal tools come near the head
assembly, and when the heads have been used for a long period
of time.
If the heads become magnetized, use a head demagnetizer
(option).
Note:
When demagnetizing the head assembly, be sure to first push
the power switch to release it outward (m1) to the ‘‘off”
position.