Marantz SD-60 - Cassette Recording Best Practices; Tape Selection and Usage; Protecting Valuable Recordings; Variable Bias Control Explained

MAKING
OPTIMUM
CASSETTE
RECORDINGS
TYPE
AND
BRAND
OF
TAPES
TO
USE
In
cassette
recording,
the
type
and
brand
of
cassette
you
use
has
a
great
influence
on
the
quality
of
your
recordings.
Therefore,
it
is
advantageous
to
purchase
the
highest
qual-
ity
cassette
available.
Chromium
dioxide
(CrO2)
and
metal
tapes
generally
provide
better
fidelity
than
normal
ferric
oxide
tape.
We
recommend
the
use
of
cassettes
with
a
recording
capacity
of
90
minutes
or
less.
In
production,
the
perfor-
mance
of
our
cassette
decks
is
tested
using
the
following
tapes:
Type of Tape Ref. No.
Market Name
|
_Normal
__
|
TDK
AC224(C-60)
TDK
AD
Special/CrO2__|
TDK
AC513(C-60)
TDK
SA
|
Metal
«(|
TOK
AC712(C-60)
TDKMA
| __ TDK MAR
TO
PROTEDT
VALUABLE
RECORDINGS
In
the
record
mode,
information
previously
recorded
on
the
tape
will
automatically
be
erased.
To
prevent
this
from
happening,
use
a
small
screwdriver
to
break
out
one
or
both
safety
tabs
(see
Figure
4
for
side
A).
It
is
possible
to
restore
the
recording
capability
of
either
side
of
the
cassette
by
covering
the
opening
with
cellophane
tape
(see
Figure
5
for
side
A).
VARIABLE
BIAS
CONTROL
Usually,
this
control
can
be
set
to
the
center
click
position
because
it
has
been
adjusted
to
provided
the
optimum
bias
at
that
position.
However,
strictly
speaking,
the
value
of
the
bias
providing
the
flattest
frequency
characterintics
varies
slightly
depending
on
the
type
and
maker
of
the
tape.
Therefore,
to
obtain
the
maximum
performance
from
each
tape
used.
Note:
The
VARIABLE
BIAS
control
has
no
effect
during
playback.
The bias characteristic is generally flat with metal tapes.
As a result, the VARIABLE BIAS control allows adjust-
ment
only
with
the
NORMAL
or
CrOz
position,
and
the
bias
is
constant
with
the
METAL
position
regardless
of
the control knob position.
NOTES ON INSTALLATION
When the deck is installed on or near other audio equip-
ment hum sometimes occurs. Position the equipment so
that the hum ceases. Always install the unit horizontally.
This model incorporates a microprocessor with high perfor-
mance. In case of any malfunction due to staticelectricity,
etc., please turn off the POWER switch, and after 30 seconds
turn it on again.
CARE AND MAINTENANCE
This
section
describes
the
care
and
maintenance
tasks
that
must
be
performed
to
optimize
the
operation
of
your
Marantz
equipment.
CLEANING
OF
EQUIPMENT
EXTERNAL
SURFACES
The
exterior
finish
of
your
SD-60
will
last
indefinitely
with
proper
care
and
cleaning.
Never
use
scouring
pads,
steel
wool,
scouring
powders
or
harsh
chemical
agents
(e.g.,
lye
solution),
alcohol,
thinners,
benzine,
insecticide
or
other
volatile
substances
as
these
will
mar
the
finish
of
the
equipment.
Likewise,
never
use
cloths
containing
chemical
substances.
If
the
equipment
gets
dirty,
wipe
the
external
surfaces
with
a
soft,
lint-free
cloth.
If
the
equipment
becomes
heavily
soiled:
—
dilute
some
washing
up
liquid
in
water,
in
a
ratio
of
one
part
detergent
to
six
parts
water
—
dip
a
soft,
lint
free
cloth
in
the
solution
and
wring
the
cloth
out
until
it
is
damp
~ wipe the equipment with the damp cloth
—
dry
the
equipment
by
wiping
it
with
a
dry
cloth.
REPAIRS
Only
the
most
competent
and
qualified
service
technicians
should
be
allowed
to
service
the
equipment.
The
Marantz
company
and
its
factory-trained
warranty
station
personnel
have
the
knowledge
and
special
facilities
needed
for
repair
and
calibration
of
this
precision
equipment.
After
the
warranty
period
has
expired,
repairs
will
be
performed
for
a
charge
if
the
equipement
can
be
returned
to
normal
operation.
In
the
event
of
difficulty,
refer
to
your
dealer
or
write
directly
to
the
nearest
location
to
you
that
is
listed
on
the
Marantz
Authorised
Service
Station
list.
If
writing,
please
include
the
model
and
serial
number
of
the
equipment
together
with
a
full
description
of
what
you
think
is
abnormal
about
the
equipment's
behaviour.
TROUBLE
SHOOTING
GENERAL
MALFUNCTION
If
the
equipment
malfunctions,
this
may
be
because
an
electrostatic
discharge
or
mains
interference
has
corrupted
the
information
in
the
equipment
memory
circuits.
Therefore:
—
disconnect
the
plug
from
the
mains
supply
—
after
waiting
at
least
three
minutes,
reconnect
the
plug
to
the
mains
supply
—
re-attempt
to
operate
the
equipment