Kenwood KT-7500 Instruction Manual page 9

t
POINTS
TO
BE
CHECKED PRIOR TO SERVICING
ln
initially
¡nstalling
this tuner, improper
connections may result
in one of the following ind¡cations. Their possible
causes and
corrective
measures
are listed
below
to
facilitate
installation.
lf
you
cannot
find
or correct
it,
see
your
audío
dealer.
SYMPTOM PROBABLE CAUSE CORRECTION
Continuous low frequency
buzz.
Most
noticeable at night on weak
signal stations.
Poor AM
reception.
ln
ferroconcrete build¡ngs
or in
areas
remote
from
the broadcasting station.
lnterference
from electrical
appliances or
atmospherics.
Erecting
a 1O
meter
outdoor
antenna and
securing
good ground conditions
should
reduce interference considèrably.
Complete elimination
is
diff icult.
An outdoor
antenna necessary.
Continuous high frequency whine which
increases
at night.
10 kHz
beat
¡nterference
from
adjacent
AM station.
TV
interference.
Turn
TV
off.
(Neighboring
TV
set
may
also be
the
cause).
lmpossible
to
el¡minate from tuner
side.
Use
HIGH Filter
to
cut
off
high fre-
quency interference, amplif ier
side.
lnterm¡ttent
buzzing
or
sharp cracking
noise,
Lightning interference.
Interference
from
fluorescent lamps.
AC plug
Connection.
Usually unavoidable
in
certain
areâs.
Occurs
when
lamps are
on
and cannot
be
helped.
Try
reversing
AC
plug
connections.
Occurs
only on
certain
stations due
to
high voltage
power line and
cannot
be
helped
in
many
areas.
Continuous hiss
or
buzzing interference
with
broadcast.
Becomes
louder during stereo,
lncoming signal too
weak at
ANT terminal
Erect outdoor FM antenna
if
only indoor
T-type
is used.
A
5 or 7 element antenna
is
necessary
if
you
are
located
at
a
considerable dis-
tance
from the
broadcasting station.
Occasional sharp
buzzing
or
crackling
noise.
FM
Automatic
Circuit
fails
to
respond
to
stereo broadcast.
Automobile ignition noise.
More notice-
able on weak
signals.
lncoming signal is exceptionally
wéak.
Erect
outdoor FM
antenna as
far
away
from
roads
as
pract¡cable.
Erect an FM
outdoor
antenna.
KT-7500(K) g