Marantz SR480 User Manual

TROUBLESHOOTING GUIDE
If
your
receiver
/
amplifier
should
not
perform
as
expected,
consult
the
table
below
to
see
if
the
problem
can
be
corrected
before
seeking
help
from
your
dealer
or
our
service
organization.
|
PROBLEM
POSSIBLE
CAUSE
REMEDY
|
No
power
e
¢
The
AC
input
cord
is
disconnected.
Connect
cord
securely.
:
¢
Poor
connection
at
AC
wall
outlet
or
the
outlet
¢
Check
the
outlet
using
lamp
or
other
appliance.
is
inactive.
,
The
sound
is
shut
off.
*
The
speaker
cables
are
shorted.
¢
Check
the
speaker
connections.
No
sound
from
the
speakers.
¢
The
speaker
cables
are
disconnected.
*
Check
the
speaker
connections.
:
¢
The
master
volume
is
adjusted
too
low.
*
Adjust
the
master
volume
and
center,
sunr.vol.
© The surround volume is adgusted too low.
e The center volume is adgusted too low.
¢
The
Mute
button
is
pressed
to
ON.
:
e
Press
the
MUTE
button
to
cancel
the
muting
;
effect.
¢
The
SPEAKER
switches
are
not
pressed
correctly.
|
*
Press
the
SPEAKER
switches
to
ON
correctly.
7
e
Incorrect
selection
of
program
source.
¢
Select
the
desired
program
source
correctly.
©
Format
of
surround
is
different.
¢
DISK
of
AC-3
format
is
used.
|
e
Incorrect
connections
between
the
components.
e
Make
connections
correctly.
Sound
is
only
heard
from
one
of
e
The
BALANCE
control
is
set
to
one
end.
e
Adjust
the
BALANCE
control.
front
speakers.
¢
One
of
the
connection
cords
is
disconnected.
e
Connect
the
right
and
left
connection
cords
securely. /
No
sound
from
the
rear
speakers.
¢
The
sound
field
mode
is
not
selected
correctly
e
Select
the
desired
sound
field
mode
correctly.
or is set to off.
¢
The
master
volume
and
rear
level
are
adjusted
e
Adjust
the
master
volume
and
rear
level.
too
low.
¢
Monaural
source
is
used,
or
source
without
e
Change
the
playback
source
to
the
stereo
or
surround
information.
surround
source.
No
sound
from
the
center
speaker.
e
The
DOLBY
DIGITAL
(AC-3),
DOLBY
PRO
LOGIC,
¢
Select
the
desired
mode.
DOLBY
PRO
LOGICTHEATER
or
DOLBY
3
STEREO
mode
is
notselected.
¢
The
center
mode
is
set
to
the
PHANTOM
mode.
e
Set
to
the
NORMAL
or
WIDE
mode.
¢
The
master
volume
and
center
level
are
adjusted
¢
Adjust
the
master
volume
and
center
level.
i
too
low.
;
The
remote
control
unit
does
not
.
e
Batteries
are
not
loaded
or
exhausted.
¢
Replace
the
with
new
batteries.
operate.
¢
The
remote
sensor
is
obstructed.
*
Remove
the
obstacle
from
the
remote
sensor.
Not
receiving
the
stations.
¢
No
antenna
is
connected.
¢
Connect
an
antenna.
(RECIEVER
ONLY)
e
The
desired
station
frequency
is
not
tuned
in.
¢
Tune
in
the
desired
station
frequency.
|
Not
receiving
the
preset
stations.
e
An
incorrect
station
frequency
has
been
¢
Memorized
the
correct
station
frequency.
(RECIEVER
ONLY)
memorized.
:
¢
The
memorized
stations
are
cleared.
¢
Memorize
the
stations
again.
Poor
FM
reception.
¢
No
antenna
is
connected.
¢
Connect
an
antenna.
(RECIEVER
ONLY)
¢
The
antenna
is
not
positioned
for
the
best
¢
Change
the
position
of
the
antenna.
reception.
Route
as
high
as
possible.
Continuous
hissing
noise
during
FM
_
©
Weak
signal.
¢
Change
the
position
of
the
antenna.
reception,
especially
when
a
stereo
e
In
areas
remote
from
the
transmitter,
a
5
to
broadcast
is
received.
8
element
antenna
designed
exclusively
for
(RECIEVER
ONLY)
:
.
FM
is
suggested.
l.
Continuous
or
intermittent
hissing
¢
Noise
is
caused
by
motors,
fluorescent
¢
Keep
the
receiver
away
from
noise
sources.
noise
during
AM
reception,
especially
lamps
or
lightning,
etc.
.
at
night.
:
¢
Install
an
outdoor
AM
antenna.
A
hum
can
be
heard
during
AM
¢
The
AC
input
cord
may
be
too
close
to
the
AM
*
Position
the
AC
input
cord
away
from
the
reception.
loop
antenna
or
the
antenna
wire.
antenna
wire
and
the
AM
loop
antenna.
(RECIEVER
ONLY)
*
Adjust
the
position
of
the
AM
loop
antenna.
1
14

Marantz SR480 Specifications

General

Total Harmonic Distortion (THD)	0.08%
Power Output	80 watts per channel into 8Ω (stereo)
Tuning range	FM
Input Sensitivity	200mV
Speaker load impedance	8 ohms