Toyota 2006 Sienna Owner's Manual page 706

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"DTS" is a trademark of Digital Theater
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Audio/video system operating
hints
NOTICE
To ensure correct audio/video system
operations:
D Be careful not to spill beverages over
the audio system.
D Do not put anything other than a disc
into the slot.
D Do not put anything other than an ap-
propriate disc into the DVD player.
D The use of a cellular phone inside or
near the vehicle may cause a noise
from the speakers of the audio sys-
tem which you are listening to. How-
ever, this does not indicate a mal-
function.
RADIO RECEPTION
Usually, a problem with radio reception does
not mean there is a problem with your radio —
it is just the normal result of conditions outside
the vehicle.
AUDIO/VIDEO SYSTEM
For example, nearby buildings and terrain
can interfere with FM reception. Power lines
or telephone wires can interfere with AM sig-
nals. And of course, radio signals have a lim-
ited range. The farther you are from a station,
the weaker its signal will be. In addition, re-
ception conditions change constantly as your
vehicle moves.
Here are some common reception problems
that probably do not indicate a problem with
your radio:
FM
Fading and drifting stations — Generally, the
effective range of FM is about 40 km (25
miles). Once outside this range, you may no-
tice fading and drifting, which increase with
the distance from the radio transmitter. They
are often accompanied by distortion.
Multi-path — FM signals are reflective, mak-
ing it possible for two signals to reach your an-
tenna at the same time. If this happens, the
signals will cancel each other out, causing a
momentary flutter or loss of reception.
Static and fluttering — These occur when sig-
nals are blocked by buildings, trees, or other
large objects. Increasing the bass level may
reduce static and fluttering.
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