Yamaha T-D500 Mode D'emploi page 19

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  • FRANÇAIS, page 22
Problem
FM stereo reception is
noisy.
There is distortion, and
clear reception cannot
be obtained even with a
good FM antenna.
FM
The desired station
cannot be tuned into
with the automatic
tuning method.
The Radio Data System
information does not
appear.
The desired station
cannot be tuned into
with the automatic
tuning method.
AM
There are continuous
crackling and hissing
noises.
There are buzzing and
whining noises.
■ General
Problem
This unit fails to turn on when
A is pressed.
A "humming" sound can be
heard.
This unit does not operate
properly.
This unit suddenly turns off.
Cause
The characteristics of FM stereo
broadcasts may cause this problem
when the transmitter is too far away or
the antenna input is poor.
There is multi-path interference.
The signal is too weak.
The Radio Data System information is
not provided by the radio station.
The signal is too weak.
The signal is weak or the antenna
connections are loose.
Noise can result from lightning,
fluorescent lamps, motors, thermostats
and other electrical equipment.
A TV set is being used nearby.
Cause
The power cable is not connected or
the plug is not completely inserted.
This unit has been exposed to a strong
external electric shock (such as
lightning or strong static electricity).
Incorrect cable connections.
The internal microcomputer has been
frozen by an external electric shock
(such as lightning or excessive static
electricity) or by a power supply with
low voltage.
The Auto Power Down function has
turned this unit off.
Remedy
Check the antenna connections.
Try using a high-quality directional FM
antenna.
Adjust the antenna position to eliminate
multi-path interference.
Use a high-quality directional FM antenna.
Use the manual tuning method.
Use a high-quality directional FM antenna.
Tighten the AM loop antenna connections
and orient it for the best reception.
Use the manual tuning method.
Use an outdoor antenna and a earth ground.
This will help somewhat, but it is difficult to
eliminate all noise.
Move this unit away from the TV set.
Remedy
Connect the power cable firmly.
Disconnect the power cable, plug it back in
after 30 seconds, then use it normally.
Firmly connect the audio connection cord
plugs. If the problem persists, the cables may
be defective.
Disconnect the AC power plug from the
outlet and then plug it in again after about
30 seconds.
Change the auto power down setting.
TROUBLESHOOTING
See
page
4
11
11
See
page
4
4
9
17
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