Yamaha RX-797 Owner's Manual page 51

TROUBLESHOOTING
The sound is
The power ofthis unit is tumed off, or this Tum on the power of this unit.
degraded when
unit is set to the standby mode.
listening with the
headphones
17
connected to the CD
player or the tape
deck connected to
this unit.
The sound level is The LOUDNESS control is functioning.
Set the LOUDNESS control to the FLAT position.
20
low.
The input
source The CD DIRECT AMP button is turned Tum off the CD DIRECT AMP button.
cannot be changed
on.
20
although the INPUT
selector is rotated.
Using the BASS, The CD DIRECT AMP or the PURE The CD DIRECT AMP or the PURE DIRECT button
TREBLE, BALANCE
DIRECT button is turned on. must be turned off to use those controls.
and LOUDNESS
20
controls does not
affect the tonal
quality.
• Tuner
Problem
Cause Remedy
See
page
FM stereo The particular characteristics of the FM
Check the antenna connections.
14
reception is
stereo broadcasts being received may
Try using a high-quality directional FM antenna.
noisy.
cause this problem when the transmitter is
Try using the manual tuning method.
too far away or the antenna input is poor.
25
There is
There is multipath interference. Adjust the antenna position to eliminate the multipath
distortion, and interference.
clear reception
cannot be
-
obtained even
with a good FM
FM
antenna.
The desired
The signal is too weak. Try using a high-quality directional FM antenna. 14
station cannot
be tuned in Try using the manual tuning method.
with the
25
automatic
tuning method.
Previously
This unit has been disconnected for a long Preset the stations again.
preset stations
period.
26
can no longer
be tuned in.
The desired
The signal is weak or the antenna Tighten the AM loop antenna connections and orient
station cannot
connections are loose. it for the best reception.
-
be tuned in
with the
Try using the manual tuning method.
automatic
25
tuning method.
AM
There are
The noises may result from lightning,
Try using an outdoor antenna and a ground wire.
continuous
fluorescent lamps, motors, thermostats or This will help somewhat, but it is difficult to
-
crackling and
other electrical equipment. eliminate all noise.
hissing noises.
There are A TV set is being used nearby.
Move this unit away from the TV set.
buzzing and
-
whining noises.
47
TROUBLESHOOTING
The sound is
The power ofthis unit is tumed off, or this Tum on the power of this unit.
degraded when
unit is set to the standby mode.
listening with the
headphones
17
connected to the CD
player or the tape
deck connected to
this unit.
The sound level is The LOUDNESS control is functioning.
Set the LOUDNESS control to the FLAT position.
20
low.
The input
source The CD DIRECT AMP button is turned Tum off the CD DIRECT AMP button.
cannot be changed
on.
20
although the INPUT
selector is rotated.
Using the BASS, The CD DIRECT AMP or the PURE The CD DIRECT AMP or the PURE DIRECT button
TREBLE, BALANCE
DIRECT button is turned on. must be turned off to use those controls.
and LOUDNESS
20
controls does not
affect the tonal
quality.
• Tuner
Problem
Cause Remedy
See
page
FM stereo The particular characteristics of the FM
Check the antenna connections.
14
reception is
stereo broadcasts being received may
Try using a high-quality directional FM antenna.
noisy.
cause this problem when the transmitter is
Try using the manual tuning method.
too far away or the antenna input is poor.
25
There is
There is multipath interference. Adjust the antenna position to eliminate the multipath
distortion, and interference.
clear reception
cannot be
-
obtained even
with a good FM
FM
antenna.
The desired
The signal is too weak. Try using a high-quality directional FM antenna. 14
station cannot
be tuned in Try using the manual tuning method.
with the
25
automatic
tuning method.
Previously
This unit has been disconnected for a long Preset the stations again.
preset stations
period.
26
can no longer
be tuned in.
The desired
The signal is weak or the antenna Tighten the AM loop antenna connections and orient
station cannot
connections are loose. it for the best reception.
-
be tuned in
with the
Try using the manual tuning method.
automatic
25
tuning method.
AM
There are
The noises may result from lightning,
Try using an outdoor antenna and a ground wire.
continuous
fluorescent lamps, motors, thermostats or This will help somewhat, but it is difficult to
-
crackling and
other electrical equipment. eliminate all noise.
hissing noises.
There are A TV set is being used nearby.
Move this unit away from the TV set.
buzzing and
-
whining noises.
47