Yamaha RX RX-Z7 Owner's Manual page 137

■ HDMI
Problem
No picture or sound. The number of the connected HDMI
components is over the limit.
HDCP authentication failed.
■ Tuner (FM/AM)
Problem
FM stereo reception is
noisy.
There is distortion, and
clear reception cannot
be obtained even with a
FM
good FM antenna.
The desired station
cannot be tuned into
with the automatic
tuning method.
Previously preset
stations can no longer
be tuned into.
The desired station
cannot be tuned into
with the automatic
tuning method.
There are continuous
crackling and hissing
AM
noises.
There are buzzing and
whining noises.
■ HD Radio (U.S.A. model only)
Problem
This unit cannot The radio station provides analog FM/
receive the HD Radio AM radio service only.
signals of the
The signal is too weak.
selected radio
station.
This unit cannot The radio station provides an audio
select other audio
program only.
programs than the
main program.
HD Radio information The radio station does not provide the
does not appear.
information.
Cause
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.
This unit has been disconnected for a
long period.
The signal is weak or the antenna
connections are loose.
Supplied AM loop antenna is not
connected.
Noises can result from lightning,
fluorescent lamps, motors, thermostats
and other electrical equipment.
A TV set is being used nearby.
Cause
Remedy
Reduce the number of the connected HDMI
components.
Check that the connected HDMI components support
the HDCP copy protection standards.
Remedy
Check the antenna connections.
Try using a high-quality directional FM
antenna.
Use the manual tuning method.
Adjust the antenna position to eliminate
multi-path interference.
Use a high-quality directional FM antenna.
Use the manual tuning method.
Preset the stations again.
Tighten the AM loop antenna connections
and orient it for the best reception.
Use the manual tuning method.
Connect the AM loop antenna correctly even
if you use an outdoor antenna.
Use an outdoor antenna and a ground wire.
This will help somewhat, but it is difficult to
eliminate all noise.
Move this unit away from the TV set.
Remedy
Select other radio stations that provides the HD
Radio service.
Adjust the antenna position.
Use a high-quality FM/AM antenna.
Troubleshooting
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137
En