Yamaha RX-Z11 Owner's Manual page 148

Troubleshooting
Problem
A source cannot be
recorded by an analog
component connected to
the AUDIO OUT jacks.
The sound field
parameters and some
other settings of this unit
cannot be changed.
This unit does not operate
properly.
"CHECK SP WIRES"
appears in the front panel
display.
There is noise
interference from digital
or radio frequency
equipment.
The picture is disturbed.
This unit suddenly enters
the standby mode.
■ Tuner
Problem
FM stereo reception is
noisy.
There is distortion, and
clear reception cannot be
FM obtained even with a 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.
148
En
Cause
The source component is not connected to the
analog AUDIO IN jacks of this unit.
"Memory Guard" in "Option" is set to "On".
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.
Speaker cables are short-circuited.
This unit is too close to the digital or high-
frequency equipment.
The video source uses scrambled or encoded
signals to prevent dubbing.
The internal temperature becomes too high and
the overheat protection circuitry has been
activated.
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.
Remedy
Connect the source component to the analog AUDIO IN jacks.
Set "Memory Guard" to "Off".
Disconnect the power cable from the AC wall outlet and then
plug it in again after about 30 seconds.
Make sure all speaker cables are connected correctly.
Move this unit further away from such equipment.
Wait about 1 hour for this unit to cool down and then turn it
back on.
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.
See page
35
113
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See page
41
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69
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69
70, 71
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69
41
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