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Appendix
Troubleshooting
Refer to the chart below when this system does not function properly. If the problem you are experiencing is not listed
below or if the instruction below does not help, disconnect the supply lead and contact your authorized YAMAHA dealer or
service center.
Problem
This system does not work
normally.
The sound suddenly goes off.
No sound from speakers.
No sound from the rear
speakers.
No sound from the center
speaker.
No sound (or no picture)
from the external unit
connected to this system.
Timer cannot be set.
This system will not operate
properly.
The volume level cannot be
increased, or sound is
distorted.
A picture of the TV is
disturbed.
Excessive static in FM
broadcasts.
Noise increases during stereo
broadcasts.
Stereo broadcasts are noisy
and STEREO indicator blinks
on and off.
Preset stations cannot be
selected.
Buzzing or static during AM
broadcasts.
AM broadcast sensitivity is
poor.
Cause
There is an influence of strong external
noise (lightning, excessive static electricity,
etc.) or the system was operated incorrectly.
The protection circuit was activated because
of a short circuit, etc.
The SLEEP timer was activated.
Speaker connections are not secure.
The sound output level to the rear speakers
is set to minimum.
Incorrect sound field program selection.
No sound field program is selected.
The sound output level to the center speaker
is set to minimum.
Incorrect sound field program selection.
No sound field program is selected.
Incorrect cord connections.
Input source selection is not correct.
Current time is not set.
The internal microcomputer has been frozen
by an external electric shock (lightning,
excessive static electricity, etc.) or power
supply with low voltage.
The component connected to the AUX/MD
or VCR terminals on the rear of the main
unit is turned off.
There is an influence of magnet from the
center speaker.
Interference from starting motor of nearby
car.
Interference from thermostat of nearby
electric appliance.
Antenna input is too weak due to
obstructions or excessive distance from
broadcasting station.
Insufficient antenna input.
Preset memory has been erased.
Interference from sources such as lightning,
fluorescent lights, electric motors or
thermostat of nearby electric appliance.
TV or this system is being used nearby.
Radio signal is weak or antenna is not
properly connected.
What to Do
Set this system to the standby mode and disconnect the
AC supply lead from the AC outlet. After about 30
seconds, connect the power and operate this system
again.
Set this system to the standby mode, then turn on to
reset the protection circuit.
Cancel the SLEEP timer function.
Secure the connections.
Raise the sound output level to the rear speakers.
Select the appropriate program.
Raise the sound output level to the center speaker.
Select the appropriate program.
Connect the cords properly. If the problem persists, the
cords may be defective.
Make a correct input source selection.
Set current time.
Unplug the AC supply lead from the wall AC outlet,
then plug in again after about one minute.
Turn on the power to the component.
Place the center speaker apart from the TV.
Position the FM antenna as high and as far away from
nearby roads as possible. Use coaxial cable.
Check antenna connections.
Install a multi-element type FM antenna if possible.
Install an antenna suited for the electric field strength
of your area.
Reprogram memory presettings.
Problem is difficult to eliminate but can be lessened by
grounding AM loop antenna.
Move away from TV or this system.
Properly connect AM loop antenna.
Change orientation of AM loop antenna.
Install an external AM antenna.
GeneralTuner
50


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