English
E-35
Appendix
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 power cord and contact your authorized YAMAHA dealer or service center.
Troubleshooting
General
T
uner
Problem
This system does not work normally.
The sound suddenly goes off.
No sound from speakers.
No sound from the external unit
connected with this system.
Timer cannot be set.
This system will not operate properly.
The volume level cannot be increased, or
sound is distorted.
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.
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
terminals on the rear of the main unit is
turned off.
Interference from starting motor of nearby
car.
Interference from thermostat of nearby
electrical 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 source such as
lightning, fluorescent lights, electric
motors or thermostat of nearby electrical
appliance.
TV or microprocessor 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 power cord from the AC outlet.
After about 30 seconds pass, 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.
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.
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 appropriate 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 microprocessor.
Properly connect AM loop antenna.
Change orientation of AM loop antenna.
Install an external AM antenna.
