Yamaha RX-V470 - Manual (Page 25)

25
ENGLISH
If the unit fails to operate normally, check the following points to determine whether the fault can be corrected by the simple
measures suggested. If it cannot be corrected, or if the fault is not listed in the SYMPTOM column, disconnect the power cord
and contact your authorized YAMAHA dealer or service center for help.
SYMPTOM
The unit fails to turn on when the
POWER switch is pressed.
No sound or no picture.
The sound from all speakers or
only from the front speakers
suddenly goes off.
Only one side speaker outputs the
sound.
Sound “hums”.
The volume level is low while
playing a record.
No sound from the rear speakers.
No sound from the center speaker.
FM stereo reception is noisy.
There is distortion and clear
reception cannot be obtained even
with a good FM antenna.
A desired station cannot be tuned
in with Auto tuning.
A desired station cannot be tuned
in with Auto tuning.
There are continuous crackling and
hissing noises.
There are buzzing and whining
noises (especially in the evening).
The remote control transmitter
does not work.
The distance or range within which
the remote control transmitter can
be used decreases.
The sound is degraded when
monitoring is performed by using
the headphones connected to the
compact disc player or cassette
deck which are connected with this
unit.
CAUSE
Power cord is not plugged in or is not completely
inserted.
Incorrect output cord connections.
Appropriate input selector is not pressed.
The protection circuit has activated because of short
circuit or over power, etc.
Incorrect setting of the BALANCE control.
Incorrect cord connections.
Incorrect cord connections.
The record is being played on a turntable with an MC
cartridge.
The sound output level of the rear speakers is 0.
The monaural sound source is played in DOLBY PRO
LOGIC or ENHANCED mode.
The sound output level of the center speaker is 0.
The center mode is in PHANTOM mode.
Incorrect sound field program selection.
No sound field program is selected.
Because of the characteristics of FM stereo broadcasts,
this is limited to cases where the transmitter is too far
away or the antenna input is poor.
There is multipath interference.
The station is too weak.
Weak signal or loose antenna connections.
Noises will result from ligtning, fluorescent lamps,
motors, thermostats and other electrical equipment.
A television set is being used nearby.
Direct sunlight or lighting (of an inverter type of
flourescent lamp etc.) is striking the remote control
sensor of the main unit.
The batteries of this remote control transmitter are too
weak.
Power cord of this unit is not plugged in.
REMEDY
Firmly plug in the power cord.
Connect the cords properly. If the problem
persists, the cords may be defective.
Press the appropriate input selector corresponding
to the input source.
All speakers: Check the speaker cords, turn the
unit off and then on. Operate the unit after
reducing the volume.
Front speakers: Check the speaker cords and
reduce the volume.
Adjust it to the appropriate position.
Connect the cords properly. If the problem
persists, the cords may be defective.
Firmly connect the audio plugs. If the problem
persists, the cords may be defective.
The player should be connected to the unit through
the MC head amplifier.
Turn up the sound output level with the REAR level
control.
Select another program suitable for the monaural
sound source.
Turn up the sound output level with the CENTER
level control.
Select NORMAL or WIDE.
Select the appropriate program.
Check the antenna connections.
Try using a multiple element FM antenna.
Adjust antenna placement to eliminate multipath
interference.
Use Manual tuning mode.
Use a high quality directional FM antenna.
Tighten the AM loop antenna connections and
rotate it for best reception.
Use Manual tuning mode.
Use an outdoor antenna and a ground wire. This
will help somewhat but it is difficult to eliminate all
noise.
Move the television away.
Change the position of the main unit.
Replace the batteries with new ones.
Plug in the power cord.
Amplifier
Remote control transmitter
Others
AM
FM
TROUBLESHOOTING