Yamaha RX-497 - Инструкция по эксплуатации - Страница 39

37

TROUBLESHOOTING

ADDITION

AL 

IN
FO
RMA

T

IO
N

English

■

Tuner

The sound is 
degraded when 
listening with the 
headphones 
connected to the CD 
player or the tape 
deck connected to 
this unit.

The power of this unit is turned off, or this 
unit is set to the standby mode.

Turn on the power of this unit.

14

The sound level is 
low.

The LOUDNESS control is functioning.

Set the LOUDNESS control to the FLAT position.

16

Using the BASS, 
TREBLE, BALANCE 
and LOUDNESS 
controls does not 
affect the tonal 
quality.

The PURE DIRECT button is turned on.

The PURE DIRECT button must be turned off to use 
those controls.

16

Problem

Cause

Remedy

See 

page

FM

FM stereo 
reception is 
noisy.

The particular characteristics of the FM 
stereo broadcasts being received may 
cause this problem when the transmitter is 
too far away or the antenna input is poor.

Check the antenna connections.
Try using a high-quality directional FM antenna.

12

Try using the manual tuning method.

21

There is 
distortion, and 
clear reception 
cannot be 
obtained even 
with a good FM 
antenna.

There is multipath interference.

Adjust the antenna position to eliminate the multipath 
interference.

—

The desired 
station cannot 
be tuned in 
with the 
automatic 
tuning method.

The signal is too weak.

Try using a high-quality directional FM antenna.

12

Try using the manual tuning method.

21

Previously 
preset stations 
can no longer 
be tuned in.

This unit has been disconnected for a long 
period.

Preset the stations again.

22

AM

The desired 
station cannot 
be tuned in 
with the 
automatic 
tuning method.

The signal is weak or the antenna 
connections are loose.

Tighten the AM loop antenna connections and orient 
it for the best reception.

—

Try using the manual tuning method.

21

There are 
continuous 
crackling and 
hissing noises.

The noises may result from lightning, 
fluorescent lamps, motors, thermostats or 
other electrical equipment.

Try using an outdoor antenna and a ground wire.
This will help somewhat, but it is difficult to 
eliminate all noise.

—

There are 
buzzing and 
whining noises.

A TV set is being used nearby.

Move this unit away from the TV set.

—