50
Problem
No sound from the center
speaker.
No sound from the rear
speakers.
No sound from the
subwoofer.
Poor bass
reproduction.
A “humming” sound can
be heard.
The volume level cannot be
increased, or the sound is
distorted.
The sound effect cannot
be recorded.
The sound field parameters
and some other settings on
the unit cannot be changed.
The unit does not operate
properly.
“CHECK SP WIRES”
appears on the front
panel display.
There is noise interference
from digital or high-frequency
equipment, or this unit.
The unit suddenly turns
into standby mode.
Cause
The output level of the center speaker is
set to minimum.
“SOUND 1A CENTER” on the set menu
is set to NON.
One of the Hi-Fi DSP programs (1 to 4)
has been selected (except for 5ch Stereo).
The source encoded with a Dolby Digital
or DTS signal does not have a center
channel signal.
The output level of the rear speakers is set
to minimum.
A monaural source is being played with
program 9.
“SOUND 1D BASS” on the set menu is
set to MAIN when a Dolby Digital or
DTS signal is being played.
“SOUND 1D BASS” on the set menu is
set to SWFR or MAIN when a 2-channel
source is being played.
The source does not contain low bass
signals (90 Hz and below).
“SOUND 1D BASS” on the set menu is
set to SWFR or BOTH and your system
does not include a subwoofer.
The speaker mode settings (main, center
or rear) on the set menu does not match
your speaker configuration.
Incorrect cable connections.
The component connected to the OUT
(REC) jacks of this unit is turned off.
It is not possible to record the sound
effect with a recording component.
“OPTION 2 MEM. GUARD” in the set
menu 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.
The speaker cables are short circuited.
This unit is too close to the digital or
high-frequency equipment.
The internal temperature has become too
high and the overheat protection circuitry
has been activated.
Remedy
Raise the level of the center speaker.
Select the appropriate mode for your center
speaker.
Select another DSP program.
Raise the output level of the rear speakers.
Select another DSP program.
Select SWFR or BOTH.
Select BOTH.
Select MAIN.
Select the appropriate position for each speaker
based on the size of the speakers in your
configuration.
Firmly connect the audio plugs. If the problem
persists, the cables may be defective.
Turn on the power to the component.
Set “OPTION 2 MEM. GUARD” in the set
menu to OFF.
Disconnect the AC power cord from the 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 until the unit cools down and then turn it
back on.
Refer to
page
46
38
24 – 29
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46
24 – 29
39
39
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38 – 39
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TROUBLESHOOTING
0120V340R_50-58_EN(U)d.p65
03.4.2, 4:29 PM
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