Yamaha DSP-AX757SE Owner's Manual page 89

Problem
The sound suddenly
The protection circuitry has been activated
goes off.
because of a short circuit, etc.
The sleep timer has turned the unit off.
The sound is muted.
Only the speaker on Incorrect cable connections.
one side can be
heard.
Incorrect balance settings in SET MENU.
Only the center
When playing a monaural source with a
speaker outputs
CINEMA DSP program, the source signal
substantial sound. is directed to the center channel, and the
front and surround speakers output effect
sounds.
No sound from the
The sound field programs are turned off.
effect speakers.
You are using a source or program
combination that does not output sound
from all channels.
No sound from the The output level of the center speaker is
center speaker.
set to minimum.
"CENTER SP" in SET MENU is set to
NONE.
One of the HiFi DSP programs (except for
7ch Stereo) has been selected.
No sound from the The output level of the surround speakers
surround speakers.
is set to minimum.
"SUR. L/R SP" in SET MENU is set to
NONE.
A monaural source is being played with
STRAIGHT.
No sound from the
Presence speakers are selected.
surround back
"SUR. L/R SP" in SET MENU is set to
speakers.
NONE.
"SUR. B L/R SP" in SET MENU is set to
NONE.
No sound from the "LFE/BASS OUT" in SET MENU is set
subwoofer.
to FRNT when a Dolby Digital or DTS
signal is being played.
"LFE/BASS OUT" in SET MENU is set
to SWFR or FRNT when a 2-channel
source is being played.
The source does not contain low bass
signals.
Cause
Check that the impedance selector setting is correct.
Check that the speaker wires are not touching each
other and then turn this unit back on.
Turn on the power, and play the source again.
Press MUTE to cancel a mute.
Connect the cables properly. If the problem persists,
the cables may be defective.
Adjust the SPEAKER LEVEL settings.
Press STRAIGHT (EFFECT) to turn them on.
Try another sound field program.
Raise the level of the center speaker.
Select the appropriate setting for the center speaker.
Try another sound field program.
Raise the output level of the surround speakers.
Select the appropriate setting for the surround left and
right speakers.
Press STRAIGHT (EFFECT) to turn on the sound
fields.
Select surround back speakers in SUR. B L/R SP.
If the surround left and right speakers are set to
NONE, the surround back speaker setting is
automatically set to NONE. Select the appropriate
setting for the surround speakers.
Select LRGx1 or SMLx1.
Select SWFR or BOTH.
Select BOTH.
TROUBLESHOOTING
Remedy
Refer to
page
67
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