Yamaha DSP-Z9 Owner's Manual page 111

Problem
The sound suddenly The protection circuitry has been activated
goes off.
due to a short circuit, etc.
The sleep timer has turned the unit off.
The sound is muted.
The speaker on one The cable connections are incorrect.
side only can be
heard.
The balance settings are incorrect.
No sound from the The sound field programs are turned off.
effect speakers.
A Dolby Surround, Dolby Digital or DTS
decoding DSP program is being used with
material not encoded with Dolby
Surround, Dolby Digital or DTS.
A sampling digital signal of 96 kHz or
higher is being input to this unit.
No sound from the
The output level of the center speaker is
center speaker. set to minimum.
"Center" is set to None in Speaker Set.
One of the Hi-Fi DSP programs (except
for 9ch Stereo) has been selected.
No sound from the The output level of the surround speakers
surround speakers. is set to minimum.
"Surround" is set to None in Speaker Set.
A monaural source is being played with
STRAIGHT/EFFECT set to STRAIGHT.
No sound from the
"Surround" is set to None in Speaker Set.
surround back
speakers.
"Surround Back" is set to None in Speaker
Set.
No sound from the
"Bass Out" is set to Front in Subwoofer
subwoofer. Set when a Dolby Digital or DTS signal is
being played.
"Bass Out" is set to SWFR or Front in
Subwoofer Set when a 2-channel source is
being played.
The source does not contain low bass
signals.
Cause
Check that the correct impedance is set.
Check that the speaker wires are not touching each
other and then turn this unit back on.
Turn on the power, and playback the source again.
Press MUTE or any operation button on this unit to
cancel mute and adjust the volume.
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.
Select another sound field program.
Raise the level of the center speaker.
Select the appropriate mode for your center speaker.
Select another sound field program.
Raise the output level of the surround speakers.
Select the appropriate speaker mode for the surround
L/R speakers.
Press STRAIGHT/EFFECT to turn on the sound
fields. Then select another sound field program.
If the speaker mode for the surround L/R speakers is
set to None, the speaker mode for the surround back
speaker is automatically set to None. Select the
appropriate speaker mode for the surround L/R
speaker mode.
Select Large or Small.
Select SWFR or Both.
Select Both.
TROUBLESHOOTING
Remedy
Refer to
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