Yamaha RX-V750 Owner's Manual page 85

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 the 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.
A Dolby Surround, Dolby Digital or DTS
decoding DSP program is being used with
material not encoded with Dolby
Surround, Dolby Digital or DTS.
No sound from the The output level of the center speaker is
center speaker. set to minimum.
"CENTER" in the SET MENU is set to
NONE.
One of the Hi-Fi 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.
"SURR.LR" in the SET MENU is set to
NONE.
A monaural source is being played with
STRAIGHT (EFFECT) set to
STRAIGHT.
No sound from the Presence speakers are selected.
surround back
"SURR.B" in the SET MENU is set to
speakers.
NONE.
"SURR B L/R SP" in the SET MENU is
set to NONE.
No sound from the "BASS OUT" in the SET MENU is set to
subwoofer. FRONT when a Dolby Digital or DTS
signal is being played.
"BASS OUT" in the SET MENU is set to
SWFR or FRONT 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 SP 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.
Select surround back speakers in PR/SB SELECT.
If the speaker mode for the surround left and right
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 LRG or SML.
Select SWFR or BOTH.
Select BOTH.
TROUBLESHOOTING
Remedy
Refer to
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