Yamaha RX-V420RDS Owner's Manual page 49

Problem
No sound from the effect
speakers.
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.
Cause
The sound effect is off.
A Dolby Surround, Dolby Digital or DTS
decoding DSP program is being used with
material not encoded with Dolby Surround,
Dolby Digital or DTS.
The output level of the center speaker is set to
minimum.
"CENTER SP" in the SET MENU is set to
NON.
One of the Hi-Fi DSP programs (1 to 4) has been
selected.
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 the
program 9.
"BASS OUT" in the SET MENU is set to
MAIN when a Dolby Digital or DTS signal is
being played.
"BASS OUT" in 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).
"BASS OUT" in the SET MENU is set to
SWFR or BOTH and your system does not
include a subwoofer.
The output mode for each speaker (main, center
or rear) in the SET MENU does not match your
speaker configuration.
Incorrect cable connections.
Remedy
Press EFFECT to turn it on.
Select another DSP program.
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 output mode 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.
TROUBLESHOOTING
Refer to
page
25
43, 44
40
36
43, 44
—
40
43, 44
37
37
—
37
36, 37
12 – 15
47