Yamaha HTR-5940 AV ユーザーズマニュアル

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Refer to the chart below when this unit does not function properly. If the problem you are experiencing is not listed below 
or if the instructions given below do not help, disconnect the power cord and contact your authorized YAMAHA dealer 
or service center.
TROUBLESHOOTING
Problem
Cause
What to Do
Power is not supplied even though the 
POWER
 switch is set to the 
ON
 
position.
The power plug is not securely 
connected. 
Connect it securely.
No sound.
The volume is set to minimum.
Raise the volume up.
Speaker cables are not connected 
securely.
Connect them securely.
Sound level is too low.
Speaker cables are not connected 
correctly.
Connect them correctly, that is L (left) to 
L, R (right) to R, “+” to “+” and 
” to “
”.
A source sound with few bass 
frequencies is played.
Play a source sound with bass 
frequencies.
Set the 
HIGH CUT
 switch to the 
HIGH
 
position.
It is influenced by standing waves.
Reposition the subwoofer or break up 
the parallel surface by placing 
bookshelves etc. along the walls.