Yamaha YST-SW225 TROUBLESHOOTING

TROUBLESHOOTING

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.

Problem	Cause	What to Do
Power is not supplied even though the	The power plug is not securely	Connect it securely.
STANDBY/ON button is set to the ON	connected.
position.
	The POWER switch is set to the OFF	Set the POWER switch to the ON
	position.	position.
No sound.	The volume is set to minimum.	Raise the volume up.
	Speaker cables are not connected	Connect them securely.
	securely.
Sound level is too low.	Speaker cables are not connected	Connect them correctly, that is L (left) to
	correctly.	L, R (right) to R, “+” to “+” and
		“–” to “–”.
	Setting of the PHASE switch is not	Set the PHASE switch to the other
	proper.	position.
	A source sound with few bass	Play a source sound with bass
	frequencies is played.	frequencies.
		Set the HIGH CUT control to a higher
		position.
	It is influenced by standing waves.	Reposition the subwoofer or break up
		the parallel surface by placing
		bookshelves etc. along the walls.
The subwoofer does not turn on	The POWER switch is set to the OFF	Set the POWER switch to the ON
automatically.	position.	position.
	The STANDBY/ON button is set to the	Set the STANDBY/ON button to the ON
	STANDBY position.	position.
	The AUTO STANDBY switch is set to	Set the AUTO STANDBY switch to the
	the OFF position.	“HIGH” or “LOW” position.
	The level of input signal is too low.	Set the AUTO STANDBY switch to the
		“HIGH” position.
The subwoofer does not turn into the	There is an influence of noise generated	Move the subwoofer farther away from
standby mode automatically.	from external appliances etc.	such appliances and/or reposition the
		connected speaker cables.
		Otherwise, set the AUTO STANDBY
		switch to the “OFF” position.
	The AUTO STANDBY switch is set to	Set the AUTO STANDBY switch to the
	the OFF position.	“HIGH” or “LOW” position.
The subwoofer turns into the standby	The level of input signal is too low.	Set the AUTO STANDBY switch to the
mode unexpectedly.		“HIGH” position.
The subwoofer turns on unexpectedly.	There is an influence of noise generated	Move the subwoofer farther away from
	from external appliances etc.	such appliances and/or reposition the
		connected speaker cables.
		Otherwise, set the AUTO STANDBY
		switch to the “OFF” position.

15