Sony SA-W301 Operating Instructions Manual page 4

Basic Operations
xe) If the woofer does not exit
the stand-by mode when
the signal is input again
(SA-W301 only)
It might be due to the
amplifier connected. In this
case, press AUTO to turn off
the AUTO indicator.
GEN
1 Turn on the amplifier and select the program source.
2 Press POWER.
The woofer turns on and the POWER indicator lights up in green.
3 Play the program source.
To turn off the power
Press POWER to release the switch.
To use the AUTO switch (SA-W301 only)