Owner's Manual
Page 14
...the problem you resolve the problem, disconnect the power cord and contact your authorized YAMAHA dealer or service center. No sound. Cause What to Do The power plug is not listed, ...or if the instructions fail to help you are playing a sound source that Play a sound source that includes includes inadequate bass ...) to L, R (right) to R, "+" to "+" and "-" to the right (clockwise). For the Subwoofer (SW-P270) only Problem Power is not supplied even though the POWER switch is set to the ON position. Turn the power switch OFF...
...the problem you resolve the problem, disconnect the power cord and contact your authorized YAMAHA dealer or service center. No sound. Cause What to Do The power plug is not listed, ...or if the instructions fail to help you are playing a sound source that Play a sound source that includes includes inadequate bass ...) to L, R (right) to R, "+" to "+" and "-" to the right (clockwise). For the Subwoofer (SW-P270) only Problem Power is not supplied even though the POWER switch is set to the ON position. Turn the power switch OFF...