Yamaha NS-P220 Owner's Manual - Page 17

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 No sound. Sound level is too low. Cause Speaker cords are not connected securely. Speaker cords are not connected correctly. What to Do Connect them securely. Connect them correctly, that is L (left) to L, R (right) to R, "+" to "+" and "-" to "-". For SW-P201 Problem Power is not supplied even though the POWER switch is set to the ON position. No sound. Sound level is too low. The subwoofer will not turn on automatically. The subwoofer turns into the standby mode unexpectedly. The subwoofer turns on unexpectedly. Cause The power plug is not securely connected. What to Do Connect it securely. The VOLUME control is set to 0. Speaker cords are not connected securely. Speaker cords are not connected correctly. A source sound with few bass frequencies is played. It is influenced by standing waves. The POWER switch is set to the OFF position. The AUTO STANDBY switch is set to the OFF position. The level of input signal is too low. The level of input signal is too low. There is an influence of noise generated from external appliances etc. Turn the VOLUME control to the right. Connect them securely. Connect them correctly, that is L (left) to L, R (right) to R, "+" to "+" and "-" to "-". Play a source sound with bass frequencies. Reposition the subwoofer or break up the parallel surface by placing bookshelves etc. along the walls. Set the POWER switch to the ON position. Set the AUTO STANDBY switch to the "HIGH" or "LOW" position. Set the AUTO STANDBY switch to the "HIGH" position. Set the AUTO STANDBY switch to the "HIGH" position. Move the subwoofer farther away from such appliances and/or reposition the connected speaker cables. Otherwise, set the AUTO STANDBY switch to the "OFF" position. 13