Yamaha YSTSW216BL Owners Manual - Page 16
Troubleshooting, Power, High Cut
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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 Power is not supplied even though the POWER switch is set to the ON position. No sound. Sound level is too low. Cause The power plug is not securely connected. The volume is set to minimum. Speaker cables are not connected securely. Speaker cables are not connected correctly. A source sound with few bass frequencies is played. It is influenced by standing waves. What to Do Connect it securely. Raise the volume up. 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. Set the HIGH CUT switch to the HIGH position. Reposition the subwoofer or break up the parallel surface by placing bookshelves etc. along the walls. 12