Try switching from 'Auto' to 'Manual' (or vice versa) to see if that makes any difference. Also try switching 'Mic Sense' from 'Low' to 'High'.
Remember that the LS-10 is designed as a voice recorder, and should therefore only be expected to pick up sounds close to the microphones in its 'bare' state. It's also popular with wildlife enthusiasts, for recording the sounds of nature (such as birdsong) but only when used with an external microphone. You shouldn't expect it produce decent quality wildlife recordings (or similar) just using the built-in microphones.