When we buy new device such as Yamaha IF2115M/99(W) we often through away most of the documentation but the warranty.
Very often issues with Yamaha IF2115M/99(W) begin only after the warranty period ends and you may want to find how to repair it or just do some service work.
Even oftener it is hard to remember what does each function in Portable Speaker Yamaha IF2115M/99(W) is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for Portable Speaker on our side using links below.