When we buy new device such as Optimus SCP-91 we often through away most of the documentation but the warranty.
Very often issues with Optimus SCP-91 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 Cassette Player Optimus SCP-91 is responsible for and what options to choose for expected result.
Fortunately you can find all manuals for Cassette Player on our side using links below.