Resetting Suzuki SP-47 61-Key Portable Keyboard

Warning! This operation returns all settings you’ve made in the menus to their factory-set condition. Do not use this function unless you are certain that you want to do this.

Factory Reset:

To restoring Suzuki SP-47 to it’s factory settings, just simply power ON while simultaneously holding the [– LEVEL ] and [+ LEVEL] buttons.

 Hopefully the article of Resetting Suzuki SP-47 61-Key Portable Keyboard can help you.

Reference: Suzuki SP-47 manual