Hello. My name is Michael. I will be helping you with your question today.
Part of the model number of what you are trying to fix has been cut off. Can you please re-enter the model number so that I can provide you with more specific assistance? If it is a Roland KR-75, then the following reset procedure is correct:
Press UTILITY and use the PAGE <> buttons to select “Factory Preset.” Press EXECUTE, then press OK
If, not, please let me now more detail and we can go from there.