Display message again and again and again turn power on all connectors are .Roland VersaCAMM VS-640i

Display message again and again and again turn power on all connectors are okvid... Roland VersaCAMM VS-640i https://mans.io/question/view/57389-display-message-again-and-again-and-again-turn-power-on-all-connectors-are-okvid_20230707_222444-mp4