MusicalMe

Hello. I 😍 my LK280. But I do have one small issue - I cannot disable the Power-On Alert (when the keyboard lights begin to flash after 9 minutes on standby when powered from the mains). I have followed the instructions on Page E10: FUNCTION/ < > to OTHER/Key9 ("Enter"). This gives a message on the screen - "ArpegHLd" with "Off" in the top-left corner, whatever that means. Anyway, the lights still flash at 9 minutes. Am I doing something wrong?