Try this, it can't hurt. Just in case the motherboard is ok....
Reset the new home janome
Use the plastic cover on a ball point pen…..plastic only.
Turn machine off, unplug foot.
Push all the 3 buttons by the needle at once and hold, while turning machine on..
An x will appear on the screen. Press x with plastic tip, keep pressing x until it disappears. A red light will come on , on the decorative stitch side. Press with plastic tip, x will again appear on screen. Keep pressing x again until it disappears. Shut machine off.
Do this three times and turn machine off, then on again. Machine is factory aligned again