When the printer unit is moved by touch panel operations, if the height sensor detects an object or something similar, a warning beep will sound, and the operation of the printer unit will stop. Check the transporter table and remove any objects or similar items that are there. Alternatively, raise the printer unit to a point where the height sensor does not detect these items.
MEMOPress [TS : RESET] on the touch panel to stop the warning beep.