@tim21354 for the LabelManager 160 do a complete reset.
Turn the printer off
important - REMOVE THE TAPE from the printer
Now press and hold "Backspace" button the "9" and the "On/Off" button at the same time
You may need to try this a couple of times due to the awkwardness of pushing those buttons or try the ERASE option by
REMOVE THE TAPE from the printer. then press "9" and "Backspace" simultaneously, THEN the Power button.
That should restore your font options.