A printer includes a printing portion, a display, and a processor. The printing portion includes a plurality of heating elements arrayed in a specified direction. The printing portion is configured to perform printing on a print medium. The display is configured to display an image. The processor is configured to cause the display to display a first image, the first image being an image that shows the plurality of heating elements, receive specification of a check range, the check range being a range that includes a heating element to be checked among the plurality of heating elements, check, in a case where the specification of the check range is received, a state of the heating element included in the check range, and cause the display to display a check result of the state of the heating element.