Hey There, I am Sofia Carter. The printer's control panel has buttons and icons for controlling the printer, as well as a display for choosing print options. The significance of the 'HP printer symbols meaning' varies based on the type of hp printer you possess. An explanation of some of the most popular control panel controls and lights on an HP printer can be found below. This button is used to switch on or off the printer's electricity. When there is a paper jam in the printer, this light will glow.