Hey There, I am Sofia Carter. The printer's control panel includes buttons and icons for operating the printer, as well as a control panel display for selecting print choices. The ‘HP printer symbols meaning’ can vary depending on the model of hp printer you own. Below is a description of some of the common control panel buttons and lights on a hp printer. Power button: This button turns on or off the power to the printer. Paper jam light: This light illuminates when there is a paper jam in the printer. Print quality light: This light illuminates when the quality of the printed document is poor.