1 Check to see if the printer is on.
2 Verify that all 3 cables are attached and secured (power to wall, cash drawer to printer, USB to computer).
3 Make sure the printer is set as default printer via the control panel.
4 Verify that the printer’s paper is not jammed or out of paper.
5 Verify that the printer’s lid is closed all the way.
6 If printer is working, but cash drawer is not opening, make sure the cash drawer is not locked with a key.
7 Download drivers again from the main page under “Settings.”