If your Lexmark inkjet or laser printer is printing erratically, printing incorrect colors or not functioning at all, you don't need to return the unit or find a service center for a repair immediately. There are a series of simple troubleshooting steps you can follow at home to fix the printer on your own 1. Check to make sure the printer's AC adapter is firmly plugged into a wall outlet and its USB cable is connected to the USB port on your computer. Try plugging the AC adapter into a different wall outlet, in case your outlet has stopped working or try a different USB cable in the event that it has gone bad. Pop open the top cover of the printer and check to see if any paper is jammed inside and needs to be physically removed. 2. Open the plastic cover over the ink cartridges or laser toner and pull them out. Check the orientation of the ink or toner. Replace them to make sure they are properly installed. Snap the plastic cover back into place. 3 . Read the informat