What should I do if my HP LaserJet M1005 MFP is causing interference with radio or television reception?

You can correct the interference by reorienting or relocating the receiving antenna, increasing the separation between the equipment and receiver, connecting the equipment to an outlet on a different circuit from the receiver, or consulting your dealer or an experienced radio/TV technician. You can determine if the printer is causing interference by turning the equipment off and on. (Page 2)