When do I run a cleaning cycle and how do I do that?

Cleaning cycles should be run using regular 8.5″x 11″ copy paper if smudging or random flecks of toner appear on printed sheets and if any different media is used that fails to print correctly. On the printer control panel go to Print Information -> Demo Page -> Cleaning Page -> Execute. Repeat until all sheets in the cleaning cycle come out clean on both sides.