[. . . ] From the main menu, select the desired language with your remote control or highlight the language option on your computer screen. [. . . ] â· Cleaning process The micro-fiber 12 brush system is designed to remove dust, debris and dirt from the laser lens which causes skipping or reading problems of the DVD or blu ray discs. â· Audio system check It determines whether your speakers are connected properly. â· Audio frequency response check It determines whether your speakers perform at the proper sound levels. This product is only compatible with the DVD, bluray drives and Blu-ray players. Insert SVC2546W/10 into the DVD-ROM drive, blu-ray drive, DVD player, or blu-ray player. Hold the DVD cleaning disc by the edges and try not to touch or bend the brushes on the underside of the disc. [. . . ] Hold the DVD cleaning disc by the edges and try not to touch or bend the brushes on the underside of the disc. [. . . ]