58 Dynex 40" LED TVDX-40D510NA15www.dynexproducts.com5 Press X to move to the channel label field.6 Press S or T to select a character, then press W or Xto move to the previous or next position. Repeat thisstep to add more characters. You can enter as manyas 11 characters. If you need to delete a character,enter a blank space, then press ENTER.7 When you have completed the label, press ENTER.8 Press EXIT to close the menu.Checking the digital signal strengthYou can check the digital signal strength to determine ifyou need to adjust your antenna or digital cable input.The higher the signal strength, the less likely you are toexperience picture degradation.1 Press MENU. The on-screen menu opens.2 Press W or X to highlight Channels, then press T orENTER. The Channels menu opens.3 Press S or T to highlight Channel Strength, thenpress ENTER. The DTV signal strength is indicated bythe color bar.4 Press MENU to return to the previous menu, or pressEXIT to close the menu.Maintaining• Do not use your TV in areas that are too hot or toocold, because the cabinet may warp or the screen maymalfunction. Your TV works best in temperatures thatare comfortable to you.• Storage temperatures are 32° to 122°F (0° to 50°C).• Working temperatures are 41° to 104°F (5° to 40°C).• Do not place your TV in direct sunlight or near a heatsource.Cleaning your TV• Before cleaning the screen, unplug your TV from thepower outlet.• Clean your TV with a soft, lint-free cloth. If surfaces areextremely dirty, use a soft cloth dampened with aweak detergent solution.• Use an eyeglass cleaner to clean the screen. Never usealcohol, paint thinner, or benzine.• Before using a chemically treated cloth, read theinstructions that came with the cloth.• Do not spray insecticide liquid near your TV. Suchchemicals may cause damage and discoloration to theexposed surfaces.