23 OperationMaintenanceDo not use benzene, thinner, or rubbing alcohol. Doing so may adversely affect the sur-face, e.g., discoloration. In addition, do not use commercially-available household clean-ers and cosmetics, as they may contain components harmful to the surface.Do not directly add or spray water or detergent. If liquid enters the inside of the com-puter, it may cause it to work improperly or be damaged.Display (LCD)Use the Soft Cloth included with the computer. (For more information, refer to “SuggestionsAbout Cleaning the LCD Surface” that come with the Soft Cloth.)If the Protective Film becomes damaged, it may be time to replace your Protective Film. TheProtective Film is a disposable item. To find out the model number of your Protective Film,contact Panasonic Technical Support. (For more information, refer to the “Operating Instruc-tions” that come with the Protective Film.)Avoid using water when cleaning the panel. Ingredients included in water may leave scratchesand reduce readability of the screen.Avoid rubbing off dust/dirt with cloth since it may leave scratch on the screen.Sweep dust/dirt with fine brush, then wipe it with a dry soft cloth used for cleaning glasses.Apply camera lens cleaner on a soft gauze and clean it with gentle force. Then, wipe with a drysoft cloth used for cleaning glasses.CAUTIONAreas excluding the displayWipe these areas with a soft cloth, after applying water or detergent diluted with water to thesoft cloth and firmly wringing out excess water.Do not touch or use a touchscreen before you re-attach a Protective Film, as you mayleave a mark or a scratch on the touchscreen.CAUTIONSecurity Center/Antivirus ProtectionUse the Windows Security Center function to protect Windows from damage by computerviruses, etc.Windows Security CenterWhat is Windows Security Center?The Windows Security Center allows centralized management of Windows security infor-mation, and monitors antivirus measures and other Windows security settings to ensureoptimum safety.Use the Windows Security Center function to protect your computer from damage by vi-ruses, etc.Select [start] - [Control Panel] - [Security Center] to display the current settings for thefollowing security functions.• Windows FirewallA security system for protecting the computer from unauthorized access via the Internetor other external networks.The firewall regulates the data exchanged between the computer and the external net-work, so that only approved data can pass through.At the time of purchase, the Windows Firewall is set to be enabled.