Samsung NP600B4C User Manual Windows 7 User Manual Ver.1.3 (English) - Page 85
LCD bad pixels principle of computer, Instructions for Cleaning the LCD
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LCD Brightness Control •• LCD bad pixels principle of computer Samsung observes the specifications regarding strict quality and reliability of LCD. But in spite of that, it is inevitable that there might be a small number of bad pixels. A large number of bad pixels can cause problems in appearance, but a small number of pixels doesn't affect the computer performance. Therefore Samsung observes and manages the following dot principles: - Bright dot : 2 or less - Black dot : 4 or less - Combination of Bright and Dark : 4 or less Instructions for Cleaning the LCD Clean the LCD panel with a soft cloth lightly moistened with computer cleansing detergent moving in one direction. Cleaning the LCD panel with excessive force can damage the LCD. Chapter 3. Settings and Upgrade 84