Samsung NP-R620E User Manual Vista/windows7 Ver.1.3 (English) - Page 21
Volume Control, Headphones and Speakers, Use Time Break Time, Illumination, Operation Condition
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Volume Control (Headphones and Speakers) Check your volume first to listen to music. Illumination ■ Do not use the computer in dark locations. The illumination level for computer use must be as bright so for reading a book. ■ Indirect illumination is recommended. Use a curtain to prevent reflection on the LCD screen. Check your volume!! ■ Check if the volume is too loud before using headphones. ■ It is not recommended using headphones for long periods of time. ■ Any deviation from the equalizer default setting could cause hearing impairment. ■ The default setting can be changed through software and driver updates without your intervention. Please check the equalizer default setting before first usage. Operation Condition ■ Do not use the computer in hot and humid locations. ■ Use the computer within the allowed temperature and humidity range specified in the User Guide. Use Time (Break Time) ■ Take a break for 10 minutes or more after a 50-minute period when working for more than one hour. 20