Lenovo K100 K100 Safety and Warranty Guide - Page 15

Excessive sound pressure from earphones and headphones can cause hearing loss. Adjustment of the equalizer to maximum increases the earphones and headphones output voltage and therefore the sound pressure level. Excessive use of headphones or earphones for a long period of time at high volume can be dangerous if the output of the headphones or earphone connectors do not comply with specifications of EN 50332-2. The headphone output connector of your computer complies with EN 50332-2 Sub clause 7. This specification limits the computer's maximum wide band true RMS output voltage to 150 mV. To help protect against hearing loss, ensure that the headphones or earphones you use also comply with EN 50332-2 (Clause 7 limits) for a wide band characteristic voltage of 75 mV. Using headphones that do not comply with EN 50332-2 can be dangerous due to excessive sound pressure levels. If your Lenovo computer came with headphones or earphones in the package, as a set, the combination of the headphones or earphones and the computer already complies with the specifications of EN 50332-1. If different headphones or earphones are used, ensure that they comply with EN 50332-1. (Clause 6.5 Limitation Values). Using headphones that do not comply with EN 50332-1 can be dangerous due to excessive sound pressure levels. Additional safety information Plastic bags can be dangerous. Keep plastic bags away from babies and children to avoid danger of suffocation. Your Additional Responsibilities Selection of Operation Environment Select a dry and clean workplace with sufficient sunlight and excellent ventilation, and provide the computer equipment with the power socket with fine grounded cable to meet your requirement. 31031415 Greenland SWG_EN.indd 13 Safety and warranty guide 13 2007.8.20 4:07:42 PM