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Cleaning and maintenance
Keep your computer and workspace clean. Shut down the computer and then
disconnect the power cord before cleaning the computer. Do not spray any liquid
detergent directly on the computer or use any detergent containing flammable material
to clean the computer. Spray the detergent on a soft cloth and then wipe the computer
surfaces.
Using headphones or earphones
If your computer has both a headphone connector and an audio-out connector, always
use the headphone connector for headphones (also called headsets) or earphones.
Excessive sound pressure from earphones and headphones can cause hearing loss.
Adjustment of the equalizer to maximum increases the earphone and headphone output
voltage and the sound pressure level. Therefore, to protect your hearing, adjust the
equalizer to an appropriate 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.
Plastic bag notice
DANGER:
Plastic bags can be dangerous. Keep plastic bags away from babies and children
to avoid danger of suffocation.
19


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Others manual(s) of Lenovo Ideacentre 520S

Lenovo Ideacentre 520S Quick start guide - English - 2 pages

Lenovo Ideacentre 520S User Manual - German - 71 pages

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Lenovo Ideacentre 520S User Manual - Dutch - 65 pages

Lenovo Ideacentre 520S Quick start guide - Dutch - 2 pages


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