Lenovo N21 Chromebook User Manual page 15

wash the affected areas with water for at least 15 minutes; if any symptoms are present after
washing, get medical care.
Using headphones or earphones
CAUTION:
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 headphone 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
DANGER
Plastic bags can be dangerous. Keep plastic bags away from babies and children to avoid danger
of suffocation.
Teachers, Parents and Adult Supervisors in Safety Instructions
This Chromebook is intended for use as a child development tool primarily by children, 6 years of age or
above. There must be supervision by an adult. It is a must to have a thorough explanation to children on safe
and proper handling of the N21 chromebook, power supply, battery pack, and power cord.
Warning: Chocking Hazard — Small parts. Not suitable for children under age 3.
• For ITE with power supplies not intended to be handled by children: As with all electrical products,
precautions should be observed handling and use to prevent electric shock. The power supply (adapter)
should not be handled by the children.
• The N21 chromebook should not be placed on the bare skin (lap) of the child for long periods,. The laptop
should be placed on another surface, like desk tabletop, if intending to use it for more than a few minutes.
• The N21 chromebook (including power supply and battery pack, as applicable) should not be left in the
rain or subjected to exposure to water. If cleaning is necessary do not immerse in water; wipe clean
with damp cloth.
• The N21 chromebook (including power supply and battery pack, as applicable) should not be dropped,
crushed (stepped on) or otherwise abused.
• The children should be careful with the interconnect cable (wiring) between the power supply (adapter)
and N21 chromebook, in particular as a potential trip hazard.
• An adult should inspect the N21 chromebook (including power supply and battery pack, as applicable)
periodically for damage, and replace if necessary. Similarly, if a child notices damaged/broken parts,
this should be reported to the teacher/parents/adult supervisors immediately so that the damaged parts
can be replaced.
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