Liquid Crystal Display (Lcd) Notice; Using Headphones Or Earphones - Lenovo ThinkPad Warranty Manual

DANGER
Laser radiation when open. Do not stare into the beam, do not view directly with
optical instruments, and avoid direct exposure to the beam.

Liquid crystal display (LCD) notice

CAUTION: For products with mercury-containing fluorescent lamps
(i.e., non-LED)
The fluorescent lamp in the liquid crystal display
contains mercury; dispose according to local, state, or
federal laws.
The LCD is made of glass, and rough handling or dropping the computer can
cause the LCD to break. If the LCD breaks and the internal fluid gets into your
eyes or on your hands, immediately 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

If your computer has both a headphone connector and an audio-out
connector, always use the headphone connector for headphones (also called a
headset) or earphones.
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
Chapter 1. Important safety information
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