Lenovo 8991 Laptop User Manual


 
The following notice applies to all countries and regions:
Danger
Outdoor antenna grounding
If an outside antenna or cable system is connected to the
equipment, be sure the antenna or cable system is grounded as to
provide some protection against voltage surges and built-up static
charges.
Lightning
For added protection for this equipment during a lightning storm,
or when it is left unattended and unused for long periods of time,
unplug it from the wall outlet and disconnect the antenna or cable
system. This will prevent damage to the video product due to
lightning and power line surges.
Power lines
An outside antenna system should not be located in the vicinity of
overhead power lines or where it can fall into such power lines or
circuits. When installing an outside antenna system, extreme care
should be taken to keep from touching such power lines or circuits,
as contact with them may be fatal.
Data safety
Do not delete unknown files or change the name of files or directories that were
not created by you; otherwise, your computer software might fail to work.
Be aware that accessing network resources can leave your computer vulnerable to
computer viruses, hackers, spyware, and other malicious activities that might
damage your computer, software, or data. It is your responsibility to ensure that
you have adequate protection in the form of firewalls, antivirus software, and
anti-spyware software and keep this software up to date.
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 a headset) or
earphones.
Excessive use of headphones or earphones for a long period of time at high
volume can be dangerous if the headphones or earphones do not comply with
specifications of EN 50332-2. The headphone output connector of your computer
Important safety information xv