Lenovo 20JD, User Manual, Page: 30 / 150

– Operating: 5°C to 35°C (41°F to 95°F)
– Storage: 5°C to 43°C (41°F to 109°F)
• At altitudes above 2438 m (8000 ft)
– Maximum temperature when operating under the unpressurized condition: 31.3°C (88°F)
Note: When you charge the battery, its temperature must be at least 10°C (50°F).
Relative humidity
• Operating: 8% to 95% at wet-bulb temperature 23°C (73°F)
• Storage: 5% to 95% at wet-bulb temperature 27°C (81°F)
If possible, place your computer in a well-ventilated and dry area without direct exposure to sunshine.
Attention:
• Keep electrical appliances such as electric fans, radio, air conditioners, and microwave ovens away
from the computer. The strong magnetic fields generated by these appliances can damage the monitor
and data on the internal storage drive.
• Do not place any beverages on top of or beside the computer or other attached devices. If liquid is spilled
on or in the computer or an attached device, a short circuit or other damage might occur.
• Do not eat or smoke over your keyboard. Particles that fall into your keyboard can cause damage.
Lenovo programs
Your computer comes with Lenovo programs to help you work easily and securely.
Accessing Lenovo programs
To access Lenovo programs on your computer, do the following:
1. Open the Start menu and locate a program by the program name.
2. If you do not find the program in the program list, search for the program in the search box.
An introduction to Lenovo programs
This topic provides a brief introduction to Lenovo programs. Depending on your computer model, some of
the programs might not be available.
The available programs are subject to change without notice. To learn more about the programs and other
computing solutions offered by Lenovo, go to:
http://www.lenovo.com/support
Lenovo Companion Your computer’s best features and capabilities should be easy to access and
understand. With Lenovo Companion, they are.
Use Lenovo Companion to do the following:
• Optimize your computer performance, monitor your computer health, and
manage updates.
• Access your user guide, check warranty status, and view accessories
customized for your computer.
• Read how-to articles, explore Lenovo forums, and stay up-to-date on
technology news with articles and blogs from trusted sources.
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User Guide