User's Guide
Table Of Contents
- Chapter 1. Meet your Chromebook
- Chapter 2. Get started with your Chromebook
- Chapter 3. Navigate the screen
- Chapter 4. Use multimedia
- Chapter 5. Account, login, and logout
- Types of user account for logging into Chrome
- Become your Chromebook’s owner
- Sign in with a Google Account other than the owner’s
- Browse as a guest
- Create a supervised account
- Sign out
- Control who can use your Chromebook
- Check a Chromebook’s owner
- Disable guest login
- Lock your Chromebook
- Shut down your Chromebook
- Reset your Chromebook
- Get help from Google
- Chapter 6. Manage files and folders
- Chapter 7. Language settings
- Chapter 8. Add and manage apps
- Chapter 9. Lenovo help and support
- Appendix A. Important safety information
- Appendix B. Compliance information
- Appendix C. Accessibility, ergonomic, and maintenance information
- Trademarks
Extension cords and related devices
Ensure that extension cords, surge protectors, uninterruptible power supplies, and power strips that you use
are rated to handle the electrical requirements of the product. Never overload these devices. If power strips
are used, the load should not exceed the power strip input rating. Consult an electrician for more information
if you have questions about power loads, power requirements, and input ratings.
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 does 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.
Glass parts notice
CAUTION:
Some parts of your product may be made of glass. This glass could break if the product is dropped on
a hard surface or receives a substantial impact. If glass breaks, do not touch or attempt to remove it.
Stop using your product until the glass is replaced by trained service personnel.
Safety instructions for teachers, parents, and adult supervisors
This Chromebook computer is intended for use as a child development tool primarily by children, six 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 computer, battery pack, and ac power adapter.
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Lenovo Chromebook C340 and S340 User Guide