Table of Contents
- About this documentation
- Chapter 1. Meet your computer
- Chapter 2. Get started with your computer
- Chapter 3. Explore your computer
- Chapter 4. Secure your computer and information
- Chapter 5. Configure advanced settings
- Chapter 6. Help and support
- Appendix A. Important safety information
- Appendix B. Accessibility and ergonomic information
- Appendix C. Compliance information
- Appendix D. Notices and trademarks
Lenovo 340-14IML User Manual
Displayed below is the user manual for 340-14IML by Lenovo which is a product in the Notebooks category. This manual has pages.
Related Manuals
Lenovo IdeaPad C340 Series
User Guide
Read this first
Before using this documentation and the product it supports, ensure that you read and understand the
following:
• Appendix A “Important safety information” on page 35
• Safety and Warranty Guide
• Setup Guide
First Edition (August 2019)
© Copyright Lenovo 2019.
LIMITED AND RESTRICTED RIGHTS NOTICE: If data or software is delivered pursuant to a General Services
Administration “GSA” contract, use, reproduction, or disclosure is subject to restrictions set forth in Contract No. GS-
35F-05925.
Contents
About this documentation . . . . . . . . iii
Chapter 1. Meet your computer. . . . . 1
Front . . . . . . . . . . . . . . . . . . . . 1
Base . . . . . . . . . . . . . . . . . . . . 2
Left . . . . . . . . . . . . . . . . . . . . 3
Right . . . . . . . . . . . . . . . . . . . . 4
Features and specifications . . . . . . . . . . . 5
Statement on USB transfer rate . . . . . . . . 6
Chapter 2. Get started with your
computer . . . . . . . . . . . . . . . . . 7
Get started with Windows 10 . . . . . . . . . . 7
Windows account . . . . . . . . . . . . . 7
Windows user interface . . . . . . . . . . . 8
Windows label . . . . . . . . . . . . . . 9
Connect to networks . . . . . . . . . . . . . . 9
Use Lenovo Vantage . . . . . . . . . . . . . 10
Interact with your computer . . . . . . . . . . 11
Hotkeys . . . . . . . . . . . . . . . . 11
Use the multi-touch screen . . . . . . . . 12
Use multimedia . . . . . . . . . . . . . . . 14
Use audio . . . . . . . . . . . . . . . 14
Use the camera . . . . . . . . . . . . . 14
Connect to an external display . . . . . . . 15
Operating modes . . . . . . . . . . . . . . 17
Lenovo Digital Pen. . . . . . . . . . . . . . 18
Chapter 3. Explore your computer . . 19
Manage power . . . . . . . . . . . . . . . 19
Check the battery status . . . . . . . . . 19
Charge the battery . . . . . . . . . . . . 19
Check the battery temperature . . . . . . . 19
Maximize the battery life . . . . . . . . . 19
Set power button behaviors . . . . . . . . 19
Set the power plan . . . . . . . . . . . . 20
Transfer data . . . . . . . . . . . . . . . . 20
Connect a Bluetooth-enabled device. . . . . 20
Use a media card . . . . . . . . . . . . 20
Airplane mode . . . . . . . . . . . . . . . 21
Chapter 4. Secure your computer
and information . . . . . . . . . . . . 23
Use passwords . . . . . . . . . . . . . . . 23
Password types . . . . . . . . . . . . . 23
Set administrator password . . . . . . . . 23
Change or remove administrator password . . 23
Set user password . . . . . . . . . . . . 24
Enable power-on password . . . . . . . . 24
Set hard disk password . . . . . . . . . . 24
Change or remove hard disk password . . . . 25
Use the fingerprint reader . . . . . . . . . . . 25
Use firewalls and antivirus programs. . . . . . . 25
Chapter 5. Configure advanced
settings. . . . . . . . . . . . . . . . . 27
UEFI/BIOS . . . . . . . . . . . . . . . . . 27
What is UEFI/BIOS setup utility . . . . . . . 27
Start the UEFI/BIOS setup utility . . . . . . 27
Navigate in the UEFI/BIOS interface . . . . . 27
Change the startup sequence . . . . . . . 27
Set the system date and time. . . . . . . . 28
Enable/Disable hotkey mode . . . . . . . . 28
Enable/Disable always-on . . . . . . . . . 28
Update UEFI/BIOS . . . . . . . . . . . . 28
Recovery information . . . . . . . . . . . . 28
Reset your computer . . . . . . . . . . . 28
Use advanced options . . . . . . . . . . 29
Windows automatic recovery. . . . . . . . 29
Create and use a recovery USB device . . . . 29
Chapter 6. Help and support . . . . . 31
Frequently asked questions . . . . . . . . . . 31
Self-help resources . . . . . . . . . . . . . 32
Call Lenovo . . . . . . . . . . . . . . . . 33
Before you contact Lenovo . . . . . . . . 33
Lenovo Customer Support Center . . . . . . 33
Purchase additional services. . . . . . . . . . 34
Appendix A. Important safety
information . . . . . . . . . . . . . . . 35
Appendix B. Accessibility and
ergonomic information . . . . . . . . 49
Appendix C. Compliance
information . . . . . . . . . . . . . . . 53
Appendix D. Notices and
trademarks . . . . . . . . . . . . . . . 65
© Copyright Lenovo 2019 i
ii Lenovo IdeaPad C340 Series User Guide
About this documentation
• Illustrations in this documentation might look different from your product.
• This documentation applies to models listed in the following table. Depending on the model, some
optional accessories, features, and software programs might not be available on your computer.
• Depending on the version of operating systems, some user interface instructions might not be applicable
to your computer.
• Documentation content is subject to change without notice. Lenovo makes constant improvements on the
documentation of your computer, including this User Guide. To get the latest documentation, go to https://
support.lenovo.com.
• Microsoft® makes periodic feature changes to the Windows® operating system through Windows Update.
As a result, some information in this documentation might become outdated. Refer to Microsoft resources
for the latest information.
Model name MT
Lenovo IdeaPad C340-14IML 81TK, 81XN (for Brazil)
Lenovo IdeaPad C340-15IML 81TL
Lenovo IdeaPad C340-15IIL 81XJ
© Copyright Lenovo 2019 iii
iv Lenovo IdeaPad C340 Series User Guide
Chapter 1. Meet your computer
Front
1 14
5
6
2
3
1. Microphones Capture or record sound and voice.
2. Camera
Take pictures or record videos by clicking Camera from the Start menu.
If you use other apps that support photographing, video chatting, and video
conference, the camera starts automatically when you enable the camera-
required feature from the app.
3. Shutter Slide the shutter to cover or uncover the camera lens. It is designed to protect
your privacy.
4. Camera light If the light is on, the camera is in use.
5. Multi-touch screen Displays text, graphics, and videos. See “Use the multi-touch screen” on page 12.
6. Wireless LAN/Bluetooth
antennas
Send and receive radio waves for the wireless LAN/Bluetooth module.
Note: The antennas are not visible from the outside of the computer.
© Copyright Lenovo 2019 1
Left
1 32 4 5 6
1. Power connector Connect to ac power through an ac power adapter.
2. Battery/Charging status
indicator
This indicator shows whether the computer is connected to ac power.
• Solid white: Connected to ac power (battery power 91%–100%)
• Solid amber: Connected to ac power (battery power 1%–90%)
• Off: Not connected to ac power
3. HDMI™ connector Connect to a compatible digital audio device or video monitor, such as an HDTV.
4. USB-C™ connector
• Charges USB-C compatible devices with the output voltage and current of 5 V
and 3 A.
• Transfers data at USB 3.1 speed, up to 5 Gbps.
• Connects to USB-C accessories to expand computer functionality. To
purchase USB-C accessories, go to https://www.lenovo.com/accessories
Note: When the battery power is below 10%, the connected USB-C
accessories might not work correctly.
5. Audio connector
Connect headphones or a headset with a 3.5-mm (0.14-inch) and 4-pole plug to
listen to the sound from the computer.
Note: The audio connector does not support conventional microphones.
6. Speaker Produces sound.
Chapter 1.Meet your computer 3
Right
21 3 4 5 6
1. Speaker Produces sound.
2. Novo button When the computer is off, press this button to start the System Recovery or the
BIOS setup utility, or to enter the boot menu.
3. Power button
Press to turn on the computer or put the computer to sleep mode.
To turn off the computer, open the Start menu, click Power, and then select
Shut down.
The indicator in the power button shows the system status of your computer.
• Solid white/Solid amber: The computer is on.
• Off: The computer is off or in hibernation mode.
• Blinking slowly: The computer is in sleep mode.
4. Media-card slot Insert a flash media card for data access or storage. See “Use a media card” on
page 20.
5. USB 3.1 connector Gen 1 Connect a USB-compatible device, such as a USB keyboard, USB mouse, USB
storage device, or USB printer.
6. Always On USB 3.1 connector
Gen 1
To charge the USB-compatible devices when your computer is off, in sleep mode,
or in hibernation mode, enable the Always On USB feature on your computer. See
“Enable/Disable always-on” on page 28.
4Lenovo IdeaPad C340 Series User Guide
Features and specifications
Dimensions
• Lenovo IdeaPad C340-14IML:
– Length: 328 mm (12.9 inches)
– Width: 229 mm (9.0 inches)
– Thickness: 17.9 mm (0.7 inches)
• Lenovo IdeaPad C340-15IML/Lenovo IdeaPad C340-15IIL:
– Length: 364 mm (14.3 inches)
– Width: 250 mm (9.8 inches)
– Thickness: 20.5 mm (0.8 inches)
Power source(ac power adapter) • Sine-wave input at 50 Hz to 60 Hz
• Input rating of the ac power adapter: 100 V to 240 V ac
Battery pack • Lenovo IdeaPad C340-14IML: 45 Wh
• Lenovo IdeaPad C340-15IML/Lenovo IdeaPad C340-15IIL: 52.5 Wh
Microprocessor To view the microprocessor information of your computer, right-click the Start
button and then click System.
Memory • Double data rate 4 (DDR4) small outline dual in-line memory module (SODIMM)
• On-board memory
Storage device
• Lenovo IdeaPad C340-14IML:
– M.2 PCIE solid-state drive
• Lenovo IdeaPad C340-15IML/Lenovo IdeaPad C340-15IIL:
– M.2 PCIE solid-state drive
– 2.5-inch hard disk drive*
Display
• Display size
– Lenovo IdeaPad C340-14IML: 355.6 mm (14.0 inches)
– Lenovo IdeaPad C340-15IML/Lenovo IdeaPad C340-15IIL: 381 mm (15.0
inches)
• Display resolution: 1366 x 768 pixels or 1920 x 1080 pixels
• Multi-touch
Keyboard • Function keys
• Six-row keyboard (with backlight*)
Connectors and slots
• ac power connector
• Audio connector
• Two USB 3.1 connectors Gen 1 (including one Always On USB 3.1 connector
Gen 1)
• USB-C connector
• HDMI connector
• Media-card slot
Chapter 1.Meet your computer 5
Security features • Fingerprint reader*
• Password
Wireless features • Bluetooth
• Wireless LAN
Others • Camera
• Microphones
* for selected models
Note: The battery capacity is the typical or average capacity as measured in a specific test environment.
Capacities measured in other environments may differ but are no lower than the rated capacity (see product
label).
Statement on USB transfer rate
Depending on many factors such as the processing capability of the host and peripheral devices, file
attributes, and other factors related to system configuration and operating environments, the actual transfer
rate using the various USB connectors on this device will vary and will be slower than the data rate listed
below for each corresponding device.
USB device Data rate (Gbit/s)
3.1 Gen 1 5
3.1 Gen 2 10
3.2 20
6Lenovo IdeaPad C340 Series User Guide
Chapter 2. Get started with your computer
Get started with Windows 10
Learn the basics of Windows 10 and start working with it right away. For more information about Windows
10, see the Windows help information.
Windows account
To use the Windows operating system, a user account is required. It can either be a Windows user account
or a Microsoft account.
Windows user account
When you start Windows for the first time, you are prompted to create a Windows user account. This first
account you created is of the “Administrator” type. With an Administrator account, you can create additional
user accounts or change account types by doing the following:
1. Open the Start menu and select Settings ➙ Accounts ➙ Family & other users.
2. Follow the on-screen instructions.
Microsoft account
You can also log in to the Windows operating system with a Microsoft account.
To create a Microsoft account, go to the Microsoft sign-up page at https://signup.live.com and follow the on-
screen instructions.
With a Microsoft account, you can:
• Enjoy one-time signing in if you are using other Microsoft services, such as OneDrive, Skype, and Outlook.
com.
• Sync personalized settings across other Windows-based devices.
© Copyright Lenovo 2019 7
Windows user interface
1. Account Change account settings, lock the computer, or sign out from the current account.
2. Documents Open the Documents folder, a default folder to save your received files.
3. Pictures Open the Pictures folder, a default folder to save your received pictures.
4. Settings Launch Settings.
5. Power Shut down, restart, or put the computer into sleep.
6. Start button Open the Start menu.
7. Windows Search Type what you are looking for in the search box and get search results from your
computer and the Web.
8. Task View Display all opened apps and switch among them.
9. Windows notification area Display notifications and status of some features.
10. Battery status icon Display power status and change battery or power settings. When your computer
is not connected to ac power, the icon changes to .
11. Network icon Connect to an available wireless network and display the network status.
12. Action center Display the latest notifications from apps and provide quick access to some
features.
Open the Start menu
• Click the Start button.
• Press the Windows logo key on the keyboard.
Access Control Panel
• Open the Start menu and click Windows System ➙ Control Panel.
• Use Windows Search.
8Lenovo IdeaPad C340 Series User Guide
Launch an app
• Open the Start menu and select the app you want to launch.
• Use Windows Search.
Windows label
Your computer might have a Windows 10 Genuine Microsoft label affixed to its cover depending on the
following factors:
• Your geographic location
• Edition of Windows 10 that is preinstalled
Go to https://www.microsoft.com/en-us/howtotell/Hardware.aspx for illustrations of the various types of
Genuine Microsoft labels.
• In the People’s Republic of China, the Genuine Microsoft label is required on all computer models
preinstalled with any version of Windows 10.
• In other countries and regions, the Genuine Microsoft label is required only on computer models licensed
for Windows 10 Pro.
The absence of a Genuine Microsoft label does not indicate that the preinstalled Windows version is not
genuine. For details on how to tell whether your preinstalled Windows product is genuine, refer to the
information provided by Microsoft at https://www.microsoft.com/en-us/howtotell/default.aspx
There are no external, visual indicators of the Product ID or Windows version for which the computer is
licensed. Instead, the Product ID is recorded in the computer firmware. Whenever a Windows 10 product is
installed, the installation program checks the computer firmware for a valid, matching Product ID to complete
the activation.
In some cases, an earlier Windows version might be preinstalled under the terms of the Windows 10 Pro
license downgrade rights.
Connect to networks
Your computer helps you connect to the world through a wireless network.
1. Click the network icon in the Windows notification area. A list of available wireless networks is displayed.
2. Select a network to connect to. Provide required information if needed.
Chapter 2.Get started with your computer 9
Use Lenovo Vantage
The preinstalled Lenovo Vantage is a customized one-stop solution to help you maintain your computer with
automated updates and fixes, configure hardware settings, and get personalized support.
Access Lenovo Vantage
Open the Start menu and click Lenovo Vantage. You also can type Lenovo Vantage in the search box.
To download the latest version of Lenovo Vantage, go to Microsoft Store and search by the app name.
Key features
Lenovo Vantage makes periodic updates of the features to keep improving your experience with your
computer.
Note: The available features vary depending on the computer model.
• System Update
Download and install firmware and driver updates to keep your computer up-to-date. You can configure
the options to install updates automatically when available.
• Hardware Settings
Configure intelligent settings of the following hardware to make your computer smarter to use:
– Always On USB
– Battery
– Camera
– Computer display
– Keyboard
– Microphone
– Speakers
– Touchpad
• Health & Support
Monitor your computer health and get personalized support of your computer. You can:
– Scan the computer hardware.
– Look up computer warranty status (online).
– Access User Guide.
– Read tips and tricks articles customized for your computer.
• Security Advisor
Make sure that your computer is always staying protected and safe.
10 Lenovo IdeaPad C340 Series User Guide
Interact with your computer
Your computer provides you various ways to navigate the screen.
Hotkeys
Some keys on the keyboard are printed with icons. These keys are called hotkeys and can be pressed alone
or in combination with the Fn key to access certain Windows functions or settings quickly. The functions of
hotkeys are symbolized by the icons printed on them.
Hotkey Function
Mutes/Unmutes the computer.
If you mute the computer and turn off your computer, the speakers remain muted
when you turn on your computer.
/ Decreases/Increases volume.
Enables/Disables the microphones.
Refreshes the current window.
Enables/Disables the touchpad.
Turns on/off airplane mode.
Enables/Disables the camera.
Locks the current user account.
Manages external displays.
/ Decreases/Increases display brightness.
Fn + B Equal the Break key on a conventional external keyboard.
Fn + P Equal the Pause key on a conventional external keyboard.
Fn + S Equal the SysRq key on a conventional external keyboard.
Fn + K Equal the ScrLK or Scroll Lock key on a conventional external keyboard.
Fn + Q Switch among the three modes, auto mode, performance mode and quiet mode.
Hotkey mode
Some hotkeys share keys with functions keys (F1 to F12). The hotkey mode is a UEFI/BIOS setting that
changes how hotkeys (or function keys) are used.
Hotkey mode setting How to use hotkeys How to use function keys
Disabled Hold down the Fn key and press one of
the hotkeys.
Press the function keys directly.
Enabled Press the hotkeys directly. Hold down the Fn key and press one of
the function keys.
Note: Hotkeys that do not share keys with function keys are not affected by the hotkey mode setting. They
should always be used with the Fn key.
Chapter 2.Get started with your computer 11
Use the multi-touch screen
Your computer display supports the multi-touch function. You can navigate the screen with simple touch
gestures.
Note: Some gestures might not be available depending on the app you use.
Tap once
• From the Start menu: Open an app or item.
• From the desktop: Select an app or item.
• In an open app: Perform an action such as Copy, Save, and Delete, depending
on the app.
Tap twice quickly
Open an app or item from the desktop.
Tap and hold
Open a shortcut menu.
Slide
Scroll through items, such as lists, pages, and photos.
12 Lenovo IdeaPad C340 Series User Guide
Swipe in from the left edge
View all your open windows in task view.
• Swipe downwards shortly from the top edge (for full-screened app or
when your computer is in the tablet mode)
Show a hidden title bar.
• Swipe in from the top edge to the bottom edge (when your computer is in
the tablet mode)
Close the current app.
Tips
• Turn off the computer before cleaning the multi-touch screen.
• Use a dry, soft, and lint-free cloth or a piece of absorbent cotton to remove fingerprints or dust from the
multi-touch screen. Do not apply solvents to the cloth.
• The multi-touch screen is a glass panel covered with a plastic film. Do not apply pressure or place any
metallic object on the screen, which might damage the touch panel or cause it to malfunction.
• Do not use fingernails, gloved fingers, or inanimate objects for input on the screen.
• Regularly calibrate the accuracy of the finger input to avoid a discrepancy.
Use multimedia
Use your computer for business or entertainment with the built-in components (camera, speakers, and audio
features) or connected external devices (an external projector, monitor, and HDTV).
Use audio
To enhance your listening experience, connect speakers, headphones, or a headset with a 3.5-mm (0.14-
inch) and 4-pole plug to the audio connector.
Change the sound settings
1. Go to Control Panel and view by category.
2. Click Hardware and Sound ➙ Sound.
3. Change the settings as you prefer.
Use the camera
You can use the built-in camera to take photos or record videos. The indicator next to the camera is on when
the camera is in use.
14 Lenovo IdeaPad C340 Series User Guide
To take photos or record videos:
1. Open the Start menu and click Camera.
2. Click the camera icon to take photos. Click the video icon to record videos.
Note: To switch from photo mode to video mode, click Switch to Video mode .
To configure the camera settings, open the Start menu and then click Lenovo Vantage ➙ Hardware
Settings ➙ Audio/Visual. Locate the Camera section and then follow the on-screen instructions to
configure the camera settings.
Connect to an external display
Connect your computer to a projector or a monitor to give presentations or expand your workspace.
Connect a wired display
1. Connect the external display to an appropriate video connector on your computer, such as the HDMI
connector .
2. Connect the external display to an electrical outlet.
3. Turn on the external display.
If your computer cannot detect the external display, right-click a blank area on the desktop, and then click
Display settings ➙ Detect.
Supported resolution
Your computer supports the following video resolution, if the external display also supports that resolution.
Connect the external display to Supported resolution
the HDMI connector Up to 3840 x 2160 pixels / 30 Hz
Connect a wireless display (for computers and external displays supporting Miracast®)
• Open the Start menu, and then click Settings ➙ Devices ➙ Bluetooth & other devices ➙ Add
Bluetooth or other device ➙ Wireless display or dock.
• Click the action center icon in the Windows notification area and click Connect. Select the wireless
display and follow the on-screen instructions.
Set the display mode
Press and then select a display mode of your preference.
• PC screen only: Displays the video output only on your computer screen.
Note: Depending on the situation, you might see Disconnect, PC screen only, Computer only, or
Disconnect projector.
• Duplicate: Displays the same video output on both your computer screen and an external display.
• Extend: Extends the video output from your computer display to an external display. You can drag and
move items between the two displays.
• Second screen only: Displays the video output only on an external display.
Note: Depending on the situation, you might see Projector only or Second screen only.
Chapter 2.Get started with your computer 15
If you show programs using DirectDraw or Direct3D® in full-screen mode, only the main display shows the
video output.
Change display settings
1. Right-click a blank area on the desktop and select Display settings.
2. Select the display that you want to configure.
3. Change display settings of your preference.
You can change the settings for both the computer display and the external display. For example, you can
define which one is the main display and which one is the secondary display. You also can change the
resolution and orientation.
Note: If you set a higher resolution for the computer display than the external display, only part of the screen
can be displayed on the external display.
16 Lenovo IdeaPad C340 Series User Guide
Operating modes
Your computer display can be rotated up to 360 degrees.
Attention: Do not rotate the computer display with too much force, or apply too much force to the upper-
right or upper-left corner of the computer display. Otherwise the display or hinges might get damaged.
Your computer features the following four operating modes. You can switch among different modes
according to your preference.
Note: The keyboard, the mouse and the touch pad are automatically disabled in the stand mode, tent mode,
and tablet mode. Use the touch screen to control your computer instead.
Notebook mode Stand mode
Tent mode Tablet mode
Chapter 2.Get started with your computer 17
Lenovo Digital Pen
Selected models are equipped with Lenovo Digital Pen. The pen is not waterproof. Keep the pen away from
water and excessive moisture. To purchase Lenovo Digital Pen, go to https://www.lenovo.com/accessories.
Install the AAAA battery
Lenovo Digital Pen uses AAAA battery. The AAAA battery is provided in some countries or regions.
Use Lenovo Digital Pen
1 Eraser button
2 Click button
You can perform the following operations with the Lenovo Digital Pen:
• To click or make a selection, tap the display once.
• To double-click, tap twice without pausing.
• To right-click, tap the display and hold the pen there for one second. Alternatively, you can press and hold
the click button 2 and tap the display.
• To erase ink, press and hold the eraser button 1, tap the display, and drag the pen across the ink you
want to erase.
18 Lenovo IdeaPad C340 Series User Guide
Chapter 3. Explore your computer
Manage power
Use the information in this section to achieve the best balance between performance and power efficiency.
Check the battery status
The battery status icon or is in the Windows notification area. You can check the battery status, view
the current power plan, and access battery settings quickly.
Click the battery status icon to display the percentage of battery power remaining and change the power
mode. A warning message is displayed when the battery is low.
Charge the battery
When the battery power is low, charge your battery by connecting your computer to ac power.
The battery is fully charged in about two to four hours. The actual charging time depends on the battery
capacity, the physical environment, and whether you are using the computer.
Battery charging is also affected by its temperature. The recommended battery temperature range for
charging the battery is between 10°C (50°F) and 35°C (95°F).
Note: To maximize the life of the battery, the computer does not start recharging the battery if the remaining
power is greater than 95%.
Check the battery temperature
1. Open the Start menu and click Lenovo Vantage.
2. Click Hardware Settings ➙ Power.
3. Locate the Power Status section and then click Show Details to view the battery temperature.
Maximize the battery life
• Lower the brightness of the computer display.
• Turn off the wireless features when not in use.
• Use the battery until the charge is depleted.
• Recharge the battery completely before using it.
Set power button behaviors
You can define what the power button does according to your preference. For example, by pressing the
power button, you can turn off the computer or put the computer to sleep or hibernation mode.
To change what the power button does:
1. Right-click the battery status icon in the Windows notification area.
2. Click Power Options ➙ Choose what the power buttons do.
3. Change the settings as you prefer.
© Copyright Lenovo 2019 19
Set the power plan
For ENERGY STAR® compliant computers, the following power plan takes effect when your computers have
been idle for a specified duration:
Table 1. Default power plan (when plugged into ac power)
• Turn off the display: After 10 minutes
• Put the computer to sleep: After 30 minutes
To reset the power plan to achieve the best balance between performance and power saving:
1. Right-click the battery status icon and select Power Options.
2. Click Change plan setting to choose or customize a power plan as you prefer.
Transfer data
Quickly share your files using the built-in Bluetooth among devices with the same features. You also can
insert a media card to transfer data.
Connect a Bluetooth-enabled device
You can connect all types of Bluetooth device to your computer, such as a keyboard, a mouse, a
smartphone, or speakers. The devices must be within a short distance, usually 10 meters (33 feet), from the
computer.
1. Open the Start menu, and then click Settings ➙ Devices ➙ Bluetooth & other devices. Turn on the
Bluetooth switch.
2. Click Add Bluetooth or other device ➙ Bluetooth.
3. Select a Bluetooth device, and then follow the on-screen instructions.
Your Bluetooth-enabled device and computer will automatically connect the next time if the two devices are
in range of each other with Bluetooth turned on. You can use Bluetooth for data transfer or remote control
and communication.
Use a media card
Install the card
1. Locate the card slot. See “Right” on page 4.
2. Orient the metal contacts of the card to ensure that they are facing down and pointing toward the card
slot.
3. Insert the card firmly into the card slot.
Remove the card
Attention: Before removing a card, eject the card from the Windows operating system first. Otherwise, data
on the card might get corrupted or lost.
1. Click the triangular icon in the Windows notification area to show hidden icons. Then, right-click the
Safely Remove Hardware and Eject Media icon.
2. Select the corresponding item to eject the card from the Windows operating system.
3. Press the card and remove it from your computer. Store the card safely for future use.
20 Lenovo IdeaPad C340 Series User Guide
22 Lenovo IdeaPad C340 Series User Guide
Chapter 4. Secure your computer and information
Use passwords
This section introduces types of passwords in UEFI (Unified Extensible Firmware Interface) or BIOS (Basic
Input/Output System) and how to set, change, and remove a password.
Password types
You can set various passwords in the UEFI/BIOS setup utility.
Password type Pre-requisite When set
Administrator password No You must enter it to start the setup
utility.
User password The administrator password must be
set.
You can use the user password to start
the setup utility.
Master hard disk password No You must enter it to start the operating
system.
User hard disk password The master hard disk password must
be set.
You can use the user hard disk
password to start the operating system.
Notes:
• All passwords set in the setup utility consist of alphanumeric characters only.
• If you start the setup utility using the user password, you can only change a few settings.
Set administrator password
You set the administrator password to prevent unauthorized access to the UEFI/BIOS setup utility.
Attention: If you forget the administrator password, a Lenovo authorized service personnel cannot reset
your password. You must take your computer to a Lenovo authorized service personnel or a marketing
representative to have the system board replaced. Proof of purchase is required and a fee will be charged for
parts and service.
1. Start the UEFI/BIOS setup utility.
2. Select Security ➙ Set Administrator Password and press Enter.
3. Enter a password string that contains only letters and numbers. Then, press Enter.
4. Enter the password again and press Enter.
5. Select Exit ➙ Exit Saving Changes.
Next time you start the computer, you must enter the administrator password to start the setup utility. If
Power on Password is enabled, you must enter the administrator password or the user password to start
the computer.
Change or remove administrator password
Only the administrator can change or remove the administrator password. If you remove the administrator
password, the user password will also be removed.
1. Start the UEFI/BIOS setup utility using the administrator password.
© Copyright Lenovo 2019 23
2. Select Security ➙ Set Administrator Password and press Enter.
3. Enter the current password.
4. In the Enter New Password text box, enter the new password.
5. In the Confirm New Password text box, enter the new password again.
Note: If you want to remove the password, press Enter in both text boxes and do not enter any
character.
6. Select Exit ➙ Exit Saving Changes.
Set user password
Before you can set up user password, the administrator password must be set.
The administrator of the setup utility might need to set up a user password for use by others.
1. Start the UEFI/BIOS setup utility using the administrator password.
2. Select Security ➙ Set User Password and press Enter.
3. Enter a password string that contains only letters and numbers. Then, press Enter.
Note: The user password must be different from the administrator password.
4. Enter the password again and press Enter.
5. Select Exit ➙ Exit Saving Changes.
Enable power-on password
If the administrator password has been set, you can enable power-on password to enforce greater security.
1. Start the UEFI/BIOS setup utility.
2. Select Security ➙ Power on Password and press Enter.
Note: The administrator password must be set in advance.
3. Change the setting to Enabled.
4. Select Exit ➙ Exit Saving Changes.
If power-on password is enabled, a prompt appears on the screen every time you turn on the computer. You
must enter the administrator or user password to start the computer.
Set hard disk password
You can set a hard disk password in the setup utility to prevent unauthorized access to your data.
Attention: Be extremely careful when setting a hard disk password. If you forget the hard disk password, a
Lenovo authorized service personnel cannot reset your password or recover data from the hard disk. You
must take your computer to a Lenovo authorized service personnel or a marketing representative to have the
hard disk drive replaced. Proof of purchase is required and a fee will be charged for parts and service.
1. Start the UEFI/BIOS setup utility.
Note: If you start the setup utility using the user password, you cannot set hard disk password.
2. Select Security ➙ Set Hard Disk Password and press Enter.
3. Follow on-screen instructions to set both the master and the user passwords.
Note: The master and user hard disk passwords must be set at the same time.
24 Lenovo IdeaPad C340 Series User Guide
4. Select Exit ➙ Exit Saving Changes.
If the hard disk password is set, you must provide the correct password to start the operating system.
Change or remove hard disk password
1. Start the UEFI/BIOS setup utility.
2. Select Security.
3. Change or remove the hard disk password.
• To change or remove master hard disk password, select Change Master Password and press Enter.
Note: If you remove the master hard disk password, the user hard disk password will also be
removed.
• To change user hard disk password, select Change User Password and press Enter.
Note: If you delete the master password, the user hard disk password will be removed together.
4. Select Exit ➙ Exit Saving Changes.
Use the fingerprint reader
Selected models include a fingerprint reader. You can use the reader to enroll your fingerprints. After
enrolling, you can tap your finger on the fingerprint reader to log in to Windows.
Enroll your fingerprints
Open the Start menu and then click Settings ➙ Accounts ➙ Sign-in options. Then, follow the on-screen
instructions to finish the enrollment.
Notes:
• You need to add a Windows password before you can enroll fingerprints.
• It is recommended that you enroll more than one fingerprint in case of any injury to your fingers.
Maintain the fingerprint reader
To ensure that the fingerprint reader works correctly, do not:
• Scratch the surface of the fingerprint reader with anything hard.
• Use or touch the reader with a wet, dirty, wrinkled, or injured finger.
Use firewalls and antivirus programs
Your computer might be preinstalled with a firewall program. The firewall protects against computer Internet
security threats, unauthorized access, intrusions, and Internet attacks. It also protects your privacy.
A full version of antivirus program is provided with a free 30-day subscription. After 30 days, you must renew
the license to continue receiving the antivirus program updates.
For more information, see the help system of the program.
Chapter 4.Secure your computer and information 25
26 Lenovo IdeaPad C340 Series User Guide
Chapter 5. Configure advanced settings
This chapter provides information about UEFI/BIOS and system recovery.
UEFI/BIOS
This section introduces what is UEFI/BIOS and the operations you can perform in UEFI/BIOS.
What is UEFI/BIOS setup utility
UEFI/BIOS is the first program that the computer runs when the computer is turned on. UEFI/BIOS initializes
the hardware components and loads the operating system and other programs. Your computer may include
a setup program (setup utility) with which you can change UEFI/BIOS settings.
Start the UEFI/BIOS setup utility
1. Press the Novo button with an expanded paper clip (or similar slender object) when your computer is off.
2. Select BIOS Setup from Novo Button Menu.
Navigate in the UEFI/BIOS interface
You can navigate in the UEFI/BIOS interface by pressing the following keys:
F1 Displays the General Help screen.
F9 Restores to the default settings.
F10 Saves your configuration and exits.
F5 Changes to a lower value.
F6 Changes to a higher value.
↑↓ Locates an item.
← → Selects a tab.
Esc Exits the submenu and returns to the parent menu.
Enter Enters the selected tab or submenu.
Change the startup sequence
1. Start the UEFI/BIOS setup utility.
2. Select Boot. The default device order list is displayed.
Note: The Boot menu is displayed if the computer cannot start from any devices or the operating
system cannot be found.
3. Set the startup sequence as desired.
4. Press F10 to save the changes and restart the computer.
To change the startup sequence temporarily:
1. Restart the computer. When the logo screen is displayed, press F12.
Note: For computers with Hotkey mode enabled, press Fn + F12.
© Copyright Lenovo 2019 27
2. Select the device that you want the computer to start from and press Enter.
Set the system date and time
1. Start the UEFI/BIOS setup utility.
2. Select Configuration ➙ System Time / System Date and set the system date and time as desired.
3. Press F10 to save changes and exit.
Enable/Disable hotkey mode
Step 1. Start the UEFI/BIOS setup utility.
Step 2. Select Configuration ➙ Hotkey Mode and press Enter; change the setting to Disabled or
Enabled.
Step 3. Select Exit ➙ Exit Saving Changes.
Enable/Disable always-on
1. Start the UEFI/BIOS setup utility.
2. Select Configuration ➙ Always On USB and press Enter. Change the setting to Disabled or Enabled.
3. Select Exit ➙ Exit Saving Changes.
Update UEFI/BIOS
When you install a new program, device driver, or hardware component, you might need to update UEFI/
BIOS.
Download and install the latest UEFI/BIOS update package by one of the following methods:
• From Lenovo Vantage:
1. Open the Start menu and click Lenovo Vantage.
2. Click System Update. In the Lenovo System Update section, click Check for updates. The
available update packages are displayed and categorized by critical, recommended, or optional.
3. If the latest UEFI/BIOS update package is available, select the package and click Install selected.
Then, the update package will be downloaded and installed automatically.
• From the Lenovo Support Web site:
Go to https://support.lenovo.com and select the entry for your computer. Then, follow the on-screen
instructions to download and install the latest UEFI/BIOS update package.
Recovery information
This section introduces the recovery information of the Windows 10 operating system. Ensure that you read
and follow the on-screen recovery instructions. The data on your computer might be deleted during the
recovery process. To avoid data loss, make a backup copy of all the data that you want to keep.
Reset your computer
In the resetting process, you can choose to keep your files or remove them when you reinstall the operating
system.
Note: The items in the graphical user interface (GUI) might change without notice.
1. Open the Start menu, and then click Settings ➙ Update & Security ➙ Recovery.
2. In the Reset this PC section, click Get started.
28 Lenovo IdeaPad C340 Series User Guide
3. Follow the on-screen instructions to reset your computer.
Use advanced options
Note: The items in the graphical user interface (GUI) might change without notice.
1. Open the Start menu, and then click Settings ➙ Update & security ➙ Recovery.
2. In the Advanced startup section, click Restart now ➙ Troubleshoot ➙ Advanced options.
3. Select a preferred option from the following list, and then follow the on-screen instructions.
• System Restore: Use a restore point recorded on your PC to restore Windows
• Startup Repair: Fix problems that keep Windows from loading
• Go back to the previous version
• Command Prompt: Use the Command Prompt for advanced troubleshooting
• System Image Recovery: Recover Windows using a specific system image file
• UEFI Firmware Settings: Change settings in your PC's UEFI firmware
• Startup Settings: Change Windows startup behavior
Windows automatic recovery
Note: Ensure that your computer is connected to ac power during the recovery process.
The Windows recovery environment on your computer operates independently from the Windows 10
operating system. It enables you to recover or repair the operating system even if the Windows 10 operating
system fails to start.
After two consecutive failed boot attempts, the Windows recovery environment starts automatically. Then
you can choose repair and recovery options by following the on-screen instructions.
Create and use a recovery USB device
It is recommended that you create a recovery USB drive as early as possible as a backup for the Windows
recovery programs. With the recovery USB drive, you can troubleshoot and fix the problems even if the
preinstalled Windows recovery programs are damaged. If you did not create a recovery USB drive as a
precautionary measure, you can contact Lenovo Customer Support Center and purchase one from Lenovo.
For a list of the Lenovo Support phone numbers for your country or region, go to:
https://pcsupport.lenovo.com/supportphonelist
Create a recovery USB drive
Attention: The creation process deletes anything stored on the USB drive. To avoid data loss, make a
backup copy of all the data that you want to keep.
1. Ensure that your computer is connected to ac power.
2. Prepare a USB drive with at least 16 GB of storage capacity. The actual USB capacity required depends
on the size of the recovery image.
3. Connect the prepared USB drive to the computer.
4. Type recovery in the search box. Then click Create a recovery drive.
5. Click Yes in the User Account Control window to allow the Recovery Media Creator program to start.
6. In the Recovery Drive window, follow the on-screen instructions to create a recovery USB drive.
Chapter 5.Configure advanced settings 29
Use the recovery USB drive
1. Ensure that your computer is connected to ac power.
2. Connect the recovery USB drive to the computer.
3. Turn on or restart the computer. When the logo screen is displayed, press F12. The Boot Menu window
opens.
4. Select the recovery USB drive as the boot device.
5. Click Troubleshoot to display optional recovery solutions.
6. Select a recovery solution as desired. Then follow the on-screen instructions to complete the process.
30 Lenovo IdeaPad C340 Series User Guide
Chapter 6. Help and support
Frequently asked questions
How do I access Control Panel? • Open the Start menu and click Windows System ➙ Control Panel.
• Use Windows search.
How do I turn off my computer? Open the Start menu and click Power. Then click Shut down.
How do I partition my storage
drive? https://support.lenovo.com/solutions/ht503851
What do I do if my computer
stops responding.
Press and hold the power button until the computer turns off. Then restart the
computer.
What do I do if I spill liquid on the
computer?
1. Carefully unplug the ac power adapter and turn off the computer immediately.
The more quickly you stop the current from passing through the computer the
more likely you will reduce damage from short circuits.
Attention: Although you might lose some data or work by turning off the
computer immediately, leaving the computer on might make your computer
unusable.
2. Do not try to drain out the liquid by turning over the computer. If your
computer has keyboard drainage holes on the bottom, the liquid will be
drained out through the holes.
3. Wait until you are certain that all the liquid is dry before turning on your
computer.
Where can I get the latest device
drivers and UEFI/BIOS?
• From Lenovo Vantage. See “Update UEFI/BIOS” on page 28.
• Download from Lenovo Support Web site at https://support.lenovo.com.
© Copyright Lenovo 2019 31
Self-help resources
Use the following self-help resources to learn more about the computer and troubleshoot problems.
Resources How to access?
Use Lenovo Vantage to:
• Download and install the latest
drivers and firmware.
• Configure hardware settings.
• Diagnose computer hardware
problems.
• Check the computer warranty
status.
• Protect you computer from
malicious Wi-Fi networks.
• Open the Start menu and click Lenovo Vantage.
• Use Windows Search.
Product documentation:
• Safety and Warranty Guide
• Setup Guide
• This User Guide
• Regulatory Notice
1. Go to https://support.lenovo.com.
2. Detect your computer or select computer model manually.
3. Select Documentation and filter out the documentation you want.
Lenovo Support Web site with
the latest support information of
the following:
• Drivers and software
• Diagnostic solutions
• Product and service warranty
• Product and parts details
• Knowledge base and
frequently asked questions
https://support.lenovo.com
Windows help information
• Open the Start menu and click Get Help or Tips.
• Use Windows Search or the Cortana® personal assistant.
• Microsoft support Web site: https://support.microsoft.com
32 Lenovo IdeaPad C340 Series User Guide
Call Lenovo
If you have tried to correct the problem yourself and still need help, you can call Lenovo Customer Support
Center.
Before you contact Lenovo
Prepare the following before you contact Lenovo:
1. Record the problem symptoms and details:
• What is the problem? Is it continuous or intermittent?
• Any error message or error code?
• What operating system are you using? Which version?
• Which software applications were running at the time of the problem?
• Can the problem be reproduced? If so, how?
2. Record the system information:
• Product name
• Machine type and serial number
The following illustration shows where to find the machine type and serial number of your computer.
Lenovo Customer Support Center
During the warranty period, you can call Lenovo Customer Support Center for help.
Telephone numbers
For a list of the Lenovo Support phone numbers for your country or region:
• Go to https://pcsupport.lenovo.com/supportphonelist for the latest phone numbers.
• Refer to the Safety and Warranty Guide that comes with your computer.
Note: Phone numbers are subject to change without notice. If the number for your country or region is not
provided, contact your Lenovo reseller or Lenovo marketing representative.
Services available during the warranty period
• Problem determination - Trained personnel are available to assist you with determining if you have a
hardware problem and deciding what action is necessary to fix the problem.
• Lenovo hardware repair - If the problem is determined to be caused by Lenovo hardware under warranty,
trained service personnel are available to provide the applicable level of service.
Chapter 6.Help and support 33
• Engineering change management - Occasionally, there might be changes that are required after a product
has been sold. Lenovo or your reseller, if authorized by Lenovo, will make selected Engineering Changes
(ECs) that apply to your hardware available.
Services not covered
• Replacement or use of parts not manufactured for or by Lenovo or nonwarranted parts
• Identification of software problem sources
• Configuration of UEFI/BIOS as part of an installation or upgrade
• Changes, modifications, or upgrades to device drivers
• Installation and maintenance of network operating systems (NOS)
• Installation and maintenance of programs
For the terms and conditions of the Lenovo Limited Warranty that apply to your Lenovo hardware product,
see “Warranty information” in the Safety and Warranty Guide that comes with your computer.
Purchase additional services
During and after the warranty period, you can purchase additional services from Lenovo at https://
www.lenovo.com/services.
Service availability and service name might vary by country or region.
34 Lenovo IdeaPad C340 Series User Guide
Appendix A. Important safety information
Safety notices
This information can help you safely use your computer. Follow and retain all information included with your
computer. The information in this document does not alter the terms of your purchase agreement or the
Limited Warranty. For more information, see "Warranty Information" in the Safety and Warranty Guide that
comes with your computer.
Customer safety is important. Our products are developed to be safe and effective. However, personal
computers are electronic devices. Power cords, power adapters, and other features can create potential
safety risks that can result in physical injury or property damage, especially if misused. To reduce these risks,
follow the instructions included with your product, observe all warnings on the product and in the operating
instructions, and review the information included in this document carefully. By carefully following the
information contained in this document and provided with your product, you can help protect yourself from
hazards and create a safer computer work environment.
Note: This information includes references to power adapters and batteries. In addition, some products
(such as speakers and monitors) ship with external power adapters. If you have such a product, this
information applies to your product. In addition, computer products contain a coin-sized internal battery that
provides power to the system clock even when the computer is unplugged, so the battery safety information
applies to all computer products.
Important information about using your computer
Ensure that you follow the important tips given here to get the most use and enjoyment out of your computer.
Failure to do so might lead to discomfort or injury, or cause the computer to fail.
Protect yourself from the heat that your computer generates.
When your computer is turned on or the battery is charging, the base, the palm
rest, and some other parts may become hot. The temperature they reach depends
on the amount of system activity and the level of charge in the battery.
Extended contact with your body, even through clothing, could cause discomfort
or even a skin burn.
• Avoid keeping your hands, your lap, or any other part of your body in contact
with a hot section of the computer for any extended time.
• Periodically take hands from using the keyboard by lifting your hands from the
palm rest.
© Copyright Lenovo 2019 35
Protect yourself from the heat generated by the ac power adapter.
When the ac power adapter is connected to an electrical outlet and your
computer, it generates heat.
Extended contact with your body, even through clothing, may cause a skin
burn.
• Do not place the ac power adapter in contact with any part of your body
while it is in use.
• Never use it to warm your body.
• Do not wrap the cords around the ac power adapter while in use.
Prevent your computer from getting wet.
To avoid spills and the danger of electrical shock, keep liquids away from your
computer.
Protect the cables from being damaged.
Applying strong force to cables may damage or break them.
Route communication lines, or the cables of an ac power adapter, a mouse, a
keyboard, a printer, or any other electronic device, so that they cannot be
walked on, tripped over, pinched by your computer or other objects, or in any
way subject to treatment that could interfere with the operation of your
computer.
Protect your computer and data when moving it.
Before moving a computer equipped with a hard disk drive, do one of the
following:
• Turn it off.
• Put it in sleep mode.
• Put it in hibernation mode.
This helps to prevent damage to the computer, and possible loss of data.
36 Lenovo IdeaPad C340 Series User Guide
Handle your computer gently.
Do not drop, bump, scratch, twist, hit, vibrate, push, or place heavy objects on
your computer, display, or external devices.
Carry your computer carefully.
• Use a quality carrying case that provides adequate cushioning and protection.
• Do not pack your computer in a tightly packed suitcase or bag.
• Before putting your computer in a carrying case, make sure that it is off, in sleep
mode, or in hibernation mode. Do not put a computer in a carrying case while it is
turned on.
Conditions that require immediate action
Products can become damaged due to misuse or neglect. Some product damage is serious enough
that the product should not be used again until it has been inspected and, if necessary, repaired by an
authorized servicer.
As with any electronic device, pay close attention to the product when it is turned on.
On very rare occasions, you might notice an odor or see a puff of smoke or sparks vent from your
product. Or you might hear sounds like popping, cracking, or hissing. These might merely mean that
an internal electronic component has failed in a safe and controlled manner. Or, they might indicate a
potential safety issue. Do not take risks or attempt to diagnose the situation yourself. Contact the
Customer Support Center for further guidance. For a list of Service and Support phone numbers, see
the following Web site:
https://pcsupport.lenovo.com/supportphonelist
Frequently inspect your computer and its components for damage or wear or signs of danger. If you
have any question about the condition of a component, do not use the product. Contact the Customer
Support Center or the product manufacturer for instructions on how to inspect the product and have it
repaired, if necessary.
In the unlikely event that you notice any of the following conditions, or if you have any safety concerns
with your product, stop using the product and unplug it from the power source and
telecommunication lines until you can speak to the Customer Support Center for further guidance.
Appendix A. Important safety information 37
• Power cords, plugs, power adapters, extension cords, surge protectors, or power supplies that are
cracked, broken, or damaged.
• Signs of overheating, smoke, sparks, or fire.
• Damage to a battery (such as cracks, dents, or creases), discharge from a battery, or a buildup of foreign
substances on the battery.
• A cracking, hissing, or popping sound, or strong odor that comes from the product.
• Signs that liquid has been spilled or an object has fallen onto the computer product, the power cord, or
power adapter.
• The computer product, power cord, or power adapter has been exposed to water.
• The product has been dropped or damaged in any way.
• The product does not operate normally when you follow the operating instructions.
Note: If you notice these conditions with a product (such as an extension cord) that is not manufactured for
or by Lenovo, stop using that product until you can contact the product manufacturer for further instructions,
or until you get a suitable replacement.
Service and upgrades
Do not attempt to service a product yourself unless instructed to do so by the Customer Support Center or
your documentation. Only use a Service Provider who is approved to repair your particular product.
Note: Some computer parts can be upgraded or replaced by the customer. Upgrades typically are referred
to as options. Replacement parts approved for customer installation are referred to as Customer
Replaceable Units, or CRUs. Lenovo provides documentation with instructions when it is appropriate for
customers to install options or replace CRUs. You must closely follow all instructions when installing or
replacing parts. The Off state of a power indicator does not necessarily mean that voltage levels inside a
product are zero. Before you remove the covers from a product equipped with a power cord, always ensure
that the power is turned off and that the product is unplugged from any power source. If you have any
questions or concerns, contact the Customer Support Center.
Although there are no moving parts in your computer after the power cord has been disconnected, the
following warnings are required for your safety.
Keep fingers and other parts of your body away from hazardous, moving parts. If you suffer an injury, seek
medical care immediately.
Avoid contact with hot components inside the computer. During operation, some components become hot
enough to burn the skin. Before you open the computer cover, turn off the computer, disconnect power, and
wait approximately 10 minutes for the components to cool.
After replacing a CRU, reinstall all protective covers, including the computer cover, before connecting power
and operating the computer. This action is important to help prevent unexpected electrical shock and help
ensure the containment of an unexpected fire that could happen under extremely rare conditions.
38 Lenovo IdeaPad C340 Series User Guide
When replacing CRUs, be cautious of sharp edges or corners that might cause injury. If you suffer an injury,
seek medical care immediately.
Power cords and power adapters
DANGER
Use only the power cords and power adapters supplied by the product manufacturer.
The power cords shall be safety approved. For Germany, it shall be H03VV-F, 3G, 0.75 mm2, or
better. For other countries, the suitable types shall be used accordingly.
Never wrap a power cord around a power adapter or other object. Doing so can stress the cord in
ways that can cause the cord to fray, crack, or crimp. This can present a safety hazard.
Always route power cords so that they will not be walked on, tripped over, or pinched by objects.
Protect power cords and power adapters from liquids. For instance, do not leave your power cord
or power adapter near sinks, tubs, toilets, or on floors that are cleaned with liquid cleansers. Liquids
can cause a short circuit, particularly if the power cord or power adapter has been stressed by
misuse. Liquids also can cause gradual corrosion of power cord terminals and/or the connector
terminals on a power adapter, which can eventually result in overheating.
Ensure that all power cord connectors are securely and completely plugged into receptacles.
Do not use any power adapter that shows corrosion at the ac input pins or shows signs of
overheating (such as deformed plastic) at the ac input pins or anywhere on the power adapter.
Do not use any power cords where the electrical contacts on either end show signs of corrosion or
overheating or where the power cord appears to have been damaged in any way.
To prevent possible overheating, do not cover the power adapter with clothing or other objects
when the power adapter is plugged into an electrical outlet.
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.
Appendix A. Important safety information 39
Plugs and outlets
DANGER
If a receptacle (power outlet) that you intend to use with your computer equipment appears to be
damaged or corroded, do not use the outlet until it is replaced by a qualified electrician.
Do not bend or modify the plug. If the plug is damaged, contact the manufacturer to obtain a
replacement.
Do not share an electrical outlet with other home or commercial appliances that draw large
amounts of electricity; otherwise, unstable voltage might damage your computer, data, or attached
devices.
Some products are equipped with a three-pronged plug. This plug fits only into a grounded
electrical outlet. This is a safety feature. Do not defeat this safety feature by trying to insert it into a
non-grounded outlet. If you cannot insert the plug into the outlet, contact an electrician for an
approved outlet adapter or to replace the outlet with one that enables this safety feature. Never
overload an electrical outlet. The overall system load should not exceed 80 percent of the branch
circuit rating. Consult an electrician for more information if you have questions about power loads
and branch circuit ratings.
Be sure that the power outlet you are using is properly wired, easily accessible, and located close to
the equipment. Do not fully extend power cords in a way that will stress the cords.
Be sure that the power outlet provides the correct voltage and current for the product you are
installing.
Carefully connect and disconnect the equipment from the electrical outlet.
Power supply statement
Never remove the cover on a power supply or any part that has the following label attached.
Hazardous voltage, current, and energy levels are present inside any component that has this label attached.
There are no serviceable parts inside these components. If you suspect a problem with one of these parts,
contact a service technician.
External devices
CAUTION:
Do not connect or disconnect any external device cables other than Universal Serial Bus (USB) and
1394 cables while the computer power is on; otherwise, you might damage your computer. To avoid
possible damage to attached devices, wait at least five seconds after the computer is shut down to
disconnect external devices.
40 Lenovo IdeaPad C340 Series User Guide
General battery notice
DANGER
Batteries supplied by Lenovo for use with your product have been tested for compatibility and
should only be replaced with approved parts. A battery other than the one specified by Lenovo, or a
disassembled or modified battery is not covered by the warranty.
Battery abuse or mishandling can cause overheat, liquid leakage, or an explosion. To avoid possible
injury, do the following:
• Do not open, dissemble, or service any battery.
• Do not crush or puncture the battery.
• Do not short-circuit the battery, or expose it to water or other liquids.
• Keep the battery away from children.
• Keep the battery away from fire.
Stop using the battery if it is damaged, or if you notice any discharge or the buildup of foreign
materials on the battery leads.
Store the rechargeable batteries or products containing the rechargeable batteries at room
temperature, charged to approximately 30 to 50% of capacity. We recommend that the batteries be
charged about once per year to prevent overdischarge.
Do not put the battery in trash that is disposed of in landfills. When disposing of the battery, comply
with local ordinances or regulations.
Notice for removable rechargeable battery
DANGER
Only recharge the battery strictly according to instructions included in the product documentation.
If the battery is incorrectly replaced, there is danger of an explosion. The battery contains a small
amount of harmful substances.
Notice for built-in rechargeable battery
DANGER
Do not attempt to remove or replace the built-in rechargeable battery. Replacement of the battery
must be done by a Lenovo-authorized repair facility or technician.
Only recharge the battery strictly according to instructions included in the product documentation.
The Lenovo-authorized repair facilities or technicians recycle Lenovo batteries according to local
laws and regulations.
Appendix A. Important safety information 41
Lithium coin-cell battery notice
DANGER
Danger of explosion if battery is incorrectly replaced.
If the coin-cell battery is not a CRU, do not attempt to replace the coin-cell battery. Replacement of
the battery must be done by a Lenovo-authorized repair facility or technician.
The Lenovo-authorized repair facilities or technicians recycle Lenovo batteries according to local
laws and regulations.
When replacing the lithium coin-cell battery, use only the same type or equivalent type that is recommended
by the manufacturer. The battery contains lithium and can explode if not properly used, handled, or disposed
of. Swallowing the lithium coin-cell battery will cause chocking or severe internal burns in just two hours and
might even result in death.
Keep batteries away from children. If the lithium coin-cell battery is swallowed or placed inside any part of
the body, seek medical care immediately.
Do not:
• Throw or immerse into water
• Heat to more than 100 °C (212°F).
• Repair or disassemble
• Leave in an extremely low air pressure environment
• Leave in an extremely high-temperature environment
• Crush, puncture, cut, or incinerate
Dispose of the battery as required by local ordinances or regulations.
The following statement applies to users in the state of California, U.S.A.
California Perchlorate Information:
Products containing manganese dioxide lithium coin-cell batteries may contain perchlorate.
Perchlorate Material - special handling may apply, see https://www.dtsc.ca.gov/hazardouswaste/
perchlorate/.
42 Lenovo IdeaPad C340 Series User Guide
Heat and product ventilation
DANGER
Computers, ac power adapters, and many accessories can generate heat when turned on and when
batteries are charging. Notebook computers can generate a significant amount of heat due to their
compact size. Always follow these basic precautions:
• When your computer is turned on or the battery is charging, the base, the palm rest, and some
other parts may become hot. Avoid keeping your hands, your lap, or any other part of your body
in contact with a hot section of the computer for any extended length of time. When you use the
keyboard, avoid keeping your palms on the palm rest for a prolonged period of time. Your
computer generates some heat during normal operation. The amount of heat depends on the
amount of system activity and the battery charge level. Extended contact with your body, even
through clothing, could cause discomfort or even a skin burn. Periodically take breaks from using
the keyboard by lifting your hands from the palm rest; and be careful not to use the keyboard for
any extended length of time.
• Do not operate your computer or charge the battery near flammable materials or in explosive
environments.
• Ventilation slots, fans and/or heat sinks are provided with the product for safety, comfort, and
reliable operation. These features might inadvertently become blocked by placing the product on
a bed, sofa, carpet, or other flexible surface. Never block, cover, or disable these features.
• When the ac power adapter is connected to an electrical outlet and your computer, it generates
heat. Do not place the adapter in contact with any part of your body while using it. Never use the
ac power adapter to warm your body. Extended contact with your body, even through clothing,
may cause a skin burn.
For your safety, always follow these basic precautions with your computer:
• Keep the cover closed whenever the computer is plugged in.
• Regularly inspect the outside of the computer for dust accumulation.
• Remove dust from vents and any perforations in the bezel. More frequent cleanings might be
required for computers in dusty or high-traffic areas.
• Do not restrict or block any ventilation openings.
• Do not operate your computer inside furniture, as this might increase the risk of overheating.
• Airflow temperatures into the computer should not exceed 35°C (95°F).
Appendix A. Important safety information 43
Electrical current safety information
DANGER
Electric current from power, telephone, and communication cables is hazardous.
To avoid a shock hazard:
• Do not use your computer during a lightning storm.
• Do not connect or disconnect any cables or perform installation, maintenance, or reconfiguration
of this product during an electrical storm.
• Connect all power cords to a properly wired and grounded electrical outlet.
• Connect properly wired outlets to any equipment that will be attached to this product.
• Whenever possible, use one hand only to connect or disconnect signal cables.
• Never turn on any equipment when there is evidence of fire, water, or structural damage.
• Disconnect the attached power cords, battery, and all the cables before you open the device
covers, unless instructed otherwise in the installation and configuration procedures.
• Do not use your computer until all internal parts enclosures are fastened into place. Never use
the computer when internal parts and circuits are exposed.
DANGER
Connect and disconnect cables as described in the following procedures when installing, moving,
or opening covers on this product or attached devices.
To connect:
1. Turn everything OFF.
2. First, attach all cables to devices.
3. Attach signal cables to connectors.
4. Attach power cords to outlets.
5. Turn devices ON.
To disconnect:
1. Turn everything OFF.
2. First, remove power cords from outlets.
3. Remove signal cables from connectors.
4. Remove all cables from devices.
The power cord must be disconnected from the wall outlet or receptacle before installing all other electrical
cables connected to the computer.
The power cord may be reconnected to the wall outlet or receptacle only after all other electrical cables have
been connected to the computer.
DANGER
During electrical storms, do not perform any replacement and do not connect the telephone cable
to or disconnect it from the telephone outlet on the wall.
44 Lenovo IdeaPad C340 Series User Guide
Laser safety information
CAUTION:
When laser products (such as CD-ROMs, DVD drives, fiber optic devices, or transmitters) are
installed, note the following:
• Do not remove the covers. Removing the covers of the laser product could result in exposure to
hazardous laser radiation. There are no serviceable parts inside the device.
• Use of controls or adjustments or performance of procedures other than those specified herein
might result in hazardous radiation exposure.
DANGER
Some laser products contain an embedded Class 3B laser diode. Note the following:
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:
The liquid crystal display (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.
Note: For products with mercury-containing fluorescent lamps (for example, non-LED), the fluorescent lamp
in the liquid crystal display (LCD) contains mercury; dispose of according to local, state, or federal laws.
Using headphones or earphones
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.
Appendix A. Important safety information 45
Choking hazard notice
CHOKING HAZARD – Product contains small parts.
Keep away from children under three years.
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.
Static electricity prevention
Static electricity, although harmless to you, can seriously damage computer components and options.
Improper handling of static-sensitive parts can damage the part. When you unpack an option or CRU, do not
open the static-protective package containing the part until the instructions direct you to install it.
When you handle options or CRUs, or perform any work inside the computer, take the following precautions
to avoid static-electricity damage:
• Limit your movement. Movement can cause static electricity to build up around you.
• Always handle components carefully. Handle adapters, memory modules, and other circuit boards by the
edges. Never touch exposed circuitry.
• Prevent others from touching components.
• When you install a static-sensitive option or CRU, touch the static-protective package containing the part
to a metal expansion-slot cover or other unpainted metal surface on the computer for at least two
seconds. This reduces static electricity in the package and your body.
• When possible, remove the static-sensitive part from the static-protective packaging and install the part
without setting it down. When this is not possible, place the static-protective packaging on a smooth, level
surface and place the part on it.
• Do not place the part on the computer cover or other metal surface.
46 Lenovo IdeaPad C340 Series User Guide
Operating environment
Maximum altitude (without pressurization)
3048 m (10 000 ft)
Temperature
• At altitudes up to 2438 m (8000 ft)
– 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 no lower than 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)
Cleaning and maintenance
With appropriate care and maintenance your computer will serve you reliably. The following topics offer
information to help you keep your computer in top working order.
Basic maintenance tips
Here are some basic points about keeping your computer functioning properly:
• If possible, place your computer in a well-ventilated and dry area without direct exposure to sunshine.
• Store packing materials safely out of the reach of children to prevent the risk of suffocation from plastic
bags.
• Keep your computer away from magnets, activated cellular phones, electrical appliances, or speakers
(more than 13 cm or 5 inches).
• Avoid subjecting your computer to extreme temperatures (below 5°C/41°F or above 35°C/95°F).
• Avoid placing any objects (including paper) between the display and the keyboard or the palm rest.
• Computer display might be designed to be opened and used at a certain angle. Do not open the display
with force. Otherwise, the computer hinge might get damaged.
• Do not turn your computer over when the ac power adapter is plugged in, otherwise, it could break the
adapter plug.
• Before moving your computer, be sure to remove any media, turn off attached devices, and disconnect
cords and cables.
• When picking up your open computer, hold it by the bottom. Do not pick up or hold your computer by the
display.
• Only an authorized Lenovo repair technician should disassemble and repair your computer.
• Do not modify or tape the latches to keep the display open or closed.
• Avoid directly exposing your computer and peripherals to the air from an appliance that can produce
negative ions. Wherever possible, ground your computer to facilitate safe electrostatic discharge.
Appendix A. Important safety information 47
Cleaning your computer
It is a good practice to clean your computer periodically to protect the surfaces and ensure trouble-free
operation.
Cleaning the computer cover: Wipe it with a lint-free cloth dampened in mild soap and water. Avoid
applying liquids directly to the cover.
Cleaning the keyboard: Wipe the keys one by one with a lint-free cloth dampened in mild soap and water. If
you wipe several keys at a time, the cloth might hook onto an adjacent key and possibly damage it. Avoid
spraying cleaner directly onto the keyboard. To remove any crumbs or dust from beneath the keys, you can
use a camera blower with a brush or use cool air from a hair dryer.
Cleaning the computer screen: Scratches, oil, dust, chemicals, and ultraviolet light can affect the
performance of your computer screen. Use a dry, soft lint-free cloth to wipe the screen gently. If you see a
scratchlike mark on your screen, it might be a stain. Wipe or dust the stain gently with a soft, dry cloth. If the
stain remains, moisten a soft, lint-free cloth with water or eyeglass cleaner, but do not apply liquids directly
to your computer screen. Ensure that the computer screen is dry before closing it.
48 Lenovo IdeaPad C340 Series User Guide
Appendix B. Accessibility and ergonomic information
This chapter provides information about accessibility and ergonomics.
Accessibility information
Lenovo is committed to providing users who have hearing, vision, and mobility limitations with greater
access to information and technology. This section provides information about the ways these users can get
the most out of their computer experience. You also can get the most up-to-date accessibility information
from the following Web site:
https://www.lenovo.com/accessibility
Keyboard shortcuts
The following list contains keyboard shortcuts that can help make your computer easier to use.
Note: Depending on your keyboard, some of the following keyboard shortcuts might not be available.
• Windows logo key + U: Open Ease of Access Center
• Right Shift for eight seconds: Turn on or turn off Filter Keys
• Shift five times: Turn on or turn off Sticky Keys
• Left Alt+Left Shift+PrtSn: Turn on or turn off High Contrast
For more information, go to https://windows.microsoft.com/, and then search using any of the following
keywords: keyboard shortcuts, key combinations, shortcut keys.
Ease of Access Center
Ease of Access Center on the Windows operating system enables you to configure your computers to suit
their physical and cognitive needs.
To access Ease of Access Center:
1. Go to Control Panel and view by Category.
2. Click Ease of Access ➙ Ease of Access Center.
3. Choose the appropriate tool by following the on-screen instructions.
Ease of Access Center mainly includes the following tools:
• Magnifier
Magnifier is a useful utility that enlarges the entire screen or part of the screen so that you can see the
items better.
• Narrator
Narrator is a screen reader that reads what is displayed on the screen aloud and describes events such as
error messages.
• On-Screen Keyboard
If you prefer to type or enter data into your computer using a mouse, joystick, or other pointing device
instead of a physical keyboard, you can use On-Screen Keyboard. On-Screen Keyboard displays a visual
keyboard with all the standard keys. You can select keys using the mouse or another pointing device, or
you can tap to select the keys if your computer supports multi-touch screen.
© Copyright Lenovo 2019 49
• High Contrast
High Contrast is a feature that heightens the color contrast of some text and images on your screen. As a
result, those items are more distinct and easier to identify.
• Personalized keyboard
Adjust keyboard settings to make your keyboard easier to use. For example, you can use your keyboard
to control the pointer and make the keyboard easier to type certain key combinations.
• Personalized mouse
Adjust mouse settings to make your mouse easier to use. For example, you can change the pointer
appearance and make your mouse easier to manage windows.
Speech Recognition
Speech Recognition enables you to control your computer by voice.
You can use verbal instructions to control the keyboard and mouse. With verbal instructions, you can start
programs, open menus, click objects on the screen, dictate text into documents, and write and send e-mails.
To use Speech Recognition:
1. Go to Control Panel and view by Category.
2. Click Ease of Access ➙ Speech Recognition.
3. Follow the on-screen instructions.
Screen-reader technologies
Screen-reader technologies are primarily focused on software program interfaces, help systems, and various
online documents. For additional information about screen readers, see the following:
• Using PDFs with screen readers:
https://www.adobe.com/accessibility.html?promoid=DJGVE
• Using the JAWS screen reader:
https://www.freedomscientific.com/Products/Blindness/JAWS
• Using the NVDA screen reader:
https://www.nvaccess.org/
Screen resolution
You can make the text and images on your screen easier to read by adjusting the screen resolution of your
computer.
To adjust the screen resolution:
1. Right-click a blank area on the desktop and then click Display settings ➙ Display.
2. Follow the on-screen instructions.
Note: Setting a resolution too low might prevent some items from fitting on the screen.
Customizable item size
You can make the items on your screen easier to read by changing the item size.
• To change the item size temporarily, use the Magnifier tool in Ease of Access Center.
• To change the item size permanently:
– Change the size of all the items on your screen.
50 Lenovo IdeaPad C340 Series User Guide
1. Right-click a blank area on the desktop and then click Display settings ➙ Display.
2. Change the item size by following the on-screen instructions. For some applications, your
configuration might not take effect until you sign out and then sign in again.
– Change the size of the items on a Web page.
Press and hold Ctrl, and then press the plus-sign key (+) to enlarge or the minus-sign key (–) to reduce
the text size.
– Change the size of the items on the desktop or a window.
Note: This function might not work on some windows.
If your mouse has a wheel, press and hold Ctrl, and then scroll the wheel to change the item size.
Industry-standard connectors
Your computer provides industry-standard connectors that enable you to connect assistive devices.
Documentation in accessible formats
Lenovo provides electronic documentation in accessible formats, such as properly tagged PDF files or
HyperText Markup Language (HTML) files. Lenovo electronic documentation is developed to ensure that
visually impaired users can read the documentation through a screen reader. Each image in the
documentation also includes adequate alternative text so that visually impaired users can understand the
image when they use a screen reader.
Ergonomic information
Good ergonomic practice is important to get the most from your personal computer and to avoid discomfort.
Arrange your workplace and the equipment you use to suit your individual needs and the kind of work that
you perform. In addition, use healthy work habits to maximize your performance and comfort when using
your computer.
Working in the virtual office might mean adapting to frequent changes in your environment. Adapting to the
surrounding light sources, active seating, and the placement of your computer hardware, can help you
improve your performance and achieve greater comfort.
This example shows someone in a conventional setting. Even when not in such a setting, you can follow
many of these tips. Develop good habits, and they will serve you well.
General posture: Make minor modifications in your working posture to deter the onset of discomfort caused
by long periods of working in the same position. Frequent short breaks from your work also help to prevent
minor discomfort associated with your working posture.
Display: Position the display to maintain a comfortable viewing distance of 510 mm to 760 mm (20 inches to
30 inches). Avoid glare or reflections on the display from overhead lighting or outside sources of light. Keep
Appendix B. Accessibility and ergonomic information 51
the display screen clean and set the brightness to levels that enable you to see the screen clearly. Press the
brightness control keys to adjust display brightness.
Head position: Keep your head and neck in a comfortable and neutral (vertical, or upright) position.
Chair: Use a chair that gives you good back support and seat height adjustment. Use chair adjustments to
best suit your comfort posture.
Arm and hand position: If available, use chair arm rests or an area on your working surface to provide
weight support for your arms. Keep your forearms, wrists, and hands in a relaxed and neutral (horizontal)
position. Type with a soft touch without pounding the keys.
Leg position: Keep your thighs parallel to the floor and your feet flat on the floor or on a footrest.
What if you are traveling?
It might not be possible to observe the best ergonomic practices when you are using your computer while on
the move or in a casual setting. Regardless of the setting, try to observe as many of the tips as possible.
Sitting properly and using adequate lighting, for example, helps you maintain desirable levels of comfort and
performance. If your work area is not in an office setting, ensure to take special note of employing active
sitting and taking work breaks. Many product solutions are available to help you modify and expand your
computer to best suit your needs. You can find some of these options at https://www.lenovo.com/accessories.
Explore your options for docking solutions and external products that provide the adjustability and features
that you want.
Questions about vision?
The visual display screens of notebook computers are designed to meet the highest standards. These visual
display screens provide you with clear, crisp images and large, bright displays that are easy to see, yet easy
on the eyes. Any concentrated and sustained visual activity can be tiring. If you have questions on eye
fatigue or visual discomfort, consult a vision-care specialist for advice.
52 Lenovo IdeaPad C340 Series User Guide
Appendix C. Compliance information
This chapter provides regulatory, environmental, RoHS, and ENERGY STAR information about Lenovo
products.
Radio frequency compliance statements
Computer models equipped with wireless communications comply with the radio frequency and safety
standards of any country or region in which it has been approved for wireless use.
Besides this document, ensure that you read the Regulatory Notice for your country or region before using
the wireless devices contained in your computer.
European Union — compliance with the Radio Equipment Directive
This product is in conformity with all the requirements and essential norms that apply to EU Council Radio
Equipment Directive 2014/53/EU on the approximation of the laws of the Member States relating to radio
equipment. The full text of the system EU declaration of conformity and the EU wireless module declarations
are available at the following Internet addresses:
• For notebook computers: https://www.lenovo.com/us/en/social_responsibility/EU_DoC_notebooks
• For tablet computers: https://www.lenovo.com/us/en/social_responsibility/EU_DoC_tablets
• For wireless peripheral devices: https://www.lenovo.com/us/en/social_responsibility/EU_DoC_wireless_
options
Lenovo cannot accept responsibility for any failure to satisfy the protection requirements resulting from a
non-recommended modification of the product, including the installation of option cards from other
manufacturers. This product has been tested and found to comply with the limits for Class B equipment
according to European Standards harmonized in the Directives in compliance. The limits for Class B
equipment were derived for typical residential environments to provide reasonable protection against
interference with licensed communication devices.
Brazil
Este equipamento não tem direito à proteção contra interferência prejudicial e não pode causar interferência
em sistemas devidamente autorizados.
This equipment is not protected against harmful interference and may not cause interference with duly
authorized systems.
Mexico
Advertencia: En Mexico la operación de este equipo está sujeta a las siguientes dos condiciones: (1) es
posible que este equipo o dispositivo no cause interferencia perjudicial y (2) este equipo o dispositivo debe
aceptar cualquier interferencia, incluyendo la que pueda causar su operación no deseada.
© Copyright Lenovo 2019 53
Singapore
Korea
무선설비 전파 혼신 (사용주파수 2400∼2483.5 , 5725∼5825 무선제품해당)
해당 무선설비가 전파혼신 가능성이 있으므로 인명안전과 관련된 서비스는 할 수 없음
SAR 정보
본 장치는 전파 노출에 대한 가이드라인을 충족합니다.
본 장치는 무선 송수신기 입니다. 본 장치는 국제 가이드라인으로 권장되는 전파 노출에 대한 제한을 초과하지
않도록 설계되었습니다. 장치 액세서리 및 최신 부품을 사용할 경우 SAR 값이 달라질 수 있 습니다. SAR 값은
국가 보고 및 테스트 요구 사항과 네트워크 대역에 따라 다를 수 있습니다. 본 장치 는 사람의 신체에서 20mm
이상의 거리에서 사용할 수 있습니다.
Environmental information of countries and regions
This section provides environmental, recycling, and RoHS information about Lenovo products.
Recycling and environmental information
Lenovo encourages owners of information technology (IT) equipment to responsibly recycle their equipment
when it is no longer needed. Lenovo offers a variety of programs and services to assist equipment owners in
recycling their IT products. For information about recycling Lenovo products, go to:
https://www.lenovo.com/recycling
The latest environmental information about our products is available at:
https://www.lenovo.com/ecodeclaration
Important WEEE information
The WEEE marking on Lenovo products applies to countries with WEEE and e-waste regulations (for
example, the European WEEE Directive, India E-Waste Management Rules). Appliances are labeled in
accordance with local regulations concerning waste electrical and electronic equipment (WEEE). These
regulations determine the framework for the return and recycling of used appliances as applicable within
54 Lenovo IdeaPad C340 Series User Guide
each geography. This label is applied to various products to indicate that the product is not to be thrown
away, but rather put in the established collection systems for reclaiming these end of life products.
Users of electrical and electronic equipment (EEE) with the WEEE marking must not dispose of end of life
EEE as unsorted municipal waste, but use the collection framework available to them for the return, recycle,
and recovery of WEEE and to minimize any potential effects of EEE on the environment and human health
due to the presence of hazardous substances. Lenovo electrical and electronic equipment (EEE) may contain
parts and components, which at end-of-life might qualify as hazardous waste.
EEE and waste electrical and electronic equipment (WEEE) can be delivered free of charge to the place of
sale or any distributor that sells electrical and electronic equipment of the same nature and function as the
used EEE or WEEE.
For additional WEEE information, go to:
https://www.lenovo.com/recycling
WEEE information for Hungary
Lenovo, as a producer, bears the cost incurred in connection with the fulfillment of Lenovo’s obligations
under Hungary Law No. 197/2014 (VIII.1.) subsections (1)-(5) of section 12.
Japan recycling statements
Collecting and recycling a disused Lenovo computer or monitor
If you are a company employee and need to dispose of a Lenovo computer or monitor that is the property of
the company, you must do so in accordance with the Law for Promotion of Effective Utilization of Resources.
Computers and monitors are categorized as industrial waste and should be properly disposed of by an
industrial waste disposal contractor certified by a local government. In accordance with the Law for
Promotion of Effective Utilization of Resources, Lenovo Japan provides, through its PC Collecting and
Recycling Services, for the collecting, reuse, and recycling of disused computers and monitors. For details,
visit the Lenovo Web site at:
https://www.lenovo.com/recycling/japan
Pursuant to the Law for Promotion of Effective Utilization of Resources, the collecting and recycling of home-
used computers and monitors by the manufacturer was begun on October 1, 2003. This service is provided
free of charge for home-used computers sold after October 1, 2003. For details, go to:
https://www.lenovo.com/recycling/japan
Disposing of Lenovo computer components
Some Lenovo computer products sold in Japan may have components that contain heavy metals or other
environmental sensitive substances. To properly dispose of disused components, such as a printed circuit
board or drive, use the methods described above for collecting and recycling a disused computer or monitor.
Disposing of disused lithium batteries from Lenovo computers
A button-shaped lithium battery is installed inside your Lenovo computer to provide power to the computer
clock while the computer is off or disconnected from the main power source. If you need to replace it with a
new one, contact your place of purchase or contact Lenovo for service. If you need to dispose of a disused
lithium battery, insulate it with vinyl tape, contact your place of purchase or an industrial-waste-disposal
operator, and follow their instructions.
Disposal of a lithium battery must comply with local ordinances and regulations.
Appendix C. Compliance information 55
Disposing of a disused battery from Lenovo notebook computers
Your Lenovo notebook computer has a lithium ion battery or a nickel metal hydride battery. If you are a
company employee who uses a Lenovo notebook computer and need to dispose of a battery, contact the
proper person in Lenovo sales, service, or marketing, and follow that person's instructions. You also can
refer to the instructions at:
https://www.lenovo.com/jp/ja/environment/recycle/battery/
If you use a Lenovo notebook computer at home and need to dispose of a battery, you must comply with
local ordinances and regulations. You also can refer to the instructions at:
https://www.lenovo.com/jp/ja/environment/recycle/battery/
Recycling information for Brazil
Declarações de Reciclagem no Brasil
Descarte de um Produto Lenovo Fora de Uso
Equipamentos elétricos e eletrônicos não devem ser descartados em lixo comum, mas enviados à pontos de
coleta, autorizados pelo fabricante do produto para que sejam encaminhados e processados por empresas
especializadas no manuseio de resíduos industriais, devidamente certificadas pelos orgãos ambientais, de
acordo com a legislação local.
A Lenovo possui um canal específico para auxiliá-lo no descarte desses produtos. Caso você possua um
produto Lenovo em situação de descarte, ligue para o nosso SAC ou encaminhe um e-mail para:
reciclar@lenovo.com, informando o modelo, número de série e cidade, a fim de enviarmos as instruções
para o correto descarte do seu produto Lenovo.
Battery recycling information for the European Union
Notice: This mark applies only to countries within the European Union (EU).
Batteries or packaging for batteries are labeled in accordance with European Directive 2006/66/EC
concerning batteries and accumulators and waste batteries and accumulators. The Directive determines the
framework for the return and recycling of used batteries and accumulators as applicable throughout the
European Union. This label is applied to various batteries to indicate that the battery is not to be thrown
away, but rather reclaimed upon end of life per this Directive.
In accordance with the European Directive 2006/66/EC, batteries and accumulators are labeled to indicate
that they are to be collected separately and recycled at end of life. The label on the battery may also include
a chemical symbol for the metal concerned in the battery (Pb for lead, Hg for mercury, and Cd for cadmium).
Users of batteries and accumulators must not dispose of batteries and accumulators as unsorted municipal
waste, but use the collection framework available to customers for the return, recycling, and treatment of
batteries and accumulators. Customer participation is important to minimize any potential effects of batteries
56 Lenovo IdeaPad C340 Series User Guide
and accumulators on the environment and human health due to the potential presence of hazardous
substances.
Before placing electrical and electronic equipment (EEE) in the waste collection stream or in waste collection
facilities, the end user of equipment containing batteries and/or accumulators must remove those batteries
and accumulators for separate collection.
Disposing of lithium batteries and battery packs from Lenovo products
A coin-cell type lithium battery might be installed inside your Lenovo product. You can find details about the
battery in the product documentation. If the battery needs to be replaced, contact your place of purchase or
contact Lenovo for service. If you need to dispose of a lithium battery, insulate it with vinyl tape, contact your
place of purchase or a waste-disposal operator, and follow their instructions.
Disposing of battery packs from Lenovo products
Your Lenovo device might contain a lithium-ion battery pack or a nickel metal hydride battery pack. You can
find details on the battery pack in the product documentation. If you need to dispose of a battery pack,
insulate it with vinyl tape, contact Lenovo sales, service, or your place of purchase, or a waste-disposal
operator, and follow their instructions. You also can refer to the instructions provided in the user guide for
your product.
For proper collection and treatment, go to:
https://www.lenovo.com/lenovo/environment
Recycling information for China
Battery recycling information for Taiwan
Battery recycling information for the United States and Canada
Restriction of Hazardous Substances (RoHS) Directive of countries and
regions
The latest environmental information about Lenovo products is available at:
Appendix C. Compliance information 57
https://www.lenovo.com/ecodeclaration
European Union RoHS
This Lenovo product, with included parts (cables, cords, and so on) meets the requirements of Directive
2011/65/EU on the restriction of the use of certain hazardous substances in electrical and electronic
equipment ("RoHS recast" or "RoHS 2").
For more information about Lenovo worldwide compliance on RoHS, go to:
https://www.lenovo.com/rohs-communication
Turkish RoHS
The Lenovo product meets the requirements of the Republic of Turkey Directive on the Restriction of the Use
of Certain Hazardous Substances in Waste Electrical and Electronic Equipment (WEEE).
Ukraine RoHS
India RoHS
RoHS compliant as per E-Waste (Management) Rules.
China RoHS
The information in the following table is applicable to products manufactured on or after January 1, 2015 for
sale in the People’s Republic of China.
58 Lenovo IdeaPad C340 Series User Guide
Taiwan RoHS
Electromagnetic emission notices
Federal Communications Commission (FCC) Supplier’s Declaration of
Conformity
The following information refers to Lenovo IdeaPad C340-14IML, Lenovo IdeaPad C340-15IML, and Lenovo
IdeaPad C340-15IIL, machine type(s): 81TK, 81XN (for Brazil), 81TL, and 81XJ.
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to
Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful
60 Lenovo IdeaPad C340 Series User Guide
interference in a residential installation. This equipment generates, uses, and can radiate radio frequency
energy and, if not installed and used in accordance with the instructions, may cause harmful interference to
radio communications. However, there is no guarantee that interference will not occur in a particular
installation. If this equipment does cause harmful interference to radio or television reception, which can be
determined by turning the equipment off and on, the user is encouraged to try to correct the interference by
one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
• Consult an authorized dealer or service representative for help.
Lenovo is not responsible for any radio or television interference caused by using other than recommended
cables and connectors or by unauthorized changes or modifications to this equipment. Unauthorized
changes or modifications could void the user’s authority to operate the equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1)
this device may not cause harmful interference, and (2) this device must accept any interference received,
including interference that may cause undesired operation.
Responsible Party:
Lenovo (United States) Incorporated
7001 Development Drive
Morrisville, NC 27560
Email: FCC@lenovo.com
Industry Canada compliance statement
CAN ICES-3(B)/NMB-3(B)
European Union conformity
EU Contact: Lenovo (Slovakia), Landererova 12, 811 09 Bratislava, Slovakia
Compliance with the EMC Directive
This product is in conformity with the protection requirements of EU Council Directive 2014/30/EU on the
approximation of the laws of the Member States relating to electromagnetic compatibility.
This product has been tested and found to comply with the limits for Class B equipment according to
European Standards harmonized in the Directives in compliance. The Class B requirements for equipment
are intended to offer adequate protection to broadcast services within residential environments.
EU ErP (EcoDesign) Directive (2009/125/EC) - external power adapters (Regulation (EU) 2019/1782)
Lenovo products are designed to work with a range of compatible power adapters. Access https://
www.lenovo.com/us/en/compliance/eu-doc to view the compatible power adapters. For the detailed power
adapter specifications for your computer, go to https://support.lenovo.com.
Appendix C. Compliance information 61
German Class B compliance statement
Hinweis zur Einhaltung der Klasse B zur elektromagnetischen Verträglichkeit
Dieses Produkt entspricht den Schutzanforderungen der EU-Richtlinie zur elektromagnetischen
Verträglichkeit Angleichung der Rechtsvorschriften über die elektromagnetische Verträglichkeit in den EU-
Mitgliedsstaaten und hält die Grenzwerte der Klasse B der Norm gemäß Richtlinie.
Um dieses sicherzustellen, sind die Geräte wie in den Handbüchern beschrieben zu installieren und zu
betreiben. Des Weiteren dürfen auch nur von der Lenovo empfohlene Kabel angeschlossen werden. Lenovo
übernimmt keine Verantwortung für die Einhaltung der Schutzanforderungen, wenn das Produkt ohne
Zustimmung der Lenovo verändert bzw. wenn Erweiterungskomponenten von Fremdherstellern ohne
Empfehlung der Lenovo gesteckt/eingebaut werden.
Zulassungsbescheinigung laut dem Deutschen Gesetz über die elektromagnetische Verträglichkeit von
Betriebsmitteln, EMVG vom 20. Juli 2007 (früher Gesetz über die elektromagnetische Verträglichkeit von
Geräten), bzw. der EU Richtlinie 2014/30/EU, der EU Richtlinie 2014/53/EU Artikel 3.1b), für Geräte der
Klasse B.
Dieses Gerät ist berechtigt, in Übereinstimmung mit dem Deutschen EMVG das EG-Konformitätszeichen -
CE - zu führen. Verantwortlich für die Konformitätserklärung nach Paragraf 5 des EMVG ist die Lenovo
(Deutschland) GmbH, Meitnerstr. 9, D-70563 Stuttgart.
Japan VCCI Class B compliance statement
Japan compliance statement for products which connect to the power
mains with rated current less than or equal to 20 A per phase
Japan notice for ac power cord
The ac power cord shipped with your product can be used only for this specific product. Do not use the ac
power cord for other devices.
Other compliance information
This section provides other compliance information about Lenovo products.
TCO certification
To obtain the TCO certification information for your computer, go to:
https://www.lenovo.com/tco-cert
62 Lenovo IdeaPad C340 Series User Guide
Export classification notice
This product is subject to the United States Export Administration Regulations (EAR) and has an Export
Classification Control Number (ECCN) of 5A992.c. It can be re-exported except to any of the embargoed
countries in the EAR E1 country list.
Lenovo product service information for Taiwan
Taiwan precautionary vision statement
警語：使用過度恐傷害視力
注意事項：
• 使用30分鐘請休息10分鐘。
• 2歲以下幼兒不看螢幕，2歲以上每天看螢幕不要超過1小時。
Eurasian compliance mark
Brazil audio notice
Ouvir sons com mais de 85 decibéis por longos períodos pode provocar danos ao sistema auditivo.
ENERGY STAR
ENERGY STAR is a joint program of the U.S. Environmental Protection Agency and the U.S. Department of
Energy aimed at saving money and protecting the environment through energy efficient products and
practices.
Lenovo is proud to offer products with the ENERGY STAR certified designation. Lenovo computers, if carry
an ENERGY STAR mark, have been designed and tested to conform to the ENERGY STAR program
requirements for computers as prescribed by the U.S. Environmental Protection Agency. For certified
computers, an ENERGY STAR mark may be affixed to the product, the product packaging, or displayed
electronically on the E-label screen or the power settings interface.
By using ENERGY STAR compliant products and taking advantage of the power management features of
your computer, you reduce the consumption of electricity. Reduced electrical consumption contributes to
potential financial savings, a cleaner environment, and the reduction of greenhouse gas emissions. For more
information about ENERGY STAR, go to https://www.energystar.gov
Appendix C. Compliance information 63
Lenovo encourages you to make efficient use of energy an integral part of your day-to-day operations. To
help in this endeavor, Lenovo has preset the following power-management features to take effect when your
computer has been inactive for a specified length of time.
Table 2. Balanced (when plugged into ac power)
• Turn off the display: After 10 minutes
• Put the computer to sleep: After 10 minutes
64 Lenovo IdeaPad C340 Series User Guide
Appendix D. Notices and trademarks
Notices
Lenovo may not offer the products, services, or features discussed in this document in all countries. Consult
your local Lenovo representative for information on the products and services currently available in your
area. Any reference to a Lenovo product, program, or service is not intended to state or imply that only that
Lenovo product, program, or service may be used. Any functionally equivalent product, program, or service
that does not infringe any Lenovo intellectual property right may be used instead. However, it is the user's
responsibility to evaluate and verify the operation of any other product, program, or service.
Lenovo may have patents or pending patent programs covering subject matter described in this document.
The furnishing of this document does not give you any license to these patents. You can send license
inquiries, in writing, to:
Lenovo (United States), Inc.
1009 Think Place - Building One
Morrisville, NC 27560
U.S.A.
Attention: Lenovo Director of Licensing
LENOVO PROVIDES THIS PUBLICATION "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS
OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF NON-INFRINGEMENT,
MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow
disclaimer of express or implied warranties in certain transactions, therefore, this statement may not apply to
you.
Changes are made periodically to the information herein; these changes will be incorporated in new editions
of the publication. To provide better service, Lenovo reserves the right to improve and/or modify the
products and software programs described in the manuals included with your computer, and the content of
the manual, at any time without additional notice.
The software interface and function and hardware configuration described in the manuals included with your
computer might not match exactly the actual configuration of the computer that you purchase. For the
configuration of the product, refer to the related contract (if any) or product packing list, or consult the
distributor for the product sales. Lenovo may use or distribute any of the information you supply in any way it
believes appropriate without incurring any obligation to you.
The products described in this document are not intended for use in implantation or other life support
applications where malfunction may result in injury or death to persons. The information contained in this
document does not affect or change Lenovo product specifications or warranties. Nothing in this document
shall operate as an express or implied license or indemnity under the intellectual property rights of Lenovo or
third parties. All information contained in this document was obtained in specific environments and is
presented as an illustration. The result obtained in other operating environments may vary.
Lenovo may use or distribute any of the information you supply in any way it believes appropriate without
incurring any obligation to you.
Any references in this publication to non-Lenovo Web sites are provided for convenience only and do not in
any manner serve as an endorsement of those Web sites. The materials at those Web sites are not part of the
materials for this Lenovo product, and use of those Web sites is at your own risk.
© Copyright Lenovo 2019 65
Any performance data contained herein was determined in a controlled environment. Therefore, the result
obtained in other operating environments may vary significantly. Some measurements may have been made
on development-level systems and there is no guarantee that these measurements will be the same on
generally available systems. Furthermore, some measurements may have been estimated through
extrapolation. Actual results may vary. Users of this document should verify the applicable data for their
specific environment.
This document is copyrighted by Lenovo and is not covered by any open source license, including any Linux
agreement(s) which may accompany software included with this product. Lenovo may update this document
at any time without notice.
For the latest information or any questions or comments, contact or visit the Lenovo Web site:
https://support.lenovo.com
Trademarks
LENOVO and the LENOVO logo are trademarks of Lenovo. Microsoft, Windows, Direct3D, and Cortana are
trademarks of the Microsoft group of companies. The terms HDMI and HDMI High-Definition Multimedia
Interface are trademarks or registered trademarks of HDMI Licensing LLC in the United States and other
countries. Wi-Fi and Miracast are registered trademarks of Wi-Fi Alliance. USB-C is a trademark of USB
Implementers Forum. All other trademarks are the property of their respective owners. © 2019 Lenovo.
66 Lenovo IdeaPad C340 Series User Guide