About this documentation
Chapter 1. Meet your computer
Chapter 2. Get started with your computer
Chapter 3. Explore your computer
Chapter 4. Help and support
Appendix A. Important safety information
Appendix B. Accessibility and ergonomic information
Appendix C. Compliance information
Appendix D. Notices and trademarks

Lenovo 740-15IML User Manual

Displayed below is the user manual for 740-15IML by Lenovo which is a product in the Notebooks category. This manual has pages.

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Lenovo Yoga C740 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 39

• Safety and Warranty Guide

• Setup Guide

First Edition (August 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 . . . . . . . . . . . . . . . . . . . . 4

Right . . . . . . . . . . . . . . . . . . . . 8

Bottom . . . . . . . . . . . . . . . . . . 10

Features and specifications . . . . . . . . . . 12

Statement on USB transfer rate . . . . . . . 13

Operating environment . . . . . . . . . . 13

Chapter 2. Get started with your

computer . . . . . . . . . . . . . . . . 15

Get started with Windows 10 . . . . . . . . . 15

Windows account . . . . . . . . . . . . 15

Windows user interface . . . . . . . . . . 17

Lenovo Vantage and Lenovo PC Manager . . . . 18

Connect to Wi-Fi networks . . . . . . . . . . 18

Forget a Wi-Fi network . . . . . . . . . . 18

Turn on or off airplane mode . . . . . . . . 18

Interact with your computer . . . . . . . . . . 19

YOGA modes . . . . . . . . . . . . . . 19

Multi-touch gestures . . . . . . . . . . . 20

Lenovo Digital Pen . . . . . . . . . . . . 23

Keyboard hotkeys . . . . . . . . . . . . 25

Chapter 3. Explore your computer . . 27

Manage power . . . . . . . . . . . . . . . 27

Check the battery status . . . . . . . . . 27

Charge the battery . . . . . . . . . . . . 27

Check the battery temperature . . . . . . . 28

Set power button behavior. . . . . . . . . 28

Change or create a power plan . . . . . . . 28

Set performance mode . . . . . . . . . . 28

Change settings in UEFI/BIOS setup utility . . . . 28

What is UEFI/BIOS setup utility . . . . . . . 28

Open the UEFI/BIOS setup utility . . . . . . 29

Change startup sequence . . . . . . . . . 29

Change hotkey mode. . . . . . . . . . . 29

Enable or disable always-on . . . . . . . . 29

Set passwords in UEFI/BIOS setup utility . . . . . 29

Password types . . . . . . . . . . . . . 29

Set administrator password . . . . . . . . 30

Change or remove administrator password . . 30

Set user password . . . . . . . . . . . . 31

Enable power-on password . . . . . . . . 31

Set hard disk password . . . . . . . . . . 31

Change or remove hard disk password . . . . 31

Reset or restore Windows . . . . . . . . . . . 32

Windows 10 recovery options . . . . . . . 32

Windows System Restore . . . . . . . . . 32

Reset Windows . . . . . . . . . . . . . 33

Create a recovery drive . . . . . . . . . . 33

Use a recovery drive to restore or reset

Windows . . . . . . . . . . . . . . . 33

Chapter 4. Help and support . . . . . 35

Frequently asked questions . . . . . . . . . . 35

Self-help resources . . . . . . . . . . . . . 35

Call Lenovo . . . . . . . . . . . . . . . . 37

Before you contact Lenovo . . . . . . . . 37

Lenovo Customer Support Center . . . . . . 37

Purchase additional services. . . . . . . . . . 38

Appendix A. Important safety

information . . . . . . . . . . . . . . . 39

Appendix B. Accessibility and

ergonomic information . . . . . . . . 51

Appendix C. Compliance

information . . . . . . . . . . . . . . . 55

Appendix D. Notices and

trademarks . . . . . . . . . . . . . . . 69

ii Lenovo Yoga C740 Series User Guide

About this documentation

• Illustrations in this documentation might look different from your product.

• 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.

• This documentation applies to the following product models:

Model Name Machine Type

Lenovo Yoga C740-14IML 81TC

Lenovo Yoga C740-15IML 81TD

iv Lenovo Yoga C740 Series User Guide

Chapter 1. Meet your computer

Front

1. Microphones Capture or record sound and voice.

2. Camera Take pictures or record videos by clicking Camera from the Start

menu.

Note: 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. Camera cover slider Move the slider to cover or uncover the camera lens.

Note: The camera cover helps you better 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 and supports multi-touch

function. See “Multi-touch gestures” on page 20.

Base

C740-14IML

1. Speakers Produce sound.

2. Keyboard Enter characters and interact with programs.

Note: The keyboard also includes hotkeys and function keys for

changing settings and performing tasks quickly.

3. Fingerprint reader Enroll and read your fingerprint for user authentication.

4. Touchpad Perform finger touch and all the functions of a traditional mouse.

Note: The touchpad also supports multi-touch function.

2Lenovo Yoga C740 Series User Guide

C740-15IML

1. Keyboard Enter characters and interact with programs.

Note: The keyboard also includes hotkeys and function keys for

changing settings and performing tasks quickly.

2. Numeric keypad To enable or disable the numeric keypad, press the Num Lock key.

Note: If the Num Lock light is on, the numeric keypad is in use.

3. Fingerprint reader Enroll and read your fingerprint for user authentication.

4. Touchpad Perform finger touch and all the functions of a traditional mouse.

Note: The touchpad also supports multi-touch function.

Chapter 1.Meet your computer 3

Left

C740-14IML

1. Power connector / USB Type-CTM

connector (USB 3.1 Gen 1) • Connect to ac power with the included power cord and ac power

adapter.

• When not connected with the ac power adapter, it acts as a USB

Type-C connector. For more information about this connector, see

USB Type-C connector (USB 3.1 Gen 1).

Note: An appropriate USB Type-C cable is required for connecting

external devices.

2. Charging status indicator Indicate whether the computer is connected to ac power.

• Solid white: connected to ac power; battery capacity 91% – 100%

• Solid amber: connected to ac power; battery capacity 1% – 90%

• Off: not connected to ac power

4Lenovo Yoga C740 Series User Guide

3. USB Type-C connector (USB 3.1 Gen 1) • Charge your computer.

• Charge USB Type-C compatible devices with the output voltage

and current of 5 V and 3 A.

• Transfer data at USB 3.1 speed, up to 5 Gbps.

• Connect to an external display:

– USB Type-C to VGA: Maximum 1900 x 1200 pixels, 60 Hz

– USB Type-C to DP: Maximum 3840 x 2160 pixels, 60 Hz

– USB Type-C to HDMI: Maximum 3840 x 2160 pixels, 60 Hz

• Supply power to another computer using P-to-P (Peer to Peer) 2.0

charging function. See “Use P-to-P 2.0 charging function” on page

27.

• Connect to USB Type-C accessories to help expand your

computer functionality. To purchase USB Type-C accessories, go

to https://www.lenovo.com/accessories.

Note: When the battery power is below 10%, the connected USB

Type-C accessories might not work correctly.

4. Audio connector Connect headphones or headsets with a 3.5-mm (0.14-inch), 4-pole

plug.

Note: This jack does not support standalone external microphones. If

you use headsets, choose one with a single plug.

Chapter 1.Meet your computer 5

C740-15IML

1. Power connector / USB Type-C connector

(USB 3.1 Gen 1) • Connect to ac power with the included power cord and ac power

adapter.

• When not connected with the ac power adapter, it acts as a USB

Type-C connector. For more information about this connector, see

USB Type-C connector (USB 3.1 Gen 1).

Note: An appropriate USB Type-C cable is required for connecting

external devices.

2. Charging status indicator Indicate whether the computer is connected to ac power.

• Solid white: connected to ac power; battery capacity 91% – 100%

• Solid amber: connected to ac power; battery capacity 1% – 90%

• Off: not connected to ac power

6Lenovo Yoga C740 Series User Guide

3. USB Type-C connector (USB 3.1 Gen 1) • Charge your computer.

• Charge USB Type-C compatible devices with the output voltage

and current of 5 V and 3 A.

• Transfer data at USB 3.1 speed, up to 5 Gbps.

• Connect to an external display:

– USB Type-C to VGA: Maximum 1900 x 1200 pixels, 60 Hz

– USB Type-C to DP: Maximum 3840 x 2160 pixels, 60 Hz

– USB Type-C to HDMI: Maximum 3840 x 2160 pixels, 60 Hz

• Supply power to another computer using P-to-P (Peer to Peer) 2.0

charging function. See “Use P-to-P 2.0 charging function” on page

27.

• Connect to USB Type-C accessories to help expand your

computer functionality. To purchase USB Type-C accessories, go

to https://www.lenovo.com/accessories.

Note: When the battery power is below 10%, the connected USB

Type-C accessories might not work correctly.

4. Audio connector Connect headphones or headsets with a 3.5-mm (0.14-inch), 4-pole

plug.

Note: This jack does not support standalone external microphones. If

you use headsets, choose one with a single plug.

Chapter 1.Meet your computer 7

Right

C740-14IML

1. Always On USB Type-A connector (USB

3.1 Gen 1) • Connect USB-compatible devices, such as a USB keyboard, USB

mouse, USB storage device, or USB printer.

• Charge external devices when the computer is turned off, in sleep

or hibernation mode.

Note: The always-on function can be turned on or off in one or more

of the following software:

Lenovo Vantage

Lenovo PC Manager

UEFI/BIOS Setup utility

2. Power button (with power indicator) 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 on 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.

8Lenovo Yoga C740 Series User Guide

C740-15IML

1. USB Type-A connector (USB 3.1 Gen 1) Connect USB-compatible devices, such as a USB keyboard, USB

mouse, USB storage device, or USB printer.

2. Always On USB Type-A connector (USB

3.1 Gen 1) • Connect USB-compatible devices, such as a USB keyboard, USB

mouse, USB storage device, or USB printer.

• Charge external devices when the computer is turned off, in sleep

or hibernation mode.

Note: The always-on function can be turned on or off in one or more

of the following software:

Lenovo Vantage

Lenovo PC Manager

UEFI/BIOS Setup utility

3. Power button (with power indicator) 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 on 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.

Chapter 1.Meet your computer 9

Bottom

C740-14IML

1. 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.

2. Ventilation slots Dissipate heat.

10 Lenovo Yoga C740 Series User Guide

C740-15IML

1. 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.

2. Ventilation slots Dissipate heat.

3. Speakers Produce sound.

Chapter 1.Meet your computer 11

Features and specifications

Dimensions C740-14IML

• Width: 321.8 mm (12.67 inches)

• Depth: 214.6 mm (8.44 inches)

• Thickness:

– Front: 14.9 mm (0.58 inches)

– Rear: 16.9 mm (0.67 inches)

C740-15IML

• Width: 357.8 mm (14.08 inches)

• Depth: 235.35 mm (9.27 inches)

• Thickness:

– Front: 16.02 mm (0.63 inches)

– Rear: 18.25 mm (0.72 inches)

ac power adapter 100 V to 240 V ac, 50 Hz to 60 Hz

Battery pack C740-14IML

• 51 Wh

• 4 cells

C740-15IML

• 60.3 Wh

• 3 cells

Microprocessor To view the microprocessor information of your computer, right-click

the Start button and then select System.

Memory • Type: double data rate 4 (DDR4) SDRAM

• Capacity: 8GB / 12GB / 16GB

Storage device • Type: solid-state drive

• Form factor: M.2

• Bus: PCI Express

• Capacity: 256GB / 512GB / 1TB

Screen C740-14IML

• Display size: 355.6 mm (14 inches)

• Display resolution: 1920 x 1080 pixels

C740-15IML

• Display size: 396.2 mm (15.6 inches)

• Display resolution: 1920 x 1080 pixels / 1920 x 1080 pixels HDR

Keyboard • Hotkeys

• Keyboard backlight

• Numeric keypad*

12 Lenovo Yoga C740 Series User Guide

Connectors and slots • Audio connector

C740-14IML

• Always On USB Type-A connector (USB 3.1 Gen 1)

• Two USB Type-C connectors (USB 3.1 Gen 1)

C740-15IML

• Two USB Type-A connectors (USB 3.1 Gen 1) (including one

Always On USB)

• Two USB Type-C connectors (USB 3.1 Gen 1)

Wireless features • Bluetooth

• Wireless LAN

Others • Camera

• Microphones

• Stereo speakers

• Novo button

* 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

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)

Chapter 1.Meet your computer 13

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)

14 Lenovo Yoga C740 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

You must create at least one account to use the Windows operating system. It can be either a local account

or a Microsoft account.

Local accounts

A local account is created on a particular Windows-enabled device and it can only be used on that device. It

is recommended that you set a password for each local account to prevent unauthorized access to the

device.

Microsoft accounts

A Microsoft account is a user account that you use to sign in to Microsoft software and services. If you use

Microsoft services like OneDrive, Outlook.com, Xbox Live, Office 365, and Skype, you might already have

one. If you don't have it, you can create one for free.

There are two main benefits of using a Microsoft account:

• Sign in only once. If you use a Microsoft account to sign in to Windows 10, you don’t need to sign in again

to use OneDrive, Skype, Outlook.com, and other Microsoft services.

• Settings can be synced. If you use your Microsoft account to sign in to multiple Windows-enabled

devices, certain Windows settings can be synced among the devices.

Switch between a local and a Microsoft account

If you are using a local account to sign in to Windows 10, you can switch to use a Microsoft account instead.

Step 1. Open the Start menu and select Settings ➙ Accounts.

Step 2. Select Sign in with a Microsoft account instead.

Step 3. If you already have a Microsoft account, enter the account name and password to sign in.

Otherwise, select Create one to create a new Microsoft account.

Note: The device must have Internet access the first time you use a Microsoft account on that

device.

If you want to switch back to use a local account, open the Start menu and select Settings ➙ Accounts ➙

Add additional user accounts

Your user account must be of the “Administrator” type to add additional user accounts to Windows.

Add additional user accounts if you need to share your computer with family members or other people.

Step 1. Open the Start menu and select Settings ➙ Accounts ➙ Family & other users.

Step 2. Select either Add a family member or Add someone else to this PC.

Note: By default, you are prompted to add Microsoft accounts. If you don’t know the person’s

Microsoft account, select I don’t have this person’s sign-in information. Follow on-screen

instructions to create a Microsoft account for the person. Alternatively, select Add a user without a

Microsoft account to create a local account for the person.

Enroll your fingerprint

If your computer includes a fingerprint reader, you can enroll your fingerprint for Windows sign-in.

Step 1. Open the Start menu and select Settings ➙ Accounts ➙ Sign-in options.

Note: If you are using a local account, the account must be password protected. Otherwise, you

cannot enroll fingerprints.

Step 2. Under Fingerprint, select Set up ➙ Get started.

Step 3. Follow on-screen instructions to complete enrollment. Create a PIN when prompted, in case your

fingerprint cannot be recognized at Windows sign-in.

Note: You can enroll more than one fingerprint.

16 Lenovo Yoga C740 Series User Guide

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 mode.

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.

Chapter 2.Get started with your computer 17

Launch an app

• Open the Start menu and select the app you want to launch.

• Use Windows Search.

Lenovo Vantage and Lenovo PC Manager

Lenovo Vantage and Lenovo PC Manager is software developed by Lenovo. Using the software, you can:

• View product information

• View warranty and support information

• Run hardware scan and diagnose problems

• Change hardware settings

• Update Windows, drivers, and UEFI/BIOS

Lenovo Vantage or PC Manager may be pre-installed on your computer. To open it, enter the software name

in Windows Search and select the matched result.

Note: If Lenovo Vantage is not pre-installed, you can download it from Microsoft Store.

Connect to Wi-Fi networks

If your computer includes a wireless adapter, you can connect your computer to Wi-Fi networks.

Step 1. Click the network icon in the Windows notification area. A list of nearby networks is displayed.

Note: If no network is displayed, check whether the airplane mode is turned on.

Step 2. Select a network and click Connect. Provide security key if prompted.

Note: The network key is usually managed by the network administrator.

Forget a Wi-Fi network

Windows saves a list of Wi-Fi networks you have connected to, along with their passwords and other

settings. By doing this, your computer is automatically connected when it is in the range of a previously

connected network. However, if the network password has been changed, you need to forget the network in

order to enter the new password.

Step 1. Select Start ➙ Settings ➙ Network & Internet ➙ Wi-Fi.

Step 2. Click Manage known networks.

Step 3. Click the network name and click Forget.

Turn on or off airplane mode

Airplane mode is a convenient setting to turn on or off all wireless communication of your computer. You may

need to turn it on when boarding an airplane.

Step 1. Click the notification icon in the Windows notification area.

Step 2. Click the airplane mode icon to turn it on or off.

Note: Click Expand if you cannot find the airplane mode icon.

18 Lenovo Yoga C740 Series User Guide

Interact with your computer

YOGA modes

The display panel can be opened to any angle, up to 360 degrees. The orientation of the contents of your

display changes automatically when you rotate the display to a different angle. To prevent automatic

orientation, you can turn on the Rotation lock located in the action center.

Attention:

• Do not open the display with too much force, as this can damage the panel or hinges.

• When closing the display panel, be careful not to leave pens or any other objects between the display

panel and the keyboard, as this can damage the display panel.

You can switch your display into one of four YOGA modes by rotating the display to a different angle.

Chapter 2.Get started with your computer 19

Notebook mode

Suitable for tasks that require a keyboard and mouse (such as creating

documents, writing emails, and more).

Stand mode

Suitable for tasks that require little or no touch (such as viewing photos or playing

videos).

Tent mode

Suitable for tasks that require limited interaction with the touch screen (such as

displaying graphs or PowerPoint presentations).

Tablet mode

Suitable for tasks that require frequently touching the screen (such as surfing the

web, playing games, and more).

Notes:

• The keyboard and touch pad are automatically disabled in Stand mode, Tent mode, and Tablet mode. You

can use the multi-touch screen to operate your computer instead.

• Automatic orientation is not available in Notebook mode.

Multi-touch gestures

If your computer display supports multi-touch function, you can navigate the screen with simple touch

gestures.

Note: Not all gestures are available on all apps.

20 Lenovo Yoga C740 Series User Guide

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.

Drag an item to the location you want

Move an object.

Chapter 2.Get started with your computer 21

Move two fingers closer together

Zoom out.

Move two fingers farther apart

Zoom in.

Swipe in from the right edge

Open the action center to see your notifications and quick actions.

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.

22 Lenovo Yoga C740 Series User Guide

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 Top button

2 Bottom button

You can perform the following operations with the Lenovo Digital Pen:

Chapter 2.Get started with your computer 23

Tap once

Click or make a selection.

Tap twice quickly

Open an app or item from the desktop.

Tap and hold

Right-click

Hold the Top button 1 and tap the screen

Right-click.

Hold the Bottom button 2 and tap the screen

Erase ink in supported applications.

Pen settings

You can change the pen related settings in Lenovo Pen Settings.

Step 1. In Windows 10 search box, type Lenovo Pen Settings.

Step 2. Enter Lenovo Pen Settings window and change.

24 Lenovo Yoga C740 Series User Guide

Keyboard 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 sound.

Decreases system volume.

Increases system volume.

Enables/Disables the integrated microphone.

Reloads Web pages or refreshes the screen.

Enables/Disables the touchpad.

Turns on/off airplane mode.

Enables/Disables the integrated camera.

Locks the screen.

Switches display devices.

Increases screen brightness.

Decreases screen brightness.

Turns on/off or adjusts the brightness of the keyboard backlight.

Note: This hotkey must be used with the Fn key.

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 25

26 Lenovo Yoga C740 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

Use ac power

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 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%.

Use P-to-P 2.0 charging function

Both the USB Type-C connector (USB 3.1 Gen 1) and the Thunderbolt™ 3 connector (USB Type-C) on the

computer feature the Lenovo-unique P-to-P 2.0 charging function, which enables one computer (A) to supply

power to another computer (B) through a USB Type-C to USB Type-C cable when no ac power is available.

To use the function, ensure that:

• The selected connectors support the P-to-P 2.0 charging function and power delivery function.

• The remaining battery power of computer A is at least 30% and is 3% higher than that of computer B.

Once the remaining power of computer A is lower than 30%, it stops supplying power to computer B. To

check the battery status, see “Check the battery status” on page 27.

Check the battery temperature

You can check the battery temperature in Lenovo Vantage or Lenovo PC manager.

Step 1. Open Lenovo Vantage.

Step 2. Click Hardware Settings ➙ Power.

Step 3. Locate the Power Status section and then click Show Details to view the battery temperature.

Note: If you’re using Lenovo PC Manager, select System hardware ➙ Battery.

Set power button behavior

By default, pressing the power button puts the computer to sleep mode. However, you can change the

power button behavior in Windows Control Panel.

Step 1. Right-click the battery status icon in the Windows notification area.

Step 2. Select Power Options ➙ Choose what the power buttons do.

Change or create a power plan

A power plan is a set of power saving settings. You can choose a pre-defined power plan or you can create

your own plans.

Step 1. Right-click the battery status icon in the Windows notification area.

Step 2. Select Power Options ➙ Change plan settings.

Set performance mode

You can press Fn+Q to manually set the computer’s performance mode.

Performance mode Description

Intelligent The software monitors what programs are running and automatically adjusts the

operating frequency of the processing unit.

Quiet The computer’s processing unit does not operate at its highest frequency.

Performance The computer’s processing unit operates at its highest frequency.

Change settings in UEFI/BIOS setup utility

This section introduces what is UEFI/BIOS and the operations you can perform in its setup utility.

What is UEFI/BIOS setup utility

UEFI/BIOS is the first program that runs when a computer starts. UEFI/BIOS initializes hardware components

and loads the operating system and other programs. Your computer may include a setup program (setup

utility) with which you can change certain UEFI/BIOS settings.

28 Lenovo Yoga C740 Series User Guide

Open the UEFI/BIOS setup utility

Step 1. Turn on or restart the computer.

Step 2. When the Lenovo logo appears on the screen, press F2 repeatedly.

Note: For computers with hotkey mode enabled, press Fn + F2.

Change startup sequence

You may need to change startup sequence to allow the computer to start from another device or a network

location.

Step 1. Open the UEFI/BIOS setup utility.

Step 2. Navigate to the Boot menu.

Step 3. Follow on-screen instructions to change the order of devices under Boot Priority Order.

Note: You can also change startup sequence temporarily without opening the setup utility. To do so, start

the computer. When the Lenovo logo appears, press F12 (or Fn + F12) repeatedly.

Change hotkey mode

Step 1. Open the UEFI/BIOS setup utility.

Step 2. Select Configuration ➙ Hotkey Mode and press Enter.

Step 3. Change the setting to Disabled or Enabled.

Step 4. Select Exit ➙ Exit Saving Changes.

Enable or disable always-on

For some Lenovo computers with always-on connectors, the always-on function can be enabled or disabled

in the UEFI/BIOS setup utility.

Step 1. Open the UEFI/BIOS setup utility.

Step 2. Select Configuration ➙ Always On USB and press Enter.

Step 3. Change the setting to Disabled or Enabled.

Step 4. Select Exit ➙ Exit Saving Changes.

Note: If Lenovo Vantage or Lenovo PC Manager (software) is pre-installed on your computer, you may also

enable or disable always-on in the software.

Set passwords in UEFI/BIOS setup utility

This section introduces the types of passwords that you can set in the UEFI (Unified Extensible Firmware

Interface) or BIOS (Basic Input/Output System) setup utility.

Password types

You can set various types of passwords in the UEFI/BIOS setup utility.

Chapter 3.Explore your computer 29

Password type Pre-requisite Usage

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 to have the system

board replaced. Proof of purchase is required and a fee will be charged for parts and service.

Step 1. Open the UEFI/BIOS setup utility.

Step 2. Select Security ➙ Set Administrator Password and press Enter.

Step 3. Enter a password string that contains only letters and numbers and then press Enter

Step 4. Enter the password again and press Enter.

Step 5. Select Exit ➙ Exit Saving Changes.

Next time you start the computer, you must enter the administrator password to open 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.

Step 1. Open the UEFI/BIOS setup utility using the administrator password.

Step 2. Select Security ➙ Set Administrator Password and press Enter.

Step 3. Enter the current password.

Step 4. In the Enter New Password text box, enter the new password.

Step 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 without entering any

character.

Step 6. Select Exit ➙ Exit Saving Changes.

If you remove the administrator password, the user password is also removed.

30 Lenovo Yoga C740 Series User Guide

Set user password

You must set the administrator password before you can set the user password.

The administrator of the setup utility might need to set a user password for use by others.

Step 1. Open the UEFI/BIOS setup utility using the administrator password.

Step 2. Select Security ➙ Set User Password and press Enter.

Step 3. Enter a password string that contains only letters and numbers and then press Enter. The user

password must be different from the administrator password.

Step 4. Enter the password again and press Enter.

Step 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.

Step 1. Open the UEFI/BIOS setup utility.

Step 2. Select Security ➙ Power on Password and press Enter.

Note: The administrator password must be set in advance.

Step 3. Change the setting to Enabled.

Step 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 to have the hard disk drive replaced.

Proof of purchase is required and a fee will be charged for parts and service.

Step 1. Open the UEFI/BIOS setup utility.

Step 2. Select Security ➙ Set Hard Disk Password and press Enter.

Note: If you start the setup utility using the user password, you cannot set hard disk password.

Step 3. Follow on-screen instructions to set both master and user passwords.

Note: The master and user hard disk passwords must be set at the same time.

Step 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

Step 1. Open the UEFI/BIOS setup utility.

Step 2. Select Security.

Step 3. Change or remove the hard disk password.

Chapter 3.Explore your computer 31

To change or remove master password, select Change Master Password and press Enter.

Note: If you remove the master hard disk password, the user hard disk password is also removed.

To change user password, select Change User Password and press Enter.

Note: The user hard disk password cannot be removed separately.

Step 4. Select Exit ➙ Exit Saving Changes.

Reset or restore Windows

This section introduces the recovery options of Windows 10. Ensure that you read and follow the on-screen

recovery instructions.

Attention: 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.

Windows 10 recovery options

Windows 10 provides several options for you to restore or reset your computer. The following table helps you

decide which option to choose if you are having problems with Windows.

Problem Option

Your computer is not working well after installing apps, drivers, or

updates.

Restore to a system restore point.

Your computer is not working well and you don't know what causes

the problem.

Reset your computer.

You want to recycle or donate your computer. Reset your computer.

Windows cannot start properly. Use a recovery drive to restore or reset your

computer.

Windows System Restore

System Restore is a tool included in Windows 10. It monitors changes to Windows system files and saves

system state as a restore point. If your computer does not work well after installing apps, drivers, or updates,

you can revert your system to a previous restore point.

Note: If you revert your system to a previous restore point, personal data is not affected.

System Restore creates restore points:

• automatically (when it detects changes to Windows system files)

• at regular intervals (if set up by the user)

• at any time (if initiated manually by the user)

Note: In order for System Restore to create restore points, system protection must be turned on for the

system drive.

Create a system restore point manually

You can use Windows System Restore to create a restore point at any time.

Step 1. In Windows 10 search box, enter Create a restore point and select the matched result.

32 Lenovo Yoga C740 Series User Guide

Step 2. Select the System Protection tab and then select Create.

Note: System protection must be turned on for the system drive (typically with drive letter C)

before you can create restore points. Select a drive and then select Configure to turn on or disable

system protection.

Restore from a system restore point

Step 1. In Windows 10 search box, enter Recovery and select the matched result.

Step 2. Select Open System Restore ➙ Next.

Step 3. Select a restore point and then select Next ➙ Finish.

Note: You may select Scan for affected programs to check which program and driver installation

is associated with a particular restore point.

Reset Windows

If Windows is not running well as usual, you can choose to reset it.

Step 1. Open the Start menu and then select Settings ➙ Update & Security ➙ Recovery.

Step 2. Under Reset this PC, click Get started.

Step 3. Choose either Keep my files or Remove everything.

Attention: Back up personal data before choosing Remove everything.

Step 4. Follow on-screen instructions to complete the reset process.

Create a recovery drive

Use a USB drive (not supplied) to create a Windows recovery drive. In cases Windows cannot start, it can be

used to troubleshoot problems or reset Windows.

Notes: Most USB drives utilize the Type-A connector. If your computer does not include a USB Type-A

connector, you have two options:

• Purchase and use a USB drive with the Type-C connector, or

• Purchase and use a USB Type-C to Type-A adapter

Step 1. In Windows 10 search box, enter Create a recovery drive and select the matched result.

Step 2. Make sure Back up system files to the recovery drive is selected and then select Next.

Step 3. Connect a USB drive to your computer, select it, and then select Next ➙ Create.

Attention: Previous files on the drive will be deleted. Back up personal files before using it to

create a recovery drive.

When recovery drive is created, you might see a Delete the recovery partition from your PC option. If you

want to free up drive space on your computer, select it and then select Delete. Otherwise, select Finish.

Use a recovery drive to restore or reset Windows

If Windows cannot start, you can use a recovery drive (created in advance) to restore or reset Windows.

Step 1. Connect the recovery drive to your computer; restart your computer and set it to start from the

recovery drive.

Chapter 3.Explore your computer 33

Note: For computers without a USB Type-A connector, you may need to purchase and use an

adapter (USB Type-C to Type-A) to use a recovery drive.

Step 2. On the Choose an option screen, select Troubleshoot.

Step 3. Choose a recovery option.

Select Advanced Options ➙ System Restore to restore your computer to a system restore point.

Or select Recover from a drive to reset your computer.

Note: If you did not select the Back up system files to the recovery drive option when creating

the recovery drive, Recovery from a drive is not available.

Attention: All personal files created on your computer will be deleted after recovering from the

drive.

34 Lenovo Yoga C740 Series User Guide

Chapter 4. Help and support

Frequently asked questions

How do I open the Control Panel? • Open the Start menu and select Windows System ➙ Control Panel.

• Use Windows Search.

How should I turn off my

computer? Open the Start menu and select Power ➙ Shut down.

How do I partition my storage

drive? Refer to https://support.lenovo.com/solutions/ht503851

What should I do if my computer

stops responding.

Press and hold the power button until the computer turns off. Then restart the

computer.

What should 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. Wait until you are certain that all the liquid is dry before turning on your

computer.

CAUTION:

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.

Where can I get the latest device

drivers and UEFI/BIOS?

• Lenovo Vantage or Lenovo PC Manager

• Lenovo Support Web site at https://support.lenovo.com

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 or Lenovo PC Manager to:

• Download and install the latest drivers and firmware.

• Configure hardware settings

• Diagnose computer hardware problems.

• Check the computer warranty status.

• Open the Start menu and select Lenovo Vantage or

PC Manager.

• 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.

Resources How to access?

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

Visit https://support.lenovo.com

Windows help information

• Open the Start menu and select Get Help or Tips.

• Use Windows Search or the Cortana® personal

assistant.

• Microsoft support Web site: https://

support.microsoft.com

36 Lenovo Yoga C740 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

Record product information and problem details before you contact Lenovo.

Product information Problem symptoms and details

• Product name

• Machine type and serial number

• 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?

Note: The product name and serial number can usually be found on the bottom of the computer, either

printed on a label or etched on the cover.

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.

• 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

Chapter 4.Help and support 37

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.

38 Lenovo Yoga C740 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.

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.

40 Lenovo Yoga C740 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. You might also 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, 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 41

• 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.

42 Lenovo Yoga C740 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 43

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.

44 Lenovo Yoga C740 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 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.

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.

Appendix A. Important safety information 45

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/.

46 Lenovo Yoga C740 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 47

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.

48 Lenovo Yoga C740 Series User Guide

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.

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.

Appendix A. Important safety information 49

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.

50 Lenovo Yoga C740 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

• Num Lock for five seconds: Turn on or turn off Toggle Keys

• Left Alt+Left Shift+Num Lock: Turn on or turn off Mouse Keys

• Left Alt+Left Shift+PrtScn (or PrtSc): 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.

• 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:

52 Lenovo Yoga C740 Series User Guide

– Change the size of all the items on your screen.

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.

Appendix B. Accessibility and ergonomic information 53

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

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.

54 Lenovo Yoga C740 Series User Guide

Appendix C. Compliance information

This appendix provides the various compliance statements for 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.

FCC ID and IC ID location

If you purchased your computer in the United States or Canada and the computer includes factory-

preinstalled wireless modules, the FCC ID and IC ID label information for the wireless modules are visible on

the computer’s bottom cover.

The following graphic shows the location of the engraved (laser etched) text or the attached non-removable

label.

C740-14IML

C740-15IML

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.

56 Lenovo Yoga C740 Series User Guide

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 by 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

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.

Appendix C. Compliance information 57

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.

58 Lenovo Yoga C740 Series User Guide

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

Appendix C. Compliance information 59

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 Mainland China

Battery recycling information for Taiwan

Battery recycling information for the United States and Canada

Restriction of Hazardous Substances (RoHS) Directive by countries and

regions

The latest environmental information about Lenovo products is available at:

60 Lenovo Yoga C740 Series User Guide

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.

Mainland 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.

Appendix C. Compliance information 61

62 Lenovo Yoga C740 Series User Guide

Taiwan RoHS

Electromagnetic emission notices

Federal Communications Commission (FCC) Supplier’s Declaration of

Conformity

The following information refers to Lenovo Yoga C740-14IML and Lenovo Yoga C740-15IML, machine types

81TC and 81TD.

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

Appendix C. Compliance information 63

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.

64 Lenovo Yoga C740 Series User Guide

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.

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.

Appendix C. Compliance information 65

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。

• 未滿2歲幼兒不看螢幕，2歲以上每天看螢幕不要超過1小時。

Supplemental information for the Eurasian Union

Назначение

персональный компьютер для личного и служебного использования, для

передачи данных, с поддержкой различных профилей подключения (Wi-Fi,

Bluetooth и пр.).

Изготовитель

Леново ПЦ ХК Лимитед, 23/Ф Линколн Хаус, Тайку Плэйс 979 Кингз Роуд,

Куарри Бэй, Гонконг (Lenovo PC HK Limited, 23/F Lincoln House, Taikoo Place

979 King's Road, Quarry Bay, Hong Kong)

Страна производства Китай

Наименование и

местонахождение

уполномоченного

изготовителем лица

ООО «Леново (Восточная Европа/Азия)» 143401, Московская область, г.

Красногорск, бульвар Строителей, дом 4, корпус 1, помещение VII, тел. +7

495 645 83 38, факс +7 495 645 78 77.

Импортер

Наименование, адрес импортера и информация для связи с ним указаны на

этикетке* на упаковке продукции.

*Согласно ГОСТ 2.601-2013 «Единая система конструкторской документации.

Эксплуатационные документы», пункт 5.1, подпункт 5.1.2, этикетка является

видом эксплуатационных документов.

Дата изготовления (месяц и

год)

Указана на этикетке* на упаковке продукции, в графе Date (дата указана в

формате год-месяц-дата). Для получения более подробной информации

посетите веб-сайт: https://support.lenovo.com

Единый знак обращения на

рынке стран Таможенного

союза

Brazil audio notice

Ouvir sons com mais de 85 decibéis por longos períodos pode provocar danos ao sistema auditivo.

ENERGY STAR

66 Lenovo Yoga C740 Series User Guide

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

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 1. Balanced (when plugged into ac power)

• Turn off the display: After 10 minutes

• Put the computer to sleep: After 10 minutes

Appendix C. Compliance information 67

68 Lenovo Yoga C740 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.

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. Thunderbolt is a trademark of Intel Corporation or

its subsidiaries in the U.S. and/or other countries. Microsoft, Windows, OneDrive, Outlook, Skype, Office

365, Direct3D, and Cortana are trademarks of the Microsoft group of companies. Wi-Fi and Miracast are

registered trademarks of Wi-Fi Alliance. USB Type-C is a trademark of USB Implementers Forum. All other

70 Lenovo Yoga C740 Series User Guide

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