Lenovo 81TD001LGE operation manual

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. GS35F-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

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

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

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

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

https://

Lenovo Yoga C740-15IML

81TD

iv Lenovo Yoga C740 Series User Guide

Chapter 1. Meet your computer

Front

1. Microphones

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

3. Camera cover slider

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

Capture or record sound and voice.

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.

Move the slider to cover or uncover the camera lens. Note: The camera cover helps you better protect your privacy.

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

Base

C740-14IML

1. Speakers

2. Keyboard Enter characters and interact with programs.

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

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

Produce sound.

Note: The keyboard also includes hotkeys and function keys for changing settings and performing tasks quickly.

Note: The touchpad also supports multi-touch function.

2 Lenovo 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-C connector (USB 3.1 Gen 1)

2. Charging status indicator

• 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.

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

4 Lenovo 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)

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

• 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.

• 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

6 Lenovo 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.

Chapter 1. Meet your computer 7

Right

C740-14IML

1. Always On USB Type-A connector (USB

3.1 Gen 1)

2. Power button (with power indicator)

• 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

Press to turn on the computer or put the computer to sleep mode.

To turn off the computer, open the Start menu, click 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.

Power, and

8 Lenovo 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)

3. Power button (with power indicator)

• 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

Press to turn on the computer or put the computer to sleep mode.

To turn off the computer, open the Start menu, click 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.

Power, and

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

2. Ventilation slots Dissipate heat.

3. Speakers Produce sound.

When the computer is off, press this button to start the System Recovery or the BIOS setup utility, or to enter the boot menu.

Chapter 1. Meet your computer 11

Features and specifications

Dimensions

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

Battery pack C740-14IML

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

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)

• 51 Wh

• 4 cells

C740-15IML

• 60.3 Wh

• 3 cells

the Start button and then select System.

Memory

Storage device

Screen C740-14IML

Keyboard

• Type: double data rate 4 (DDR4) SDRAM

• Capacity: 8GB / 12GB / 16GB

• Type: solid-state drive

• Form factor: M.2

• Bus: PCI Express

• Capacity: 256GB / 512GB / 1TB

• 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

• 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

Others

• Bluetooth

• Wireless LAN

• 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

3.1 Gen 2

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)

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.

Lenovo Yoga C740 Series User Guide

Windows user interface

1. Account

2. Documents

3. Pictures

4. Settings

5. Power

6. Start button

7. Windows Search

8. Task View

9. Windows notification area

10. Battery status icon

11. Network icon

12. Action center

Change account settings, lock the computer, or sign out from the current account.

Open the Documents folder, a default folder to save your received files.

Open the Pictures folder, a default folder to save your received pictures.

Launch Settings.

Shut down, restart, or put the computer into sleep mode.

Open the Start menu.

Type what you are looking for in the search box and get search results from your computer and the Web.

Display all opened apps and switch among them.

Display notifications and status of some features.

Display power status and change battery or power settings. When your computer is not connected to ac power, the icon changes to

Connect to an available wireless network and display the network status.

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

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