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Lenovo T431s, 20AA000BUS, 20AA000MUS manual User Guide

Models: 20AA T431s 20AA000MUS 20AA000BUS

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4. Tighten the screws with the keyboard multi-tool to secure the keyboard in place.

5.Slide the keyboard frame backward by 2.5 mm (0.1 inch) with the keyboard multi-tool. Hide the latches of the keyboard frame under the keyboard bezel by pushing the latches with your finger as shown.

Note: Do not press and hold the keys while sliding the keyboard frame, otherwise the keyboard frame cannot be moved.

6.Adjust the keyboard frame in place with the keyboard multi-tool and ensure that all the latches are secured under the keyboard bezel.

Note: Do not press and hold the keys while sliding the keyboard frame, otherwise the keyboard frame cannot be moved.

76User Guide

Image 92

Lenovo T431s, 20AA000BUS, 20AA000MUS manual User Guide

Contents

User Guide Safety, Warranty, and Setup Guide Regulatory Notice Contents Replacing devices Appendix F. EurAsia Compliance Mark Iv User Guide Read this first Protect yourself from the heat that your computer generatesPrevent your computer from getting wet Protect the cables from being damagedImportant safety information Protect your computer and data when moving itHandle your computer gently Carry your computer carefullyConditions that require immediate action Safety guidelinesService and upgrades Power cords and power adapters Plugs and outlets Power supply statementExtension cords and related devices External devices General battery noticeBuilt-in rechargeable battery notice Lithium coin cell battery notice Heat and product ventilationElectrical current safety information Liquid crystal display LCD notice Using headphones or earphonesAdditional safety information Xiv User Guide Front view Locating computer controls, connectors, and indicatorsProduct overview Power button CameraMicrophones Fingerprint reader on some modelsAlways On USB 3.0 connector Mini DisplayPort connectorRight-side view Fan louversPower connector Ethernet connectorLeft-side view Security keyholeBottom view Status indicators Rear viewFn Lock indicator Speaker-mute indicatorMicrophone-mute indicator Camera status indicatorFCC ID and IC Certification information Locating important product informationMachine type and model information Features MicroprocessorMemory Storage deviceSpecifications Lenovo programs Accessing Lenovo programs on the Windows 7 operating systemOperating environment Accessing Lenovo programs from Control Panel Program Icon nameAccessing Lenovo programs on the Windows 8 operating system Lenovo program overview Lenovo Settings Lenovo Solution CenterPassword Manager Power ManagerSystem Update Using your computer Frequently asked questionsRegistering your computer Can I get my user guide in another language?How do I attach or replace a device? How can I use the battery power more effectively?Is getting connected in different locations a challenge? Special keys Function keysUsing the ThinkPad pointing device Windows keyCustomizing the ThinkPad pointing device Changing the capPower management Checking the battery statusUsing the ac power adapter Charging the batteryMaximizing the battery life Connecting the ac power adapterManaging the battery power Power-saving modesSelect Power off display Sleep HibernationConnecting to the network Click Administrative ToolsClick the Global Power Settings tab Ethernet connectionsWireless connections Wireless LANTips for using the wireless LAN feature Wireless WANEstablishing a wireless connection Using BluetoothBluetooth Click Hardware and Sound Click Devices and PrintersChecking the wireless network connection status Select Send To Bluetooth DevicesAccess Connections gauge Access Connections status iconAccess Connections wireless status icon Using an external monitorEnabling or disabling the wireless features Set Resolution Click Advanced Settings Connecting an external monitorSetting the monitor type Changing display settings Using the Extend desktop functionConsiderations for using the Extend desktop function Considerations for attaching an external monitorSetting up a presentation Using audio featuresUsing the camera Configuring for sound recordingConfiguring camera settings Then click Hardware and Sound Realtek HD Audio ManagerRemoving a media card Using a media cardInserting a media card Ergonomic information Accessibility and comfortYou and your computer Accessibility information ComfortTraveling with your computer Travel tipsAssistive technologies Screen-reader technologiesTravel accessories Using passwords Passwords and sleep modeTyping passwords SecurityPower-on password Hard disk passwordsSetting a power-on password Select Power-on PasswordSetting a hard disk password Select Hard Disk 1 Password or Hard Disk 2 PasswordSupervisor password Changing or removing a hard disk passwordSetting, changing, or removing a supervisor password Select Supervisor PasswordUsing Windows BitLocker Drive Encryption Hard disk securityEncryption Setting the security chipSetting the security chip Swiping your finger over the reader Using the fingerprint readerEnrolling your fingerprint Maintaining the fingerprint reader Using firewalls Protecting data against virusesSecurity User Guide Recovery overview Recovery overview for the Windows 7 operating systemCreating and using a recovery media Creating recovery mediaPerforming backup and recovery operations Performing a backup operationUsing the Rescue and Recovery workspace Performing a recovery operationClick the Restore your system from a backup icon Rescue files from your hard disk drive or from a backupCreating a rescue medium Creating and using a rescue mediumUsing a rescue medium Reinstalling preinstalled programs and device drivers Solving recovery problemsReinstalling preinstalled programs Reinstalling preinstalled device driversRecovery overview for the Windows 8 operating system Resetting your computer to the factory default settingsRefreshing your computer Advanced startup optionsRecovery overview User Guide Disabling the built-in battery Select Disable Built-in BatteryReplacing devices Static electricity preventionInstalling or replacing the SIM card Replacing the base cover assembly Replacing the hard disk drive or solid-state drive Replacing devices Replacing a memory module Replacing an M.2 wireless LAN card User Guide Replacing devices Replacing an M.2 wireless WAN card Replacing devices User Guide Replacing the backup battery Replacing the keyboard Replacing devices User Guide Replacing devices User Guide Replacing devices User Guide ThinkPad port replicators and docking stations Enhancing your computerFinding ThinkPad options Front view Enhancing your computer Power connector Connect the ac power adapter Enhancing your computer Attaching a ThinkPad port replicator or docking station Enhancing your computer Detaching a ThinkPad port replicator or docking station Security feature Using the system lock key Before you begin Advanced configurationInstalling a new operating system Installing the Windows 7 operating system Select UEFI/Legacy BootInstalling the registry patches for Windows Installing the Windows 7 fix modulesInstalling the Windows 8 operating system Installing the driver for USB 3.0 for WindowsSelect Startup Boot Installing the Windows 8 fix modulesInstalling other drivers and software for Windows ThinkPad SetupClick Change display settings Click Advanced Settings Click PropertiesConfig menu Main menuMenu item Submenu item Value Comments Network USB Keyboard/Mouse Maximize Performance Ahci Date and Time menu Security menuMenu item Submenu item Value Comments Password Bios ROM Uefi Bios Standard Mode Startup menuChanging the startup sequence Network Boot Restart menuSystem management Updating your system Uefi BiosUsing system management Asset ID Eeprom Setting management featuresNetwork Boot sequence Flash update 109 Preventing problemsGeneral tips for preventing problems Getting the latest drivers from the Web site Getting the latest drivers using System UpdateMaking sure device drivers are current Be careful about where and how you work Taking care of your computerBe gentle with your computer Carry your computer properlyCleaning the cover of your computer Take care in setting passwordsCare for the fingerprint reader Register your computer Be sure not to modify your computerCleaning your computer keyboard Cleaning your computer displayUser Guide Troubleshooting computer problems Diagnosing problemsTroubleshooting Computer stops respondingIf you spill something on your computer Error messagesSpills on the keyboard Troubleshooting computer problems Errors without messages Beep errors Memory module problemsSolution Networking problemsEthernet problems Problems with the keyboard and other pointing devices Wireless LAN problemWireless WAN problem Bluetooth problemsProblems with the display and multimedia devices Keyboard problemsComputer screen problems Click KeyboardExternal monitor problems Click Advanced SettingsClick Advanced Settings Set Resolution Double-clickSound, video and game controllers Audio problemsClick Hardware and Sound Battery problems Fingerprint reader problemsBattery and power problems An ac power adapter problem Power problemsSleep and hibernation problems Power button problemBoot problems Problems with drives and other storage devices Hard disk drive problemsSoftware problem Problems with ports and connectorsSolid-state drive problem USB problemUser Guide Getting support Before you contact LenovoGetting help and service Using diagnostic programsLenovo Support Web site Calling LenovoPurchasing additional services Telephone numbersUser Guide Wireless related information Wireless interoperabilityAppendix A. Regulatory information 137Locations of the UltraConnect wireless antennas Usage environment and your healthLocating wireless regulatory notices Export classification noticeElectronic emission notices Federal Communications Commission Declaration of ConformityGerman Class B compliance statement Appendix A. Regulatory information User Guide Appendix B. Weee and recycling statements Important Weee informationJapan recycling statements 143Disposing of Lenovo computer components Battery recycling information for the European UnionRecycling information for Brazil Appendix B. Weee and recycling statements User Guide 147 Appendix C. Energy Star model informationClick Hardware and Sound Device Manager Click OK Appendix D. Notices 149Trademarks 151 China RoHS Turkish RoHSUkraine RoHS India RoHS Appendix F. EurAsia Compliance Mark 153User Guide Page Part Number 1P P/N