Replacing the backup battery | Lenovo 20AX000VUS instruction

7. Connect the antenna cables to the new card as shown in the drawing.

8.Reinstall the base cover assembly. See “Replacing the base cover assembly” on page 64.

9.Turn the computer over again. Connect the ac power adapter and all cables.

Replacing the backup battery

Before you start, print these instructions.

DANGER

If the backup battery is incorrectly replaced, there is danger of an explosion. The backup battery contains a small amount of harmful substances. To avoid possible injury:

•Replace only with a battery of the type recommended by Lenovo.

•Keep the battery pack away from fire.

•Do not expose it to excessive heat.

•Do not expose it to water or rain.

•Do not short-circuit it.

•Do not drop, crush, puncture, or subject to strong forces. Battery abuse or mishandling can cause the battery to overheat, which can cause gasses or flame to “vent” from the battery pack or coin cell.

To replace the backup battery, do the following:

1.Disable the built-in battery. See “Disabling the built-in battery” on page 63.

2.Close the computer display, and turn the computer over.

3.Remove the base cover assembly. See “Replacing the base cover assembly” on page 64.

70User Guide

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Lenovo 20AX000VUS manual Replacing the backup battery

Contents

User Guide Safety, Warranty, and Setup Guide Regulatory Notice First Edition May Copyright Lenovo Contents Replacing devices Iii Iv User Guide Prevent your computer from getting wet Read this firstProtect yourself from the heat that your computer generates Protect the cables from being damaged Handle your computer gently Important safety informationProtect your computer and data when moving it Carry your computer carefully Conditions that require immediate action Safety guidelinesService and upgrades Vii 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 ventilation Electrical current safety information Liquid crystal display LCD notice Using headphones or earphonesAdditional safety information Xiii Xiv User Guide Front view Locating computer controls, connectors, and indicatorsProduct overview Camera Power buttonSystem status indicator illuminated ThinkPad logo Microphones Media card reader slot Right-side viewFan louvers Combo audio jack High Definition Multimedia Interface Hdmi port USB 3.0 connectorLeft-side view Security-lock slot Always On USB connector USB Ac power connector Lenovo OneLink connectorEthernet connector Bottom view Status indicators FCC ID and IC Certification number label Locating important product informationMachine type and model label Certificate of Authenticity label Features Specifications Operating environment Accessing Lenovo programs on the Windows 7 operating system Lenovo programs Program Control Panel section Green text in Control Panel Accessing Lenovo programs from Control PanelProgram Icon name Lenovo programs overview Accessing Lenovo programs on the Windows 8 operating systemAccess Connections Lenovo Settings Client Security SolutionLenovo Mobile Access Lenovo Solution Recovery Media Password ManagerPower Manager Rescue and Recovery Registering your computer Using your computerFrequently asked questions Can I get my user guide in another language? Need to attach or replace a device? How to use the battery power more effectively?Is getting connected in different locations a challenge? Using the multi-touch screen To view the recently used applications Special keys Function keys Using the ThinkPad pointing device Windows key Customizing the ThinkPad pointing device Using the TrackPoint pointing stickUsing the multi-touch touch pad Click Hardware and Sound Mouse ThinkPad Using the ac power adapter Power managementChecking the battery status Connecting the ac power adapter Charging the batteryMaximizing the battery life Tips on using the ac power adapter Select Power off display Sleep Managing the battery powerPower-saving modes Click Settings Power Sleep Always On USB function off Wireless offClick Administrative Tools Enabling the wakeup function Ethernet connections Connecting to the networkWireless connections Bluetooth Establishing a wireless connectionUsing Bluetooth Select Send To Bluetooth Devices Access Connections status icon Checking the wireless network connection statusAccess Connections gauge Access Connections wireless status icon Attaching an external monitor Enabling or disabling the wireless featuresConnecting an external monitor Considerations for attaching an external monitor Setting the monitor typeSet Resolution Click Advanced Settings Considerations for using the Extend desktop function Changing display settingsUsing the Extend desktop function Click Multiple Display Using audio features Setting up a presentationUsing the AMD Switchable Graphics feature Configuring for sound recording Using the integrated cameraUsing a media card Configuring camera settings Inserting a media card Removing a media card User Guide Ergonomic information Accessibility and comfortYou and your computer Accessibility information Comfort Assistive technologies Traveling with your computerTravel tips Screen-reader technologies Travel accessories Typing passwords Using passwordsPasswords and sleep mode Security Setting a power-on password Power-on passwordHard disk passwords Select Power-on Password Setting a hard disk password Select Hard Disk 1 Password or Hard Disk 2 Password Supervisor password Changing or removing a hard disk password Setting, changing, or removing a supervisor password Select Supervisor Password Using Windows BitLocker Drive Encryption Hard disk security Setting the security chip Setting the security chip Swiping your finger over the reader Using the fingerprint readerEnrolling your fingerprint Maintaining the fingerprint reader Using firewalls Protecting data against viruses Security User Guide Creating and using a recovery media Recovery overviewRecovery overview for the Windows 7 operating system Creating recovery media Performing backup and recovery operations Performing a backup operation Click the Restore your system from a backup icon Using the Rescue and Recovery workspacePerforming a recovery operation Rescue files from your hard disk drive or from a backup Creating a rescue medium Creating and using a rescue mediumUsing a rescue medium Reinstalling preinstalled applications Reinstalling preinstalled applications and device driversSolving recovery problems Reinstalling preinstalled device drivers Change PC settings General Recovery overview for the Windows 8 operating systemResetting your computer to the factory default settings Refreshing your computer Recovery overview User Guide Replacing devices Disabling the built-in batterySelect Disable Built-in Battery Static electricity prevention Replacing the base cover assembly Replacing the hard disk drive or solid-state drive User Guide Replacing a memory module Replacing a Mini PCI ExpressCard for wireless LAN connection Replacing devices Replacing the backup battery Replacing devices User Guide Before you begin Advanced configurationInstalling a new operating system Installing the registry patches for Windows Installing the Windows 7 operating systemSelect UEFI/Legacy Boot Installing the Windows 7 fix modules Select Startup Boot Installing the Windows 8 operating systemInstalling the driver for USB 3.0 for Windows Installing the Windows 8 fix modules Click Change display settings Click Advanced Settings Installing other drivers and software for WindowsThinkPad Setup Click Properties Config menu Main menu Menu item Submenu item Selection Comments Network EnabledFor Legacy Only boot AC Only Menu item Submenu item Selection Comments OS Optimized Defaults is setDisabled Auto Integrated Graphics mode if SwitchableSetting to AMD switchable Power Hours Beep and AlarmDate/Time menu Serial ATA Sata Security menu Menu item Submenu item Selection Comments PasswordAt unattended boot, a password Smbios Reporting Smbios Disabled, the Security Chip optionBios ROM Strings Reporting Inactive Virtualization Port AccessMemory Protection Standard Mode Secure BootUser Mode Startup menu Changing the startup sequence Restart menu Preboot eXecution Environment Updating your system Uefi BiosUsing system management System management Wake on LAN Setting management featuresNetwork Boot sequence Asset ID Eeprom Flash update Preventing problems General tips for preventing problems Getting the latest drivers from the Web site Getting the latest drivers using System UpdateMaking sure device drivers are current Click Downloads and drivers Be gentle with your computer Be careful about where and how you workTaking care of your computer Carry your computer properly Care for the fingerprint reader Cleaning the cover of your computerTake care in setting passwords Register your computer Be sure not to modify your computer Cleaning your computer keyboard Cleaning your computer display User Guide Troubleshooting Troubleshooting computer problemsDiagnosing problems Computer stops responding If you spill something on your computer Error messagesSpills on the keyboard Troubleshooting computer problems Errors without messages Beep errors Problem Solution Ethernet problems Memory module problemsNetworking problems Solution Wireless LAN problemBluetooth problems Open Control Panel. Click Hardware and Sound Sound Playback ThinkPad pointing device problems Problems with the keyboard and other pointing devicesProblems with the display and multimedia devices Keyboard problems Computer screen problems External monitor problems Set Resolution Double-clickSound, video and game controllers Audio problemsClick Hardware and Sound Fingerprint reader problems An ac power adapter problem Battery and power problemsBattery problems Power problems Sleep and hibernation problems Power button problemBoot problems Problems with drives and other storage devices Hard disk drive problems Solid-state drive problem Software problemProblems with ports and connectors USB problem User Guide Getting support Before you contact Lenovo Lenovo Support Web site Getting help and serviceUsing diagnostic programs Calling Lenovo Finding ThinkPad options Telephone numbers Purchasing additional services Appendix A. Regulatory information Wireless related informationWireless interoperability 119 Location of the UltraConnect wireless antennas Usage environment and your health Electronic emission notices Locating wireless regulatory noticesExport classification notice Federal Communications Commission Declaration of Conformity German Class B compliance statement Appendix A. Regulatory information User Guide Japan recycling statements Appendix B. Weee and recycling statementsImportant Weee information 125 Disposing of Lenovo computer components Battery recycling information for the European UnionRecycling information for Brazil Appendix B. Weee and recycling statements User Guide Click Hardware and Sound Device Manager Power plan Energy Saver settings when plugged into ac powerAppendix C. Energy Star model information 129 Click OK Appendix D. Notices 131 Trademarks 133 European Union RoHSChina RoHS Turkish RoHS Ukraine RoHS India RoHS Page Part Number 1P P/N