Status indicators, System-status indicators | Lenovo 23539KU

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Fan louvers

The internal fan and louvers enable air to circulate in the computer and cool the central processor.

Note: To avoid impeding airflow, do not place any obstacle in front of the fan.

Status indicators

Your computer has system-status indicators and power-status indicators. The status indicators show the current status of your computer.

System-status indicators

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Wireless LAN/WAN/WiMAX/Bluetooth status indicator

Green: The wireless LAN, WAN, Bluetooth, or WiMAX feature is on.

Off: Wireless network devices are disabled or the wireless radio is turned off.

Device access status indicator

The hard disk drive, solid state drive, mSATA solid state drive, or the second hard disk drive in the Serial Ultrabay Slim bay is reading or writing data.

Note: When this indicator is blinking, do not put the computer into sleep mode, remove the second hard disk drive, or turn off the computer.

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Power-on status indicator

The power button stays lit whenever the computer is on, blinks when the computer is in sleep mode, and is off when the computer is turned off.

8User Guide

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Lenovo 23539KU manual Status indicators, System-status indicators, Wireless LAN/WAN/WiMAX/Bluetooth status indicator

Contents

User Guide Safety, Warranty, and Setup Guide Regulatory Notice First Edition May Copyright Lenovo Contents Replacing devices Appendix B. Weee and recycling statements 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 Viii User Guide Power cords and power adapters Extension cords and related devices External devices Power supply statementPlugs and outlets General battery notice Rechargeable battery notice Lithium coin cell battery notice Heat and product ventilation Xiii Electrical current safety information Laser compliance statement Liquid crystal display LCD notice Using headphones or earphonesAdditional safety information Do not connect phone line while using tablet mode Front view Locating computer controls, connectors, and indicatorsProduct overview Integrated camera on some models Power buttonBuilt-in microphones on some models ThinkLight light Security keyhole Wireless radio switchRight-side view Serial Ultrabay Slim bay Fan louvers USB 3.0 connectorLeft-side view Combo audio jack Smart card slot PCI Express Mini Card slot for wireless LAN/WiMAXBottom view Rear View Mini DisplayPort connector or Thunderbolt connector Power jackEthernet connector Always On USB connector Wireless LAN/WAN/WiMAX/Bluetooth status indicator Status indicatorsSystem-status indicators Device access status indicator Locating important product information Power status indicatorsBattery status Machine type and model label FCC ID and IC Certification number label Features Certificate of Authenticity label User Guide Specifications Operating environment ThinkVantage programs Accessing ThinkVantage programsAccessing programs from Control Panel Program Icon name Program Control Panel section Green text in Control Panel Access ConnectionsIntroduction to ThinkVantage programs Password Manager Client Security SolutionLenovo Solutions Center Active Protection System Rescue and Recovery Power ManagerRecovery Media System Update User Guide Register your computer Using your computerFrequently asked questions Is getting connected in different locations a challenge? Need to attach or replace a device? Enabling or disabling the wireless features Fn+F5 Power conservation Fn+F4Switching a display output location Fn+F7 Special keys and buttons Multimedia controls Changing the camera and audio settings Fn+F6Adjusting the brightness level of the computer display Other functions Setting the microphone mute button Volume and mute buttonsSetting the volume Windows key Using the UltraNav pointing deviceWindows key Click Start Control Panel Hardware and Sound Mouse UltraNav Using the TrackPoint pointing deviceCustomizing the TrackPoint pointing device Using the touch pad Changing the cap Adding the UltraNav icon to the system tray Power managementChecking battery status Connecting the ac power adapter Using the ac power adapterCharging the battery Tips on using the ac power adapter Power-saving modes Maximizing battery lifeManaging your battery power Enabling the battery alarm Handling the batteryWireless off Click the Global Power Settings tab Using your computer Wireless LAN Connecting to the networkWireless connections Wireless WAN Tips for using the wireless LAN feature Establishing wireless LAN connectionsEstablishing wireless WAN connections Wireless network setup Checking wireless connection status Using BluetoothUsing WiMAX Select Send To Bluetooth Devices Access Connections icon and wireless status icon Enabling or disabling the wireless feature Changing display settingsConnecting a projector or external display Presentations and multimedia Set Resolution Click Advanced Settings Connecting an external monitorSetting the monitor type Considerations for attaching an external monitor Considerations for attaching a DVI monitor Using the DVI monitorSelect Multiple Displays Using the Mini DisplayPort connector Setting up a presentationUsing the Extend desktop function Using the Thunderbolt connector Using the Nvidia Optimus Graphics feature Using audio features Configuring camera settings Using an integrated cameraUsing the optical drive Adjusting the video output quality of your camera Using an ExpressCard, a flash media card, or a smart card MultiBurner drive Using your computer User Guide Ergonomic information Accessibility and comfortYou and your computer Accessibility information Comfort Travel tips Travel accessoriesTraveling with your computer Assistive technologies User Guide 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 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 LED behavior of the fingerprint reader Using the fingerprint readerEnrolling your fingerprint LED behavior Description Swiping your finger over the readerLogging on to the system Setting the fingerprint reader Care for the fingerprint reader Security Using and understanding firewalls Protecting data against viruses Creating recovery media Recovery overviewCreating and using recovery media Performing a backup operation Performing backup and recovery operationsUsing recovery media 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 device drivers Reinstalling preinstalled applications and device driversReinstalling preinstalled applications Solving recovery problems Static electricity prevention Replacing the batteryReplacing devices User Guide Replacing a memory module User Guide Replacing devices Replacing the hard disk drive or solid state drive Replacing devices Replacing the keyboard To remove the keyboard, do the following Replacing devices To install the keyboard, do the following Replacing devices User Guide Replacing devices User Guide Replacing devices To replace a PCI Express Mini Card with three connectors Remove the screw Card pops up Remove the card User Guide Before you start, print these instructions User Guide Replacing devices User Guide Replacing devices User Guide Replacing devices Replacing the Serial Ultrabay Slim device Replacing the SIM card Replacing devices Replacing the backup battery Replacing devices User Guide Performing a warm-swap operation Enhancing your computerFinding ThinkPad options Lift up the stopper on the hard disk drive adapter Enhancing your computer ThinkPad docking stations and port replicators Inserting the secondary hard disk drive adapter into the bay Front view User Guide Rear view User Guide Attaching a ThinkPad port replicator or docking station User Guide Enhancing your computer Security feature Detaching a ThinkPad port replicator or docking station Using the system lock key User Guide Before you begin Advanced configurationInstalling a new operating system 111 Installing the registry patches for Windows Installing Windows 7 operating systemSelect UEFI/Legacy Boot Installing the Windows 7 update module package Click Change display settings Click Advanced Settings Installing device driversInstalling the driver for the 4-in-1 media card reader Click Update Driver Main menu ThinkPad SetupInstalling other device drivers and software Menu item Submenu item Value Comments Network Config menuMAC address Internal LAN AC only Disabled EnabledFor Legacy Only boot Menu item Submenu item Value Comments Display Menu item Submenu item Value Comments Keyboard/MouseBoth ThinkPad LCD Disabled No runtime PowerBattery Optimized Always Battery Optimized Beep and Alarm Automatic VT100+ Menu item Submenu item Value Comments Serial ATA SataIntel AMT Security menu Menu item Submenu item Value Comments PasswordDate/Time menu Internal FingerprintExternal Enter Update Option Bios ROM String Reporting Bios text stringSmbios Reporting Smbios data Protection Enabled Menu item Submenu item Value Comments Port Access Anti-Theft 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 User Guide 131 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 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 Register your computer Be sure not to modify your computer Cleaning the cover of your computerTake care in setting passwords 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 User Guide Errors without messages Ethernet problems Beep errorsMemory problems Problem Solution Wireless LAN problem Solution UltraNav problems Wireless WAN problemBluetooth problems Keyboard and other pointing devices Display and multimedia devices Keyboard problemsComputer screen problems Click Keyboard External monitor problems Double-clickSound, video and game controllers Audio problemsClick Start Control Panel Click Hardware and Sound Fingerprint reader problems AC power adapter problems Battery and powerBattery problems Startup problems Power problemsPower button problem Sleep and hibernation problems Optical drive problems Hard disk drive problemsSolid state drive problems Drives and other storage devices Software problems Ports and connectors USB problem Docking station or port replicator problem Before you contact Lenovo Getting help and serviceGetting support Calling Lenovo Using diagnostic programsLenovo Support Web site Purchasing additional services Telephone numbers User Guide Appendix A. Regulatory information Wireless related informationWireless interoperability 159 Type 1 Antenna location Location of the UltraConnect wireless antennasUsage environment and your health Locating wireless regulatory notices Type 2 Antenna location Federal Communications Commission Declaration of Conformity Export classification noticeElectronic emissions notices Industry Canada Class B emission compliance statement German Class B compliance statement Korea Class B compliance statement User Guide Japan recycling statements Appendix B. Weee and recycling statementsEU Weee statements 165 Disposing of Lenovo computer components Battery recycling information for TaiwanRecycling information for Brazil Battery recycling information for the European Union User Guide 169 Power plan Energy Saver settings when plugged into ac powerAppendix C. Energy Star model information Click OK Appendix D. Notices 171 Trademarks Page Part Number 1P P/N