Ambient light sensor | Dell UY691 specification

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1ambient light sensor

The ambient light sensor is disabled when your computer is shipped to you. If you enable the sensor and then use any of the display brightness key combinations, the sensor is disabled and the display brightness is increased or decreased accordingly.

Dell™ QuickSet allows you to enable or disable the ambient light sensor feature. You can also adjust maximum and minimum brightness settings that are activated when you enable the ambient light sensor feature. For more information about QuickSet, right-click the QuickSet icon in the taskbar, and click Help.

NOTE: Rebooting the computer returns the ambient light sensor to the setting (either enabled or disabled) as it was before it was adjusted.

NOTE: The ambient light sensor adjusts the display backlighting on your portable computer only. It does not control the brightness on any external monitors or projectors.

Using the Display

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Dell UY691 manual Ambient light sensor

Contents

User’s Guide Abbreviations and Acronyms Contents Using the Keyboard Setting Up and Using Networks Securing Your Computer Double-Clicking the Dell Support Icon Traveling With Your Computer Adding and Replacing Parts 149 Drivers and Utilities CD Finding Information Quick Reference Guide Dell Support Website support.dell.com QuickSet on To view Dell QuickSet Help, right-click the QuicksetIcon in the Microsoft Windows taskbar For more information on Dell QuickSet, see Dell Front View About Your Computer Track stick Light is flashing Y B O a R D S T a T U S L I G H T S Left Side View D I O C O N N E C T O R S Right Side View Back View Connects serial devices, such as a mouse or handheld device About Your Computer Bottom View To prepare the new computer for the file transfer Transferring Information to a New Computer Click Finished and restart the new computer Windows Vista Battery Performance Using a Battery Charge Gauge Checking the Battery ChargeDell QuickSet Battery Meter Microsoft Windows Power Meter Standby Mode Conserving Battery PowerPower Management Modes Low-Battery Warning Hibernate Mode Replacing the Battery Configuring Power Management SettingsCharging the Battery Storing a Battery System Functions Using the KeyboardNumeric Keypad Key Combinations Microsoft Windows Logo Key Functions BatteryPower Management Display Functions Touch Pad Pull the cap off the track stick Changing the Track Stick CapCustomizing the Touch Pad and Track Stick Using the Keyboard Using the Keyboard Playing CDs or DVDs Using Multimedia Volume Control Buttons Adjusting the VolumeAdjusting the Picture Volume Control Window Adjusting Brightness Using the Display Click the Windows Vista Start button →Control Panel Microsoft Windows XP Microsoft Windows XP Click the Start button and click Control Panel Using the Ambient Light Sensor Ambient light sensor Using the Display Setting Up a Network in Microsoft Windows XP Setting Up and Using NetworksConnecting a Network or Broadband Modem Cable What You Need to Establish a Wlan Connection Setting Up a Network in Microsoft Windows VistaWireless Local Area Network Wlan Checking Your Wireless Network Card Setting Up and Using Networks Connecting to a Wlan Setting Up and Using Networks Checking Your Mobile Broadband Card Mobile Broadband or Wireless Wide Area Network Wwan Enabling/Disabling the Dell Mobile Broadband Network Card Connecting to a Mobile Broadband Network For information about Dell QuickSet, see Dell QuickSet on Dell Wi-Fi Catcher Network LocatorInternet Connection Firewall Button →Help and Support Setting Up and Using Networks Card Blanks Using CardsInstalling a PC Card or ExpressCard Card Types ExpressCard PC Card Removing a Card or Blank Using Cards About Smart Cards Securing Your ComputerSecurity Cable Lock Smart Cards Installing a Smart Card Passwords Using an Administrator Password Using a Primary/System Password Using a Hard Drive Password Trusted Platform Module TPM Enabling the TPM Feature If Your Computer Is Lost or Stolen Security Management SoftwareComputer Tracking Software Securing Your Computer Securing Your Computer Diagnostic Light Codes During Post TroubleshootingDiagnostic Lights Computer. If the computer starts Starting the Dell Diagnostics From Your Hard Drive Dell Technical Update ServiceDell Diagnostics When to Use the Dell Diagnostics Dell Diagnostics Main Menu Troubleshooting Clicking the Dell Support Icon Accessing the Dell Support UtilityDell Support Utility Double-Clicking the Dell Support Icon Drive Problems Right-click Local Disk C CD and DVD drive problemsHard drive problems Problems writing to a CD/DVD-RW drive Mail, Modem, and Internet Problems Error Messages Troubleshooting Click Start→Control Panel→Add or Remove Programs For Windows Vista Ieee 1394 Device ProblemsKeyboard Problems For Windows XP Unexpected characters Lockups and Software ProblemsExternal keyboard problems Program stops responding or crashes repeatedly Other software problemsComputer does not start up Computer stops responding General Memory ProblemsNetwork Problems If necessary, uninstall and then reinstall the program Power Problems PC Card or ExpressCard Problems Memory modules see Memory on Ensuring Sufficient Power for Your ComputerDocking Power Considerations Scanner Problems Printer Problems No sound from integrated speakers Sound and Speaker ProblemsTouch Pad or Mouse Problems No sound from headphones If the display is blank Video and Display Problems If only part of the display is readable If the display is difficult to read Overview System Setup ProgramViewing the System Setup Screens Changing the Boot Sequence System Setup ScreensCommonly Used Settings Changing COM Ports Performing a One-Time Boot System Setup Program Attach a name tag or business card to the computer Traveling With Your ComputerIdentifying Your Computer Packing the Computer Traveling by Air Travel Tips Identifying Drivers Reinstalling SoftwareWhat Is a Driver? Drivers Reinstalling Drivers and Utilities 101 Restoring Your Operating System 103 Using Microsoft Windows System Restore Ensure that Turn off System Restore is unchecked Using the Operating System CD 105 106 Turning Off Your Computer Adding and Replacing PartsBefore You Begin Recommended Tools Hard Drive Follow the procedures in Before You Begin on 108 109 Removing the Device Security Screw Media BayReturning a Hard Drive to Dell 111 Removing and Installing Media Bay Devices Hinge Cover 113 Keyboard Keyboard Keyboard screws 115 Memory Memory module 117 Memory module 119 Wireless CardsSubscriber Identity Module SIM Card Wireless Local Area Network Wlan Cards 121 Mobile Broadband or Wireless Wide Area Network Wwan Cards 123 FCM Flash Cache Module FCM card 125 Internal Card With Bluetooth Wireless Technology Coin-Cell Battery 127 128 129 Dell QuickSet 130 131 Specifications PC/SC 132 Lvds 133 134 135 136 137 138 139 Technical Support and Customer ServiceGetting Help Obtaining Assistance DellConnect Online Services 141 Problems With Your OrderAutoTech Service Automated Order-Status Service 142 Before You Call 143 Contacting DellFor customers in the United States, call 800-WWW-DELL Visit support.dell.com Touch Pad Cleaning Your ComputerAppendix Computer, Keyboard, and Display CDs and DVDs MouseFloppy Drive 147 Macrovision Product NoticeFCC Notice U.S. Only FCC Class B 148 149 Glossary 150 151 152 153 154 155 156 157 158 Video resolution See resolution