Dell Latitude XT (Late 2007) - Manual (Page 88)

88 Setting Up and Using Your Tablet-PC
Adjusting Brightness on the LED Backlit Thin-and-Light LCD
When a Dell Tablet-PC equipped with the LED backlit thin-and-light LCD
display is running on battery power, you can conserve power by setting the
display brightness to the lowest comfortable setting by pressing <Fn> and
the up- or down-arrow key on the keyboard.
NOTE: Brightness key combinations only affect the display on your Tablet-PC, not
monitors or projectors that you attach to your Tablet-PC or docking device. If your
Tablet-PC is connected to an external monitor and you try to change the brightness
level, the Brightness Meter may appear, but the brightness level on the external
device does not change.
You can press the following keys to adjust display brightness:
• Press <Fn> and the up-arrow key to increase brightness on the integrated
display only (not on an external monitor).
• Press <Fn> and the down-arrow key to decrease brightness on the
integrated display only (not on an external monitor).
NOTE: If your operating system display default is set to a specific value, you may
have to reset your manual selections after using sleep, standby, or hibernate mode.
Adjusting Brightness on the Dual-bulb (CCFL) LCD
The Dual-bulb LCD includes an integrated ambient light sensor (see "Front
View" on page 27).
1 ambient light sensor
1
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