Dell Inspiron 3700 Reference Manual page 18

<Num Lk>
<Fn><key>
<Fn><Shift><key>
<Shift><cursor key>
When Keypad Is Off
<Num Lk>
<Fn><cursor key>
Key Combinations
Display Key Combinations
NOTE: When using the integrated keyboard, you press <Fn> and the appropriate keys to perform certain functions (see
Table 2). To perform such functions on an external keyboard, you press <Scroll Lock> and the appropriate keys. You
must be sure that the External Hot Key option is enabled in the System Setup program.
Use the key combinations in Table 2
NOTE: The display key combinations function for super-twist nematic (STN) displays only.
Table 2. Display Key Combinations
Key Function
Combinations
<Fn> + down Incrementally decreases brightness.
arrow
<Fn> + up arrow Incrementally increases brightness.
<Fn> + right arrow Decreases contrast, which has no effect on an active-matrix display.
<Fn> + left arrow Increases contrast, which has no effect on an active-matrix display.
<Fn><F5> Toggles the computer's display between regular video mode and reverse video mode (white on black). This key
combination works only if the computer is in text mode; it has no effect if the computer is running a graphical operating
system or application program.
<Fn><F7> Toggles the computer's display between expanded mode and regular video mode.
<Fn><F8> Switches the video image to the next display in the following sequence: the display, an external monitor, or both the display
and the monitor simultaneously. This key combination may not be supported under certain conditions.
<Fn><d>
Turns off the display. This key combination may not be supported under certain conditions.
1
The extended desktop feature (the ability to simultaneously display video of the same content and resolution on both the
computer display screen and the external monitor) is not supported if the computer is booted to MS-DOS®, using a full-screen
MS-DOS session under a Microsoft Windows operating system, or the ATI Mobility M1 video driver is not loaded. This
limitation may also be noted in operating systems other than Microsoft Windows.
2
Certain key combinations may not function with the Advanced Configuration and Power Interface (ACPI) or may require
configuration with the Power Management Properties window in the Control Panel. See
Power Conservation Key Combinations
NOTE: When using the integrated keyboard, you press <Fn> and the appropriate keys to perform certain functions (see
Table 3). To perform such functions on an external keyboard, you press <Scroll Lock> and the appropriate keys. You
must be sure that the External Hot Key option is enabled in the System Setup program.
Use the key combinations in Table 3
Table 3. Power Conservation Key Combinations
Key Combinations
Toggles the embedded numeric keypad off
Temporarily disables the embedded numeric keypad; enables the
lowercase characters/functions of the keyboard
Temporarily disables the embedded numeric keypad; enables the
uppercase characters/functions of the keyboard
Temporarily enables a cursor-control key in the embedded numeric
keypad
Function
Toggles the embedded numeric keypad on
Temporarily enables a cursor-control key in the embedded numeric
keypad
to adjust the computer's display.
to activate or turn off the computer's power conservation features.
Function
1
2
"Power Conservation."