Dell Latitude 5420 Rugged Service Manual page 15

Table 1. Keyboard shortcuts
Hot keys
Fn+ESC
Fn+F1
Fn+F2
Fn+F3
Fn+F4
Fn+F5
Fn+F6
Fn+F7
Fn+F8
Fn+F9
Fn+F10
Fn+F11
Fn+F12
Fn+PrintScreen
Fn+Insert
Function
Fn Lock
Audio Volume Mute
Audio Volume Down/Decrease
Audio Volume Up/Increase
Microphone Mute
Num lock
Scroll lock
Stealth Mode
LCD and Projector display
Search
KB Illumination/Backlight
Brightness Decrease
Brightness Increase
Radio On/Off
Sleep
Description
Allows the user to toggle between
locked and unlocked Fn keys.
Temporarily mutes/unmutes the
audio. The audio level before muting
is returned after unmuting.
Decreases the audio volume until
minimum/off is reached.
Increases the audio volume until
maximum is reached.
Silences the on-board microphone so
it cannot record audio. There is an
LED on the F4 function key that
notifies the user of the state of this
feature:
• LED off = microphone capable of
recording audio
• LED on = microphone muted and
unable to record audio
Allows the user to toggle between
locked and unlocked NumLock
Used as Scroll Lock key.
Allows the user to toggle to and from
Stealth Mode
Determines video output to LCD and
external Video devices when
attached and displays present.
Mimics the Windows key + F
keystroke to open Windows Search
dialog box.
Determines the Keyboard
Illumination/Backlight brightness
level. The hot key cycles through the
following brightness states when
pressed: Disabled, Dim, Bright. For
more detail, see Keyboard
Illumination/Backlight section.
Decreases the stepping of LCD
brightness for each press until
minimum is reached. For details, see
the LCD Brightness section.
Increases the stepping of LCD
brightness for each press until
maximum is reached. For details, see
the LCD Brightness section.
Toggles all the wireless radios on and
off. For example, WLAN, WWAN, and
Bluetooth.
Puts the system into the ACPI S3
State and does not wake the system.
Technology and components 15