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2.4.7.1 Special Function by "Fn" + main Function
The "Fn" key is used in combination with other keys to type special
characters and perform system functions.
Table 2.5: Special Function key define
Key Sequence
Definition
Fn + Main
Function
Increase the LED backlight brightness of
display screen(Lighter)
Backlight
You must press
Increase
ness each time.
Decrease the LED backlight brightness of
display screen (darker)
You must press
Backlight
Decrease
brightness each time.
Move the cursor down one page. The
cursor will move continuously if button is
pressed continuously.
Page Down
You must press
each time.
Move the cursor up one page. The cursor
will move continuously if button is pressed
continuously.
You must press
Page Up
time.
Toggle the audio mute/on
You must press
Audio Mute
on audio function each time.
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key, then press
key to increase backlight bright-
key, then press
key to decrease backlight
key, then press
key to cursor down one page
key, then press
key to cursor up one page each
key, then press
key to enable audio mute or turn
Chapter 2
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