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ViewSonic 21 N3290w/N4290p/ N4790p
Button Description
15 Subtitle
Press to select Off or On function of
subtitle, when the input source is
available for subtitle.
16 Index
Press to return to page 100 or the index
page; and then press 0 to 9. The teletext
page will be numbered and added to the
page you select or the secondary item.
17 HDMI
To Select HDMI device.
18 Video
Switch source between Component 1,
Component 2, AV 1, AV 2 (Side),
S-Video.
19 Mute
Press to turn off the sound. To restore
the sound, press this button again, or
press the VOL+ button.
20 Source
Press to display the INPUT source list
and select the source with PR +/- button.
To confirm the selection, press OK.
21 Pre PR
Press to return to previous program.
22 Exit
Press to exit the OSD (On-Screen
Display) menu.
23 Display
Press this button to display the current
state of the LCD TV.
24 PR +/-
Press to change the channels up or
down.
25 Dual
Select MONO, STEREO, DUAL 1, and
DUAL 2 for ATV channel. Select Audio
languages for DTV channel.
26 Size
Press to change the font size: Full
screen, Top half and Bottom half.
27 Subpage
To select the subpage when the current
page contains subpage(s).
28 Hold
Press to stop the scrolling of pages. The
text decoder stops receiving data.
29 Reveal
Reveal hidden information such as
answers to a quiz.
30 PC
To select PC device.
31 TV
To select TV device.