Lenovo IdeaCentre B540 User Manual page 32

Button Description
Teletext ON/OFF
Press the colored buttons to operate
the Teletext screen.
Press to return to the main index
page.
Press to hold the Teletext page when
viewing information. Press again to
return to automatic page update.
Press repeatedly to display the upper
part of the teletext screen, then the
lower part, and then to return to full
screen.
Press to reveal hidden words e.g. quiz
page answers. Press again to hide.
Electronic Programme Guide.
Not available on ATV models.
Change the screen size mode.
Change the video source of sub-picture.
Automatically shut off the TV at a preset time.
Not available on this model.
Note:
These buttons
are usable with
TV Tuner cards
installed and in
countries that
support Teletext
functions only.
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User Guide