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Proline L3233HD Manual Del Usuario página 33

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Troubleshooting Guide
Multiplex
DVB-T (Digital Video Broadcasting - Terrestrial) is broadcast in groups of channels on
one common frequency. This arrangement is known as a Multiplex. There are several
multiplexes in the DVB-T system, each carrying a group of channels. If the signal level
on a particular multiplex frequency is poor you may lose the whole group of channels
on that multiplex.
Symptoms
Picture is the wrong size or
the source device
(computer, DVD player,
set top box and so on) will
not let you set up the pixel
resolution the display can
reproduce.
Picture looks squashed or
stretched even though the
aspect ratio controls are
set correctly (for example
4:3 or 16:9).
No picture.
No sound
Symptoms
Wrong functions or short
range.
General
Possible causes
Source device has not
read the set-up data from
the display.
Connecting cable does not
have all the necessary
connections.
Equipment feeding the
display is set to the wrong
aspect ratio.
Brightness and contrast
levels are set to minimum.
The volume is set to
minimum.
The mute is switched on.
Remote
Possible causes
Batteries exhausted.
Obstacle in the way.
31
What to do
Avoid old cables and
adapter devices. Use only
modern cables.
Re-start the source device
after connecting and
powering up the display.
Change the graphics
adapter in your computer.
Check compatible video
resolutions given in these
instructions.
On the equipment feeding
the TV choose the correct
output aspect ratio such as
4:3 (old conventional) or
16:9 or 1280 x 720 or 1920
x 1080 pixels to match
wide screens.
Increase the brightness
and contrast settings.
Turn the volume up.
Press the mute button to
release 'mute'.
What to do
Insert new batteries.
Remove any objects and
aim from straight in front of
the remote sensor with a
clear line of sight.

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