78
appenDix
ap
pe
n
D
ix
the audio function does not work.
picture oK & no
sound
■ Check whether the tV is switched on.
■ press the
+
or
-
button.
■ sound muted? press mute button.
■ try another channel. the problem may be with the broadcast.
■ are the audio cables installed properly?
no output from one
of the speakers
■ adjust
balance
in menu option.
unusual sound from
inside the tV
■ a change in ambient humidity or temperature may result in an unusual noise when
the tV is switched on or off and does not indicate a fault with the tV.
no sound when con-
necting HDmi or usB
■ Check HDmi cable is High speed HDmi Cable.
■ Check usB cable over version 2.0.
there is a problem in pc mode. (only pc mode applied)
the signal is out of
range
(invalid format)
■ adjust resolution, horizontal frequency, or vertical frequency.
■ Check the input source.
Vertical bar or stripe on
background &
Horizontal noise &
incorrect position
■ use auto configure or adjust size, phase, or H/V position. (option)
screen colour is
unstable or single
colour
■ Check the signal cable.
■ reinstall the pC video card.
there is a problem with pictURe settings.
When the user chang-
es the picture settings,
the tV automatically
converts back to the
initial settings after a
certain period of time.
■ it means that the tV is currently set to
Store Demo
mode.
to switch to
home use
mode you should do the followings: From the tV
menu, choose
option
->
Choose
mode Setting
-> Choose
home use
.
now, you have completed switching to the
home use
mode.
*this feature is not available for all models.
