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LG 43UF640V Owner's Manual page 7

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You may find different brightness and color of the panel depending on
your viewing position(left/right/top/down).
This phenomenon occurs due to the characteristic of the panel. It is not
related with the product performance, and it is not malfunction.
Displaying a still image (e.g., broadcasting channel logo, on-screen
menu, scene from a video game) for a prolonged time may cause
damage to the screen, resulting in retention of the image, which is
known as image sticking. The warranty does not cover the product for
image sticking.
Avoid displaying a fixed image on your television's screen for a
prolonged period (2 or more hours for LCD, 1 or more hours for Plasma).
Also, if you watch the TV at a ratio of 4:3 for a long time, image sticking
may occur on the borders of the panel.
This phenomenon also occurs in third-party products and is not subject
to exchange or refund.
Generated Sound
"Cracking" noise: A cracking noise that occurs when watching or turning
off the TV is generated by plastic thermal contraction due to tempera-
ture and humidity. This noise is common for products where thermal
deformation is required. Electrical circuit humming/panel buzzing:
A low level noise is generated from a high-speed switching circuit,
which supplies a large amount of current to operate a product. It varies
depending on the product.
This generated sound does not affect the performance and reliability
of the product.
Do not use high voltage electrical goods near the TV (e.g. electric
mosquito-swatter). This may result in product malfunction.
Viewing 3D imaging (Only 3D
Viewing Environment
•  Viewing Time
- When watching 3D contents, take 5 to 15 minute breaks every
hour. Viewing 3D contents for a long period of time may cause
headache, dizziness, fatigue or eye strain.
Those that have a photosensitive seizure or
chronic illness
•  Some users may experience a seizure or other abnormal symptoms
when they are exposed to a flashing light or particular pattern
from 3D contents.
•  Do not watch 3D videos if you feel nausea, are pregnant and/ or
have a chronic illness such as epilepsy, cardiac disorder, or blood
pressure disease, etc.
•  3D Contents are not recommended to those who suffer from stereo
blindness or stereo anomaly. Double images or discomfort in
viewing may be experienced.
•  If you have strabismus (cross-eyed), amblyopia (weak eyesight) or
astigmatism, you may have trouble sensing depth and easily feel
fatigue due to double images. It is advised to take frequent breaks
than the average adult.
•  If your eyesight varies between your right and left eye, correct your
eyesight prior to watching 3D contents.
Symptoms which require discontinuation or
refraining from watching 3D contents
•  Do not watch 3D contents when you feel fatigue from lack of sleep,
overwork or drinking.
•  When these symptoms are experienced, stop using/watching 3D
contents and get enough rest until the symptom subsides.
- Consult your doctor when the symptoms persist. Symptoms may
include headache, eyeball pain, dizziness, nausea, palpitation,
blurriness, discomfort, double image, visual inconvenience or

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