LG 42LM3400 Owner’s Manual

OWNER’S MANUAL

LED LCD TV

Please read this manual carefully before operating your set
and retain it for future reference.

32LM3400
42LM3400

P/NO : MFL67468167 (1209-REV00)

42LM3700

www.lg.com

2

WARNING/CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

Short-circuit

Breaker

Power Supply

Short-circuit

Breaker

Power Supply

IMPORTANT SAFETY INSTRUCTIONS

Always comply with the following precautions to avoid dangerous situations and ensure peak performance
of your product.

ENGLISH

IMPORTANT SAFETY INSTRUCTIONS

WARNING/CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER (OR BACK). NO
USER SERVICEABLE PARTS INSIDE. REFER
TO QUALIFIED SERVICE PERSONNEL.

The lightning flash with arrowhead
symbol, within an equilateral triangle,

is intended to alert the user to the
presence of uninsulated “dangerous voltage”
within the product’s enclosure that may be of
sufficient magnitude to constitute a risk of
electric shock to persons.

Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.

Do not use this apparatus near water.



Clean only with a dry cloth.



Do not block any ventilation openings. Install



in accordance with the manufacturer’s
instructions.

The exclamation point within an

equilateral triangle is intended to alert

the user to the presence of important
operating and maintenance (servicing)
instructions in the literature accompanying
the appliance.

WARNING/CAUTION

- TO REDUCE THE RISK OF FIRE AND
ELECTRIC SHOCK, DO NOT EXPOSE THIS
PRODUCT TO RAIN OR MOISTURE.

Do not install near any heat sources such



as radiators, heat registers, stoves, or other
apparatus (including amplifiers) that produce
heat.

Do not defeat the safety purpose of the



polarized or grounding-type plug. A polarized
plug has two blades with one wider than the
other. A grounding type plug has two blades
and a third grounding prong. The wide blade
or the third prong are provided for your safety.
If the provided plug does not fit into your
outlet, consult an electrician for replacement
of the obsolete outlet (Can differ by country).

IMPORTANT SAFETY INSTRUCTIONS

Short-circuit

Breaker

Power Supply

Short-circuit

Breaker

Power Supply

3

Protect the power cord from being walked on



or pinched particularly at plugs, convenience
receptacles, and the point where they exit
from the apparatus.

Only use attachments/accessories specified



by the manufacturer.

Use only with a cart, stand, tripod, bracket,



or table specified by the manufacturer, or
sold with the apparatus. When a cart is used,
use caution when moving the cart/apparatus
combination to avoid injury from tip-over.

Unplug this apparatus during lightning



storms or when unused for long periods of
time.

Refer all servicing to qualified service



personnel. Servicing is required when
the apparatus has been damaged in any
way, such as power-supply cord or plug is
damaged, liquid has been spilled or objects
have fallen into the apparatus, the apparatus
has been exposed to rain or moisture, does
not operate normally, or has been dropped.

Keep the packing anti-moisture material or



vinyl packing out of the reach of children.
Anti-moisture material is harmful if
swallowed. If swallowed by mistake, force
the patient to vomit and visit the nearest
hospital. Additionally, vinyl packing can
cause suffocation. Keep it out of the reach of
children.
CAUTION concerning the Power Cord



(Can differ by country):
It is recommended that appliances be
placed upon a dedicated circuit; that is, a
single outlet circuit which powers only that
appliance and has no additional outlets or
branch circuits. Check the specification page
of this owner’s manual to be certain. Do not
connect too many appliances to the same
AC power outlet as this could result in fire or
electric shock. Do not overload wall outlets.
Overloaded wall outlets, loose or damaged
wall outlets, extension cords, frayed power
cords, or damaged or cracked wire insulation
are dangerous. Any of these conditions could
result in electric shock or fire. Periodically
examine the cord of your appliance, and
if its appearance indicates damage or
deterioration, unplug it, discontinue use of
the appliance, and have the cord replaced
with an exact replacement part by an
authorized service. Protect the power cord
from physical or mechanical abuse, such as
being twisted, kinked, pinched, closed in a
door, or walked upon. Pay particular attention
to plugs, wall outlets, and the point where
the cord exits the appliance. Do not move
the TV with the power cord plugged in. Do
not use a damaged or loose power cord. Be
sure do grasp the plug when unplugging the
power cord. Do not pull on the power cord
to unplug the TV.

ENGLISH

Do not stick metal objects or any other



conductive material into the power cord. Do
not touch the end of the power cord while it
is plugged in.

IMPORTANT SAFETY INSTRUCTIONS

4

ENGLISH

Warning



- To reduce the risk of fire or
electrical shock, do not expose this product
to rain, moisture or other liquids. Do not
touch the TV with wet hands. Do not install
this product near flammable objects such
as gasoline or candles, or expose the TV to
direct air conditioning.

Do not expose to dripping or splashing and



do not place objects filled with liquids, such
as vases, cups, etc. on or over the apparatus
(e.g. on shelves above the unit).

Grounding



(Except for devices which are not grounded.)
Ensure that you connect the earth ground
wire to prevent possible electric shock
(i.e. a TV with a three-prong grounded AC
plug must be connected to a three-prong
grounded AC outlet). If grounding methods
are not possible, have a qualified electrician
install a separate circuit breaker. Do not try to
ground the unit by connecting it to telephone
wires, lightening rods, or gas pipes.

Short-circuit

Breaker

Power Supply

As long as this unit is connected to the AC



wall outlet, it is not disconnected from the
AC power source even if the unit is turned
off.
Do not attempt to modify this product in any



way without written authorization from LG
Electronics. Unauthorized modification could
void the user’s authority to operate this
product.

ANTENNAS Outdoor antenna grounding



(Can differ by country):
If an outdoor antenna is installed, follow
the precautions below. An outdoor antenna
system should not be located in the vicinity
of overhead power lines or other electric light
or power circuits, or where it can come in
contact with such power lines or circuits as
death or serious injury can occur. Be sure the
antenna system is grounded so as to provide
some protection against voltage surges
and built-up static charges. Section 810 of
the National Electrical Code (NEC) in the
U.S.A. provides information with respect to
proper grounding of the mast and supporting
structure, grounding of the lead-in wire to
an antenna discharge unit, size of grounding
conductors, location of antenna discharge
unit, connection to grounding electrodes and
requirements for the grounding electrode.

Antenna grounding according to the National
Electrical Code, ANSI/NFPA 70

Antenna Lead in Wire

DISCONNECTING DEVICE FROM THE MAIN



POWER

Mains plug is the disconnecting device. The
plug must remain readily operable.

Ground Clamp

Electric Service

Equipment

Ground Clamp

NEC: National Electrical Code

Antenna Discharge Unit
(NEC Section 810-20)

Grounding Conductor
(NEC Section 810-21)

Power Service Grounding
Electrode System
(NEC Art 250, Part H)

IMPORTANT SAFETY INSTRUCTIONS

Short-circuit

Breaker

Power Supply

5

Cleaning



When cleaning, unplug the power cord and
wipe gently with a soft cloth to prevent
scratching. Do not spray water or other
liquids directly on the TV as electric shock
may occur. Do not clean with chemicals
such as alcohol, thinners or benzine.

Moving



Make sure the product is turned off,
unplugged and all cables have been
removed. It may take 2 or more people to
carry larger TVs. Do not press or put stress
on the front panel of the TV.

Ventilation



Install your TV where there is proper
ventilation. Do not install in a confined
space such as a bookcase. Do not cover the
product with cloth or other materials while
plugged. Do not install in excessively dusty
places.
If you smell smoke or other odors coming



from the TV, unplug the power cord and
contact an authorized service center.
Do not press strongly upon the panel with a



hand or a sharp object such as a nail, pencil
or pen, or make a scratch on it.
Keep the product away from direct sunlight.



Never touch this apparatus or antenna during



a thunder or lightning storm.
When mounting a TV on the wall, make sure



not to install the TV by hanging the power
and signal cables on the back of the TV.
Do not allow an impact shock or any objects



to fall into the product, and do not drop
anything onto the screen.

Dot Defect



The Plasma or LCD panel is a high
technology product with resolution of two
million to six million pixels. In a very few
cases, you could see fine dots on the screen
while you’re viewing the TV. Those dots
are deactivated pixels and do not affect the
performance and reliability of the TV.

Generated Sound



“Cracking” noise: A cracking noise that
occurs when watching or turning off the TV
is generated by plastic thermal contraction
due to temperature 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 high­speed 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.
Take care not to touch the ventilation



openings. When watching the TV for a long
period, the ventilation openings may become
hot. This does not affect the performance of
the product or cause defects in the product.
If the TV feels cold to the touch, there may



be a small “flicker” when it is turned on. This
is normal, there is nothing wrong with TV.
Some minute dot defects may be visible on
the screen, appearing as tiny red, green, or
blue spots. However, they have no adverse
effect on the TV’s performance. Avoid
touching the LCD screen or holding your
finger(s) against it for long periods of time.
Doing so may produce some temporary
distortion effects on the screen.

ENGLISH

6

The fluorescent lamp used in this product contains
a small amount of mercury. Do not dispose of this
product with general household waste. Disposal of
this product must be carried out in accordance to
the regulations of your local authority.

ENGLISH

IMPORTANT SAFETY INSTRUCTIONS

DISPOSAL (Hg lamp only used in LCD TVs)

Preventing “Image burn” or “Burn-in” on your TV screen

If a fixed image displays on the TV screen



for a long period of time, it will be imprinted
and become a permanent disfigurement on
the screen. This is “image burn” or “burn-in”
and not covered by the warranty.
If the aspect ratio of the TV is set to 4:3 for



a long period of time, image burn may occur
on the letterboxed area of the screen.
Avoid displaying a fixed image on the TV



screen for a long period of time (2 or more
hours for LCD, 1 or more hours for the
Plasma TV) to prevent image burn.

For USA and Canada

NOTE TO CABLE/TV INSTALLER

This reminder is provided to call the CATV system
installer’s attention to Article 820-40 of the
National Electric Code (U.S.A.). The code provides
guidelines for proper grounding and, in particular,
specifies that the cable ground shall be connected
to the grounding system of the building, as close
to the point of the cable entry as practical.

IMPORTANT SAFETY INSTRUCTIONS

Viewing 3D Imaging (For 3D models)

WARNING

Viewing Environment

Viewing Time



- When watching 3D contents, take 5 - 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, revise your eyesight prior to watching 3D



contents.

7

ENGLISH

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 fatigue.

8

ENGLISH

IMPORTANT SAFETY INSTRUCTIONS

CAUTION

Viewing Environment

Viewing Distance



- Maintain a distance of at least twice the screen diagonal length when watching 3D contents. If you
feel discomfort in viewing 3D contents, move further away from the TV.

Viewing Age

Infants / Children



- Usage/ Viewing 3D contents for children under the age of 5 are prohibited.

- Children under the age of 10 may overreact and become overly excited because their vision is in
development (for example: trying to touch the screen or trying to jump into it. Special monitoring and
extra attention is required for children watching 3D contents.

- Children have greater binocular disparity of 3D presentations than adults because the distance
between the eyes is shorter than one of adults. Therefore they will perceive more stereoscopic depth
compared to adults for the same 3D image.

Teenagers



- Teenagers under the age of 19 may be stimulated to light coming from 3D videos. Advise them not to
watch 3D videos for a long time when they are tired.

Elderly



- The elderly may perceive less of a 3D effect than the youth. Do not sit closer to the TV than the
recommended distance.

Cautions when using the 3D glasses

Make sure to use LG 3D glasses. Otherwise, you may not be able to view 3D videos properly.



Do not use 3D glasses instead of your normal glasses, sunglasses or protective goggles.



Using modified 3D glasses may cause eye strain or image distortion.



Do not keep your 3D glasses in extremely high or low temperatures. It will cause deformation.



The 3D glasses are fragile and are easy to be scratched. Always use a soft, clean piece of cloth when



wiping the lenses. Do not scratch the lenses of the 3D glasses with sharp objects or clean/wipe them
with chemicals.

LICENSES / OPEN SOURCE SOFTWARE NOTICE

LICENSES

Supported licenses may differ by model. For more information about licenses, visit 'www.lg.com'.

Manufactured under license from Dolby Laboratories. “Dolby” and the double-D
symbol are trademarks of Dolby Laboratories.

HDMI, the HDMI logo and High-Definition Multimedia Interface are trademarks or
registered trademarks of HDMI Licensing LLC.

ABOUT DIVX VIDEO: DivX® is a digital video format created by DivX, LLC, a
subsidiary of Rovi Corporation. This is an official DivX Certified® device that plays
DivX video. Visit divx.com for more information and software tools to convert your
files into DivX video.

ABOUT DIVX VIDEO-ON-DEMAND: This DivX Certified® device must be registered
in order to play purchased DivX Video-on-Demand (VOD) movies. To obtain your
registration code, locate the DivX VOD section in your device setup menu. Go to
vod.divx.com for more information on how to complete your registration.

9

“DivX Certified® to play DivX® video up to HD 1080p, including premium content.”

“DivX®, DivX Certified® and associated logos are trademarks of Rovi Corporation
or its subsidiaries and are used under license.”

“Covered by one or more of the following U.S. patents:
7,295,673; 7,460,668; 7,515,710; 7,519,274”

OPEN SOURCE SOFTWARE NOTICE

To obtain the source code under GPL, LGPL, MPL and other open source licenses, that is contained in this
product, please visit 'http://opensource.lge.com'.

In addition to the source code, all referred license terms, warranty disclaimers and copyright notices are
available for download.

LG Electronics will also provide open source code to you on CD-ROM for a charge covering the cost of
performing such distribution (such as the cost of media, shipping and handling) upon email request to
[e-mail]. This offer is valid for three (3) years from the date on which you purchased the
product.

ENGLISH

TABLE OF CONTENTS

10

TABLE OF CONTENTS

2 IMPORTANT SAFETY INSTRUCTIONS

7 Viewing 3D Imaging (For 3D models)

9 LICENSES

9 OPEN SOURCE SOFTWARE NOTICE

10 TABLE OF CONTENTS

11 INSTALLATION PROCEDURE

11 ASSEMBLING AND PREPARING

11 Unpacking
13 Optional Extras
14 Parts and buttons
15 Lifting and moving the TV
16 Setting up the TV

ENGLISH

16 - Attaching the stand
18 - Mounting on a table
19 - Tidying cables
20 - Mounting on a wall

21 MAKING CONNECTIONS

21 Connecting to an antenna or cable
22 Connecting to a HD receiver, DVD, or VCR

22 - HDMI Connection
23 - Component Connection
24 - Composite Connection

25 Connecting to a PC
25 - HDMI Connection

26 Connecting to an Audio System
26 - Digital Optical Audio Connection

27 Connecting to a Sound Bar
27 - Digital Optical Audio Connection

28 Connecting to a USB

player

29 REMOTE CONTROL

33 WATCHING TV

33 Turning the TV on for the first time

34 USING THE USER GUIDE

35 SPECIFICATIONS

37 MAINTENANCE

37 Cleaning Your TV
37 - Screen, frame, cabinet and stand
37 - Power cord

37 TROUBLESHOOTING

NOTE

Image shown may differ from your TV.



Your TV’s OSD (On Screen Display) may



differ slightly from that shown in this
manual.
The available menus and options may differ



from the input source or product model that
you are using.
New features may be added to this TV in



the future.

INSTALLATION PROCEDURE / ASSEMBLING AND PREPARING

INSTALLATION PROCEDURE

Open the package and make sure all the accessories are included.

1

Attach the stand to the TV set.

2

Connect an external device to the TV set.

3

ASSEMBLING AND PREPARING

Unpacking

Check your product box for the following items. If there are any missing accessories, contact the local
dealer where you purchased your product. The illustrations in this manual may differ from the actual
product and item.

CAUTION

Do not use any unapproved items to ensure the safety and product life span.



Any damages or injuries by using unapproved items are not covered by the warranty.



In case of some model, the thin film on screen is a part of TV, So don’t take it off.



Power Cord Installation Guide



-If the power cord provided with the TV looks like the below picture, please ensure that it is inserted
in the correct direction.

11

ENGLISH

TV

Correct WrongPower Cord

NOTE

The items supplied with your product may vary depending on the model.



Product specifications or contents of this manual may be changed without prior notice due to



upgrade of product functions.
For an optimal connection, HDMI cables and USB devices should have bezels less than 10 mm (0.39



inches) thick and 18 mm (0.7 inches) width.
Use an extension cable that supports USB 2.0 if the USB cable or USB memory stick does not fit



into your TV's USB port.

B

A

*A 10 mm (0.39 inches)
*B 18 mm (0.7 inches)

B

A

ASSEMBLING AND PREPARING

12

ENGLISH

(For LM3400 series)

AV MODE

INPUT

ENERGY

TV

SAVING

1 2 3

4 5 6

7 809

FLASHBK

LIST

MARK

FAV

P
A
G

3D

CHVOL

E

MUTE

INFO

MENU

Q.MENU

ENTER

EXIT

BACK

L/R SELECT

FREEZE

RATIO

Remote control,
Batteries (AAA)

(See p.29)

Stand Body

(See p.16)

(For LM3700 series)

AV MODE

INPUT

ENERGY

TV

SAVING

1 2 3

4 5 6

7 809

FLASHBK

LIST

MARK

FAV

P
A
G

3D

CHVOL

E

MUTE

INFO

MENU

Q.MENU

ENTER

EXIT

BACK

L/R SELECT

FREEZE

RATIO

Remote control,
Batteries (AAA)

(See p.31)

Stand Base

(See p.16)

Owner’s manual

Stand Screws

8 EA, M4 x 20
(See p.16)

Protection cover

(See p.17)

Cinema 3D Glasses

The number of 3D glasses
may differ depending on the
model or country.

Desk-mount Screw

(See p.18)

(For 42LM3700)

Sound Bar

(See p.27)

Power Cord