LG 42LH90 Series User manual

Order Number : GETEC-C1-09-046 FCC Class B Certification
Test Report Number : GETEC-E3-09-030 Page 1 / 1
EUT Type: LCD TV/Monitor
FCC ID.: BEJ55LH90UB
APPENDIX H
: USER’S MANUAL

Please read this manual carefully before operating
your set and retain it for future reference.
The model and serial number of the TV is located
on the back and one side of the TV.
Record it below should you ever need service.
LCD TV
WNER’S MANUAL
42LH90
47LH90
55LH90
P/NO : SAC33601906 (0902-REV00)
www.lgusa.com / www.lg.ca
This product qualifies for ENERGY STAR in the “factory
default (Home Use ” setting and this is the setting in which
power savings will be achieved.
Changing the factory default picture setting or enabling other
features will increase power consumption that could exceed
the limits necessary to quality for Energy Star rating.
Model:
Serial:
1-800-243-0000 USA, Consumer User
1-888-865-3026 USA, Commercial User
1-888-542-2623 CANADA
LG Customer nformation Center

2
ARNING / CAUTION
WARNING / CAUTION
To prevent fire or shock hazards, do not expose
this product to rain or moisture.
FCC NOTICE
Class B digital device
This equipment has been tested and found to comply
with the limits for a Class B digital device, pursuant to
Part 15 of the FCC ules. These limits are designed
to provide reasonable protection against harmful
interference in a residential installation. This equipment
generates, uses and can radiate radio frequency energy
and, if not installed and used in accordance with the
instructions, may cause harmful interference to radio
communications. However, there is no guarantee that
interference will not occur in a particular installation.
If this equipment does cause harmful interference to
radio or television reception, which can be determined
by turning the equipment off and on, the user is
encouraged to try to correct the interference by one
or more of the following measures:
- eorient or relocate the receiving antenna.
- Increase the separation between the equipment and
receiver.
- Connect the equipment to an outlet on a circuit
different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV
technician for help.
Any changes or modifications not expressly approved
by the party responsible for compliance could void
the user’s authority to operate the equipment.
CAUTION
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
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.
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 litera-
ture accompanying the appliance.
TO REDUCE THE RISK OF ELECTRIC SHOCK
DO NOT REMOVE COVER (OR BACK . NO
USER SERVICEABLE PARTS INSIDE. REFER TO
QUALIFIED SERVICE PERSONNEL.
ARNING/CAUTION
TO REDUCE THE RISK OF FIRE AND ELECTRIC
SHOCK, DO NOT EXPOSE THIS PRODUCT TO
RAIN OR MOISTURE.
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.

3
IMPORTANT SAFETY INSTRUCTIONS
SAFETY INSTRUCTIONS
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings. Install in
accordance with the manufacturer’s instructions.
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.
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 the 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 com-
bination to avoid injury from tip-over.
Unplug this apparatus during lighting storms
or when unused for long periods of time.
efer 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.
1
2
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7
8
6
9
10

4
SAFETY INSTRUCTIONS
Never touch this apparatus or antenna during
a thunder or lighting storm.
When mounting a TV on the wall, make sure
not to install the TV by the hanging 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 onto the
screen with something.
CAUTION concerning the Power Cord:
It is recommend 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
servicer. 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 make 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.
WA NING - 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).
GGOOUUNNDDIINNGG
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 out-
let). 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.
DDIISSCCOONNNNEECCTTIINNGG DDEEVVIICCEE FFOOMM MMAAIINNSS
Mains plug is the disconnecting device. The
plug must remain readily operable.
As long as this unit is connected to the AC wall
outlet, it is not disconnected from the AC
power source even if you turn off this unit by
SWITCH.
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Power
Supply
Short-circuit
Breaker
15

5
AANNTTEENNNNAASS
OOuuttddoooorr aanntteennnnaa ggrroouunnddiinngg
If an outdoor antenna is installed, follow the
precautions below. An outdoor antenna system
should not be located in the vicinity of over-
head 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 dis-
charge unit, connection to grounding elec-
trodes and requirements for the grounding
electrode.
AAnntteennnnaa ggrroouunnddiinngg aaccccoorrddiinngg ttoo tthhee
NNaattiioonnaall EElleeccttrriiccaall CCooddee,, AANNSSII//NNFFPPAA 7700
CClleeaanniinngg
When cleaning, unplug the power cord and
scrub 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 benzene.
MMoovviinngg
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 against or put stress on the front
panel of the TV.
VVeennttiillaattiioonn
Install your TV where there is proper ventila-
tion. Do not install in a confined space such as
a bookcase. Do not cover the product with
cloth or other materials (e.g.) plastic while
plugged in. Do not install in excessively dusty
places.
If you smell smoke or other odors coming from
the TV or hear strange sounds, unplug the power
cord contact an authorized service center.
Do not press strongly upon the panel with
hand or sharp object such as nail, pencil or
pen, or make a scratch on it.
Keep the product away from direct sunlight.
FFoorr LLCCDD TTVV
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 monitor'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 dis-
tortion effects on the screen.
20 23
24
25
26
27
21
22
Antenna Lead in Wire
Antenna Discharge Unit
(NEC Section 810-20)
Grounding Conductor
(NEC Section 810-21)
Ground Clamps
Power Service Grounding
Electrode System (NEC
Art 250, Part H)
Ground Clamp
Electric Service
Equipment
NEC: National Electrical Code

6
CONTENTS
ARNING / CAUTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
SAFETY INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . 3
FEATURE OF THIS TV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
PREPARATION
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Front Panel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Back Panel Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Media Box installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Stand Instruction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
VESA Wall Mounting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Cable Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Desktop Pedestal Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Swivel Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Attaching the TV to a Desk . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Kensington Security System . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Securing the TV to the wall to prevent falling when
the TV is used on a stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Antenna or Cable Connection . . . . . . . . . . . . . . . . . . . . . . . . . . 22
EXTERNAL EQUIPMENT SETUP
HD eceiver Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
DVD Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
VC Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
Other A/V Source Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
PC Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
USB Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Audio out Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
ATCHING TV / CHANNEL CONTROL
emote Control Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42
Turning On TV . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44
Channel Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Volume Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Initial Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
On-Screen Menus Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
Quick Menu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
Channel Setup
- Auto Scan (Auto Tuning) . . . . . . . . . . . . . . . . . . . . . . . . . . . 50
- Add / Delete Channel (Manual Tuning) . . . . . . 51
- Channel Editing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Channel List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
Favorite Channel Setup / Favorite Channel List . . 54
Brief Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 55
Input List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 56
Input Label . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
AV Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Simple Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Key Lock . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59
SIMPLINK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60
USB
Entry Modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 62
Photo List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Music List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Movie List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 70
Divx egistration Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 74
Deactivation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 75
PICTURE CONTROL
Picture Size (Aspect atio) Control . . . . . . . . . . . . . . . . . . 76
Picture Wizard . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
Preset Picture Settings (Picture Mode) . . . . . . . . . . . . . 80
Manual Picture Adjustment - User Mode . . . . . . . . . . 81
Picture Improvement Technology . . . . . . . . . . . . . . . . . . . . . 82
Expert Picture Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 83
Energy Saving . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 86
Picture eset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 87
Power Indicator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Demo Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 89
Local Dimming . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 90
Local Dimming Demo . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 91

7
SOUND & LANGUAGE CONTROL
Auto Volume Leveler (Auto Volume) . . . . . . . . . . . . . . . . . 92
Clear Voice II . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 93
Preset Sound Setting (Sound Mode) . . . . . . . . . . . . . . . . 94
Sound Setting Adjustment - User Mode . . . . . . . . . . . 95
Balance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96
TV Speakers On/Off Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
Audio eset . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
Stereo/SAP Broadcasts Setup . . . . . . . . . . . . . . . . . . . . . . . . . . 99
Audio Language . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 0
On-Screen Menus Language Selection . . . . . . . . . . . . 101
Caption Mode
- Analog Broadcasting System Captions . . . . . 102
- Digital Broadcasting System Captions . . . . . . 103
- Caption Option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 4
TIME SETTING
Clock Setting
- Auto Clock Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 105
- Manual Clock Setup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 6
Auto On/Off Time Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . 107
Sleep Timer Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 8
PARENTAL CONTROL / RATINGS
Set Password & Lock System . . . . . . . . . . . . . . . . . . . . . . . . . . 109
Channel Blocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 112
Movie & TV ating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
Downloadable ating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 118
External Input Blocking . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 119
APPENDIX
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 120
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 122
Product Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 123
I Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125
External Control Through S-232C . . . . . . . . . . . . . . . . .126
Open Source License . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .132

8
FEATURE OF THIS TV
■
When a fixed image (e.g. logos, screen menus, video game, and computer display) is displayed on the TV
for an extended period, it can become permanently imprinted on the screen. This phenomenon is known
as “image burn” or “burn-in.” Image burn is not covered under the manufacturer’s warranty.
■
In order to prevent image burn, avoid displaying a fixed image on your TV screen for a prolonged period
(2 or more hours for LCD, 1 or more hours for Plasma TV).
■
Image burn can also occur on the letterboxed
areas of your TV if you use the 4:3 aspect
ratio setting for an extended period.
IMPORTANT INFORMATION TO PREVENT “IMAGE BURN
/ BURN-IN” ON YOUR TV SCREEN
The AV Mode optimizes the picture into Cinema,
Sports, and game Mode according to the video and
audio content. The viewer has the ability to quickly
choose the correct mode for the picture they are
viewing.
Displays HDTV programs in full 1920 x 1080p resolu-
tion for a more detailed picture.
Automatically enhances and amplifies the sound of
human voice frequency range to help keep dialogue
audible when background noise swells.
LG TV include a unique invisible speaker system,
tuned by renowned audio expert, Mr. Mark Levinson.
Speakers are embedded in strategic spots behind the
front cabinet and use minute vibrations to turn the
entire front bezel into the speaker system. The result
is a clean, polished look, and enhanced audio by
increasing the “sweet spot”, giving a wider and richer
sound field.
HDMITM, the HDMI logo and High-Definition
Multimedia Interface are trademarks or registered
trademarks of HDMI Licensing."
is a trademark of S S Labs, Inc.
TruSurround XT technology is incorporated under
license from S S Labs, Inc.
Manufactured under license from Dolby Laboratories.
“ Dolby “and the double-D symbol are trademarks of
Dolby Laboratories.
This TV contains the detailed calibrations necessary
for professional certification by the Imaging Science
Foundation. The resulting ISF “day” and “night” modes
will then be accessible by the user to experience the
best their LG HDTV has to offer.
CALIB ATE LIKE A P O: Sophisticated and detailed
calibrations can be made through the ISFccc mode.
Detailed calibration requires a licensed technician.
Please contact your local dealer to inquire about an
ISF certified technician.
High-definition television. High-resolution digital
television broadcast and playback system composed
of roughly a million or more pixels, 16:9 aspect-ratio
screens, and AC3 digital audio. A subset of digital
television, HDTV formats include 1080i and 720p
resolutions.

PREPARATION
9
ACCESSORIES
PREPARATION
Ensure that the following accessories are included with your TV. If an accessory is missing, please contact the
dealer where you purchased the TV.
The accessories included may differ from the images below.
1.5V 1.5V
Owner’s Manual Power Cord
Remote Control,
Batteries
FAV
MARK
MUTE
MENUQ.MENU
POWER
AV
MODE
123
45
0
6
789
P
A
G
E
INPUT
VOLCH
LIST
INFO
RETURN
FLASH
BACK
ENERGYSAVING
ENTER
CD Manual
OOppttiioonn EExxttrraass
* Wipe spots on the exterior only with
the polishing cloth.
* Do not wipe roughly when removing
stain. Excessive pressure may cause
scratch or discoloration.
Polishing Cloth
Not included with all models
D-sub 15 pin Cable
When using the VGA (D-sub 15 pin
cable) PC connection, the user
must use shielded signal interface
cables with ferrite cores to maintain
standards compliance.
Protection Cover
Bolts for stand assembly
(Refer to P.12
Screw for stand fixing
(Refer to P.17
x 4
(For 42/47LH90 (For 42LH90