Owner's Manual
IPS LED MONITOR
(LED MONITOR)
Please read the safety information carefully before using the
product.
IPS LED Monitor (LED Monitor) Model List
25UM55
25UB55
29UM55
29UB55
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LICENSE
3
LICENSE
The terms HDMI and HDMI High-Definition Multimedia Interface, and the
HDMI logo are trademarks or registered trademarks of HDMI Licensing LLC
in the United States and other countries.
VESA, VESA logo, Display Port Compliance Logo and Display Port
Compliance Logo for dual-mode source are all registered trademarks of the
Video Electronics Standards Association.
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4
ASSEMBLING AND PREPARING
ASSEMBLING AND PREPARING
Product Components
Please check whether all the components are included in the box before using the product. If there are
missing components, contact the retail store where you purchased the product. Note that the product and
components may look different from those shown here.
User Manual/Card
Power Cord
AC/DC Adapter
HDMI Cable
25UB55
29UB55
OPTIONAL ACCESSORIES
Display Port Cable
The DisplayPort cable may not
y y
Stand Base
One Screw
be available in some areas.
Cable Holder
Stand Base
Stand Body
Screws
Screw Cover
Screw Cover
Screws
Stand Body
Stand Base
CAUTION
Always use genuine components to ensure safety and product performance.
y y
The product warranty will not cover damage or injury caused by the use of counterfeit components.
y y
NOTE
Note that the components may look different from those shown here.
y y
Without prior notice, all information and specifications in this manual are subject to change to im-
y y
prove the performance of the product.
To purchase optional accessories, visit an electronics store or online shopping site or contact the
y y
retail store where you purchased the product.
The DisplayPort cable may not be available in some areas.
y y
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ASSEMBLING AND PREPARING
5
Component and Button Description
Power Indicator
On: power is on
y y
Off: power is off
y y
(Power Button)
Ports
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6
ASSEMBLING AND PREPARING
29UM55
Power Indicator
On: power is on
y y
Off: power is off
y y
(Power Button)
Ports
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ASSEMBLING AND PREPARING
7
5
5
Power Indicator
On: power is on
y y
Off: power is off
y y
(Power Button)
Ports
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8
ASSEMBLING AND PREPARING
29UB55
Power Indicator
On: power is on
y y
Off: power is off
y y
(Power Button)
Ports
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ASSEMBLING AND PREPARING
9
Moving and Lifting the Monitor
CAUTION
As far as possible, avoid touching the moni-
y y
When moving or lifting the monitor, follow these
instructions to prevent the monitor from being
scratched or damaged and to ensure safe trans-
portation regardless of its shape or size.
tor screen. This may result in damage to the
screen or some of the pixels used to create
images.
25UM55
29UM55
It is advisable to place the monitor in the
y y
original box or packing material before at-
tempting to move it.
Before moving or lifting the monitor, discon-
y y
nect the power cord and all cables.
Hold the top and bottom of the monitor frame
y y
firmly. Do not hold the panel itself.
25UB55
29UB55
When holding the monitor, the screen should
y y
face away from you to prevent it being
scratched.
If you use the monitor panel without the
yy
stand base, its joystick button may cause
the monitor to become unstable and fall,
resulting in damage to the monitor or human
injury. In addition, this may cause the joystick
button to malfunction.
When moving the monitor, avoid any strong
y y
shock or vibrations to the product.
When moving the monitor, keep it upright,
y y
never turn the monitor on its side or tilt it
sideways.
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10 ASSEMBLING AND PREPARING
Attach the screw cover.
4
Installing the Monitor
Assembling the stand base
25UM55
Place the screen face down.
1
2
CAUTION
To protect the screen from scratches, cover
y y
the surface with a soft cloth.
Check the direction of the stand body
(front, back) and then mount the stand body
onto the stand hinge.
Screw Cover
Tighten two screws into the back of the stand
body .
Screws
Stand Body
Stand Hinge
1
2
Attach the Stand Base to Stand Body.
3
Tighten the screw to the right.
Stand Body
Stand Base
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ASSEMBLING AND PREPARING 11
Attach the screw cover.
4
29UM55
Place the screen face down.
CAUTION
1
2
Screw Cover
To protect the screen from scratches, cover
y y
the surface with a soft cloth.
Check the direction of the stand body
(front, back) and then mount the stand body
onto the stand hinge.
Tighten two screws into the back of the stand
body .
Screws
CAUTION
Applying excessive force when tightening
the screws may cause damage to the moni-
tor. Damage caused in this way will not be
covered by the product warranty.
Stand Body
Stand Hinge
CAUTION
It may hurt your foot off the stand, so be
careful.
1
2
Attach the Stand Base to Stand Body.
3
Tighten the screw to the right.
Stand Body
Stand Base
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12 ASSEMBLING AND PREPARING
25UB55
29UB55
Place the screen face down.
1
2
Place the screen face down.
1
2
CAUTION
CAUTION
To protect the screen from scratches, cover
y y
To protect the screen from scratches, cover
y y
the surface with a soft cloth.
the surface with a soft cloth.
Check the position (at the front and rear) of
the stand body, then mount the stand base on
the stand body as shown in the figure.
Check the position (at the front and rear) of
the stand body, then mount the stand base on
the stand body as shown in the figure.
Stand Body
Stand Body
Stand Base
Stand Base
Using a coin, turn the screw clockwise to se-
cure the stand base.
3
Using a coin, turn the screw clockwise to se-
cure the stand base.
3
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ASSEMBLING AND PREPARING 13
Using the cable holder
25UM55
29UB55
29UM55
1
2
3
Fix the Knob (Cable holder) to the
Hole(Stand Body).
Use one screw to fix the Cable Holder and
monitor set.
Close the Cable holder.
25UB55
1
2
3
Fix the Knob (Cable holder) to the
Hole(Stand Body).
Use one screw to fix the Cable Holder and
monitor set.
Close the Cable holder.
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14 ASSEMBLING AND PREPARING
Remove the two screws on the back of stand
body.
3
Detaching the stand base
25UM55
As shown in the illustration, disconnect the
stand body from the stand hinge.
Place the screen face down.
1
Screws
CAUTION
To protect the screen from scratches, cover
yy
the surface with a soft cloth.
Remove the screw cover.
2
Stand Body
1
2
Turn the screw to the left.
4
Pull out the Stand Base.
Stand Body
Stand Base
Screw cover
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ASSEMBLING AND PREPARING 15
1
2
Turn the screw to the left.
Pull out the Stand Base.
4
29UM55
Place the screen face down.
1
2
Stand Body
CAUTION
To protect the screen from scratches, cover
yy
the surface with a soft cloth.
Remove the screw cover.
Screw cover
Stand Base
CAUTION
Illustrations in this document represent typi-
yy
cal procedures, so they may look different
from the actual product.
Do not carry the monitor upside down by just
yy
holding the stand base. This may cause the
monitor to fall off the stand and could result
in personal injury.
Remove the two screws on the back of stand
body.
3
When lifting or moving the monitor, do not
yy
touch the monitor screen. Applying force or
pressure may damage the monitor screen.
Instead, hold the stand body or the plastic
frame of the product.
As shown in the illustration, disconnect the
stand body from the stand hinge.
Stand Hinge
Stand Body
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16 ASSEMBLING AND PREPARING
25UB55
29UB55
Place the screen face down.
1
Place the screen face down.
1
CAUTION
CAUTION
To protect the screen from scratches, cover
y y
To protect the screen from scratches, cover
y y
the surface with a soft cloth.
the surface with a soft cloth.
Turn the screw to the left using a coin.
1
2
Turn the screw to the left using a coin.
1
2
2
Detach the stand base.
2
Detach the stand base.
Stand Body
Stand Body
Stand Base
CAUTION
Stand Base
The components in the illustrations may dif-
y y
fer from the actual product.
Do not carry the monitor upside down, as this
y y
may cause it to fall off its stand and result in
damage or injury.
To avoid damaging the screen when lifting
y y
or moving the monitor, only hold the stand or
the plastic cover. This avoids putting unnec-
essary pressure on the screen.
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ASSEMBLING AND PREPARING 17
29UB55
Detaching the stand body
25UB55
Place the monitor's screen face down. To
protect the screen from scratches, cover the
surface with a soft cloth.
1
2
Place the monitor's screen face down. To
protect the screen from scratches, cover the
surface with a soft cloth.
1
2
Using a screwdriver, remove the four screws
and detach the stand from the monitor.
Using a screwdriver, remove the four screws
and detach the stand from the monitor.
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18 ASSEMBLING AND PREPARING
Connect the adapter to the monitor, then plug
the power cord into the power outlet.
2
Installing onto a table
Lift the monitor and place it on the table in an
upright position.
1
Place at least 10 cm away from the wall to
ensure sufficient ventilation.
25UM55
29UM55
10 cm
10 cm
10 cm
29UM55
10 cm
25UB55
29UB55
10 cm
10 cm
29UB55
10 cm
10 cm
Press the
the monitor to turn it on.
(Power) button on the bottom of
3
CAUTION
Unplug the power cord prior to moving or
y y
installing the monitor. There is risk of electric
shock.
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ASSEMBLING AND PREPARING 19
The height can be adjusted up to 110.0 mm.
3
Adjusting the stand height
25UB55
25UB55
29UB55
110.0 mm
Stand the monitor assembled with the stand
base in an upright position
1
2
Remove the tape attached to the bottom
back of the stand body and then pull out the
locking pin while pressing the head down-
ward.
29UB55
110.0 mm
Stand Body
Tape
CAUTION
Locking Pin
Once the pin is removed, it is not necessary
y y
to re-insert it to adjust the height.
WARNING
Do not put your fingers or
y y
hand between the screen
and the base (chassis) when
adjusting the screen's height.
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20 ASSEMBLING AND PREPARING
Adjusting the angle
Place the monitor in an upright position, mount-
ed on the stand base.
1
2
Adjust the angle of the screen. The angle of the
screen can be adjusted forwards or backwards
for a comfortable viewing experience.
Rear Side
Front Side
-
29UB55
Rear Side
Front Side
20
-5
29UM55
20
-5
Rear Side
Front Side
Rear Side
Front Side
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ASSEMBLING AND PREPARING 21
WARNING
To avoid injury to the fingers when adjusting
y y
Be careful not to touch or press the screen
y y
the screen, do not hold the lower part of the
monitor's frame as illustrated below.
area when adjusting the angle of the monitor.
29UM55
25UM55
29UB55
25UB55
29UM55
29UB55
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22 ASSEMBLING AND PREPARING
Rotate the monitor clockwise as shown in the
figure.
3
25UB55
Pivot feature
The pivot feature allows the monitor to rotate 90
clockwise.
Head
Complete the installation by rotating the
monitor 90° as shown below.
4
Stand
WARNING
To avoid scratching the stand base, make
y y
sure that when rotating the monitor using
the pivot feature, the stand does not make
contact with the monitor.
WARNING
Take care when rotating the monitor if the
y y
cable is connected.
Raise the monitor up to the maximum height.
1
NOTE
An image displayed on the monitor's screen
y y
does not rotate according to the screen
orientation.
Adjust the angle of the monitor in the direction
of the arrow as shown in the figure.
2
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ASSEMBLING AND PREPARING 23
Using the Kensington lock
Installing the wall mount plate
The Kensington security system connector is locat-
ed at the back of the Monitor set.
This monitor supports the specification of the stan-
dard wall mount plate or compatible device.
For more information on installation and usage,
refer to the Kensington lock user manual or visit
Place the screen face down. To protect the
screen from scratches, cover the surface with a
soft cloth.
1
Connect the Kensington security system cable
between the Monitor set and a table.
Place the wall mount plate onto the monitor
and align it with the screw holes.
2
3
Using a screwdriver, tighten the four screws to
fix the plate onto the monitor.
29UM55
25UM55
Wall Mount Plate
29UB55
25UB55
NOTE
The wall mount plate is sold separately.
y y
For more information on installation, refer to
y y
the wall mount plate's installation guide.
Be careful not to use excessive force when
y y
mounting the wall mount plate, as this can
damage the monitor's screen.
NOTE
Use of the Kensington lock is optional.
y y
The accessories can be purchased at
your local electronics store.
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24 ASSEMBLING AND PREPARING
75 x 75
M4 x 10 mm
4
Wall Mount (A x B)
Stand Screw
Required Screws
Installing to a wall
Install the monitor at least 10 cm away from the
wall and leave about 10 cm of space at each side
of the monitor to ensure sufficient ventilation. De-
tailed installation instructions can be obtained from
your local retail store. Please refer to the manual
to install and set up a tilting wall mounting bracket.
CAUTION
Unplug the power cord before moving or in-
y y
stalling the monitor to avoid electric shocks.
Installing the monitor on the ceiling or on a
y y
slanted wall may result in the monitor falling
off, which could lead to injury. Please use
the genuine LG wall mounting bracket. For
more information, contact your local retail
store or a qualified installer.
10 cm
Applying excessive force when fastening
y y
screws may cause damage to the moni-
tor. Damage caused in this way will not be
covered by the product warranty.
10 cm
10 cm
Use the wall mounting bracket and screws
y y
that conform to the VESA standard. Dam-
age caused by the use or misuse of inap-
propriate components will not be covered
by the product warranty.
10 cm
To install the monitor to a wall, attach a wall mount-
ing bracket (optional) to the back of the monitor.
Make sure that the wall mounting bracket is securely
fixed to the monitor and to the wall.
Screw length from outer surface of back
y y
cover should be under 8mm.
Wall mount Pad
1 If you use screw longer than standard, the moni-
tor might be damaged internally.
Back Cover
2 If you use improper screw, the product might be
damaged and drop from mounted position.
In this case, LG Electronics is not responsible
for it.
Wall mount Pad
Back Cover
Standard screw
Max.8mm
NOTE
Use the screws specified by the VESA stan-
y y
dard.
The wall mount kit includes the installation
y y
guide and all necessary parts.
The wall mounting bracket is optional. The
y y
accessories can be purchased at your local
retail store.
The length of the screw may differ for each
y y
wall mounting bracket. Ensure the correct
length screw is used.
For more information, please refer to the
y y
user manual for the wall mounting bracket.
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USING THE MONITOR 25
USING THE MONITOR
Connecting to a PC
CAUTION
This monitor supports the *Plug and Play
y y
Connect the input signal cable and
y y
feature.
turn in the direction of the arrow.
To prevent disconnection secure
the cable tightly.
*Plug and Play: A feature that allows you to
add a device to your computer without having
to reconfigure anything or install any manual
drivers.
Do not press on the screen for a
y y
prolonged period of time. This may cause
image distortion.
DVI connection
Do not display a still image on the screen
y y
for a prolonged period of time. This may
cause image retention. If possible, use the
screen saver.
Transmits digital video signals to the monitor. Con-
nect the monitor using the DVI cable as illustrated
below.
Press the menu button and then select the input
option from the input menu.
NOTE
To hear the sound in DVI input mode, connect the
PC's AUDIO OUT port to the monitor's AUDIO IN
(PC) port using the audio cable that came with the
product.
When connecting the power cord to the out-
y y
let, use a grounded (3-hole) multi-socket or a
grounded power outlet.
The monitor may flicker when turned on in an
y y
area of low temperature. This is normal.
Sometimes red, green, or blue spots may ap-
y y
pear on the screen. This is normal.
Using a DVI to HDMI cable may cause com-
25UB55
29UB55
y y
patibility issues.
(sold separately)
(sold separately)
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26 USING THE MONITOR
DisplayPort connection
Transmits the digital video and audio signals from
your PC to the monitor. Connect your PC to the
monitor using the display port cable as illustrated
below.
Press the menu button and then select the input
option from the input menu.
(sold separately)
(sold separately)
29UB55
2
(sold separately)
29UM55
(sold separately)
NOTE
There may be no video or audio output de-
y y
pending on the DP version of the PC.
The DisplayPort cable may not be available
y y
in some areas.
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USING THE MONITOR 27
HDMI connection
Transmits the digital video and audio signals from
your PC and A/V devices to the monitor. Connect
your PC and AV device to the monitor with the
HDMI cable as illustrated below.
Press the menu button and then select the input
option from the input menu.
29UB55
2
29UM55
NOTE
HDMI PC may cause device compatibility
y y
issues.
Using a DVI to HDMI cable may cause com-
y y
patibility issues.
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28 USING THE MONITOR
Connecting to AV Devices
HDMI connection
Transmits the digital video and audio signals from
your PC and A/V devices to the monitor. Connect
your PC and AV device to the monitor with the
HDMI cable as illustrated below.
Press the menu button and then select the input
option from the input menu.
29UB55
2
29UM55
NOTE
Using a DVI to HDMI cable may cause com-
y y
patibility issues.
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USING THE MONITOR 29
Connecting to External Devices
Headphone port connection
Use the headphone port to connect a peripheral
device to the monitor. Connect as illustrated.
(sold separately)
29UB55
(sold separately)
29UM55
(sold separately)
NOTE
For an angle plug earphone, it is difficult
y y
connect it with a peripheral device, so use a
straight type.
(sold separately)
Angle Type
Straight Type
NOTE
Depending on the audio settings of the PC
y y
and external device, headphone and speaker
functions may be limited.
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30 INSTALLING LG Monitor Software
INSTALLING LG MONITOR SOFTWARE
Insert the the owner's manual CD included in the product package into your PC's CD driver and install the
LG Monitor Software.
Follow the instructions to proceed with the
installation.
3
Set the default Web browser to Internet Explorer.
1
25UB55 29UB55
25UM55 29UM55
Check "I accept the terms of the agreement" on
the License Agreement screen and then click
the [Next] button.
4
Click the "LG Monitor Software" on the CD's
2
main screen. When the file download window
appears, click the Run button. (The file down-
load window may vary depending on the oper-
ating system and the Internet Explorer version,
but the installation procedures are same.)
Select the program that you want to install.
5
CAUTION
Service Pack 1 or higher is required for
y y
Windows 7.
NOTE
Screen Split: This program automatically
y y
splits the program window as desired.
This program not supported Windows XP.
Auto Resolution: This is a program that
y y
automatically changes the resolution to the
optimal settings when connecting the monitor
to the PC in PBP mode.
This program is not supported in Clone
Mode.
Extended Mode is not supported when
using a single display.
This program not supported Windows XP &
Vista.
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INSTALLING LG Monitor Software 31
The LG Monitor Software installation starts as
shown below.
6
NOTE
If you run Screen Split, the Screen Split icon [
] appears in the system tray at the right bottom of
the PC screen.
Right-click the Screen Split icon and select a
layout you want.
The program you selected on the Select
Features page will install automatically.
7
When the installation is complete, restart your
system.
8
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32 CUSTOMIZING SETTINGS
CUSTOMIZING SETTINGS
Activating the Main Menu
Navigation OSD
Power Indicator
Power buttons
Press the Power( ) button, the navigation OSD appear.
1
2
3
Jog the Power button left (
), right (
), up ( ), down ( ) to adjust the options.
Press and hold the Power( ) button to exit the OSD menu.
Button
Description
If the menu is
disabled
Enables the navigation OSD.
Close the navigation OSD.
(Long pressMonitor off, This turn off method can work in any condition. Even
though OSD Off.)
Press the power
button center.
If the menu is
enabled
Power Indicator When the monitor is in operating mode, the power indicator will turn on. (powered
on).
When the monitor is in power-saving mode, the power indicator will blinking.
If the menu is
Adjusts the volume level of the monitor.
disabled
Jog the power
button left.
If the menu is
enabled
Enter to Menu OSD.In no sync mode, enter Input change OSD.
If the menu is
Adjusts the volume level of the monitor.
disabled
Jog the power
button right.
If the menu is
Enter to PBP OSD.
enabled
If the menu is
Enables the navigation OSD.
disabled
Jog the power
button up.
If the menu is
Enter to Reader OSD .
enabled
If the menu is
Enables the navigation OSD.
disabled
Jog the power
button down.
If the menu is
enabled
Turn the Minitor off.
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CUSTOMIZING SETTINGS 33
Customizing settings
Menu Settings
-Easy control
To view the navigation OSD, press the Power button center ( ) .
1
2
Jog Power button left (
) to go to Menu OSD .
Press Power button center ( ) or Jog Power button right (
)
3
to select Easy control.
Set the options follow up the instruction appear on right bottom of
the screen.
4
5
To return to the upper menu or set other menu items, Jog the
Power left(
).
Each option is described below.
Menu > Easy control
Brightness
Description
Adjusts the color contrast and brightness of the screen.
Contrast
Volume
Adjusts the volume.
NOTE
Jog Power button down (
y y
) in the Volume menu will enable/disable the
Mute function.
Input
Ratio
Selects the current input mode.
Adjusts the screen ratio.
Wide
Displays the video in wide-screen, regardless of the video signal input.
Displays a video according to the input video signal aspect ratio.
Enlarges the screen with an aspect ratio of 21:9. (at 1080p)
Original
Cinema 1
Cinema 2
Enlarges the screen with an aspect ratio of 21:9 including the black box area
at the bottom for subtitles. (at 1080p)
1:1
The aspect ratio is not adjusted from the original.
NOTE
The display may look the same for Wide, Original and 1:1 options at the recommended resolution
y y
(2560 x 1080).
The ratio is disabled in the interlaced signal.
y y
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34 CUSTOMIZING SETTINGS
-Function
To view the navigation OSD, press the Power button
center ( ) .
1
Jog Power button left (
) to go to Menu OSD .
) or down( ) to go
2
3
Jog the power button up(
to Function.
Press Power button center ( ) or Jog Power button
4
5
6
right (
) to select Function.
Set the options follow up the instruction appear on
right bottom of the screen.
To return to the upper menu or set other menu items,
Jog the Power left(
).
Each option is described below.
Menu > Func.
Description
SUPER ENERGY High
Saves energy by using the high-efficiency SUPER ENERGY SAVING function.
Saves energy by using the low-efficiency SUPER ENERGY SAVING function.
Disables the SUPER ENERGY SAVING function.
SAVING
Low
Off
Picture Mode
Custom
Allows the user to adjust each element. The color mode of the main menu can be ad-
justed.
Photo
Cinema
Game
Optimizes the screen to view photos.
Optimizes the screen to improve the visual effects of a video.
Optimizes the screen for gameplay.
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CUSTOMIZING SETTINGS 35
-PBP
To view the navigation OSD, press the Power button
center ( ) .
1
Jog Power button left (
) to go to Menu OSD .
) or down( ) to go
2
3
Jog the power button up(
to PBP.
Press Power button center ( ) or Jog Power button
4
5
6
right (
) to select PBP.
Set the options follow up the instruction appear on
right bottom of the screen.
To return to the upper menu or set other menu items,
Jog the Power left(
).
Menu > PBP
PBP
Description
Displays the screens of two input modes on one monitor.
Input
Main
Sub
Displays the video in wide-screen, regardless of the video signal input.
Displays a video according to the input video signal aspect ratio.
Audio
Swap
Changes the audio output in PBP mode.
Toggles between the main screen and sub screen in PBP mode.
Converts the sub screen of PBP mode to the wide screen.
Adjusts the aspect ratio of the main screen or sub screen.
Main Wide
Sub Full
Ratio
Displays the video to fit the Main screen, regardless of the video signal input.
Original
Sub Wide
Original
Displays the video in the input video signal aspect ratio on the Main screen.
Displays the video to fit the Sub screen, regardless of the video signal input.
Displays the video in the input video signal aspect ratio on the Sub screen.
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36 CUSTOMIZING SETTINGS
-Screen
To view the navigation OSD, press the Power button
center ( ) .
1
Jog Power button left (
) to go to Menu OSD .
) or down( ) to go
2
3
Jog the power button up(
to Screen.
Press Power button center ( ) or Jog Power button
4
5
6
right (
) to select Screen.
Set the options follow up the instruction appear on
right bottom of the screen.
To return to the upper menu or set other menu items,
Jog the Power left(
).
Each option is described below.
Menu > Screen
Description
Picture Sharpness
Black Level
Adjusts the sharpness of the screen.
Sets the offset level (for HDMI only).
Offset: as a reference for a video signal, this is the darkest color the monitor can
y
display.
High
Low
The picture of the screen gets brighter.
The picture of the screen gets darker.
Response Time Sets a response time for displayed pictures based on the speed of the screen. For a nor-
mal environment, it is recommended that you use Normal. For a fast-moving picture, it is
recommended that you use High.
Setting to High may cause image sticking.
High
Sets the response time to High.
Sets the response time to Middle.
Sets the response time to Low.
Sets the response time to Off.
Middle
Low
Off
Color
Gamma
Custom gamma setting: When using the gamma 0, gamma 1, and gamma 2 monitor set-
tings, higher gamma settings mean a brighter image is displayed and vice versa.
Color Temp
Custom
Red
You can customize the picture color using Red, Green, and Blue colors.
Green
Blue
Selects the factory default picture color.
Warm: Sets the screen color to a reddish tone.
Medium: Sets the screen color between a red and blue tone.
Cool: Sets the screen color to a bluish tone.
Six Color
Meets the user requirements for colors through adjusting the color and saturation of the
six colors(Red_Hue, Red_Saturation, Green_Hue, Green_Saturation, Blue_Hue, Blue_
Saturation, Cyan_Hue, Cyan_Saturation, Magenta_Hue, Magenta_Saturation, Yel-
low_Hue, Yellow_Saturation) and saving the settings.
*Hue: Adjusts tone of the screen.
*Saturation: Adjusts the saturation of the screen colors. The lower the value, less satu-
rated and bright the colors become. The higher the value, the more saturated and dark the
colors become.
Reset
Returns the color settings to the default settings.
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CUSTOMIZING SETTINGS 37
-Settings
To view the navigation OSD, press the Power button center ( ) .
1
2
Jog Power button left (
) to go to Menu OSD .
) or down( ) to go to Settings.
Jog the power button up(
3
4
Press Power button center ( ) or Jog Power button right (
)
to select Settings.
Set the options follow up the instruction appear on right bottom of
the screen.
5
6
To return to the upper menu or set other menu items, Jog the
Power left(
).
Each option is described below.
Menu > Settings
Description
Main Audio
Main audio have three options.HDMI1, HDMI2, DisplayPort. (25UM55/29UM55)
Main audio have four options.HDMI1, HDMI2, DisplayPort, Audio-In. (25UB55/29UB55)
Language
Sets the menu screen to the desired language.
Power LED
Turns the power indicator on the front side of the monitor on/off.
On
Off
The power indicator is automatically turned on.
The power indicator is turned off.
Automatic Standby The monitor will automatically switch to standby mode after a certain period.
OSD Lock Prevents incorrect key input.
On Key input is disabled.
NOTE
All functions except for the OSD Lock mode and the Exit button for Brightness, Contrast,
Volume, Input, and Settings are disabled.
Off
Key input is enabled.
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38 CUSTOMIZING SETTINGS
-Reset
To view the navigation OSD, press the Power button
center ( ) .
1
Jog Power button left (
) to go to Menu OSD .
) or down( ) to go
2
3
Jog the power button up(
to Reset.
Press Power button center ( ) or Jog Power button
4
5
6
right (
) to select Reset.
Set the options follow up the instruction appear on
right bottom of the screen.
To return to the upper menu or set other menu items,
Jog the Power left(
).
Each option is described below.
Menu > Reset
Description
Do you want to reset your settings?
Reset
Returns to the default settings.
Cancel the select.
Cancel
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CUSTOMIZING SETTINGS 39
Reader Settings
To view the navigation OSD, press the Power button center ( ) .
1
Jog Power button up (
) to go to Reader OSD.
2
3
Set the options follow up the instruction appear on bottom of the
screen.
Each option is described below.
Reader Mode
Reader 1
Description
It is a mode that the screen is adjusted to the best for the newspaper. If you
want screen more bright, you can control brightness in Menu OSD.
Reader 2
It is a mode that the screen is adjusted to the best for the cartoon. If you want
screen more bright, you can control brightness in Menu OSD.
Reader Off
It is a mode that reader mode is off.
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40 TROUBLESHOOTING
TROUBLESHOOTING
Nothing is displayed on the screen.
Is the monitor's power cord plugged
in?
Check if the power cord is correctly plugged in to the power outlet.
y
Is the power indicator on?
Check the power cable connection and press the power button.
Check that the connected input is enabled (Menu - Input).
y
y
Is the power indicator displaying ?
Is the power indicator blinking?
If the monitor is in power-saving mode, move the mouse or press any
key on the keyboard to switch the display on.
y
Check if the computer is turned on.
y
y
Is the "OUT OF RANGE" message
displayed?
This occurs when signals transferred from the PC (video card) are out
of the horizontal or vertical frequency range of the monitor. Please see
the "Product Specification" section of this manual to set the appropri-
ate frequency.
Is the "CHECK SIGNAL CONNEC-
TION" message is displayed?
This is displayed when the signal cable between the PC and the moni-
tor is missing or disconnected. Check the cable and reconnect.
y
The screen retains an image.
Does image sticking occur even
when the monitor is turned off?
Displaying a still image for a prolonged time may cause damage to the
screen, resulting in the retention of the image.
Use a screen saver to protect the screen when using the monitor for a
prolonged period of time.
y
y
The screen is flickering.
Did you select the recommended
resolution?
If the selected resolution is HDMI 1080i 60/50 Hz, the screen
may be flickering. Change the resolution to the recommended
resolution 1080P.
y
NOTE
Vertical Frequency: In order to display an image, the screen must be refreshed dozens of times per
y y
second like a fluorescent lamp.
The number of times the screen is refreshed per second is called vertical frequency or refresh rate
and is represented by Hz.
Horizontal Frequency: The time it takes to display one horizontal line is called the horizontal cycle.
y y
The number of horizontal lines displayed in one second can be calculated by dividing one by the hori-
zontal cycle. This is called horizontal frequency and is represented by kHz.
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TROUBLESHOOTING 41
NOTE
Check if the video card's resolution or frequency is within the range allowed by the monitor and set to
y y
the recommended (optimal) resolution in Control Panel > Display > Settings.
Failing to set the video card to the recommended (optimal) resolution may result in blurred text, a
y y
dimmed screen, a truncated display area or misalignment of the display.
The configuration procedure may differ depending on your computer and/or operating system. Also,
y y
some video cards may not support certain resolutions. If this is the case, contact the manufacturer of
the computer or video card for assistance.
Some video cards may not support the 2560x1080 resolution.
y y
If the resolution cannot be displayed, contact the manufacturer of your video card.
The display color is abnormal.
Does the display appear discolored
(16 color)?
Set the color to 24 bit (true color) or higher. In Windows, go to Control
Panel > Display > Settings > Color Quality.
y
y
y
Does the display color appear un-
stable or in monochrome?
Check if the signal cable is connected properly. Reconnect the cable
or reinsert the PC's video card.
Are there spots on the screen?
When using the monitor, pixilated spots (red, green, blue, white or
black) may appear on the screen. This is normal for the LCD screen.
It is not an error nor is it related to the monitor's performance.
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42 SPECIFICATIONS
SPECIFICATIONS
25UM55
LCD Screen
Type
64 cm TFT (Thin Film Transistor)
LCD (Liquid Crystal Display) Screen
Diagonal length of the screen: 64 cm
Pixel Pitch
0.2325 mm x 0.2325 mm
2560 x 1080 @ 60 Hz
Resolution
Maximum Resolution
Recommended Resolution 2560 x 1080 @ 60 Hz
Video Signal
Horizontal Frequency
Vertical Frequency
Synchronization
30 kHz to 90 kHz
DP:50 Hz to 75 Hz HDMI: 25 Hz to 60 Hz
Separate Sync.
Input Connector HDMI IN1, HDMI IN2 , DisplayPort, H/P
Power
Voltage
19 V
1.6 A
Power consumption (Typ.)
*
On mode: 31 W (ENERGY STAR® standard)
Power Saving Mode ≤ 0.5 W
Off Mode ≤ 0.5 W
AC/DC adaptor
ADS-40SG-19-3 19032G type, SHENZHEN HONOR ELECTRONIC CO.,LTD produc-
tion
Or LCAP21A type, LIEN CHANG ELECTRONIC ENTERPRISE production.
Output: 19 V
1.7 A
Environmental
Conditions
Operating Condition
Storing Condition
Temperature: 10°C to 35°C; Humidity: 10% to 80%
Temperature: -20°C to 60°C; Humidity: 5% to 90%
Stand Angle
Adjustment
Forwards/Backwards: -5° to 20° (Head)
Dimension
Monitor Size (Width x Height x Depth)
With Stand
609 mm x 383 mm x 188 mm
609 mm x 287 mm x 55 mm
Without Stand
Weight (Without 4.0 kg
Packaging)
The specifications are subject to change without notice.
* The power consumption level can be different by operating condition and monitor setting.
* The On mode power consumption is measured with ENERGY STAR test standard.
®
* ENERGY STAR is a US registered mark of the United States Environmental Protection Agency.
®
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SPECIFICATIONS 43
SPECIFICATIONS
25UB55
LCD Screen
Type
64 cm TFT (Thin Film Transistor)
LCD (Liquid Crystal Display) Screen
Diagonal length of the screen: 64 cm
Pixel Pitch
0.2325 mm x 0.2325 mm
2560 x 1080 @ 60 Hz
Resolution
Maximum Resolution
Recommended Resolution 2560 x 1080 @ 60 Hz
Video Signal
Horizontal Frequency
Vertical Frequency
Synchronization
30 kHz to 90 kHz
DVI/DP:50 Hz to 75 Hz HDMI: 25 Hz to 60 Hz
Separate Sync.
Input Connector DVI-D IN, HDMI IN1, HDMI IN2 , DisplayPort, Audio In(PC), H/P
Power
Voltage
19 V
1.6 A
Power consumption (Typ.)
*
On mode: 31 W (ENERGY STAR® standard)
Power Saving Mode ≤ 0.5 W
Off Mode ≤ 0.5 W
AC/DC adaptor
ADS-40SG-19-3 19032G type, SHENZHEN HONOR ELECTRONIC CO.,LTD produc-
tion
Or LCAP21A type, LIEN CHANG ELECTRONIC ENTERPRISE production.
Output: 19 V
1.7 A
Environmental
Conditions
Operating Condition
Storing Condition
Temperature: 10°C to 35°C; Humidity: 10% to 80%
Temperature: -20°C to 60°C; Humidity: 5% to 90%
Speaker Wattage 7 W + 7 W
Stand Angle
Adjustment
Forwards/Backwards: -5° to 20° (Head)
Dimension
Monitor Size (Width x Height x Depth)
With Stand
609 mm x 357 mm x 239 mm
609 mm x 287 mm x 55 mm
Without Stand
Weight (Without 4.9 kg
Packaging)
The specifications are subject to change without notice.
* The power consumption level can be different by operating condition and monitor setting.
* The On mode power consumption is measured with ENERGY STAR test standard.
®
* ENERGY STAR is a US registered mark of the United States Environmental Protection Agency.
®
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44 SPECIFICATIONS
SPECIFICATIONS
29UM55
LCD Screen
Type
73.025 cm TFT (Thin Film Transistor)
LCD (Liquid Crystal Display) Screen
Diagonal length of the screen: 73.025 cm
Pixel Pitch
0.0876 mm x 0.2628 mm
2560 x 1080 @ 60 Hz
Resolution
Maximum Resolution
Recommended Resolution 2560 x 1080 @ 60 Hz
Video Signal
Horizontal Frequency
Vertical Frequency
Synchronization
30 kHz to 90 kHz
DP:50 Hz to 75 Hz HDMI: 25 Hz to 60 Hz
Separate Sync.
Input Connector HDMI IN1, HDMI IN2 , DisplayPort, H/P
Power
Voltage
19 V
2.0 A
Power consumption (Typ.)
*
On mode: 31 W (ENERGY STAR® standard)
Power Saving Mode ≤ 0.5 W
Off Mode ≤ 0.5 W
AC/DC adaptor
ADS-45SN-19-3 19040G type, SHENZHEN HONOR ELECTRONIC CO.,LTD produc-
tion
Or LCAP21B type, LIEN CHANG ELECTRONIC ENTERPRISE production.
Output: 19 V
2.1 A
Environmental
Conditions
Operating Condition
Storing Condition
Temperature: 10°C to 35°C; Humidity: 10% to 80%
Temperature: -20°C to 60°C; Humidity: 5% to 90%
Stand Angle
Adjustment
Forwards/Backwards: -5° to 20° (Head)
Dimension
Monitor Size (Width x Height x Depth)
With Stand
70.3 cm x 41.4 cm x 21.3 cm
70.3 cm x 32.8 cm x 6.4 cm
Without Stand
Weight (Without 5.2 kg
Packaging)
The specifications are subject to change without notice.
* The power consumption level can be different by operating condition and monitor setting.
* The On mode power consumption is measured with ENERGY STAR test standard.
®
* ENERGY STAR is a US registered mark of the United States Environmental Protection Agency.
®
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SPECIFICATIONS 45
SPECIFICATIONS
29UB55
LCD Screen
Type
73.025 cm TFT (Thin Film Transistor)
LCD (Liquid Crystal Display) Screen
Diagonal length of the screen: 73.025 cm
0.0876 mm x 0.2628 mm
Pixel Pitch
Resolution
Maximum Resolution
2560 x 1080 @ 60 Hz
Recommended Resolution 2560 x 1080 @ 60 Hz
Video Signal
Horizontal Frequency
Vertical Frequency
Synchronization
30 kHz to 90 kHz
DVI/DP:50 Hz to 75 Hz HDMI: 25 Hz to 60 Hz
Separate Sync.
Input Connector DVI-D IN, HDMI IN1, HDMI IN2 , DisplayPort, Audio In(PC), H/P
Power
Voltage
19 V
2.0 A
Power consumption (Typ.)
*
On mode: 31 W (ENERGY STAR® standard)
Power Saving Mode ≤ 0.5 W
Off Mode ≤ 0.5 W
AC/DC adaptor
ADS-45SN-19-3 19040G type, SHENZHEN HONOR ELECTRONIC CO.,LTD produc-
tion
Or LCAP21B type, LIEN CHANG ELECTRONIC ENTERPRISE production.
Output: 19 V
2.1 A
Environmental
Conditions
Operating Condition
Storing Condition
Temperature: 10°C to 35°C; Humidity: 10% to 80%
Temperature: -20°C to 60°C; Humidity: 5% to 90%
Speaker Wattage 7 W + 7 W
Stand Angle
Adjustment
Forwards/Backwards: -5° to 20° (Head)
Dimension
Monitor Size (Width x Height x Depth)
With Stand
70.3 cm x 37.7 cm x 25.9 cm
70.3 cm x 32.8 cm x 4.3 cm
Without Stand
Weight (Without 6.3 kg
Packaging)
The specifications are subject to change without notice.
* The power consumption level can be different by operating condition and monitor setting.
* The On mode power consumption is measured with ENERGY STAR test standard.
®
* ENERGY STAR is a US registered mark of the United States Environmental Protection Agency.
®
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46 SPECIFICATIONS
Factory support mode
(Preset Mode, DVI-D/HDMI/PC DisplayPort)
Horizontal Frequency Vertical Frequency
Preset Mode
Polarity (H/V)
Remarks
(kHz)
31.468
31.469
37.5
(Hz)
70.08
59.94
75
720 x 400
-/+
-/-
640 x 480
640 x 480
-/-
800 x 600
37.879
46.875
48.363
60.123
67.5
60.317
75
+/+
+/+
-/-
800 x 600
1024 x 768
1024 x 768
1152 x 864
1280 x 720
1280 x 1024
1280 x 1024
1600 x 900
1680 x 1050
1920 x 1080
2560 x 1080
60
75.029
75
+/+
+/+
+/+
+/+
+/+
+/+
-/+
+/-
-/+
45
60
63.981
79.976
60
60.02
75.025
60
65.290
67.5
59.954
60
66.7
60
HDMI Timing (Video)
Horizontal
Frequency (kHz)
Vertical
Frequency (Hz)
Preset Mode
Remarks
480P
576P
720P
720P
1080P
1080P
31.50
31.25
37.50
45.00
56.25
67.50
60
50
50
60
50
60
Power Indicator
Mode
LED Color
Light On
On Mode
Power-saving
Off Mode
Blinking
Off
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PROPER POSTURE 47
PROPER POSTURE
Proper Posture for Using the Monitor
Adjust the screen so that you can comfortably view at a slight downward angle from your natural eye level.
Take a break for approximately ten minutes every hour to reduce any fatigue caused by long-time
y y
usage.
The stand of the touch monitor allows the product to be used in the optimum position.
y y
Adjust the stand angle to obtain the best view of the screen.
You should be looking
slightly down at the screen.
Adjust the angle
So that there is no reflection
or glare from the screen.
Place your hands gently on
the keyboard, keeping your
arms bent at the elbows and
extended horizontally in front
of you.
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Declaration of Conformity
Trade Name: LG
Model : 25UM55D,25UB55D,
29UM55D,29UB55D
Responsible Party: LG Electronics Inc.
Address : 1000 Sylvan Ave. Englewood Cliffs
NJ 07632 U.S.A
TEL: 201-266-2534
*above information is only for USA FCC Regulatory
Make sure to read the Safety Precautions
before using the product.
Keep the Owner's Manual(CD) in an
accessible place for future reference.
The model and serial number of the SET
is located on the back and one side of the
SET. Record it below should you ever need
service.
MODEL
SERIAL
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