LG Electronics Computer Monitor 25UB55 User Manual

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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