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OWNER’S MANUAL
IPS LED
MONITOR
(LED Monitor*)
* LG LED Monitor applies LCD screen with LED backlights.
Please read this manual carefully before operating your set and retain it for future
reference.
34UM88
34UM88C
34UB88
www.lg.com
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ENGLISH
2
TABLE OF CONTENTS
LICENSE ---------------------------------3
ASSEMBLING AND PREPARING ------4
- Product Composition --------------------------------4
- Supported Drivers and Software --------------------5
- Product and Button Description --------------------6
How to Use the Joystick Button
Input Connector
- Moving and Lifting the Monitor ---------------------8
- Installing the Monitor -------------------------------9
Assembling the Stand
Installing on a Table
Adjusting the Stand Height
Adjusting the Angle
Tidying up Cables
Using the Kensington Lock
Installing the Wall Mount Plate
Installing on the Wall
USING THE MONITOR ---------------- 14
USER SETTINGS ---------------------- 18
- Activating the Main Menu ------------------------- 18
Main Menu Features
- User Settings -------------------------------------- 19
Menu Settings
Quick Settings
PBP
Picture
Sound
General
Reset
TROUBLESHOOTING ----------------- 29
PRODUCT SPECIFICATION ---------- 31
- Factory Support Mode ---------------------------- 33
- HDMI Timing (Video) ------------------------------ 34
- Power LED ----------------------------------------- 34
- Connecting to a PC -------------------------------- 14
HDMI Connection
DisplayPort Connection
Thunderbolt Connection
- Connecting AV Devices ---------------------------- 16
HDMI Connection
- Connecting Peripherals ---------------------------- 16
USB Cable connection - PC
Connecting Headphones
WARNING: This product contains chemicals known to the State of California to cause cancer and birth defects or other
reproductive harm.
Wash hands after handling.
Page 3
LICENSE
3
Each model has different licenses. Visit
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, DisplayPort compliance logo and DisplayPort compliance logo for dual-mode
source devices are all registered trademarks of the Video Electronics Standards Association.
MaxxAudio and additional MAXX trademarks are trademarks and/or registered trademarks of
Waves Audio Ltd.
The SuperSpeed USB Trident logo is a registered trademark of USB Implementers Forum, Inc.
www.lg.com
for more information on the license.
ENGLISH
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ENGLISH
4
ASSEMBLING AND PREPARING
Product Composition
Please check whether all the components are included in the box before using the product. If there are any missing components,
contact the retailer where you purchased the product. Note that the product and related components may look different from
those shown here.
CD (Owner’s Manual/ Software/
Guides)/ Cards Power Cord AC/DC Adapter HDMI Cable
DisplayPort Cable Stand Body Stand Base Cable Holder
4 Screws
(M4 x L12) Clear Sheet
CAUTION
• Always use genuine LG components to ensure safety and product performance.
• The product warranty will not cover damage or injury caused by the use of unauthorized components.
• It is recommend that use the supplied components.
• If you use generic cables not certified by LG, the screen may not display or there may be image noises.
NOTE
• The components may look different from those illustrated here.
• Without prior notice, all product information and specifications contained in this manual are subject to change to improve the
performance of the product.
• To purchase optional accessories, visit an electronics store or an online shopping site, or contact the retailer from which you
purchased the product.
• The power cord provided may differ depending upon the region.
Page 5
Supported Drivers and Software
Check the drivers and software supported by your product and refer to the manuals on the CD enclosed in the product package.
Drivers and Software Installation Priority 34UM88, 34UB88 34UM88C
Monitor Driver Recommended O O
ASM Driver Required O X
OnScreen Control Recommended O O
Dual Controller Optional O O
TRUE COLOR PRO Optional O O
• Required and Recommended: You can download and install the latest version from the enclosed CD or from the LGE website
(
www.lg.com
• Optional: You can download and install the latest version from the LGE website (
).
www.lg.com
).
5
ENGLISH
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ENGLISH
6
Product and Button Description
Power LED
• On : Power on
• Off : Power off
Joystick Button
How to Use the Joystick Button
You can easily control the functions of the monitor by pressing the joystick button or moving it left/right with your finger.
Basic Functions
Power on Press the joystick button once with your finger to turn on the monitor.
Power off
/
Volume
Control
Press and hold the joystick button once with your finger to turn off the
monitor.
You can control the volume by moving the joystick button left/right.
NOTE
• The joystick button is located at the bottom of the monitor.
Page 7
Input Connector
34UM88, 34UB88
7
ENGLISH
34UM88C
Page 8
8
ENGLISH
Moving and Lifting the Monitor
When moving or lifting the monitor, follow these
instructions to prevent the monitor from being scratched or
damaged and to ensure safe transportation, regardless of its
shape or size.
• Place the monitor in the original box or packing material
before attempting to move it.
• Before moving or lifting the monitor, disconnect the power
cord and all other cables.
• Hold the bottom and side of the monitor frame firmly. Do
not hold the panel itself.
CAUTION
• Avoid touching the monitor screen as much as possible.
- This may result in damage to the screen or some of the
pixels used to create images.
• If you use the monitor panel without the 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 holding the monitor, the screen should face away
from you to prevent it from being scratched.
• When transporting the monitor, do not expose the
monitor to shock or excessive vibration.
• When moving the monitor, keep it upright and never turn
the monitor on its side or tilt it sideways.
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9
Installing the Monitor
Assembling the Stand
1
2
3
Stand Body
or
ENGLISH
Stand Base
Stand Body
CAUTION
• Illustrations in this document represent typical procedures,
so they may look different from the actual product.
• When assembling the stand, lay the packing material on
a table or product box and then place the monitor with
its screen facing down on the packing material or box. Be
sure to protect the screen from scratches. When there is
no packing brace provided, make sure that you place the
screen on soft clothing or a cushion.
• Applying excessive force when tightening screws may
cause damage to the monitor. Damage caused in this way
will not be covered by the product warranty.
• Do not carry the monitor upside down by just holding the
base. This may cause the monitor to fall off the stand and
could result in personal injury.
• When lifting or moving the monitor, do not touch the
monitor screen. The force applied to the monitor screen
may cause damage to it.
NOTE
• You can disassemble the stand in the reverse order of the
assembly.
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Installing on a Table
1 Lift the monitor and place it on the table in an upright
position. Place the monitor at least 100 mm (3.9 inches)
away from the wall to ensure sufficient ventilation.
100 mm
(3.9 inches)
100 mm
(3.9 inches)
100 mm
(3.9 inches)
100 mm
(3.9 inches)
Cautions When Connecting Power Cord
100-240 V ~
• Make sure to use the power cord that is provided in the
product package and connect it to a grounded power
outlet.
• If you need another power cord, please contact your local
dealer or the nearest retail store.
2 Connect the power adapter to the monitor and then plug
the power cord into the wall outlet.
3 Press the joystick button on the bottom of the monitor
to turn on the monitor.
CAUTION
• Unplug the power cord before moving or installing the
monitor. There is risk of electric shock.
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Adjusting the Stand Height
1 Place the monitor mounted on the stand base in an
upright position.
2 Handle the monitor with both hands for safety.
3 The height can be adjusted up to 120 mm (4.7 inches).
120 mm
(4.7 inches)
WARNING
Adjusting the Angle
1 Place the monitor mounted on the stand base in an
upright position.
2 Adjust the angle of the screen. The angle of the screen
can be adjusted forward or backward from -5° to 20° for
a comfortable viewing experience.
FrontRear
WARNING
• To avoid injury to the fingers when adjusting the screen,
do not hold the lower part of the monitor’s frame as
illustrated below.
ENGLISH
• When adjusting the screen height, do
not place your hand on the stand body
to avoid injury to your fingers.
• Be careful not to touch or press the screen area when
adjusting the angle of the monitor.
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ENGLISH
Tidying up Cables
Arrange the cables using the cable holder as shown in the
illustration.
Cable Holder
Using the Kensington Lock
The connector for the Kensington security system is located
at the back of the monitor.
For more information on installation and usage, refer to
the Kensington lock owner’s manual or visit the website at
http://www.kensington.com
Connect the monitor to a table using the Kensington
security system cable.
.
Installing the Wall Mount Plate
This monitor meets the specifications for the wall mount
plate or other compatible devices.
1 Place the screen face down. To protect the monitor
panel (screen), cover the surface with a soft cloth or the
monitor protection pad included in the product package.
2 Attach the clear sheet to the back of the monitor and
align it with the screw holes.
Clear sheet (PET sheet)
3 Place the wall mount plate onto the monitor and align it
with the screw holes.
4 Tighten the four screws using a screwdriver to fix the
plate to the monitor.
NOTE
• The wall mount plate is sold separately.
• For more information on installation, refer to the wall
mount plate’s installation guide.
• Be careful not to apply too much force while mounting the
wall mount plate as it may cause damage to the screen.
NOTE
• The Kensington security system is optional. You can obtain
optional accessories from most electronics stores.
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Installing on the Wall
Install the monitor at least 100 mm (3.9 inches) away from
the wall and leave about 100 mm (3.9 inches) of space at
each side of the monitor to ensure sufficient ventilation.
Detailed installation instructions can be obtained from your
local retail store. Alternatively, please refer to the manual for
how to install and set up a tilting wall mounting bracket.
100 mm
(3.9 inches)
100 mm
(3.9 inches)
100 mm
(3.9 inches)
To install the monitor to a wall, attach a wall mounting
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.
1 If you use screws longer than the standard length, it may
damage the inside of the product.
2 A non-VESA standard screw may damage the product
and cause the monitor to fall. LG Electronics is not liable
for any accidents relating to the use of non-standard
screws.
100 mm
(3.9 inches)
NOTE
• Use the screws specified by VESA standards.
• The wall mount kit includes the installation guide and all
necessary parts.
• The wall mounting bracket is optional. You can obtain
optional accessories from your local dealer.
• The length of the screw may differ for each wall mounting
bracket. Be sure to use the proper length.
• For more information, please refer to the user manual for
the wall mounting bracket.
CAUTION
• Unplug the power cord before moving or installing the
monitor to avoid electric shock.
• Installing the monitor on the ceiling or on a slanted wall
may result in the monitor falling off, which could lead to
injury. Use an authorized LG wall mount and contact the
local dealer or qualified personnel.
• Applying excessive force when tightening screws may
cause damage to the monitor. Damage caused in this way
will not be covered by the product warranty.
• Use the wall mounting bracket and screws that conform
to VESA standards. Damage caused by the use or misuse
of inappropriate components will not be covered by the
product warranty.
• When measured from the back of the monitor, the length
of each installed screw must be 8 mm (0.3 inches) or less.
Wall Mount Plate
ENGLISH
Wall Mount 100 mm x 100 mm
(3.9 inches x 3.9 inches)
Stand Screw M4 x L10
Required Screws 4
Wall Mount Plate
(Optional)
RW120
Wall Mount Plate
Back of the Monitor
Screw
Dimensions
: M4 x L10
Max 8 mm
(0.3 inches)
Back of the Monitor
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ENGLISH
USING THE MONITOR
• The following instructions are based on the 34UM88
model. Illustrations in this manual may differ from the
actual product.
Press the joystick button, go to Menu → Quick Settings →
Input, and then select the input option.
CAUTION
• Do not press the screen for a prolonged time. This may
cause image distortion.
• Do not display a still image on the screen for a prolonged
time. This may cause image retention. Use a screensaver if
possible.
NOTE
• When connecting the power cord to the outlet, use a
grounded (3-hole) power strip or a grounded power outlet.
• The monitor may flicker when turned on in an area where
the temperature is low. This is normal.
• Sometimes red, green, or blue spots may appear on the
screen. This is normal.
Connecting to a PC
• This monitor supports the *Plug and Play feature.
* 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.
HDMI Connection
Transmits digital video and audio signals from your PC to the
monitor. Connect your PC to the monitor using the HDMI
cable as shown in the illustration below.
NOTE
• Make sure to use the supplied HDMI cable of the product.
Otherwise, this may cause the device to malfunction.
• Use a certified cable with the HDMI logo attached. If you
do not use a certified HDMI cable, the screen may not
display or a connection error may occur.
• Recommended HDMI cable types
- High-Speed HDMI®/TM cable
- High-Speed HDMI®/TM cable with Ethernet
CAUTION
• Connecting your PC to the monitor using the HDMI cable
may cause device compatibility issues.
• Using a DVI to HDMI / DP (DisplayPort) to HDMI cable may
cause compatibility issues.
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DisplayPort Connection
Transmits digital video and audio signals from your PC to the
monitor. Connect the monitor to your PC using the display
port cable as shown in the illustration below.
DP OUT
NOTE
• There may be no video or audio output depending on the
DP (DisplayPort) version of the PC.
• Make sure to use the supplied DisplayPort cable of
the product. Otherwise, this may cause the device to
malfunction.
• For using Mini DP to DP (Mini DisplayPort to DisplayPort)
cable, it is recommended that you use DisplayPort 1.2
cable.
Thunderbolt Connection
You can connect your high-resolution display or highperformance data device to the monitor via a Thunderbolt
( ) port. Connect your external device to the monitor using
the Thunderbolt cable as illustrated below.
34UM88, 34UB88
(sold separately)
NOTE
• The maximum data transmission rate of each port is
20 Gb/s.
• Make sure to use a Thunderbolt ( ) certified cable.
Otherwise, this may cause the device to malfunction.
• Thunderbolt ( ) is supported in such environments as
Windows 7, Windows 8.1, Windows 10, and Mac product.
• In accordance with Mac products may not support the
recommended resolution or the some features.
• The ability to set up dual monitors using the Thunderbolt
( ) and daisy-chaining technology depends on the
performance of your video card.
ENGLISH
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DP OUT
ENGLISH
Connecting AV Devices
HDMI Connection
HDMI transmits digital video and audio signals from your
AV device to the monitor. Connect your AV device to the
monitor using the HDMI cable as shown in the illustration
below.
NOTE
• Make sure to use the supplied HDMI cable of the product.
Otherwise, this may cause the device to malfunction.
• Use a certified cable with the HDMI logo attached. If you
do not use a certified HDMI cable, the screen may not
display or a connection error may occur.
• Recommended HDMI cable types
- High-Speed HDMI®/TM cable
- High-Speed HDMI®/TM cable with Ethernet
CAUTION
• Using a DVI to HDMI / DP (DisplayPort) to HDMI cable may
cause compatibility issues.
Connecting Peripherals
USB Cable connection - PC
The USB port on the product functions as a USB hub.
NOTE
• Make sure to install the most recent Windows OS service
pack before using the product.
• Peripheral devices are sold separately.
• A keyboard, mouse, or USB device can be connected to the
USB port.
• Quick Charge is only available through the USB1 port.
When Quick Charge is set to On, data transmission
through the USB1 port is not available (e.g. connecting
your keyboard, mouse, or other USB storage devices to the
monitor). (Go to General > Quick Charge to set Quick
Charge to On or Off.)
• The charging speed may vary depending on the device.
(sold separately)
CAUTION
Cautions When Using a USB Device
• A USB device with an automatic recognition program
installed, or that uses its own driver, may not be
recognized.
• Some USB devices may not be supported or may not work
properly.
• It is recommended to use a USB hub or hard disk drive
with power supplied. (If the power supply is not adequate,
the USB device may not be recognized properly.)
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DP OUT
HDMI/DP (DisplayPort) connection
To use USB 3.0, connect the A-B type USB 3.0 cable of the
product to the PC.
Peripheral devices connected to the USB IN port can be
controlled from the PC.
(sold separately)
(sold separately)
Connecting Headphones
Connect peripherals to the monitor via the headphones port.
Connect as illustrated.
(sold separately)
NOTE
• Peripheral devices are sold separately.
• If you use angled earphones, it may cause a problem
with connecting another external device to the monitor.
Therefore, it is recommended to use straight earphones.
ENGLISH
Thunderbolt connection
Peripheral devices connected to the USB IN port can be
controlled from the PC.
If you change the input on the menu while a device is in
connection via the Thunderbolt ( ) port, then the device in
connection via the USB port may not work properly.
34UM88, 34UB88
(sold separately)
(sold separately)
Angled
• Depending on the audio settings of the PC and external
device, headphones and speaker functions may be limited.
Straight
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18
USER SETTINGS
Activating the Main Menu
1 Press the joystick button on the bottom of the monitor.
2 Move the joystick up/down ( / ) and left/right ( / ) to set the options.
3 Press the joystick button once more to exit the main menu.
Joystick Button
Button Menu Status Description
Main menu disabled Enables the main menu.
Exits the main menu.
Main menu enabled
Main menu disabled Adjusts the monitor volume level.
Main menu enabled Enters the Menu features.
Main menu disabled Adjusts the monitor volume level.
Main menu enabled Enters the Input feature.
Main menu disabled Enables the main menu.
Main menu enabled Enters Game Mode.
Main menu disabled Enables the main menu.
Main menu enabled Turns off the monitor.
(Holding down the button to turn off the monitor. You can turn off
the monitor this way at any time, including when the OSD is on.)
Main Menu Features
Game Mode
Menu
Long Press: Monitor off
Exit
Monitor off
Input
Main Menu Description
Menu Configures the screen settings.
Game Mode Sets the picture mode for gaming.
Input Sets input mode.
Monitor off Turns off the monitor.
Exit Exits the main menu.
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User Settings
19
Menu Settings
1 To view the OSD menu, press the joystick button at the bottom of the monitor and then enter the Menu.
2 Configure the options by moving the joystick up/down/left/right.
3 To return to the upper menu or set other menu items, move the joystick to or pressing ( / Ok) it.
4 If you want to exit the OSD menu, move the joystick to until you exit.
• When you enter the menu, instructions on how to use the button will appear in the bottom right corner of the screen.
Quick Settings PBP Picture Sound General Reset
Each option is described below.
Menu Description
Quick Settings Brightness
Contrast
Volume Adjusts the volume level.
Input Selects the input mode.
Ratio Adjusts the aspect ratio of the screen.
PBP PBP Displays the screens of two input modes on one monitor.
Picture Picture Mode Changes the picture mode to the one optimized for a given feature.
Picture Adjust Adjusts the Sharpness, Black Level, and DFC.
Game Adjust Adjusts the Response Time, FreeSync, and Black Stabilizer.
Color Adjust Adjusts the Gamma, Color Temp, and Six Color.
Sound Adjusts the MaxxAudio, MaxxAudio Settings, and Midnight Mode.
General Sets Language, SMART ENERGY SAVING, Power LED, Automatic Standby,
Reset Restores the default settings.
Exit Exits the OSD menu.
Adjusts the color contrast and brightness of the screen.
NOTE
• You can adjust Mute / Unmute by moving the joystick button to in the Volume
menu.
DisplayPort 1.2, Quick Charge, Buzzer, and OSD Lock.
ENGLISH
CAUTION
• Your monitor’s OSD (On Screen Display) may differ slightly from that shown in this manual.
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Quick Settings
ENGLISH
1 To view the OSD menu, press the joystick button at the bottom of
the monitor and then enter the Menu.
2 Go to Quick Settings by moving the joystick.
3 Configure the options following the instructions that appear in the
bottom right corner.
4 To return to the upper menu or set other menu items, move the
joystick to or pressing ( / Ok) it.
5 If you want to exit the OSD menu, move the joystick to until you
exit.
Each option is described below.
Menu > Quick
Settings
Brightness
Contrast
Adjusts the color contrast and brightness of the screen.
Volume Adjusts the volume level.
Description
Quick Settings
PBP
Picture
Sound
General
Reset
Quick Settings
Brightness
Contrast
Volume
Input HDMI1 >
Ratio Wide >
/ : Move
/ : Ok
100 >
70 >
30 >
: Back
NOTE
• You can adjust Mute / Unmute by moving the joystick button to in the Volume menu.
Input Selects the input mode.
Ratio Adjusts the aspect ratio of the screen.
Wide Displays the video in widescreen, regardless of the video signal input.
Original Displays video according to the aspect ratio of the video signal input.
Cinema1 Enlarges the screen with an aspect ratio of 21:9. (at 1080p)
Cinema2 Enlarges the screen with an aspect ratio of 21:9, including the black box 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 (3440 x 1440).
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PBP
21
1 To view the OSD menu, press the joystick button at the bottom of
the monitor and then enter the Menu.
2 Go to PBP by moving the joystick.
Quick Settings
3 Configure the options following the instructions that appear in the
bottom right corner.
4 To return to the upper menu or set other menu items, move the
joystick to or pressing ( / Ok) it.
5 If you want to exit the OSD menu, move the joystick to until you
exit.
Each option is described below.
Menu > PBP Description
Sub Displays the screens of two input modes on one monitor.
PBP Connection
HDMI 1 - X O O
Main
Screen
(Left)
HDMI 2 X - O O
DisplayPort O O - X
Thunderbolt ( )
(only 34UM88,
34UB88 model)
Sound Out Main Selects the input for Main.
Sub Selects the input for Sub.
Swap Toggles between the main screen and sub screen in PBP mode.
Sub Full Converts the sub screen in PBP mode to wide screen.
Ratio Adjusts the aspect ratio of the main screen or sub screen.
Main Wide Displays the video to fit the PBP screen, regardless of the video
Original Displays the video in the aspect ratio of the video signal input on
Sub Wide Displays the video to fit the PBP screen, regardless of the video
Original Displays the video in the aspect ratio of the video signal input on
HDMI 1 HDMI 2 DisplayPort
O O X -
signal input.
the PBP screen.
signal input.
the PBP screen.
PBP
Sub Off >
Sound Out Main >
Swap
PBP
Sub Full
Ratio >
Picture
Sound
General
PBP Preview
Reset
HDMI1
/ : Move
/ : Ok
Sub Screen (Right)
(only 34UM88, 34UB88
ENGLISH
: Back
Thunderbolt ( )
model)
NOTE
• When the Sub mode is Off, Sound Out, Swap, Sub Full, and Ratio menus become disabled. The Main / Sub options for Ratio
become disabled if there is no signal.
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Picture
ENGLISH
1 To view the OSD menu, press the joystick button at the bottom of
the monitor and then enter the Menu.
2 Go to Picture by moving the joystick.
3 Configure the options following the instructions that appear in the
bottom right corner.
4 To return to the upper menu or set other menu items, move the
Quick Settings
Picture
Picture Mode Custom >
Picture Adjust >
Game Adjust >
PBP
Color Adjust >
joystick to or pressing ( / Ok) it.
5 If you want to exit the OSD menu, move the joystick to until you
Picture
exit.
Sound
General
Reset
/ : Move
/ : Ok
: Back
Each option is described below.
Menu > Picture Description
Picture Mode Custom Allows the user to adjust each element. The color mode of the main menu can be
adjusted.
Reader Optimizes the screen for viewing documents. You can brighten the screen in the OSD
menu.
Photo Optimizes the screen for photos.
Cinema Optimizes the screen for video.
Dark Room 1 This mode adjusts the brightness to the optimal level for working in a dark
environment.
Dark Room 2 This mode sets the brightness to a lower level than Dark Room 1.
Color Weakness This mode is for users who cannot distinguish between red and green. It enables
users with color weakness to easily distinguish between the two colors.
FPS Game 1 This mode is optimized for FPS games.
FPS Game 2 It has a higher Black Stabilizer value than FPS Game 1. It is suitable for very dark
FPS games.
RTS Game This mode is optimized for RTS Game.
Custom (Game) In this mode, users can customize various elements including game-related options.
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Menu > Picture Description
Picture Mode Calibration 1 Adjusts to the last calibrated screen.
Calibration 2 Adjusts to the previously calibrated screen.
NOTE
• If the Picture Mode is changed in the DP (DisplayPort) input, the screen may flicker or the resolution of
your PC screen may be affected.
• Calibration 2 : installation of TRUE COLOR PRO and proceeding with Calibration will enable this menu.
Picture Adjust Sharpness Adjusts the sharpness of the screen.
Black Level Sets the offset level (for HDMI only).
• Offset: as a reference for a video signal, this is the darkest color the monitor can
display.
High Keeps the current contrast ratio of the screen.
Low Lowers the black levels and raises the white levels from the current
contrast ratio of the screen.
DFC On Adjusts the brightness automatically according to the screen.
Off Disables the DFC feature.
Game Adjust Response Time Sets a response time for displayed pictures based on the speed of the screen.
For a normal environment, it is recommended that you use Middle. 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.
Middle Sets the response time to middle.
Low Sets the response time to low.
Off Does not use the response time improvement feature.
FreeSync Provides seamless and natural images by synchronizing the vertical frequency of the
input signal with that of the output signal.
23
ENGLISH
CAUTION
• Supported Interface: DisplayPort.
• Supported Graphic Card : A graphic card that supports AMD’s FreeSync is
necessary.
• Supported Version : Make sure to update the graphic card to the latest driver.
• For more information and requirement, refer to AMD website at
http://www.amd.com/FreeSync
On FreeSync function on. (Setting FreeSync to On disables the
DisplayPort 1.2 option.)
Off FreeSync function off.
Black Stabilizer You can control the black contrast to have better visibility in dark scenes.
Increasing the Black Stabilizer value brightens the low gray level area on the screen.
(You can easily distinguish objects on dark game screens.)
Reducing the Black Stabilizer value darkens the low gray level area and increases
the dynamic contrast on the screen.
.
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24
Menu > Picture Description
Color Adjust Gamma Custom gamma settings: Gamma 0, Gamma 1, Gamma 2, Off. The higher the
gamma value, the darker the image becomes. Likewise, the lower the gamma value,
the lighter the image becomes. If you do not need to adjust the gamma settings,
select Off.
Color Temp Custom The user can adjust it to red, green, or blue by customization.
Warm Sets the screen color to a reddish tone.
Medium Sets the screen color to between a red and blue tone.
Cool Sets the screen color to a bluish tone.
Red You can customize the picture color using Red, Green, and Blue colors.
Green
Blue
Six Color Meets the user requirements for colors by adjusting the hue and saturation of the six
colors (Red, Green, Blue, Cyan, Magenta, and Yellow) and then saving the settings.
Hue Adjusts the tone of the screen colors.
Saturation Adjusts the saturation of the screen colors. The lower the value, the
less saturated and brighter the colors become. The higher the value,
the more saturated and darker the colors become.
Reset Returns color to the default settings.
Page 25
Sound
25
1 To view the OSD menu, press the joystick button at the bottom of
the monitor and then enter the Menu.
2 Go to Sound by moving the joystick.
Quick Settings
3 Configure the options following the instructions that appear in the
bottom right corner.
PBP
4 To return to the upper menu or set other menu items, move the
joystick to or pressing ( / Ok) it.
5 If you want to exit the OSD menu, move the joystick to until you
exit.
Each option is described below.
Menu > Sound Description
MaxxAudio On
Off Disables the MaxxAudio function.
MaxxAudio Settings The user can set the sound quality manually.
MaxxBass Bass Enhancement.
MaxxTreble Treble Enhancement.
MaxxDialog Dialog Enhancement.
Maxx3D Enhances the three dimensional effect of the sound.
Reset Returns the sound quality to the default settings.
Midnight Mode On Lets you enjoy rich and full sound at a low volume.
Off Disables Midnight Mode.
MaxxAudio® by Waves, recipient of a Technical GRAMMY Award® is a suite of
studio-quality sound tools for a superior listening experience.
Picture
Sound
General
Reset
Sound
MaxxAudio On >
MaxxAudio Settings >
Midnight Mode Off >
/ : Move
/ : Ok
: Back
ENGLISH
Page 26
26
General
ENGLISH
1 To view the OSD menu, press the joystick button at the bottom of
the monitor and then enter the Menu.
2 Go to General by moving the joystick.
3 Configure the options following the instructions that appear in the
bottom right corner.
4 To return to the upper menu or set other menu items, move the
joystick to or pressing ( / Ok) it.
5 If you want to exit the OSD menu, move the joystick to until you
exit.
Each option is described below.
Menu > General Description
Language Sets the menu screen to the desired language.
SMART ENERGY
SAVING
Power LED Turns the power LED on the front of the monitor On or Off.
Automatic
Standby
DisplayPort 1.2 Enables or disables DisplayPort 1.2.
Conserve energy by using luminance compensation algorithm.
High Saves energy using the high-efficiency SMART ENERGY SAVING feature.
Low Saves energy using the low-efficiency SMART ENERGY SAVING feature.
Off Disables the SMART ENERGY SAVING feature.
On The power LED turns on automatically.
Off The power LED turns off.
Feature that automatically turns off the monitor when there is no movement on the screen for a period
of time. You can set a timer for the auto-off function. (Off, 4 H, 6 H, and 8 H)
Quick Settings
PBP
Picture
Sound
General
Reset
General
Language English >
SMART ENERGY SAVING Low >
Power LED Off >
Automatic Standby Off >
DisplayPort 1.2 Disable >
Quick Charge Off >
Buzzer On >
OSD Lock Off >
/ : Move
/ : Ok
: Back
NOTE
• Be sure to configure this option according to the DisplayPort version supported by your graphics card.
Set this option to Disable if your graphics card does not support DisplayPort 1.2.
• When DisplayPort 1.2 is disabled, you cannot use the 10-bit output of your video card.
Page 27
Menu > General Description
Quick Charge Quick Charge is a feature that rapidly charges the device connected to the USB 3.0 port.
On Enables Quick Charge.
Off Disables Quick Charge.
NOTE
• Quick Charge is only available through the USB1 port. When Quick Charge is set to On, data
transmission through the USB1 port is not available (e.g. connecting your keyboard, mouse, or other
USB storage devices to the monitor).
Buzzer This feature lets you set the sound generated from Buzzer when your monitor powers on to On or Off.
On Enables your monitor's Buzzer.
Off Disables your monitor's Buzzer.
OSD Lock This feature disables the configuration and adjustment of menus.
On Enables OSD Lock.
Off Disables OSD Lock.
NOTE
• All features are disabled except Brightness, Contrast, Volume, Input in Quick Settings, and OSD
Lock in General.
27
ENGLISH
NOTE
• Saving Data depends on the Panel. These values vary by panel and vendor. If option of SMART ENERGY SAVING is High or
Low, monitor luminance becomes higher or lower depending upon the source.
Page 28
28
Reset
ENGLISH
1 To view the OSD menu, press the joystick button at the bottom of the
monitor and then enter the Menu.
2 Go to Reset by moving the joystick.
3 Configure the options following the instructions that appear in the
bottom right corner.
4 To return to the upper menu or set other menu items, move the
joystick to or pressing ( / Ok) it.
5 If you want to exit the OSD menu, move the joystick to until you
exit.
Each option is described below.
Menu > Reset Description
Do you want to reset your settings?
Reset Restores the default settings.
Cancel Cancel the reset.
Quick Settings
PBP
Picture
Sound
General
Reset
Reset
Do you want to reset your settings?
Reset
Cancel
/ : Move
/ : Ok
: Back
Page 29
TROUBLESHOOTING
Nothing is displayed on the screen.
Is the monitor's power cord plugged
in?
Is the power LED on? • Check the power cable connection and press the power button.
Is the power on and the power LED
displaying white?
Is the power LED blinking? • If the monitor is in sleep mode, move the mouse, or press any key on the keyboard, to
• Check if the power cord is correctly plugged into the power outlet.
• Check that the connected input is enabled (Menu > Quick Settings > Input).
switch the display on.
• Check if the computer is turned on.
29
ENGLISH
Is the OUT OF RANGE message
being displayed?
Is the No Signal message being
displayed?
The screen may not be displayed
properly when configuring
DisplayPort 1.2 in a Mac product.
The OSD Lock message is being displayed.
Are some functions not available
when you press the Menu button?
The screen retains an image.
Does image sticking occur even when
the monitor is turned off?
Screen display is unstable and shaky. / Images displayed on the monitor leave shadow trails.
Did you select the appropriate
resolution?
• This occurs when signals transferred from the PC (Graphics 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 appropriate frequency.
• This is displayed when the signal cable between the PC and the monitor is missing or
disconnected. Check the cable and reconnect it.
• DisplayPort 1.2 may not be supported depending upon the Mac product. Please
contact the manufacturer.
• The OSD is locked. Go to Menu > General and set OSD Lock to Off.
• Displaying a still image for a prolonged time may cause damage to the screen,
resulting in the retention of the image.
• To extend the lifetime of the monitor, use a screensaver.
• If the selected resolution is HDMI 1080i 60/50 Hz (interlaced), the screen may be
flickering. Change the resolution to 1080p or the recommended resolution.
NOTE
• Vertical Frequency: In order to display an image, the screen must be refreshed dozens of times per 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. If 1 is divided by the
horizontal interval, the result is the number of horizontal lines displayed per second. This is called horizontal frequency and is
represented by kHz.
Page 30
ENGLISH
30
NOTE
• Check if the graphics card’s resolution or frequency is within the range allowed by the monitor and set it to the recommended
(optimal) resolution Control Panel > Display > Settings in Windows. (The settings may differ depending on the operating
system (OS) you use.)
• Not setting the Graphics card to the recommended (optimal) resolution may result in blurred text, a dimmed screen, a
truncated display area or misalignment of the display.
• The setting methods may be different depending on the computer or operating system, and some resolutions may not be
available depending on the performance of the Graphics card. If this is the case, contact the manufacturer of the computer or
graphics card for assistance.
• Some Graphics cards may not support 3440 x 1440 resolution. If the resolution cannot be displayed, contact the
manufacturer of your Graphics card.
The display color is abnormal.
Does the display appear discolored
(16 colors)?
Does the display color appear
unstable or monochrome?
Are there spots on the screen? • When using the monitor, pixilated spots (red, green, blue, white, or black) may appear
• Set the color to 24 bit (true color) or higher. In Windows, go to Control Panel >
Display > Settings > Color Quality. (The settings may differ depending on the
operating system (OS) you use.)
• Check if the signal cable is connected properly. Reconnect the cable or reinsert the
PC's Graphics card.
on the screen. This is normal for an LCD screen. It is not an error, nor is it related to
the monitor's performance.
Do you see an "Unrecognized monitor, Plug and Play (VESA DDC) monitor found" message?
Have you installed the display driver? • Be sure to install the display driver from the display driver CD (or diskette) that
comes with your display. Or, you can also download the driver from our web site:
No sound from the headphone port.
Are images displayed using DP
(DisplayPort) or HDMI input without
sound?
http://www.lg.com
• Make sure to check if the
• Make sure that the headphone port connections are made properly.
• Try increasing the volume with the joystick.
• Set the audio output of the PC to the monitor you are using. On Microsoft Windows,
go to Control Panel > Hardware and Sound > Sound > set the Monitor as default
device. (The settings may differ depending on the operating system (OS) you use.)
.
graphics
card supports Plug and Play function.
Page 31
PRODUCT SPECIFICATION
34UM88, 34UB88
LCD Screen Type TFT (Thin Film Transistor)
LCD (Liquid Crystal Display) Screen
Color Depth HDMI 8-bit color is supported.
DP (DisplayPort)
Thunderbolt ( )
Pixel Pitch 0.2325 mm x 0.2325 mm
Resolution Max Resolution
Recommended
Resolution
Video Signal Horizontal Frequency 30 kHz to 90 kHz
Vertical Frequency 56 Hz to 61 Hz
Synchronization Separate Sync.
Input Connector
Power Sources Power Rating 19 V 5.6 A
AC/DC Adapter ADS-110CL-19-3 190110G type, manufactured by Honor
Environmental
Conditions
H/P OUT, HDMI IN 1, HDMI IN 2, DP (DisplayPort) IN, Thunderbolt ( ) x 2, USB UP, USB ( ) 1, 2
Power Consumption
(Typical)
Output: 19 V 5.79 A
Operating Conditions Temperature 0 °C to 40 °C (32 °F to 104 °F)
Storing Conditions Temperature -20 °C to 60 °C (-4 °F to 140 °F)
3440 x 1440 @ 60 Hz
34UM88 Operating Mode:
70 W (Typical, USB excluded) (Outgoing condition)*
56.73 W (ENERGY STAR® standard)**
34UB88 Operating Mode:
47.9 W (Typical, USB excluded) (Outgoing condition)*
32.8 W (ENERGY STAR® standard)**
Sleep Mode ≤ 1.2 W
Off Mode ≤ 0.3 W
Humidity Less than 80 %
Humidity Less than 85 %
31
ENGLISH
8-bit / 10-bit color is supported.
Dimensions Monitor Size (Width x Height x Depth)
With Stand 829.9 mm x 428.9 mm x 252.4 mm
(32.6 inches x 16.8 inches x 9.9 inches)
Without Stand 829.9 mm x 379.8 mm x 49.2 mm
(32.6 inches x 14.9 inches x 1.9 inches)
Weight (Without
Packaging)
Specifications are subject to change without notice.
* The Operating Mode of Power Consumption is measured with LGE test standard. (Full White pattern, Maximum resolution)
** The Power Consumption level can be different by operating condition and monitor setting.
** The Operating Mode of Power Consumption is measured with ENERGY STAR® test standard.
With Stand 8.4 kg (18.5 lbs)
Without Stand 6.3 kg (13.8 lbs)
Page 32
32
34UM88C
ENGLISH
LCD Screen Type TFT (Thin Film Transistor)
LCD (Liquid Crystal Display) Screen
Color Depth HDMI 8-bit color is supported.
DP (DisplayPort) 8-bit / 10-bit color is supported.
Pixel Pitch 0.2325 mm x 0.2325 mm
Resolution Max Resolution
Recommended
Resolution
Video Signal Horizontal Frequency 30 kHz to 90 kHz
Vertical Frequency 56 Hz to 61 Hz
Synchronization Separate Sync.
Input Connector H/P OUT, HDMI IN 1, HDMI IN 2, DP (DisplayPort) IN, USB UP, USB ( ) 1, 2
Power Sources Power Rating 19 V 4.3 A
Power Consumption
(Typical)
AC/DC Adapter ADS-110CL-19-3 190110G type, manufactured by Honor
Output: 19 V 5.79 A
Environmental
Conditions
Operating Conditions Temperature 0 °C to 40 °C (32 °F to 104 °F)
Storing Conditions Temperature -20 °C to 60 °C (-4 °F to 140 °F)
3440 x 1440 @ 60 Hz
Operating Mode: 70 W (Typical, USB excluded) (Outgoing condition)*
56.73 W (ENERGY STAR® standard)**
Sleep Mode ≤ 1.2 W
Off Mode ≤ 0.3 W
Humidity Less than 80 %
Humidity Less than 85 %
Dimensions Monitor Size (Width x Height x Depth)
With Stand 829.9 mm x 428.9 mm x 252.4 mm
(32.6 inches x 16.8 inches x 9.9 inches)
Without Stand 829.9 mm x 379.8 mm x 49.2 mm
(32.6 inches x 14.9 inches x 1.9 inches)
Weight (Without
Packaging)
Specifications are subject to change without notice.
* The Operating Mode of Power Consumption is measured with LGE test standard. (Full White pattern, Maximum resolution)
** The Power Consumption level can be different by operating condition and monitor setting.
** The Operating Mode of Power Consumption is measured with ENERGY STAR® test standard.
With Stand 8.4 kg (18.5 lbs)
Without Stand 6.3 kg (13.8 lbs)
Page 33
Factory Support Mode
33
34UM88, 34UB88
(Preset Mode, HDMI/ DisplayPort/ Thunderbolt PC)
34UM88C
(Preset Mode, HDMI/ DisplayPort PC)
Preset Mode
640 x 480 31.469 59.94 -/-
800 x 600 37.879 60.317 +/+
1024 x 768 48.363 60 -/-
1152 x 864 54.347 60.05 +/+
1280 x 720 45 60 +/+
1280 x 1024 63.981 60.02 +/+
1600 x 900 60 60 +/+
1680 x 1050 65.29 59.954 -/+
1720 x 1440 88.83 59.98 +/+
1920 x 1080 67.5 60 +/-
2560 x 1080 66.7 60 -/+
3440 x 1440 43.82 29.99 +/+
3440 x 1440 73.68 49.99 +/+
3440 x 1440 88.82 59.97 +/+
Horizontal Frequency
(kHz)
Vertical Frequency
(Hz)
ENGLISH
Polarity (H/V) Remarks
Page 34
34
HDMI Timing (Video)
ENGLISH
Preset Mode
480p 31.5 60
576p 31.25 50
720p 45 60
720p 37.5 50
1080p 67.5 60
1080p 56.25 50
1080p 56.25 60 2560 x 1080p
1080p 66 50 2560 x 1080p
Horizontal Frequency
(kHz)
Vertical Frequency
(Hz)
Remarks
Power LED
Mode LED Color
On Mode White (Only 15 seconds)
Sleep Mode Flashing White
Off Mode Off
Page 35
To obtain the source code under GPL, LGPL, MPL, and other
open source licenses, that is contained in this product, please
visit
http://opensource.lge.com
.
In addition to the source code, all referred license terms,
warranty disclaimers and copyright notices are available for
download.
LG Electronics will also provide open source code to you
on CD-ROM for a charge covering the cost of performing
such distribution (such as the cost of media, shipping, and
handling) upon email request to
. This
offer is valid for three (3) years from the date on which you
purchased the product.
This device meets the EMC requirements for home appliances
(Class B) and is intended for home usage. This device can be
used in all regions. Read the owner's manual (CD) carefully
and keep it at hand. Please note that the label attached to the
product provides information for technical support.
Model
Serial No.
Declaration of Conformity
Trade Name: LG
Model: 34UM88, 34UM88C, 34UB88
Responsible Party: LG Electronics Inc.
Address: 1000 Sylvan Ave. Englewood Cliffs NJ 07632
U.S.A
TEL: 201-266-2534
(for 34UB88)
ENERGY STAR® is a set of power-saving guidelines issued
by the U.S.Environmental Protection Agency (EPA).
As an ENERGY STAR® Partner LGE U. S. A., Inc. has
determined that this product meets the ENERGY STAR®
guidelines for energy efficiency.
Refer to ENERGYSTAR.gov for more information on the ENERGY STAR®
program.
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