www.lg.com
Owner's Manual
IPS LED MONITOR
LED MONITOR*
31MU97
31MU97C
31MU97Z
Please read the safety information carefully
before using the product.
* LG LED Monitors are LCD Monitors with LED Backlighting.
ENGLISH
2
TABLE OF CONTENTS
TABLE OF CONTENTS
3 LICENSE
4 ASSEMBLING AND
PREPARING
4 Product Composition
5 Product and Button Description
5 - How to Use the Joystick Button
6 - Input Connector
7 Moving and Lifting the Monitor
8 Installing the Monitor
8 - Assembling the Stand
9 - Installing on a Table
9 - Adjusting the Stand Height
10 - Adjusting the Angle
10 - Tidying up Cables
11 - Pivot Feature
12 - Using the Kensington Lock
12 - Detaching the Stand Body
13 - Installing the Wall Mount Plate
13 - Installing on the Wall
15 USING THE MONITOR
15 Connecting to a PC
15 - HDMI Connection
16 - (Mini) DisplayPort Connection
16 - Thunderbolt( ) Connection
17 Connecting AV Devices
17 - HDMI Connection
17 Connecting Peripherals
17 - USB Cable connection - PC
19 - Connecting Headphones
20 USER SETTINGS
20 Activating the Main Menu
20 - Main Menu Features
21 User Settings
21 - Menu Settings
22 - Ratio
23 - Function
25 - PBP
27 - Picture
29 - Color
30 - Settings
32 - Reset
33 TROUBLESHOOTING
35 PRODUCT SPECIFICATION
37 Factory Support Mode
37 HDMI Timing (Video)
37 Power LED
38 PROPER POSTURE
38 Proper Posture for Using the Monitor
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.
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3
LICENSE
LICENSE
Each model has different licenses. Visit www.lg.com for more information on the 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, 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.
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4
ASSEMBLING AND PREPARING
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 HDMI cable Mini DisplayPort Cable
A-B Type USB 3.0 Cable Stand Base Stand Body
2 Screws
(M4 x 10)
Cable Holder
or
y
Always use genuine LG components to ensure safety and product performance.
y
The product warranty will not cover damage or injury caused by the use of unauthorized components.
y
It is recommend that use the supplied components.
y
If you use generic cables not certified by LG, the screen may not display or there may be image
noises.
CAUTION
y
The components may look different from those illustrated here.
y
Without prior notice, all product information and specifications contained in this manual are subject to
change to improve the performance of the product.
y
To purchase optional accessories, visit an electronics store or an online shopping site, or contact the
retailer from which you purchased the product.
y
The power cord provided may differ depending upon the region.
NOTE
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5
ASSEMBLING AND PREPARING
Product and Button Description
Joystick Button
Power LED
y
On Power on
y
Off Power off
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
Press and hold the joystick button once with your finger to turn off
the monitor.
◄/►
Volume
Control
You can control the volume by moving the joystick button left/right.
y
The joystick button is located at the bottom of the monitor.
y
Before turning on the monitor, please make sure that the switch on the rear side of product is On.
NOTE
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6
ASSEMBLING AND PREPARING
Input Connector
AC-IN
USB IN 2
DP-IN
HDMI IN 1
H/P
USB UP
USB IN 1
HDMI IN 2
mDP-IN
USB IN 3
5 V 1.1 A
USB IN 2
DP-IN
HDMI IN 1
H/P
USB UP USB IN 1
HDMI IN 2
mDP-IN
USB IN 3
5 V 1.1 A
AC-IN
31MU97 31MU97C
31MU97Z
Switch
On
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7
ASSEMBLING AND PREPARING
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 trans-
portation, regardless of its shape or size.
y
Place the monitor in the original box or pack-
ing material before attempting to move it.
y
Before moving or lifting the monitor, discon-
nect the power cord and all other cables.
y
Hold the bottom and side of the monitor frame
firmly. Do not hold the panel itself.
y
When holding the monitor, the screen should
face toward you to prevent it from being
scratched.
y
When transporting the monitor, do not expose
the monitor to shock or excessive vibration.
y
When moving the monitor, keep it upright and
never turn the monitor on its side or tilt it side-
ways.
y
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.
y
If you use the monitor panel without the stand
base, its joystick button may cause the moni-
tor to become unstable and fall, resulting in
damage to the monitor or human injury. In
addition, this may cause the joystick button to
malfunction.
CAUTION
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8
ASSEMBLING AND PREPARING
Installing the Monitor
Assembling the Stand
y
To protect the screen from scratches, cover
the surface with a soft cloth.
y
Illustrations in this document represent typi-
cal procedures, so they may look different
from the actual product.
y
Applying excessive force when tightening
screws may cause damage to the monitor.
Damage caused in this way will not be cov-
ered by the product warranty.
y
Do not carry the monitor upside down by just
holding the base. This may cause the moni-
tor to fall off the stand and could result in
personal injury.
y
When lifting or moving the monitor, do not
touch the monitor screen. The force applied
to the monitor screen may cause damage to
it.
CAUTION
y
You can disassemble the stand in the
reverse order of the assembly.
NOTE
1
2
3
Stand Body
Stand Base
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9
ASSEMBLING AND PREPARING
Installing on a Table
1
Lift the monitor and place it on the table in an
upright position. Place the monitor at least
10 cm (3.9 inch) away from the wall to ensure
sufficient ventilation.
10 cm
10 cm (3.9 inch)
10 cm
10 cm
2
Connect the power cord to the product before
connecting it to the wall outlet.
3
Press the joystick button on the bottom of the
monitor to turn on the monitor.
y
Unplug the power cord before moving or
installing the monitor. There is risk of electric
shock.
CAUTION
Adjusting the Stand Height
1
Place the monitor mounted on the stand base
in an upright position.
2
Push the head downward and pull out the
locking pin.
Head
Locking pin
3
Handle the monitor with both hands for safety.
4
The height can be adjusted up to 140.0 mm
(5.5 inch).
140.0 mm (5.5inch)
y
Once the pin is removed, it is not necessary
to re-insert it to adjust the height.
CAUTION
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10
ASSEMBLING AND PREPARING
y
Do not put your fingers or
hand between the screen
and the base (chassis) when
adjusting the screen's height.
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 back-
ward from -5° to 15° for a comfortable
viewing experience.
-515
FrontRear
Tidying up Cables
Arrange the cables using the cable holder as
shown in the illustration.
y
To avoid injury to the fingers when adjusting
the screen, do not hold the lower part of the
monitor's frame as illustrated below.
-515
y
Be careful not to touch or press the screen
area when adjusting the angle of the monitor.
-515
WARNING
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11
ASSEMBLING AND PREPARING
Pivot Feature
The pivot feature allows the monitor to rotate 90°
clockwise.
Stand
Head
WARNING
y
To avoid scratching the stand base, make sure
that when rotating the monitor using the pivot
feature, the stand does not make contact with
the monitor.
1
Raise the monitor to the maximum height.
2
Adjust the angle of the monitor in the direction
of the arrow as shown in the figure.
15°
3
Rotate the monitor clockwise as shown in the
figure.
4
Complete the installation by rotating the moni-
tor 90° as shown below.
y
Auto Pivot feature of the display is not sup-
ported.
y
The screen can be rotated easily using the
screen pivot shortcut key provided with your
Windows operating system. Note that some
Windows versions and some graphics card
drivers may use different settings for the
screen pivot key or may not support the pivot
key at all.
y
Supported Windows versions: Windows 7 and
Windows 8.1
y
Windows screen pivot shortcut keys
-
0°: Ctrl + Alt + Up arrow key (↑)
-
90°: Ctrl + Alt + Left arrow key (←)
-
180°: Ctrl + Alt + Down arrow key (↓)
-
270°: Ctrl + Alt + Right arrow key (→)
NOTE
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12
ASSEMBLING AND PREPARING
Using the Kensington Lock
The Kensington security system connector is
located at the back of the Monitor set.
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 Kensing-
ton security system cable.
y
The Kensington security system is optional.
You can obtain optional accessories from most
electronics stores.
NOTE
Detaching the Stand Body
1
Place the monitor's screen face down. To
protect the screen from scratches, cover the
surface with a soft cloth.
2
Using a screwdriver, remove the 2 screws and
detach the stand from the monitor.
y
Take care when rotating the monitor if the
cable is connected.
y
To avoid injury when rotating the display, do
not place your fingers between the display and
the stand base.
WARNING
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13
ASSEMBLING AND PREPARING
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
screen from scratches, cover the surface with
a soft cloth.
2
Using a screwdriver, remove the 2 screws and
detach the stand from the monitor.
3
Place the wall mount plate onto the monitor
and align it with the screw holes.
4
Tighten the four screws to fix the plate to the
monitor using a screwdriver.
y
The wall mount plate is sold separately.
y
For more information on installation, refer to
the wall mount plate's installation guide.
y
Be careful not to apply too much force while
mounting the wall mount plate as it may cause
damage to the screen.
NOTE
Installing on the Wall
Install the monitor at least 10 cm (3.9 inch) away
from the wall and leave about 10 cm (3.9 inch)
of space at each side of the monitor to ensure
sufficient ventilation. Detailed installation instruc-
tions 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.
10 cm (3.9 inch)
10 cm
10 cm
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 se-
curely 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 Elec-
tronics is not liable for any accidents relating to
the use of non-standard screws.
Wall Mount (A x B) 100 x 100
Stand Screw
M4 x L10
Required Screws 4
Wall Mount Plate
(Optional)
RW120
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14
ASSEMBLING AND PREPARING
y
Wall Mount (A x B)
A
B
y
Use the screws specified by VESA standards.
y
The wall mount kit includes the installation guide
and all necessary parts.
y
The wall mounting bracket is optional. You can
obtain optional accessories from your local dealer.
y
The length of the screw may differ for each wall
mounting bracket. Be sure to use the proper
length.
y
For more information, please refer to the user
manual for the wall mounting bracket.
NOTE
y
Unplug the power cord before moving or install-
ing the monitor to avoid electric shock.
y
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 quali-
fied personnel.
y
Applying excessive force when tightening
screws may cause damage to the monitor. Dam-
age caused in this way will not be covered by
the product warranty.
y
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.
y
When measured from the back of the monitor,
the length of each installed screw must be 8 mm
(0.3 inch) or less.
Wall Mount Plate
Back of the Monitor
Screw
Dimensions
: M4 x L10
Wall Mount Plate
Back of the Monitor
Max 8 mm (0.3 inch)
CAUTION
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15
USING THE MONITOR
USING THE MONITOR
y
The following instructions are based on the
31MU97Z model. Illustrations in this manual
may differ from the actual product.
Press the joystick button, go to Menu → Easy con-
trol → Input, and then select the input option.
y
Do not press the screen for a prolonged time.
This may cause image distortion.
y
Do not display a still image on the screen
for a prolonged time. This may cause image
retention. Use a screensaver if possible.
CAUTION
y
When connecting the power cord to the out-
let, use a grounded (3-hole) power strip or a
grounded power outlet.
y
The monitor may flicker when turned on in
an area where the temperature is low. This is
normal.
y
Sometimes red, green, or blue spots may ap-
pear on the screen. This is normal.
NOTE
Connecting to a PC
y
This monitor supports the *Plug and Play fea-
ture.
* Plug and Play: A feature that allows you to add a
device to your computer without having to recon-
figure 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.
DP OUT
H/P
HDMI IN 1 HDMI IN 2
HDMI IN 1 HDMI IN 2
USB IN 2USB UP USB IN 1
US
B UP
USB IN 3
DP-IN
USB IN 2USB IN 1 USB IN 3
5 V 1.1 A
5 V 1.1 A
mDP-IN
DP OUT
DP-IN
mDP OUT
y
Make sure to use the supplied HDMI cable of
the product. Otherwise, this may cause the
device to malfunction.
y
Connecting your PC to the monitor using the
HDMI cable may cause device compatibility
issues.
y
Using a DVI to HDMI / DP (DisplayPort) to
HDMI cable may cause compatibility issues.
y
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 con-
nection error may occur.
y
Recommended HDMI cable types
-
High-Speed HDMI
®
/
TM
Cable
-
High-Speed HDMI
®
/
TM
Cable with Ethernet
CAUTION
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16
USING THE MONITOR
(Mini) DisplayPort Connection
Transmits digital video and audio signals from your
PC to the monitor. Connect the monitor to your PC
using the displayport cable as shown in the illustra-
tion below:
DisplayPort
DP OUT
H/P
HDMI IN 1 HDMI IN 2
HDMI IN 1 HDMI IN 2
USB IN 2USB UP USB IN 1
US
B UP
USB IN 3
DP-IN
USB IN 2USB IN 1 USB IN 3
5 V 1.1 A
5 V 1.1 A
mDP-IN
DP OUT
DP-IN
mDP OUT
Mini DisplayPort
DP OUT
H/P
HDMI IN 1 HDMI IN 2
HDMI IN 1 HDMI IN 2
USB IN 2USB UP USB IN 1
US
B UP
USB IN 3
DP-IN
USB IN 2USB IN 1 USB IN 3
5 V 1.1 A
5 V 1.1 A
mDP-IN
DP OUT
DP-IN
mDP OUT
NOTE
y
There may be no video or audio output de-
pending on the DP (DisplayPort) version of the
PC.
y
Make sure to use the supplied Mini Display-
Port cable of the product. Otherwise, this may
cause the device to malfunction.
y
If you use generic cables not certified by LG,
the screen may not display or there may be
image noises.
Thunderbolt( ) Connection
You can connect your high-resolution display or
high-performance data device to the monitor via
a Thunderbolt port. Connect your external device
to the monitor using the Thunderbolt cable as
illustrated below.
31MU97Z
DP OUT
H/P
HDMI IN 1 HDMI IN 2
HDMI IN 1 HDMI IN 2
USB IN 2USB UP USB IN 1
US
B UP
USB IN 3
DP-IN
USB IN 2USB IN 1 USB IN 3
5 V 1.1 A
5 V 1.1 A
mDP-IN
DP OUT
DP-IN
mDP OUT
(sold separately)
y
The maximum data transmission rate of each port
is 20 Gb/s.
y
Make sure to use a Thunderbolt (
) certified
cable. Otherwise, this may cause the device to
malfunction.
y
Thunderbolt (
) is supported in such environ-
ments as Windows 7, Windows 8.1, and Mac
product.
y
In accordance with Mac products may not sup-
port the recommended resolution or the some
features. For more information, refer to the
support information card of the graphic card
which is provided separately.
y
The ability to set up dual monitors using the
Thunderbolt (
) and daisy-chaining technology
depends on the performance of your video
card.
NOTE
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17
USING THE MONITOR
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.
DP OUT
H/P
HDMI IN 1 HDMI IN 2
HDMI IN 1 HDMI IN 2
USB IN 2USB UP USB IN 1
US
B UP
USB IN 3
DP-IN
USB IN 2USB IN 1 USB IN 3
5 V 1.1 A
5 V 1.1 A
mDP-IN
DP OUT
DP-IN
mDP OUT
y
Make sure to use the supplied HDMI cable of
the product. Otherwise, this may cause the
device to malfunction.
y
Using a DVI to HDMI / DP (DisplayPort) to
HDMI cable may cause compatibility issues.
y
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 connec-
tion error may occur.
y
Recommended HDMI cable types
-
High-Speed HDMI
®
/
TM
Cable
-
High-Speed HDMI
®
/
TM
Cable with Ethernet
NOTE
Connecting Peripherals
USB Cable connection - PC
The USB port on the product functions as a USB
hub.
y
Make sure to install the most recent Windows
OS service pack before using the product.
y
Peripheral devices are sold separately.
y
A keyboard, mouse, or USB device can be
connected to the USB port.
NOTE
Cautions When Using a USB Device
y
A USB device with an automatic recognition
program installed, or that uses its own driver,
may not be recognized.
y
Some USB devices may not be supported or
may not work properly.
y
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.)
CAUTION
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18
USING THE MONITOR
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.
31MU97Z
(sold separately)
DP OUT
H/P
HDMI IN 1 HDMI IN 2
HDMI IN 1 HDMI IN 2
USB IN 2USB UP USB IN 1
US
B UP
USB IN 3
DP-IN
USB IN 2USB IN 1 USB IN 3
5 V 1.1 A
5 V 1.1 A
mDP-IN
DP OUT
DP-IN
mDP OUT
(sold separately)
HDMI/ (Mini) 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.
DP OUT
H/P
HDMI IN 1 HDMI IN 2
HDMI IN 1 HDMI IN 2
USB IN 2USB UP USB IN 1
US
B UP
USB IN 3
DP-IN
USB IN 2USB IN 1 USB IN 3
5 V 1.1 A
5 V 1.1 A
mDP-IN
DP OUT
DP-IN
mDP OUT
(sold separately)
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19
USING THE MONITOR
Connecting Headphones
Connect peripherals to the monitor via the head-
phones port. Connect as illustrated.
DP OUT
H/P
HDMI IN 1 HDMI IN 2
HDMI IN 1 HDMI IN 2
USB IN 2USB UP USB IN 1
US
B UP
USB IN 3
DP-IN
USB IN 2USB IN 1 USB IN 3
5 V 1.1 A
5 V 1.1 A
mDP-IN
DP OUT
DP-IN
mDP OUT
(sold separately)
y
Peripheral devices are sold separately.
y
If you use angled earphones, it may cause
a problem with connecting another external
device to the monitor. Therefore, it is recom-
mended to use straight earphones.
Angled Straight
y
Depending on the audio settings of the PC
and external device, headphones and speaker
functions may be limited.
NOTE
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20
USER SETTINGS
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.
Main menu enabled
Exits the main menu.
(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 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 PBP feature.
▲
Main menu disabled Enables the main menu.
Main menu enabled Enters the Picture Mode feature.
▼
Main menu disabled Enables the main menu.
Main menu enabled Turns off the monitor.
Main Menu Features
Long press: Monitor off
Picture Mode
Exit
Menu PBP
Monitor off
Main Menu Description
Menu Configures the screen settings.
Picture Mode Optimizes the screen for picture mode.
PBP Displays the screens of two input modes on one monitor.
Monitor off Turns off the monitor.
Exit Exits the main menu.
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21
USER SETTINGS
User Settings
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.
y
When you enter the menu, instructions on how to use the button will appear in the bottom right corner
of the screen.
Easy control Function PBP Screen Settings Reset
Each option is described below.
Menu Description
Easy control Brightness
Adjusts the color contrast and brightness of the screen.
Contrast
Volume Adjusts the volume level.
y
You can adjust Mute/ Unmute by moving the joystick button to ▼ in the Volume
menu.
NOTE
Input Selects the input mode.
Ratio Adjusts the aspect ratio of the screen.
Function Adjusts MaxxAudio, Picture Mode, Dual Color Space, and SUPER ENERGY SAVING.
PBP PBP Displays the screens of two input modes on one monitor.
Screen Picture Adjusts the Sharpness, Black level, and Response Time of the screen.
Color Adjusts Gamma, Color Temperature, Red, Green, Blue, and Six Color.
Settings Adjusts Language, Power LED, Automatic Standby, DisplayPort 1.2, DisplayPort EQ,
and OSD Lock.
Reset Restores the default settings.
◄ Exit Exits the OSD menu.
y
Your monitor’s OSD (On Screen Display) may differ slightly from that shown in this manual.
CAUTION
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22
USER SETTINGS
Ratio
1
To view the OSD menu, press the joystick button at the
bottom of the monitor and then enter the Menu.
2
Go to Easy control > Ratio 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 > Easy control > Ratio Description
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.
1:1 The aspect ratio is not adjusted from the original.
y
The display may look the same for Wide, Original, and 1:1 options at the recommended resolution.
-
Recommended resolution for mDP (Mini DisplayPort), DP (DisplayPort), and Thunderbolt(
)
4096 x 2160
-
Recommended resolution for HDMI 3840 x 2160
y
The ratio is disabled in the interlaced signal.
NOTE
Easy control
Easy control
Brightness
100
>
Contrast 70
>
Function
Volume
30
>
Input HDMI1
>
PBP
Ratio Wide
>
Screen
Settings
Reset
▲/▼: Move
/ ►: OK
◄: Back
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23
USER SETTINGS
Function
1
To view the OSD menu, press the joystick button at the
bottom of the monitor and then enter the Menu.
2
Go to Function 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 > Function Description
MaxxAudio MaxxAudio On
MaxxAudio
®
by Waves, recipient of a Technical GRAMMY
Award
®
is a suite of studio-quality sound tools for a superior
listening experience.
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 Lets you enjoy rich and full sound at a low volume.
Function
Easy control
MaxxAudio
>
Picture Mode Custom
>
Function
Dual Color Space Off
>
SUPER ENERGY SAVING Low
>
PBP
Screen
Settings
Reset
▲/▼: Move
/ ►: OK
◄: Back
ENGLISH
24
USER SETTINGS
Menu > Function Description
Picture Mode Custom Allows the user to adjust each element. The color mode of the main menu
can be adjusted.
sRGB A standard RGB color space for the monitor and printer.
AdobeRGB A much larger color space than sRGB. This option is suitable for printing
pictures.
DCM Sim. Optimizes the screen for viewing X-ray images. You can brighten the screen
in the OSD menu.
NOTE
y
This product has been approved as an IT device and not as a
medical device. It is intended for office use only. (It may be used for
education and reference purposes but not for medical diagnosis.)
DCI-P3 Sim. Suitable for watching digital videos.
Reader Optimizes the screen for viewing documents.You can brighten the screen in
the OSD menu.
Calibration 1 Adjusts to the last calibrated screen.
Calibration 2 Adjusts to the previously calibrated screen.
Dual Color Space Off Disables the Dual Color Space function.
sRGB Sets the sRGB Picture Mode on the left of the screen.
AdobeRGB Sets the Adobe Picture Mode on the left of the screen.
DCI-P3 Sim.
Sets the DCI-P3 Sim. Picture Mode on the left of the screen.
Calibration 1 Sets the Calibration 1 Picture Mode on the left of the screen.
Calibration 2 Sets the Calibration 2 Picture Mode on the left of the screen.
SUPER ENERGY
SAVING
Conserve energy by using luminance compensation algorithm
High Saves energy using the high-efficiency SUPER ENERGY SAVING feature.
Low Saves energy using the low-efficiency SUPER ENERGY SAVING feature.
Off Disables the SUPER ENERGY SAVING feature.
NOTE
y
Saving Data depends on the Panel. These values vary by panel and vendor. If option of SUPER
ENERGY SAVING is High or Low, monitor luminance become higher or lower depend upon source.
ENGLISH
25
USER SETTINGS
PBP
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.
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
PBP Displays the screens of two input modes on one monitor.
PBP Connection
Sub Screen (Right)
HDMI 1 HDMI 2
(Mini)
DisplayPort
Thunderbolt( )
(31MU97Z model
only)
Main
Screen
(Left)
HDMI 1
- O X X
HDMI 2
O - X X
(Mini) DisplayPort
O O - X
Thunderbolt( )
(31MU97Z model only)
O O X -
Input Main Selects the video signal input of the main screen.
Sub Selects the video signal input of the sub screen.
Audio Changes the audio output in PBP mode.
Swap Toggles between the main screen and sub screen in PBP mode.
Sub Full Converts the sub screen in PBP mode to wide screen.
PBP
Easy control
PBP Off
>
Input
>
Function
Audio HDMI1
>
Swap
PBP
Sub Full
Ratio
>
Screen
Settings
Reset
PBP Preview
HDMI1
▲/▼: Move
/ ►: OK
◄: Back
ENGLISH
26
USER SETTINGS
Menu > PBP Description
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 signal input.
Original Displays the video in the aspect ratio of the video signal
input on the PBP screen.
Sub Wide Displays the video to fit the PBP screen, regardless of
the video signal input.
Original Displays the video in the aspect ratio of the video signal
input on the PBP screen.
y
When the PBP mode is Off, Input, Audio, Swap, Sub Full, and Ratio menus become disabled. The
Main/Sub options for Ratio become disabled if there is no signal.
y
The optimal resolution for PBP mode is set automatically when PBP mode is set.
NOTE
ENGLISH
27
USER SETTINGS
Picture
1
To view the OSD menu, press the joystick button at the
bottom of the monitor and then enter the Menu.
2
Go to Screen > 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 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 > Screen > Picture Description
SUPER RESOLUTION+ With the picture improvement technology that minimizes the degradation of the picture
quality due to enlargement (e.g. blurred focus or unsharpened edges), the resolution is not
compromised, even when the images are enlarged, which guarantees a clear image.
NOTE
y
Because this is a function to increase the sharpness of low resolution pictures, it
is not recommended to use the function for normal text or for desktop icons.
Doing so may result in unnecessarily high sharpness.
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 The picture of the screen gets brighter.
Low The picture of the screen gets darker.
DFC Adjusts the brightness automatically according to the screen.
Picture
Easy control
SUPER RESOLUTION+ Off
>
Sharpness 5
>
Function
Black Level High
>
DFC On
>
PBP
Uniformity Off
>
Response Time Middle
>
Screen
Settings
Reset
▲/▼: Move
/ ►: OK
◄: Back
ENGLISH
28
USER SETTINGS
Menu > Screen > Picture Description
Uniformity Adjusts uniformity of the image.
NOTE
y
The Uniformity menu is activated only in Custom, sRGB, and Adobe RGB modes.
Enabling Uniformity may reduce the overall brightness of the image.
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.
ENGLISH
29
USER SETTINGS
Color
1
To view the OSD menu, press the joystick button at the
bottom of the monitor and then enter the Menu.
2
Go to Screen > Color 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 > Screen > Color Description
Gamma Gamma settings: When using 2.0, 2.2, 2.4 and 2.6 monitor settings, higher gamma settings
mean a brighter image is displayed and vice versa.
Color Temp Manual Adjusts the color temperature in 500K increments.
(Note that 9300K is supported instead of 9500K.)
Custom The user can adjust it to red, green, or blue by customization.
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 satu-
rated and brighter the colors become. The higher the value, the more saturated
and darker the colors become.
Reset Returns color to the default settings.
Color
Easy control
Gamma 2.2
>
Color Temp 6500
>
Function
Red
50
>
Green 50
>
PBP
Blue
50
>
Six Color
>
Screen
Reset
>
Settings
Reset
▲/▼: Move
/ ►: OK
◄: Back
ENGLISH
30
USER SETTINGS
Settings
1
To view the OSD menu, press the joystick button at the
bottom of the monitor and then enter the Menu.
2
Go to 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 > Settings Description
Language Sets the menu screen to the desired language.
Power LED Turns the power LED on the front of the monitor on or off.
On The power LED turns on automatically.
Off The power LED turns off.
Automatic
Standby
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 hours, 6 hours, and 8 hours)
DisplayPort 1.2 Enables or disables DisplayPort 1.2.
y
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.
NOTE
DisplayPort EQ Enables or disables DisplayPort EQ.
y
Depending on the graphics card, enable this feature if any screen or audio noise occurs.
For some graphics cards, high-resolution output may not be available.
NOTE
Settings
Easy control
Language English
>
Power LED On
>
Function
Automatic Standby Off
>
DisplayPort 1.2 Enable
>
PBP
DisplayPort EQ Disable
>
OSD Lock Off
>
Screen
Settings
Reset
▲/▼: Move
/ ►: OK
◄: Back
ENGLISH
31
USER SETTINGS
Menu > Settings Description
OSD Lock Prevents incorrect key input.
On Disables key input
Off Enables key input
y
All features are disabled except Brightness, Volume, Input, OSD Lock in Settings, and the
Exit button.
NOTE
ENGLISH
32
USER SETTINGS
Reset
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.
Reset
Easy control
Do you want to reset your settings?
Reset
Function
Cancel
PBP
Screen
Settings
Reset
▲/▼:Move
/►:OK
◄:Back
ENGLISH
33
TROUBLESHOOTING
TROUBLESHOOTING
Nothing is displayed on the screen.
Is the monitor's power cord
plugged in?
y
Check if the power cord is correctly plugged into the power outlet.
Is the power LED on?
y
Check the power cable connection and press the power button.
Is the power on and the power
LED displaying white?
y
Check that the connected input is enabled (Menu - Input).
Is the power LED blinking?
y
If the monitor is in sleep mode, move the mouse, or press any key
on the keyboard, to switch the display on.
y
Check if the computer is turned on.
Is the OUT OF RANGE mes-
sage being displayed?
y
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.
Is the No Signal message be-
ing displayed?
y
This is displayed when the signal cable between the PC and the
monitor is missing or disconnected. Check the cable and reconnect
it.
The OSD Lock message is being displayed.
Are some functions not avail-
able when you press the Menu
button?
y
The OSD is locked. Go to Menu > Settings and set OSD Lock to
Off.
The screen retains an image.
Does image sticking occur even
when the monitor is turned off?
y
Displaying a still image for a prolonged time may cause damage to
the screen, resulting in the retention of the image.
y
To extend the lifetime of the monitor, use a screensaver.
Screen display is unstable and shaky / Images displayed on the monitor leave shadow trails.
Did you select the appropriate
resolution?
y
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.
y
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.
y
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.
NOTE
ENGLISH
34
TROUBLESHOOTING
y
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 in Control Panel > Display > Settings.
y
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.
y
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.
y
Some graphics cards may not support 4096 x 2160 / 3840 x 2160 resolution. If the resolution cannot be
displayed, contact the manufacturer of your graphics card.
NOTE
The display color is abnormal.
Does the display appear discol-
ored (16 colors)?
y
Set the color to 24 bit (true color) or higher. In Windows, go to Con-
trol Panel > Display > Settings > Color Quality.
Does the display color appear
unstable or monochrome?
y
Check if the signal cable is connected properly. Reconnect the cable
or reinsert the PC's graphics card.
Are there spots on the screen?
y
When using the monitor, pixilated spots (red, green, blue, white
,
or
black) may appear on the screen. This is normal for an LCD screen.
It is not an error, nor is it related to the monitor's performance.
No sound from the headphone port.
Are images displayed using
(Mini) DisplayPort or HDMI input
without sound?
y
Make sure that the headphone port connections are made properly.
y
Try increasing the volume with the joystick.
y
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.
ENGLISH
35
PRODUCT SPECIFICATION
PRODUCT SPECIFICATION
31MU97
31MU97C
LCD Screen Type TFT (Thin Film Transistor)
LCD (Liquid Crystal Display) Screen
Pixel Pitch 0.1701 mm x 0.1701mm
Resolution HDMI Max Resolution 4096 x 2160 @ 24 Hz
Recommended Resolution 3840 x 2160 @ 30 Hz
(Mini) DisplayPort Max Resolution 4096 x 2160 @ 60 Hz
Recommended
Resolution
Win 4096 x 2160 @ 60 Hz
Mac 4096 x 2160 @ 50 Hz
Video Signal
Horizontal Frequency 30 kHz to 135 kHz
Vertical Frequency 56 Hz to 61 Hz
Input Connector
H/P OUT, HDMI IN 1, HDMI IN 2, mDP (Mini DisplayPort) IN, DP (DisplayPort) IN,
USB UP, USB IN 1, 2, 3
Power Sources Power Rating AC 100-240 V~ 50 / 60 Hz, 1.4 A
Power Consumption
(Typical)
Operating Mode: 49 W (Typical, USB excluded, Audio Output
20%) (Outgoing condition)
Sleep Mode ≤ 1.2 W
Off Mode Power Button ≤ 0.5 W
Switch 0 W
Stand Angle Forward/Backward: -5° to 15° (Head)
Environmental
Conditions
Operating Conditions Temperature 0 °C to 40 °C (32 °F to 104 °F)
Humidity Less than 80 %
Storing Conditions Temperature -20 °C to 60 °C (-4 °F to 140 °F)
Humidity Less than 85 %
Audio Output 5 W + 5 W
Dimensions Monitor Size (Width x Height x Depth)
With Stand 736.7 mm x 483.5 mm x 241.4 mm
(29.0 inches x 19.0 inches x 9.5 inches)
Without Stand 736.7 mm x 407.5 mm x 52.4 mm
(29.0 inches x 16.0 inches x 2.0 inches)
Weight (Without
Packaging)
With Stand 9.6 kg (21.1 Ibs)
Without Stand 7.7 kg (16.9 Ibs)
Specifications are subject to change without notice.
ENGLISH
36
PRODUCT SPECIFICATION
31MU97Z
LCD Screen Type TFT (Thin Film Transistor)
LCD (Liquid Crystal Display) Screen
Pixel Pitch 0.1701 mm x 0.1701mm
Resolution HDMI Max Resolution 4096 x 2160 @ 24 Hz
Recommended Resolution 3840 x 2160 @ 30 Hz
(Mini) DisplayPort Max Resolution 4096 x 2160 @ 60 Hz
Recommended
Resolution
Win 4096 x 2160 @ 60 Hz
Mac 4096 x 2160 @ 50 Hz
Thunderbolt ( )
Max Resolution 4096 x 2160 @ 50 Hz
Recommended
Resolution
Win 4096 x 2160 @ 60 Hz
Mac
4096 x 2160 @ 50 Hz
Video Signal Horizontal Frequency 30 kHz to 135 kHz
Vertical Frequency 56 Hz to 61 Hz
Input Connector H/P OUT, HDMI IN 1, HDMI IN 2, mDP (Mini DisplayPort) IN, DP (DisplayPort) IN,
Thunderbolt ( ), USB UP, USB IN 1, 2, 3
Power Sources Power Rating AC 100-240 V~ 50 / 60 Hz, 1.7 A
Power Consumption
(Typical)
Operating Mode: 73 W (Typical, USB excluded, Audio Output
20%) (Outgoing condition)
Sleep Mode ≤ 1.2 W
Off Mode Power Button ≤ 0.5 W
Switch 0 W
Stand Angle Forward/Backward: -5° to 15° (Head)
Environmental
Conditions
Operating Conditions Temperature 0 °C to 40 °C (32 °F to 104 °F)
Humidity Less than 80 %
Storing Conditions Temperature -20 °C to 60 °C (-4 °F to 140 °F)
Humidity Less than 85 %
Audio Output 5 W + 5 W
Dimensions Monitor Size (Width x Height x Depth)
With Stand 736.7 mm x 483.5 mm x 241.4 mm
(29.0 inches x 19.0 inches x 9.5 inches)
Without Stand 736.7 mm x 407.5 mm x 52.4 mm
(29.0 inches x 16.0 inches x 2.0 inches)
Weight (Without
Packaging)
With Stand 9.6 kg (21.1 Ibs)
Without Stand 7.7 kg (16.9 Ibs)
Specifications are subject to change without notice.
ENGLISH
37
PRODUCT SPECIFICATION
Factory Support Mode
31MU97
31MU97C
(Preset Mode, HDMI/ (Mini) DisplayPort PC)
31MU97Z
(Preset Mode, HDMI/ (Mini) DisplayPort/ Thunderbolt PC)
Preset Mode
Horizontal Frequency
(kHz)
Vertical Frequency
(Hz)
Polarity (H/V) Remarks
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 +/+
1920 x 1080 67.5 60 +/-
2048 x 2160 133.32 60 +/-
Recommended resolution
for PBP
2560 x 1440 88.79 59.95 +/-
(Mini) DIsplayPort, Thunder-
bolt is not supported.
3840 x 2160 133.32 60 +/- HDMI is not supported.
3840 x 2160 67.5 30 +/-
4096 x 2160 133.32 60 +/-
HDMI, Thunderbolt is not
supported. (Mac OS)
4096 x 2160 54 24 +/-
(Mini) DIsplayPort, Thunder-
bolt is not supported.
4096 x 2160 111.10 50 +/- HDMI is not supported.
HDMI Timing (Video)
Preset Mode
Horizontal Frequency
(kHz)
Vertical Frequency
(Hz)
Remarks
480p 31.5 60
720p 45 60 31MU97Z model only
1080p 67.5 60 31MU97Z model only
Power LED
Mode LED Color
On Mode White
Sleep Mode Flashing White
Off Mode Off
ENGLISH
38
PROPER POSTURE
PROPER POSTURE
Proper Posture for Using the Monitor
Adjust the screen so that you can comfortably look at it at a slight downward angle from your natural eye
level.
y
Take a break for approximately 10 minutes every hour to reduce any fatigue caused by prolonged
usage.
y
Adjust the stand angle from -5° to 15° to obtain the best view of the screen.
You should be looking
slightly down at the
screen.
Place your hands gently
on the keyboard,
keeping your arms bent at
the elbows and extended
horizontally in front of you.
Stand Angle
-5° to 15°
Adjust the position of
the screen to mini-
mize reflections.
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: 31MU97, 31MU97C, 31MU97Z
Responsible Party: LG Electronics Inc.
Address: 1000 Sylvan Ave.
Englewood Cliffs NJ 07632
U.S.A
TEL: 201-266-2534
ENERGY STAR is a set of power-saving
guidelines issued by the U.S.Environmental
Protection Agency (EPA).
Refer to ENERGY STAR.gov for more information
on the ENERGY STAR program.
As an ENERGY STAR Partner LGE
U. S. A., Inc. has determined that this
product meets the ENERGY STAR
guidelines for energy efficiency.
