Iiyama ProLite T2451MTS User manual

ENGLISH
USER MANUAL
Thank you very much for choosing the
iiyama LCD monitor.
We recommend that you take a few
minutes to read carefully through this
brief but comprehensive manual before
installing and switching on the monitor.
Please keep this manual in a safe
place for your future reference.

ENGLISH
CE MARKING DECLARATION OF CONFORMITY
This LCD monitor complies with the requirements of the EC Directive 2004/108/EC “EMC
Directive” , 2006/95/EC “Low Voltage Directive” and 2009/125/EC “ErP Directive”.
The electro-magnetic susceptibility has been chosen at a level that gives correct operation in
residential areas, business and light industrial premises and small-scale enterprises, inside as
well as outside of the buildings. All places of operation are characterised by their connection to
the public low voltage power supply system.
IIYAMA CORPORATION: Breguetlaan 8, 1438BC Oude Meer The Netherlands
We reserve the right to change specifications without notice.
All trademarks used in this user manual are the property of their respective owners.
As an ENERGY STAR® Partner, iiyama has determined that this product meets the ENERGY STAR® guidelines
for energy efficiency.
We recommend recycling of used product. Please contact your dealer or iiyama
service center. Recycle information is obtained via the Internet, using the address:
http://www.iiyama.com
You can access the Web page of different countries from there.

ENGLISH
TABLE OF CONTENTS
FOR YOUR SAFETY..........................................................................1
SAFETY PRECAUTIONS..............................................................1
SPECIAL NOTES ON LCD MONITORS.......................................3
CUSTOMER SERVICE .................................................................3
CLEANING....................................................................................3
BEFORE YOU OPERATE THE MONITOR........................................4
FEATURES....................................................................................4
CHEKING THE CONTENTS OF THE PACKAGE.........................4
CONTROLS AND CONNECTORS................................................5
CONNECTING YOUR MONITOR ................................................6
COMPUTER SETTING .................................................................7
ADJUSTING THE VIEWING ANGLE ............................................8
OPERATING THE MONITOR.............................................................9
ADJUSTMENT MENU CONTENTS............................................10
SCREEN ADJUSTMENTS..........................................................16
POWER MANAGEMENT FEATURE...........................................19
TROUBLE SHOOTING ....................................................................20
RECYCLING INFORMATION...........................................................21
APPENDIX ......................................................................................22
SPECIFICATIONS.......................................................................22
DIMENSIONS..............................................................................23
COMPLIANT TIMING..................................................................23

ENGLISH
FOR YOUR SAFETY 1
FOR YOUR SAFETY
WARNING
STOP OPERATING THE MONITOR IF YOU ARE AWARE OF ANY PROBLEMS
If you notice any abnormal phenomena such as smoke, strange sounds or fumes, unplug the monitor
and contact your dealer or iiyama service center immediately. Further use may be dangerous and can
cause fire or electric shock.
NEVER REMOVE THE CABINET
High voltage circuits are inside the monitor. Removing the cabinet may expose you to the danger of fire
or electric shock.
DO NOT PUT ANY OBJECT INTO THE MONITOR
Do not put any solid objects or liquids such as water into the monitor. In case of an accident, unplug
your monitor immediately and contact your dealer or iiyama service center. Using the monitor with any
object inside may cause fire, electric shock or damage.
INSTALL THE MONITOR ON A FLAT, STABLE SURFACE
The monitor may cause an injury if it falls or is dropped.
DO NOT USE THE MONITOR NEAR WATER
Do not use where water may be splashed or spilt onto the monitor as it may cause fire or electric
shock.
OPERATE UNDER THE SPECIFIED POWER SUPPLY
Be sure to operate the monitor only with the specified power supply. Use of an incorrect voltage will
cause malfunction and may cause fire or electric shock.
PROTECT THE CABLES
Do not pull or bend the power cable and signal cable. Do not place the monitor or any other heavy
objects on the cables. If damaged, the cables may cause fire or electric shock.
ADVERSE WEATHER CONDITIONS
It is advisable not to operate the monitor during a heavy thunder storm as the continual breaks in
power may cause malfunction. It is also advised not to touch the plug in these circumstances as it may
cause electric shock.
SAFETY PRECAUTIONS

ENGLISH
2 FOR YOUR SAFETY
CAUTION
INSTALLATION LOCATION
Do not install the monitor where sudden temperature changes may occur, or in humid, dusty or smoky
areas as it may cause fire, electric shock or damage. You should also avoid areas where the sun
shines directly on the monitor.
DO NOT PLACE THE MONITOR IN A HAZARDOUS POSITION
The monitor may topple and cause injury if not suitably located. Please also ensure that you do not
place any heavy objects on the monitor, and that all cables are routed such that children may not pull
the cables and possibly cause injury.
MAINTAIN GOOD VENTILATION
Ventilation slots are provided to keep the monitor from overheating. Covering the slots may cause fire.
To allow adequate air circulation, place the monitor at least 10 cm (or 4 inches) from any walls.
Do not remove the tilt stand when operating the monitor. Ventilation slots on the back of the cabinet
will be blocked and the monitor may overheat if the stand is removed. This may cause fire or damage.
Operating the monitor on its back, side, upside down or on a carpet or any other soft material may also
cause damage.
DISCONNECT THE CABLES WHEN YOU MOVE THE MONITOR
When you move the monitor, turn off the power switch, unplug the monitor and be sure the signal cable
is disconnected. If you do not disconnect them, it may cause fire or electric shock.
UNPLUG THE MONITOR
If the monitor is not in use for a long period of time it is recommended that it is left unplugged to avoid
accidents.
HOLD THE PLUG WHEN DISCONNECTING
To disconnect the power cable or signal cable, always pull it by the plug. Never pull on the cable itself
as this may cause fire or electric shock.
DO NOT TOUCH THE PLUG WITH WET HANDS
Pulling or inserting the plug with wet hands may cause electric shock.
WHEN YOU INSTALL THE MONITOR ON YOUR COMPUTER
Be sure the computer is strong enough to hold the weight of the monitor, otherwise, you may damage
your computer.
DO NOT USE THE MONITOR FOR 24-HOURS CONTINUOUSLY
The monitor is not designed to work for 24-hours continuously, do not use the monitor for 24-hours
continuously.
OTHERS
ERGONOMIC RECOMMENDATIONS
To eliminate eye fatigue, do not operate the monitor against a bright background or in a dark room.
For optimal viewing comfort, the monitor should be just below eye level and 40-60 cm (16-24 inches)
away from your eyes. When using the monitor over a prolonged time, a ten minute break every hour is
recommended as looking at the screen continuously can cause eye strain.

ENGLISH
FOR YOUR SAFETY 3
The following symptoms are normal with LCD monitors and do not indicate a problem.
NOTE 
When you first turn on the LCD monitor, the picture may not fit in the display area because
of the type of computer that is used. In this case, adjust the picture position to the correct
position.

Due to the nature of the backlight, the screen may flicker during initial use. Turn off the
Power Switch and then turn it on again to make sure the flicker disappears.

You may find slightly uneven brightness on the screen depending on the desktop pattern
you use.

Due to the nature of the LCD screen, an afterimage of the previous screen may remain
after switching the image, when the same image is displayed for hours. In this case, the
screen can be recovered slowly by changing the image or turning off the Power Switch for
some hours.

Contact your dealer or iiyama service center for the backlight replacement when the
screen is dark, flickering or not lighting up. Never attempt to replace it by yourself.
SPECIAL NOTES ON LCD MONITORS

If you have to return your unit for service and the original packaging has been discarded,
please contact your dealer or iiyama service center for advice or replacement packaging.
WARNING 
If you drop any materials or liquids such as water into the monitor when cleaning,
unplug the power cable immediately and contact your dealer or iiyama service center.
CAUTION 
For safety reasons, turn off the power switch and unplug the monitor before you clean
it.

To protect the LCD panel, do not scratch or rub the screen with a hard object.

Never use any of the following strong solvents. These will damage the cabinet and
the LCD screen.

Touching the cabinet with any product made from rubber or plastic for a long time
may cause degeneration or loss of paint on the cabinet.
Thinner
Benzine
Abrasive cleaner
Spray-type cleaner
Wax
Acid or Alkaline solvent
CABINET Stains can be removed with a cloth lightly moistened with a mild detergent solvent. Then
wipe the cabinet with a soft dry cloth.
LCD
SCREEN
Periodic cleaning with a soft dry cloth is recommended.
Don't use tissue paper etc. because these will damage the LCD screen.
CUSTOMER SERVICE
CLEANING
NOTE
NOTE

ENGLISH
4 BEFORE YOU OPERATE THE MONITOR
The following accessories are included in your package. Check to see if they are enclosed with the
monitor. If anything is missing or damaged, please contact your local iiyama dealer or regional iiyama
office.
BEFORE YOU OPERATE THE MONITOR
CHEKING THE CONTENTS OF THE PACKAGE
FEATURES
Supports Resolutions up to 1920 × 1080
High Contrast 1000:1 (Typical), ACR Function Available / Brightness 260cd/m2
(Typical), Quick Response Time 5ms (Typical)
Digital Character Smoothing
Automatic Set-up
Stereo Speakers
2 × 2W Stereo Speakers

Plug & Play VESA DDC2B Compliant
Windows®95/98/2000/Me/XP/Vista/7 Compliant
Power Management (ENERGY STAR®VESA DPMS Compliant)
VESA Mounting Standard (100mm×100mm) Compliant
Keyhole for Security Lock
*The rating of the Power Cable enclosed in 120V area is 10A/125V. If you are using
a power supply higher than this rating, then a power cable with a rating of 10A/250V
must be used. However, all guarantees and warranties are void for any
problems or damage caused by a power cable not supplied by iiyama.

Power Cable* D-Sub Signal Cable  DVI-D Signal Cable

USB Cable  Audio Cable  Touch Pen (Stored in the Cabinet)

Safety Guide  Quick Start Guide
CAUTION

ENGLISH
BEFORE YOU OPERATE THE MONITOR 5
CONTROLS AND CONNECTORS
Power Switch ( )
Power Indicator
Blue: Normal operation
Orange: Power Management
Select / Input select Button ( )
Scroll up / AudioAdjust Button ( )
Scroll down / i-Style Color Button ( )
Menu Button ( )
Touch Pen
Speakers
Headphone Connector (EARPHONE)
HDMI Connector (HDMI2)
HDMI Connector (HDMI1)
DVI-D 24pin Connector (DVI)
Keyhole for Security Lock
You can fasten a security lock and cable to prevent the monitor from being removed
without your permission.
D-SUB mini 15pin Connector (VGA)
Audio Connector (AUDIO IN)
USB Connector (PC USB)
AC Connector (AC POWER IN)
Main Power Switch (POWER SWITCH)
<Front> <Back>
NOTE
NOTE

ENGLISH
6 BEFORE YOU OPERATE THE MONITOR
CONNECTING YOUR MONITOR
Ensure that both the computer and the monitor are switched off.
Connect the computer to the monitor with the signal cable.
Connect the computer to the monitor with the USB Cable.
Connect the monitor to the audio equipment with the Audio Cable for computer when using the
audio features.
Connect the Power Cable to the monitor first and then to the power supply.
Turn on your monitor (Main Power Switch and Power Switch)and computer.
[Example of Connection]
<Back>
HDMI Cable
(Not included)
Power Cable
(Accessory)
Audio Cable (Accessory)
Computer
D-Sub Signal Cable (Accessory)
DVI-D Signal Cable (Accessory)
AV Equipment etc.
GAME
Equipment
etc.
HDMI Cable
(Not included)
USB Cable (Accessory)
NOTE The signal cables used for connecting the computer and monitor may vary with the type of
computer used. An incorrect connection may cause serious damage to both the monitor and
the computer. The cable supplied with the monitor is for a standard 15 pin D-Sub connector.
If a special cable is required please contact your local iiyama dealer or regional iiyama
office.
For connection to Macintosh computers, contact your local iiyama dealer or regional
iiyama office for a suitable adaptor.
Make sure you tighten the finger screws at each end of the signal cable.

ENGLISH
BEFORE YOU OPERATE THE MONITOR 7
Signal Timing
Change to the desired signal timing listed on page 23: COMPLIANT TIMING.
Windows 95/98/2000/Me/XP/Vista/7 Plug & Play
The iiyama LCD monitor complies with DDC2B of VESA standard. The Plug & Play function runs on
Windows 95/98/2000/Me/XP/Vista/7 by connecting the monitor to DDC2B compliant computer with
the Signal Cable supplied.
For installation on Windows 95/98/2000/Me/XP: The monitor Information File for iiyama monitors
may be necessary for your computer and obtained via the Internet, using the address:
http://www.iiyama.com

For additional information on how to download the driver for your touch screen monitor,
please access the internet site noted above.

Monitor Drivers are not required in most cases for Macintosh or Unix operating systems.
For further information, please contact your computer dealer first for advice.
COMPUTER SETTING
NOTE

ENGLISH
8 BEFORE YOU OPERATE THE MONITOR
For optimal viewing it is recommended to look at the full face of
the monitor.
When changing the monitors angle, ensure the cabinet is
secure when moving the stand thus avoiding any accidents.
You are able to adjust the monitor’s angle up to 5 - 37 degrees
upward.
NOTE Do not touch the LCD screen when you change
the angle. It may cause damage or break the LCD
screen.
Careful attention is required not to catch your fingers
or hands when you change the angle.
When packaged, the stand is folded. Do not use in
this state otherwise injury may occur if it falls or is
dropped.
ADJUSTING THE VIEWING ANGLE
5°
37°

ENGLISH
OPERATING THE MONITOR 9
OPERATING THE MONITOR
To create the best picture, your iiyama LCD monitor has been preset at the factory with the COMPLIANT
TIMING shown on page 23. You are also able to adjust the picture by following the button operation
shown below. For more detailed adjustments, see page 16 for SCREEN ADJUSTMENTS.
Press the Button to start the On Screen Display (OSD) feature. There are
additional Menu items which can be switched by using the / Buttons.
BSelect the Menu item which contains the adjustment icon relating to the adjustment
you want to make. Press the Button. Then, use the / Buttons to highlight the
desired adjustment icon.
CPress the Button again. Use the / Buttons to make the appropriate
adjustment or setting.
DPress the Button to leave the menu, and the settings you just made would be
automatically saved.

When button operations are aborted during adjustment, On-Screen Display disappears
when the time set for the OSD Time Out has passed. Also, the button can be used to
return previous menu and turn off the On-Screen Display.

Any changes are automatically saved in the memory when the On Screen Display
disappears. Turning off the power should be avoided while using the Menu.

Adjustments for H./V. Position, Clock and Phase are saved for each signal timing. Except for
these adjustments, all other adjustments have only one setting which applies to all signal timings.
For example, to correct for vertical position, select Menu item of Manual Image Adjust and then
press the Button. Then, select (H./V.Position) by using the / Buttons.
An adjustment page appears after you press the Button. Then, select V. Position by using the
/ Buttons. Press the Button again. Then, use the / Buttons to change the vertical
position settings. The vertical position of the overall display should be changing accordingly while
you are doing this.
Press the Button lastly, it ends, all changes are saved in the memory.
NOTE
Main Menu
Auto Image Adjust
Contrast/Brightness
Input Select
Audio Adjust
Color Adjust
Information
Manual Image Adjust
Setup Menu
Memory Recall
Exit Select
Main Menu
Auto Image Adjust
Contrast/Brightness
Input Select
Audio Adjust
Color Adjust
Information
Manual Image Adjust
Setup Menu
Memory Recall
Exit Select Exit Select
Manual Image Adjust
Horizontal Size
H./V. Position
Fine Tune
Sharpness
Video Mode Adjust
H./V. Position
Exit Select
H. Position
V. Posit i o n

ENGLISH
10 OPERATING THE MONITOR
ADJUSTMENT MENU CONTENTS
Too dark
Too bright
Brightness *1,2,3
Too dull
Too intense
*1 Adjust the Brightness when you are using the monitor in a dark room and feel the screen is too
bright. Can not select when ACR is On.
*2Brightness and ACR can not enable the same time when ECO Mode is on.
*3Contrast, Brightness, ACR and ECO Mode adjustments are disabled when i-Style Color is activated.
Brightness of back-light is reduced.
Off Normal
ECO Mode *3
ACR *2,3
Increased Contrast RatioOn
Off Typical Contrast Ratio
Adjustment Item Problem / Option Button to Press
Auto Image Adjust Auto Image Adjust
Auto Image Adjust * Adjust H. / V. Position, Clock and Phase automatically.
* For best results, use the Auto Image Adjust in conjunction with the adjustment pattern. See page 16
for SCREEN ADJUSTMENTS.
Only Analog Input
You can skip the Menu items and display an adjustment scale directly by using the following button
operations.

Auto Image Adjust: Pressing and holding of the Button for about 2 seconds when the Menu is
not displayed.
Direct
Direct
Adjustment Item Problem / Option Button to Press
Contrast/Brightness Contrast/Brightness
Contrast *3
1Brightness of back-light is reduced more than 1.2 Brightness of back-light is reduced more than 2.3
OD
Off/1/2/3/4/5
It will improve the gray level response time of the
LCD panel.
A higher level results in a faster response time.

ENGLISH
OPERATING THE MONITOR 11
Adjustment Item Problem / Option Button to Press
Input Select Input Select
Input Select
You can skip the Menu items and display an adjustment scale directly by using the following button
operations.

Input Select: Press the Button when the Menu is not displayed.
Direct
Direct
Input source is fixed, not selected automatically when VGA, DVI, HDMI1 and HDMI2 which
are selected.
Select the VGA input.
Select the DVI input.
VGA
DVI
Auto
Search for an available input source and select
automatically.
Select the HDMI1 input.HDMI1
NOTE
Select the HDMI2 input.HDMI2
Volume Too soft
Too loud
Adjustment Item Problem / Option Button to Press
Audio Adjust Audio Adjust
Mute
You can skip the Menu items and display an adjustment scale directly by using the following button
operations.

Audio Adjust: Press the Button when the Menu is not displayed.

Mute: Pressing and holding of the Button for about 2 seconds when the Menu is not
displayed.
and are switched as follows by pressing the Button successively.
Direct
Direct
Return the sound volume to the previous level.
Turn off the sound temporarily.
Select the Line-In input.Line-In
Select the HDMI input.HDMI
HDMI Audio *
* Suitable for HDMI input only.

ENGLISH
12 OPERATING THE MONITOR
Too weak
Too strong
Adjustment Item Problem / Option Button to Press
Color Adjust Color Adjust
User Color
You can skip the Menu items and display an adjustment scale directly by using the following button
operations.

i-Style Color: Press the Button when the Menu is not displayed.
Direct
Direct
Bluish white
Red
Green
Blue
Cool Reddish whiteNormal Greenish whiteWarm
i-Style Color
Standard For general windows environment and monitor
default setting.
Text For text editing and viewing in a word processing
environment.
Game For PC game environment.
Cinema For movie and video environment.
Scenery For displaying outdoor scenery images
Information Information
Information
H.Frequency:
V.Frequency:
Resolution:
Pixel Clock:
Model Number:
67.56KHz
60.0Hz
1920 x 1080
148.5MHz
PL2451MT
Exit
See your graphic card user guide for more information
about changing the resolution and refresh.
Displays information regarding the current input signal coming
from the graphic card in your computer.
NOTE

ENGLISH
OPERATING THE MONITOR 13
Too left
Too right
Too low
Too high
Too narrow
Too wide
To correct flickering text or lines
*1Only Analog Input.
*2See page 16 for SCREEN ADJUSTMENTS.
*3It can display in the center of the screen with a 4:3, 5:4 or 16:10 aspect ratio when input video
resolution is 4:3, 5:4 or 16:10.
Expansion display
Full Screen
Over Screen Expansion display of Aspect
Adjustment Item Problem / Option Button to Press
Manual Image Adjust Manual Image Adjust
Clock *1
H./V. Position *1,2
H. Position
V. Position
Phase *1
Adjust the picture quality at resolutions of less
1920 x 1080.
You can change the picture quality (3 steps).
Sharpness
Aspect Ratio *3
Video Mode Adjust Full screen display

ENGLISH
14 OPERATING THE MONITOR
Memory Recall Factory-preset data is restored.
English
Deutsch
English
German
Français French Japanese
Finnish
Italiano Italian Traditional Chinese
Simplified Chinese
Español Spanish
Suomi
H.Position OSD is too left
OSD is too right
OSD is too low
OSD is too high
You can set the OSD display duration time
between 5 and 60 seconds.
V.Position
Adjustment Item Problem / Option Button to Press
Setup Menu Setup Menu
Language Select
OSD Position
OSD Time Out
OSD Background
LED
Retune the background of OSD.
Off The background of OSD is mode transparent.
On
The Power Indicator is turned On.
Off The Power Indicator is turned Off.
On
Turn Off the Power Indicator when you are bothered by the light.
NOTE
Adjustment Item Problem / Option Button to Press
Memory Recall Memory Recall

ENGLISH
OPERATING THE MONITOR 15
●Lock Mode
<OSD Menu>
1. The OSD lock will be activated by pressing the front buttons and for about 10 seconds. If you
try to access the OSD by pressing any of the buttons , , and , message "OSD Locked" will
appear on the screen.
2. The OSD lock will be deactivated by pressing the front buttons and again for 10 seconds.
<Power Switch>
1. The power switch lock will be activated by pressing the front buttons and for 10 seconds.
Locking the power switch means that won't be able to turn off the Monitor while the power switch is
locked. If presses the power switch massage "Power Button Locked" will appear on the screen.
2. The power switch lock will be deactivated by pressing the front buttons and again for about 10
seconds.

ENGLISH
16 OPERATING THE MONITOR
SCREEN ADJUSTMENTS
The screen adjustments described in this manual are designed to set image position and minimize
flicker or blur for the particular computer in use.
The monitor is designed to provide the best performance at resolution of 1920 × 1080, but can not
provide the best at resolutions of less than 1920 × 1080 because the picture is automatically stretched
to fit the full screen. It isrecommended to operate at resolution of 1920 × 1080 in normal use.
Displayed text or lines will be blurred or irregular in thickness when the picture is stretched due to
the screen enlargement process.
It is preferable to adjust the image position and frequency with the monitor controls, rather than the
computer software or utilities.
Perform adjustments after a warm-up period of at least thirty minutes.
Additional adjustments may be required after the Auto Image Adjust depending on the resolution or
signal timing.
The Auto Image Adjust may not work correctly when displaying the picture other than the screen
adjustment pattern. In this case, manual adjustments are required.
There are two ways to adjust the screen. One way is automatic adjustment for Position, Clock and
Phase. The other way is performing each adjustment manually.
Perform the Auto Image Adjust first when the monitor is connected to a new computer, or resolution
is changed. If the screen has a flicker or blur, or the picture does not fit in the display area after
performing the Auto Image Adjust, manual adjustments are required. Both adjustments should be
made by using the screen adjustment pattern (Test.bmp) obtained via the IIYAMA web site (http://www.
iiyama.com).
Adjust the image by following the procedure below to get the desired picture.
This manual explains adjustment under Windows 95/98/2000/Me/XP/Vista/7.
ADisplay the picture at the optimum resolution.
BEnter the Test.bmp (screen adjustment pattern) to wallpaper. OTE
Adjust the image by following the procedure below to get the desired picture when selecting Analog input.
NOTE
Zebra pattern
Color bar
Picture frame
[Adjustment pattern]
Consult the appropriate documentation for doing this.
Test.bmp is made at resolution of 1280 × 1024. Set the display position to center in the
wallpaper setting dialogue box. If you use Microsoft®PLUS! 95/98 cancel the setting of
“Stretch desktop wallpaper to fit the screen”.