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LS2421p Wide Monitor

User's Manual

LENOVO (BEIJING) LIMITED

Product numbers
4015-LS1

First Edition (June 2011)

© Copyright Lenovo 2011.
LENOVO products, data, computer software, and services have been developed exclusively at private expense and
are sold to governmental entities as commercial items as defined by 48 C.F.R. 2.101 with limited and restricted rights
to use, reproduction and disclosure.

LIMITED AND RESTRICTED RIGHTS NOTICE: If products, data, computer software, or services are delivered
pursuant a General Services Administration "GSA" contract, use, reproduction, or disclosure is subject to restrictions
set forth in Contract No. GS-35F-05925.

Contents

Safety information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   iii

General Safety guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   iii

Chapter 1. Getting started  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
Shipping contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-1
Attaching the base and handling your monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-1
Product overview  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-2
Adjusting the tilt  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-2
Monitor controls. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-2
Cable lock slot. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3
Setting up your monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3
Connecting and turning on your monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-3
Registering your option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  1-6

Chapter 2. Adjusting and using your monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2-1
Comfort and accessibility. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-1
Arranging your work area . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-1
Positioning your monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-1
Quick tips for healthy work habits . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-2
Accessibility information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-2
Adjusting your monitor image  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-3
Using the direct access controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-3
Using the On-Screen Display (OSD) controls  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-4
Selecting a supported display mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-7
Understanding power management  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-8
Caring for your monitor  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-9
Detaching the monitor hinge cover and stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-9
Wall Mounting (Optional)  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  2-9

Chapter 3. Reference information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-1
Monitor specifications  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-1
Troubleshooting  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-3
Manual image setup  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-4
Manually installing the monitor driver  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-5
Installing the monitor driver in Windows 7 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-5
Installing the monitor driver in Windows Vista  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-6
Installing the monitor driver in Windows XP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-7
Service information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-8
Customer responsibilities  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-8
Service parts  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  3-8

Appendix A. Service and Support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  A-1
Registering your option . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   A-1
Online technical support  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   A-1
Telephone technical support . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   A-1

Appendix B. Notices . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   B-1
Recycling information  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  B-2
Trademarks  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  B-2

Appendix C. USB Hub description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  C-1

 Contents

 ii

Safety information
General Safety guidelines

For tips to help you use your computer safely, go to:
http://www.lenovo.com/safety

Before installing this product, read the Safety Information.

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iii  LS2421p Wide Flat Panel Monitor User’s Guide

Chapter 1. Getting started

This User’s Guide contains detailed information on the your Flat Panel Monitor. For a quick
overview, please see the Setup Poster that was shipped with your monitor.

Shipping contents

The product package should include the following items:

•

•

•

•

•

•

•

Setup Poster

Reference and Driver CD

Flat Panel Monitor

Power Cord

USB Cable

HDMI Cable

Analog Interface Cable - attached to monitor

Attaching the base and handling your monitor

To set up your monitor, please see the illustrations below.

Note: Do not touch the monitor within the screen area. The screen area is glass and can be
damaged by rough handling or excessive pressure.

1. Carefully lays the monitor on a flat surface.

2. Revolve the stand Hand tighten screw by clockwise.

Note: To attach a VESA mount, please see "Wall Mounting (Optional)"on page 2-9.

Chapter 1.

 1-1

Product overview

This section will provide information on adjusting monitor positions, setting user controls, and
using the cable lock slot.

Adjusting the tilt

The illustration below shows the tile range of the monitor. For more information, see
"Positioning your monitor"on page 2-1.

Monitor controls

Your monitor has controls on the front which are used to adjust the display.

For information on how to use these controls, please see "Adjusting your monitor image"on
page 2-3.

Chapter 1.

 1-2

Cable lock slot

Your monitor is equipped with a cable lock slot located on the rear of your monitor (in the
lower position).

Setting up your monitor

This section provides information on how to set up your monitor.

Connecting and turning on your monitor

Note: Be sure to read the Safety information located on page iii before carrying out this
procedure.

1. Power off your computer and all attached devices, and unplug the computer power cord.

2. Connect the cables according to below icon indication.

Chapter 1.

 1-3

3. Connect the analog signal cable to the video port on the back of the computer.

Note: One end of the signal cable is already pre-attached to your monitor.

4. Connect one end of the HDMI cable to the monitor HDMI connector and the other end to

the computer if it has one HDMI output connector.

5. Connect the USB cable to the upstream USB port of the back of the monitor and the other

end to an appropriate USB port on your computer.

Note: The USB port keep available as long as the power supply is right. No matter whether the
power button is on or off.

Chapter 1.

 1-4

6. Plug the speaker's audio cable to audio jack of the monitor and the other end on the

external speaker audio in jack.

Note: The audio output only for HDMI mode.

7.

Insert the power cord into the monitor, then plug the monitor power cord and the computer
cord into grounded electrical outlets.

Note: A certified power supply cord has to be used with this equipment. The relevant national
installation and or equipment regulations shall be considered. A certified power supply cord
not lighter than ordinary polyvinyl chloride flexible cord according to IEC 60227 (designation
H05VV-F 3G 0.75mm2 or H05VVH2-F2 3G0.75mm2) shall be used. Alternative a flexible
cord be of synthetic rubber according to IEC 60245 (designation H05RR-F 3G 0.75mm2) shall
be used.

8. Power on the monitor and the computer..

Chapter 1.

 1-5

9. To install the monitor driver, insert the Reference and Driver CD, click Install driver, and

follow the on-screen instructions.

10. To optimize your monitor image, press the Automatic Image Setup key. Automatic image

setup requires that the monitor is warmed up for at least 15 mintues.This is not required
for normal operation.

Note: If automatic image setup does not establish the image that you prefer, perform manual
image setup. See "Manual image setup"on page 3-4.

Registering your option

Thank you for purchasing this Lenovo™ product. Please take a few moments to
register your Product and provide us with information that will help Lenovo to better
serve you in the future. Your feedback is valuable to us in developing product and
services that are important to you, as well as in developing better ways to
communicte with you. Register your option on the following Web site:

http://www.lenovo.com/register

Lenovo will send you information and updates on your registered product unless you
indicate on the Web site questionnaire that you do not want to receive further
information.

Chapter 1.

 1-6

Chapter 2. Adjusting and using your monitor

This section will give you information on adjusting and using your monitor.

Comfort and accessibility

Good ergonomic practice is important to get the most from your personal computer
and to avoid discomfort. Arrange your workplace and the equipment you use to suit
your individual needs and the kind of work that you perform. In addition, use
healthy work habits to maximize your performance and comfort while using your
computer. For more detailed information on any of these topics, visit the Healthy
Computing Web site at: http://www.lenovo.com/healthycomputing/.

Arranging your work area

Use a work surface of appropriate height and available working area to allow you to
work in comfort.

Organize your work area to match the way you use materials and equipment. Keep
your work area clean and clear for the materials that you typically use and place the
items that you use most frequently, such as the computer mouse or telephone, within
the easiest reach.

Equipment layout and setup play a large role in your working posture. The following
topics describe how to optimize equipment setup to achieve and maintain good
working posture.

Positioning your monitor

Position and adjust your computer monitor for comfortable viewing by considering
the following items:

• Viewing distance: Optimal viewing distances for monitors range from

approximately 510mm to 760mm (20 in to 30 in) and can vary depending on
ambient light and time of day. You can achieve different viewing distances by
repositioning your monitor or by modifying your posture or chair position. Use a
viewing distance that is most comfortable for you.

• Monitor height: Position the monitor so your head and neck are in a comfortable

and neutral (vertical, or upright) position. If your monitor does not have height
adjustments, you might have to place books or other sturdy objects under the
base of the monitor to achieve the desired height. A general guideline is to
position the monitor such that the top of the screen is at or slightly below your
eye-height when you are comfortably seated. However, be sure to optimize your
monitor height so the line of site between your eyes and the center the monitor
suits your preferences for visual distance and comfortable viewing when your eye
muscles are in a relaxed state.

• Tilt: Adjust the tilt of your monitor to optimize the appearance of the screen

content and to accommodate your preferred head and neck posture.

• General location: Position your monitor to avoid glare or reflections on the screen

from overhead lighting or nearby windows.

The following are some other tips for comfortable viewing of your monitor:

• Use adequate lighting for the type of work you are performing.

Chapter 2.

 2-1

• Use the monitor brightness, contrast controls, if equipped to optimize the image

on your screen to meet your visual preferences.

• Keep your monitor screen clean so you can focus on the screen’s contents.

Any concentrated and sustained visual activity can be tiring for your eyes. Be sure to
periodically look away from your monitor screen and focus on a far object to allow
your eye muscles to relax. If you have questions on eye fatigue or visual discomfort,
consult a vision care specialist for advice.

Quick tips for healthy work habits

The following information is a summary of some important factors to consider to help
you remain comfortable and productive while you use your computer.

• Good posture starts with equipment setup: The layout of your work area and the
setup of your computer equipment have a large effect on your posture while
using your computer. Be sure to optimize the position and orientation of your
equipment by following the tips outlined in "Arranging your work area"on page
2-1 so you can maintain a comfortable and productive posture. Also, be sure to
use the adjustment capabilities of your computer components and office furniture
to best suit your preferences now and as your preferences change over time.

• Minor changes in posture can help avoid discomfort: The longer you sit and

work with your computer, the more important it is to observe your working
posture. Avoid assuming any one posture for an extended period of time.
Periodically make minor modifications in your posture to help deter any
discomforts that might arise. Make use of any adjustments that your office
furniture or equipment provide to accommodate changes in posture.

• Short, periodic breaks help ensure healthy computing: Because computing is
primarily a static activity, it is particularly important to take short breaks from
your work. Periodically, stand up from your work area, stretch, walk for a drink
of water, or otherwise take a short break from using your computer. A short break
from work gives your body a welcome change in posture and helps to ensure you
remain comfortable and productive while you do work.

Accessibility information

Lenovo is committed to providing greater access to information and technology to
people with disabilities. With assistive technologies, users can access information in
the way most appropriate to their disability. Some of these technologies are already
provided in your operating system; others can be purchased through vendors or
accessed at:

https://www-03.ibm.com/research/accessibility/requests/accvpat.nsf/lenovo-
bidx?OpenForm

Chapter 2.

 2-2

Adjusting your monitor image

This section describes the control features to adjust your monitor image.

Using the direct access controls

The direct access controls can be used when the On Screen Display (OSD) is not
displayed.
Table 2-1. Direct access controls

Icon

Control

Description

Input Change

Switches the video input source

DDC-CI

Exit

Press and hold for 10 seconds to enable or disable
the DDC-CI function

Exit from menu

Image Setup

Activates automatic image adjustment

NOVO VISION

Direct access to NOVO VISION adjustment

Menu

Enter menu

Mute setting

Press and hold
key to
turn on/off the monitor's touch key volume

key, then press

Chapter 2.

 2-3

Using the On-Screen Display (OSD) controls

To adjust the settings, the user controls can be viewed through the OSD.

Brightness/Contrast

Brightness

Contrast

Exit

Left

Right

OK

To use the controls:

1. Press

 to open the main OSD menu.

2. Use

 or

 to move among the icons. Select an icon and press

function. If there is a sub-menu, you can move between options using
then press
to save.

 to select that function. Use

 or

 to make adjustments. Press

 to access that
  or
,

3. Press

 to move backwards through the sub-menus and exit from the OSD.

4. Press and hold

  for 10 seconds to lock the OSD. This will prevent accidental

adjustments to the OSD. Press and hold
allow adjustments to the OSD.

  for 10 seconds to unlock the OSD and

5. Enables DDC/CI by default. Use OSD Exit Key,   Press and hold

 for 10 seconds
to disable / enable DDC/CI function. The words "DDC/CI disable" shows on the
screen.

Chapter 2.

 2-4

Table 2-2. OSD functions

OSD Icon on Main
Menu

Submenu

Description

Adjusts overall brightness

Controls and
Adjustments
(Analog)

Controls and
Adjustments
(HDMI)

Same as Analog

Brightness/
Contrast

Brightness

 Contrast

Adjusts difference between
light and dark areas

Moves the image left or right.

 Image Position

Horizontal Position

Moves the image up or
down.

Vertical Position

Image Setup

Automatic

Optimizes image (size,position,phase and clock).

Manually optimizes the image. "Manual image
setup"on page 3-4

 Manual

• Clock

•

•

Phase

Save

Controls Locked -
not required  for
HDMI input

Adjusts intensity of red, green, and blue.

Same as Analog

Image Properties

Color

Preset mode

• Neutral

•

sRGB

• Reddish

•

Bluish

Custom

• Red: Increases or decreases the saturation of

’red’ in the image.

• Green: Increases or decreases the saturation of

’green’ in the image.

•

•

Blue: Increases or decreases the saturation of
’blue’ in the image.

Save: Saves the custom color choices.

This monitor can accept video signals through two
different connectors. Most desktop computers use
a D-SUB connector. Select HDMIl among OSD
Controls when you use HDMI connector.

- Selects D-SUB (Analog)
- Selects HDMI (Digital)

Input video signal

Chapter 2.

 2-5

Table 2-2. OSD functions

OSD Icon on Main
Menu

Submenu

Description

Controls and
Adjustments
(Analog)

 Scaling

•

Selects type of scaled image

• Original AR: same aspect ratio with input

signal

•

Full Screen: expand image to full screen

NOVO VISION

Screen prioritization

Controls and
Adjustments
(HDMI)

Same as Analog

 Options

Information

Note: This screen does not allow any changes to
the settings.

Shows resolution, refresh rate, and product details.

Same as Analog

Menu Language

Changes languages of menu.

Note: The language chosen only affects the
language of the OSD. It has no effect on any
software running on the computer.

Adjusts menu location.

Same as Analog

Menu Position

Default
Default returns the menu position to the default
settings.

Custom

• Horizontal: Changes the horizontal position of

the OSD.

• Vertical: Changes the vertical position of the

OSD.

Save

•

Save the custom position choices.

• Cancel

• Reset

Factory default

Reset monitor to the original settings.

Changes button repeat rate and menu time-out setting.

Accessibility

 Button repeat rate:
 to change.

 or

Select

• Off

• Default

•

Slow

 Menu time out: Sets the length of time the

OSD will remain active after the last time a button
is pressed.

• Mute On: Off the monitor's touch key  volume.

• Mute Off: On the monitor's touch key volume.

MUTE

Exit

Exit from menu.

Chapter 2.

 2-6

Selecting a supported display mode

The display mode the monitor uses is controlled by the computer. Therefore, refer to
your computer documentation for details on how to change display modes.

The image size, position and shape might change when the display mode changes.
This is normal and the image can be readjusted using automatic image setup and the
image controls.

Unlike CRT monitors, which require a high refresh rate to minimize flicker, LCD or
Flat Panel technology is inherently flicker-free.

Note: If your system has previously been used with a CRT monitor and is currently
configured to a display mode outside the range of this monitor, you may need to
reattach the CRT monitor temporarily until you have re-configured the system;
preferably to 1920 x 1080 at 60 Hz, which is the Native Resolution Display mode.

The display modes shown below have been optimized at the factory.

Table 2-3. Factory set display modes

Address ability

Refresh rate

NTSC

PAL

640 x 350

720 x 400

640 x 480

720 x 400

800 x 600

832 x 624

1024 x 768

1152 x 864

1280 x 1024

1366 x 768

1440 x 900

1600 x 900

1680 x 1050

1920 x 1080

480I

480P

576P

720P

1080I

1080P

60 Hz

50 Hz

70 Hz

70 Hz

60 Hz, 72 Hz, 75 Hz

70 Hz

56 Hz, 60 Hz, 72 Hz, 75 Hz

75 Hz

60 Hz, 70 Hz, 75 Hz

75 Hz

60 Hz, 70 Hz, 75 Hz

60 Hz

60 Hz

60 Hz

60 Hz

60 Hz

60 Hz

60 Hz

50 Hz

50 Hz, 60 Hz

50 Hz, 60 Hz

50 Hz, 60 Hz

Chapter 2.

 2-7

Understanding power management

Power management is invoked when the computer recognizes that you have not used
your mouse or keyboard for a user-definable period. There are several states as
described in the table below.

For optimal performance, switch off your monitor at the end of each working day, or
whenever you expect to leave it unused for long periods during the day.

Table 2-4. Power indicator

State

On

Power Indicator Screen

Steady white

Normal

Standby/Suspend Orange

Blank

 Off

Off

Blank

Restoring
Operation

Compliance

ENERGY STAR

ENERGY STAR

Press a key or
move the mouse

There may be a
slight delay
before the image
reappears.

Note: Standby
also occurs if
there is no image
output to the
monitor.

Press the power
button

There may be a
slight delay
before the image
reappears.

Chapter 2.

 2-8

Caring for your monitor

Be sure to turn off the power before you perform any maintenance on the monitor.

Do not:

• Apply water or liquid directly to your monitor.

• Use solvents or abrasives.

• Use flammable cleaning materials to clean your monitor or any other electrical

equipment.

• Touch the screen area of your monitor with sharp or abrasive items. This type of

contact may cause permanent damage to your screen.

• Use any cleaner which contains an anti-static solution or similar additives. This

may harm the coating of the screen area.

Do:

• Lightly dampen a soft cloth with water and use this to gently wipe the covers and

the screen.

• Remove grease or finger marks with a damp cloth and a little mild detergent.

Detaching the monitor hinge cover and stand

step 1: Place the monitor on a soft and flat surface. Remove the stand first.

step 2: Push up the VESA cover and take down the VESA cover.

step 3: Then  loosen the four screws on the hinge  and  remove  the base.

2

3

1

Wall Mounting (Optional)

Refer to the instructions that come with the base mounting kit. To convert your LCD
display from a desk-mounted to a wall-mounted display, do the following:

Step 1: Verify that the Power button is turned Off, then disconnect the power cord.

Step 2: Lay the LCD display face down on a towel or blanket.

Chapter 2.

 2-9

Step 3: Revolve the monitor VESA cover and stand, refer to "Detaching the monitor
hinge cover and stand" insure that it is parallel to top of the back side.

Step 4: Attach the mounting bracket from the VESA compatible wall mounting kit
(100mm x100mm distance), VESA Mounting Screw M4 x 10 mm.

VESA hole

Step 5: Attach the LCD display to the wall,  following the instructions in the wall-
mounting kit.

For use only with UL Listed Wall Mount Bracket with minimum weight/load: 8kg

Chapter 2.

 2-10

Chapter 3. Reference information

This section contains monitor specifications, instructions to manually install the
monitor driver, troubleshooting information, and service information.

Monitor specifications

Table 3-1. Monitor specifications for type-model LS2421pwA

Dimensions

Stand

Height

Depth

Width

Tilt

411.0 mm (16.18 in.)

180.0 mm (7.09 in.)

570.0 mm (22.44 in.)

Range: -5~ 20

VESA mount

Supported

100 mm x 100 mm (3.94 in. x 3.94 in.)

Image

Viewable image size

598.1 mm (23.6 in.)

Maximum height

293.2 mm (11.54 in.)

Maximum width

521.3 mm (20.52 in.)

Pixel pitch

0.2712 mm (0.01 in.)

Power input

Supply voltage

90-264VAC (100~240VAC+/-10%)

Max supply current

1.5 A           -

Power consumption

Normal operation

<35W

Note: Power consumption
figures are for the monitor
and the power supply
combined.

Standby/Suspend

<1W(Analog), <1W(HDMI)

Off

<0.5W at 100Vac & 240Vac

Note: without USB

Video input(Analog)

Input signal

Analog Direct Drive, 75 ohm 0.7V

Horizontal
addressability

1920 pixels (max)
--

Vertical addressability

1080 lines (max)

Clock frequency

205 MHz

Video input

Input Signal

HDMI

Horizontal
addressability

1920 pixels (max)
-

Vertical addressability

1080 lines (max)

Clock frequency

165 MHz

Chapter 3.

 3-1

Table 3-1. Monitor specifications for type-model LS2421pwA

Communications

VESA DDC

CI

Supported Display Modes  Horizontal frequency

30 kHz - 83 kHz

Vertical frequency

50 Hz - 75 Hz

Native Resolution

1920 x 1080 at 60 Hz

Temperature

Operating

0 to 40 C (32 to 104 F)

Humidity

Storage

Shipping

Operating

Storage

Shipping

-20 to 60 C (-4 to 140 F)

-20 to 60 C (-4 to 140 F)

8% to 80% non-condensing

5% to 95% non-condensing

5% to 95% non-condensing

Chapter 3.

 3-2

Troubleshooting

If you have a problem setting up or using your monitor, you might be able to solve it
yourself. Before calling your dealer or Lenovo, try the suggested actions that are
appropriate to your problem.

Table 3-2. Troubleshooting

Problem

Possible cause

Suggested action

Reference

The words "Out
of Range" are
shown on the
screen, and the
power indicator
is flashing white.

The system is set to a
display mode which
is not supported by
the monitor.

"Selecting a
supported display
mode"on page 2-7

If you are replacing an old
monitor, reconnect it and
adjust the display mode to
within the specified range
for your new monitor.

If using a Windows
system, restart the system
in safe mode, then select a
supported display mode
for your computer.

If these options do not
work, contact the Support
Center.

The image
quality is
unacceptable.

The video signal cable
is not connected with
the monitor or system
completely.

Be sure the signal cable is
firmly plugged into the
system and monitor.

"Connecting and
turning on your
monitor"on page 1-3

The color settings
may be incorrect.

Select another color setting
from the OSD menu.

The power
indicator is not
lit and there is
no image.

The automatic image
setup function was
not performed.

•

•

•

The monitor’s
power switch is
not switched on.

The power cord is
loose or
disconnected.

There is no power
at the outlet.

Screen is blank
and power
indicator is
orange.

The monitor is in
Standby/Suspend
mode

"Adjusting your
monitor image"on
page 2-3

"Adjusting your
monitor image"on
page 2-3

Perform automatic image
setup.

•

•

•

•

•

•

Be sure the power
cord is connected
properly.

"Connecting and
turning on your
monitor"on page 1-3

Be sure the outlet has
power.

Power on the monitor.

Try using another
power cord.

Try using another
electrical outlet.

Press any key on the
keyboard or move the
mouse to restore
operation.

"Understanding
power
management"on
page 2-8

• Check the Power

Options settings on
your computer.

Chapter 3.

 3-3

Table 3-2. Troubleshooting

Problem

Possible cause

Suggested action

Reference

The power
indicator is
orange, but there
is no image.

The video signal cable
is loose or
disconnected from the
system or monitor.

Be sure the video cable is
connected with the system
properly.

"Connecting and
turning on your
monitor"on page 1-3

The monitor
brightness and
contrast are at the
lowest setting.

This is a characteristic
of the LCD
technology and is not
an LCD defect.

•

Image setup has
not been
optimized

• Your system
Display
Properties setting
have not been
optimized.

One or more of
the pixels appear
discolored

•

Fuzzy lines
in text or a
blurry
image.

• Horizontal
or vertical
lines
through the
image.

Adjust the brightness and
contrast setting on the
OSD menu.

"Adjusting your
monitor image"on
page 2-3

If there are more than five
pixels missing, contact the
Support Center.

Adjust the resolution
settings on your system to
match the native
resolution for this monitor:
1920 x 1080 at 60 Hz.

Perform automatic image
setup.  If automatic image
setup does not help,
perform manual image
setup.

When working in the
native resolution, you may
find additional
improvements by
adjusting the Dots Per
Inch (DPI) setting on your
system.

Appendix
A."Service and
Support"on page
A-1

"Adjusting your
monitor image"on
page 2-3

"Selecting a
supported display
mode"on page 2-7

See the Advanced
section of your
system’s display
properties.

Manual image setup

If automatic image setup does not establish the image that you prefer, perform
manual image setup.

Note: Have your monitor powered on for about 15 minutes, until the monitor warms
up.

1. Press

  at the bottom of the monitor to open the OSD menu.

2. Use

 or

 to select

 and press

 to access.

3. Use

 or

 to select manual and press

 to access.

4. Use

 or

 to select Clock and Phase adjustment.

• Clock (pixel frequency) adjusts the number of pixels scanned by one

horizontal sweep. If the frequency is not correct, the screen shows vertical
stripes and the picture does not have the correct width.

• Phase adjusts the phase of the pixel clock signal. With a wrong phase
adjustment, the picture has horizontal disturbances in light picture.

5. When the image no longer looks distorted, save the Clock and Phase adjustments.

6. Press

 to leave the OSD menu.

Chapter 3.

 3-4

Manually installing the monitor driver

Below are steps for manually installing the monitor driver in Microsoft Windows 7,
Microsoft Windows Vista, Microsoft Windows XP.

Installing the monitor driver in Windows 7

To use the Plug and Play feature in Microsoft Windows 7, do the following:

Note:  You must download file from the Reference and Driver CD to use the Plug and
Play feature in Windows 7.

1. Turn off the computer, all attached devices.

2. Ensure that the monitor is connected correctly.

3. Turn on the monitor and then the system unit. Allow your computer to start the

Windows 7 operating system.

4. Open the Display Properties window by clicking Start, Control Panel and

Hardware and Sound icon. and then clicking the Display icon.

5. Click the Change the display settings tab.

6. Click the Advanced Settings icon.

7. Click the Monitor tab.

8. Click the Properties button.

9. Click the Driver tab.

10. Click Update Driver, then click Browse my computer for driver software.

11. Select Let me pick from a list of device drivers on my computer.

12. Click the Have Disk button. Click the Browse button and navigate to the

following directory:
X:\Monitor Drivers
(where X is the drive letter designator for the CD-ROM drive).

13. Select the "LEN LS2421pwA.inf" file and click the Open button. Click the OK

button.

14. Select LEN LS2421pwA and click Next. The files will be copied from the CD to

your hard disk drive.

15. Close all open windows and remove the CD.

16. Restart the system. The system will automatically select the maximum refresh

rate and corresponding Color Matching Profiles.

Note: On LCD monitors, unlike CRTs, a faster refresh rate does not improve display
quality. Lenovo recommends using either 1920 x 1080 at a refresh rate of 60 Hz, or 640
x 480 at a refresh rate of 60 Hz.

Chapter 3.

 3-5

Installing the monitor driver in Windows Vista

To use the Plug and Play feature in Microsoft Windows Vista, do the following:

Note: You must download file from the Reference and Driver CD to use the Plug and
Play feature in Windows Vista.

1. Turn off the computer and all attached devices.

2. Ensure that the monitor is connected correctly.

3. Turn on the monitor and then the system unit. Allow your computer to start the

Windows Vista operating system.

4. Click Start, Control Panel and then click the Hardware and Sound icon.

5. Click the Personalization icon.

6. Click the Display Settings icon.

7. Click the Advanced Settings button.

8. Click the Monitor tab.

9. Click the Properties button.

10. Click the Driver tab.

11. Click Update Driver, then click Browse the computer to find  the driver

program.

12. Select Pick from the list of device driver program on the computer.

13. Click the Have Disk button. Click the Browse button and navigate to the

following directory:
X:\Monitor Drivers
(where X is the drive letter designator for the CD-ROM drive).

14. Select the "LEN LS2421pwA.inf" file and click the Open button. Click the OK

button.

15. Select LEN LS2421pwA and click Next. The files will be copied from the CD to

your hard disk drive.

16. Close all open windows and remove the CD.

17. Restart the system. The system will automatically select the maximum refresh

rate and corresponding Color Matching Profiles.

Note: On LCD monitors, unlike CRTs, a faster refresh rate does not improve display
quality. Lenovo recommends using either 1920 x 1080 at a refresh rate of 60 Hz, or 640
x 480 at a refresh rate of 60 Hz.

Chapter 3.

 3-6

Installing the monitor driver in Windows XP

To use the Plug and Play feature in Microsoft Windows XP, do the following:

Note: You must download file from the Reference and Driver CD to use the Plug and
Play feature in Windows XP.

1. Turn off the computer and all attached devices.

2. Ensure that the monitor is connected correctly.

3. Turn on the monitor and then the system unit. Allow the system to boot into

Windows XP.

4. Open the Display Properties window by clicking Start, Control Panel and then

double-clicking the Display icon.

5. Click the Settings tab.

6. Click the Advanced button.

7. Click the Monitor tab.

8. Click the Properties button.

9. Click the Drivers tab.

10. Open the Hardware Update Wizard window by clicking on Update Driver.

11. Select Install from a list or Specific location (Advanced) and then click Next.

12. Select Don't search. I will choose the driver to install option and then click Next.

13. Click the Have Disk button. Click on the Browse button and navigate to the
following directory:
X:\Monitor Drivers
(where X is the drive letter designator for the CD-ROM drive).

14. Select the "LEN LS2421pwA.inf" file and click the Open button. Click the OK

button.

15. Select LEN LS2421pwA and click Next. The files will be copied from the CD to

your hard disk drive.

16. Close all open windows and remove the CD.

17. Restart the system. The system will automatically select the maximum refresh

rate and corresponding Color Matching Profiles.

Note: On LCD monitors, unlike CRT, a faster refresh rate does not improve display quality.
Lenovo recommends using either 1920 x 1080 at a refresh rate of 60 Hz, or 640 x 480 at a
refresh rate of 60 Hz.

Chapter 3.

 3-7

Service information

Customer responsibilities

The warranty does not apply to a product which has been damaged due to accident,
misuse, abuse, improper installation, usage not in accordance with product
specifications and instructions, natural or personal disaster, or unauthorized
alterations, repairs or modifications.

The following are examples of misuse or abuse and not covered by warranty:

•Images burned onto the screen of a CRT monitor. Burned image is preventable by
utilizing a moving screen saver or power management.

•Physical damage to covers, bezel, base and cables.

•Scratches or punctures on monitor screens.

Service parts

The following parts are for use by Lenovo service, or Lenovo aurthorized dealers, to

supprot the customer warranty. Parts are for service use only. The table below shows

information for model 4015-LS1.

Table 3-3. List of service parts

FRU part number  Description

MachineType
Number (MTM)

COLOR

03X7933

03X7902

45J8727

03X7934

LS2421p Wide-
FRU Monitor

4015-LS1

Analog cable(1.8m) 4015-LS1

HDMI cable(1.8m)

4015-LS1

LS2421p Wide-
FRU  Stand

4015-LS1

Black

Black

Black

Black

Chapter 3.

 3-8

Appendix A. Service and Support

The following information describes the technical support that is available for your
product, during the warranty period or throughout the life of your product. Refer to
the Lenovo Limited Warranty for a full explanation of Lenovo warranty terms.

Registering your option

Register to receive product service and support updates, as well as free and
discounted computer accessories and content. Go
to:http://www.lenovo.com/register

Online technical support

Online technical support is available during the lifetime of a product at:
http://www.lenovo.com/support

Product replacement assistance or exchange of defective components also is available
during the warranty period. In addition, if your option is installed in a Lenovo
computer, you might be entitled to service at your location. A Lenovo technical
support representative can help you determine the best alternative.

Telephone technical support

Installation and configuration support through the Customer Support Center will be
available until 90 days after the option has been withdrawn from marketing. After
that time, the support is cancelled, or made available for a fee, at Lenovo’s discretion.
Additional support is also available for a nominal fee.

Before contacting a Lenovo technical support representative, please have the
following information available: option name and number, proof of purchase,
computer manufacturer, model, serial number and manual, the exact wording of any
error message, description of the problem, and the hardware and software
configuration information for your system.

Your technical support representative might want to walk you through the problem
while you are at your computer during the call.

Telephone numbers are subject to change without notice. The most up-to-date
telephone list for Lenovo Support is always available at:

http://www.lenovo.com/support/phone

Country or Region

Telephone Number

Africa

Argentina

Australia

Africa: +44 (0)1475-555-055
South Africa: +27-11-3028888 and 0800110756
Central Africa: Contact the nearest Lenovo
Business Partner

0800-666-0011 (Spanish)

131-426 (English)

Appendix A.

 A-1

Austria

Belgium

Bolivia

Brazil

Brunei

Canada

Chile

China

China
(Hong Kong S.A.R.)

China
(Macau S.A.R.)

Colombia

Costa Rica

Croatia

Cyprus

Warranty service and support:01-211-454-610 (German)

Warranty service and support: 02-225-3611 (Dutch,
French)

0800-10-0189 (Spanish)

Sao Paulo region: (11) 3889-8986
Outside Sao Paulo region: 0800-701-4815
(Brazilian Portuguese)

801-1041 (English, Bahasa Melayu)

Toronto: 416-383-3344
Outside Toronto: 1-800-565-3344
(English, French)

Toll Free: 188-800-442-488
800-361-213
(Spanish)

86-10-58851110
 800-990-8888
 (Mandarin)

ThinkCentre®Commercial PC: 8205-0333
 Multimedia Home PC: 800-938-228
(Cantonese, English, Mandarin)

ThinkCentre Commercial PC: 795-9892
 Multimedia Home PC: 0800-336
(Cantonese, English, Mandarin)

1-800-912-3021 (Spanish)

0-800-011-1029 (Spanish)

0800-0426

+357-22-841100

Czech Republic

+420-2-7213-1316

Denmark

Warranty service and support: 7010-5150 (Danish)

Dominican Republic

1-866-434-2080 (Spanish)

Ecuador

Egypt

El Salvador

Estonia

Finland

France

Germany

1-800-426911 (Spanish)

+202-35362525

800-6264 (Spanish)

+372 6776793
+372 66 00 800

Warranty service and support: +358-800-1-4260
(Finnish)

Warranty service and support (hardware): 0810-631-
213
Warranty service and support (software): 0810-631-020
(French)

Warranty service and support: 01805-00-46-18
(German)

Appendix A.

 A-2

Greece

Guatemala

Honduras

Hungary

India

Indonesia

Ireland

Israel

Italy

Japan

Korea

Latvia

Lithuania

Luxembourg

Malaysia

Malta

Mexico

Middle East

Netherlands

New Zealand

+30-210-680-1700

1800-624-0051 (Spanish)

Tegucigalpa: 232-4222
 San Pedro Sula: 552-2234
(Spanish)

+36-1-382-5716
+36-1-382-5720
(English, Hungarian)

1800-425-2666
+91-80-2535-9182
(English)

021 5238 823
Local number only: 001-803-606-282
DID (Direct Inward Dialing): +603 8315 6859
(English, Bahasa Indonesia)

Warranty service and support: 01-881-1444 (English)

Givat Shmuel Service Center: +972-3-531-3900
(Hebrew, English)

Warranty service and support: +39-800-820094 (Italian)

Toll Free: 0120-20-5550
International: +81-46-266-4716

The above numbers will be answered with a Japanese
language voice prompt. For telephone support in
English, please wait for the Japanese voice prompt to
end, and an operator will answer. Please say "English
support please," and your call will be transferred to an
English-speaking operator.

PC software: 0120-558-695
Overseas calls: +81-44-200-8666
(Japanese)

1588-6782 (Korean)

+371 7070360

+370 5 278 66 00

+352-360-385-343 (French)

Local number only: 1800-88-1889
DID: +603 8315 6855
(English, Bahasa Melayu)

+35621445566

001-866-434-2080 (Spanish)

+44 (0)1475-555-055

+31-20-514-5770 (Dutch)

0800-733-222 (English)

Appendix A.

 A-3

Nicaragua

Norway

Panama

Peru

Philippines

Poland

Portugal

Romania

Russia

Singapore

Slovakia

Slovenia

Spain

Sri Lanka

Sweden

Switzerland

Taiwan

Thailand

Turkey

001-800-220-1830 (Spanish)

Warranty service and support: 8152-1550 (Norwegian)

Lenovo Customer Support Center: 001-866-434-2080
(Toll Free) 206-6047
(Spanish)

0-800-50-866 (Spanish)

1800-1601-0033 (English, Filipino)

+48-22-878-6999 (Polski)

+351-21-892-7046 (Portuguese)

+4-021-224-4015

Moscow: +7-(495)-258-6300
Toll Free: +8-800-200-6300
(Russian)

Local number only: 800-6011-343
DID: +603 8315 6859 (English)

+421-2-4954-5555

+386-1-200-50-60 (Slovenian)

91-714-7983
0901-100-000
(Spanish)

+9411 2493547
+9411 2493548
(English)

Warranty service and support: 077-117-1040 (Swedish)

Warranty service and support: 0800-55-54-54
(German, French, Italian)

886-2-8723-9799
0800-000-700
(Mandarin)

Local number only: 1-800-060-066
66 2273 4088 DID: +603 8315 6857
(Thai, English)

00800-4463-2041 (Turkish)

United Kingdom

Standard warranty support: 08705-500-900 (English)

United States

1-800-426-7378 (English)

Uruguay

Venezuela

Vietnam

000-411-005-6649 (Spanish)

0-800-100-2011 (Spanish)

For Northern Area and Hanoi City:
844 3 946 2000 or 844 3 942 6457
For Southern Area and Ho Chi Minh City:
848 3 829 5160 or 844 3 942 6457
(Vietnamese, English)

Appendix A.

 A-4

Appendix B. Notices

Lenovo may not offer the products, services, or features discussed in this document in
all countries. Consult your local Lenovo representative for information on the
products and services currently available in your area. Any reference to a Lenovo
product, program, or service is not intended to state or imply that only that Lenovo
product, program, or service may be used. Any functionally equivalent product,
program, or service that does not infringe any Lenovo intellectual property right may
be used instead. However, it is the user’s responsibility to evaluate and verify the
operation of any other product, program, or service.

Lenovo may have patents or pending patent applications covering subject matter
described in this document. The furnishing of this document does not give you any
license to these patents. You can send license inquiries, in writing, to:

Lenovo (United States), Inc.
1009 Think Place - Building One
Morrisville, NC 27560    U.S.A.
Attention: Lenovo Director of Licensing

LENOVO PROVIDES THIS PUBLICATION “AS IS” WITHOUT WARRANTY OF
ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY
OR FITNESS FOR A PARTICULAR PURPOSE. Some jurisdictions do not allow
disclaimer of express or implied warranties in certain transactions, therefore, this
statement may not apply to you.

This information could include technical inaccuracies or typographical errors.
Changes are periodically made to the information herein; these changes will be
incorporated in new editions of the publication. Lenovo may make improvements
and/or changes in the product(s) and/or the program(s) described in this publication
at any time without notice.

The products described in this document are not intended for use in implantation or
other life support applications where malfunction may result in injury or death to
persons. The information contained in this document does not affect or change
Lenovo product specifications or warranties. Nothing in this document shall operate
as an express or implied license or indemnity under the intellectual property rights of
Lenovo or third parties. All information contained in this document was obtained in
specific environments and is presented as an illustration. The result obtained in other
operating environments may vary.

Lenovo may use or distribute any of the information you supply in any way it
believes appropriate without incurring any obligation to you.

Any references in this publication to non-Lenovo Web sites are provided for
convenience only and do not in any manner serve as an endorsement of those Web
sites. The materials at those Web sites are not part of the materials for this Lenovo
product, and use of those Web sites is at your own risk.

Any performance data contained herein was determined in a controlled environment.
Therefore, the result obtained in other operating environments may vary
significantly. Some measurements may have been made on development-level
systems and there is no guarantee that these measurements will be the same on
generally available systems. Furthermore, some measurements may have been
estimated through extrapolation. Actual results may vary. Users of this document
should verify the applicable data for their specific environment.

Appendix B.

 B-1

Recycling information

Lenovo encourages owners of information technology (IT) equipment to responsibly recycle
their equipment when it is no longer needed. Lenovo offers a variety of programs and services
to assist equipment owners in recycling their IT products. For information on recycling
Lenovo products, go to: http://www.lenovo.com/lenovo/environment/recycling

Collecting and recycling a disused Lenovo computer or monitor

If you are a company employee and need to dispose of a Lenovo computer or monitor that is
the property of the company, you must do so in accordance with the Law for Promotion of
Effective Utilization of Resources. Computers and monitors are categorized as industrial waste
and should be properly disposed of by an industrial waste disposal contractor certified by a
local government. In accordance with the Law for Promotion of Effective Utilization of
Resources, Lenovo Japan provides, through its PC Collecting and Recycling Services, for the
collecting, reuse, and recycling of disused computers and monitors. For details, visit the
Lenovo Web site at www.ibm.com/jp/pc/service/recycle/pcrecycle/. Pursuant to the Law for
Promotion of Effective Utilization of Resources, the collecting and recycling of home-used
computers and monitors by the manufacturer was begun on October 1, 2003. This service is
provided free of charge for home-used computers sold after October 1, 2003. For details, visit
the Lenovo Web site at www.ibm.com/jp/pc/service/recycle/personal/.

Disposing of Lenovo computer components

Some Lenovo computer products sold in Japan may have components that contain
heavy metals or other environmental sensitive substances. To properly dispose of
disused components, such as a printed circuit board or drive, use the methods
described above for collecting and recycling a disused computer or monitor.

Trademarks

The following terms are trademarks of Lenovo in the United States, other countries, or
both:

       Lenovo

The Lenovo logo
ThinkCentre
ThinkPad
ThinkVision

Microsoft, Windows, and Windows NT are trademarks of the Microsoft group of
companies.Other company, product, or service names may be trademarks or service
marks of others.

Appendix B.

 B-2

Appendix C. USB Hub description

This section gives you information about the USB ports that are available on your monitor.

 Note: This monitor supports High-Speed Certified USB 2.0 interface

Transfer speed

High speed

Full speed

Low speed

Data Rate

480 Mbps

12 Mbps

1.5 Mbps

 Power Consumption

 2.5W (Max.,each port)

 2.5W (Max.,each port)

 2.5W (Max.,each port)

USB Upstream Connector

USB Downstream Connector

                                                                                     Appendix C.

 C-1