Lenovo Thinkvision L2251x Users Guide

							
 
 
 
  
Selecting a supported display mode 
The display mode the monitor uses is controlled by the computer. Therefore, refer 
to your computer documentation for deta ils on how to change display modes.   
The image size, position and shape might ch ange 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 re fresh rate to minimize flicker, LCD or   
Flat Panel technology is inherently flicker-free.   
Note: If your system has previously b een used with a CRT monitor and is   
currently configured to a display mode outs ide the range of this monitor, you may   
need to re-attach the CRT monitor temporarily until you have re-configured the   
system; preferably to 1680x1050 at 60Hz,  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  Addressability Refersh rate 
   
Understanding power management 
Power management is invoked when the computer recognizes that you have not   
you’re 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 un used for long periods during the day. 
Table2-4.Power indicator 
State Power Indicator Screen Restoring Operation  Compliance 
On Steady green Normal   
Standby/ 
Supsend  Steady amber  Blank  Press a key or move the 
mouse. 
There may be a slight   
delay reappears. 
Note: Standby also occurs   
if there is no image output 
to the monitor. ENERGY STAR 
Off 
Off Off Press power key to switch 
on. 

There may be a slight delay 
before the image reappears. ENERGY STAR 
 

 

 
 
 
PAL 50Hz 
640x350 70Hz 
800x600 60Hz,72Hz,75Hz 
1024x768 60Hz,70Hz,75Hz 
1152x864 75Hz 
1280x1024 60Hz,72Hz,75Hz 
1440x900 60Hz,75Hz 
1600x1000 60Hz 
1680x1050 60Hz,75Hz 
2-7 L2251x Wide Flat Panel Monitor User’s Guide 
720x400 70Hz  640x480 60Hz,66Hz,72Hz,75Hz 
640x500 58Hz 
1360x768 60Hz 
 
						

							
 
 
 
  
Image rotation 
Before rotating the monitor, you should set-up your computer to rotate the image. 
Rotating the image may require special rotati on software or you may find that your 
computer is preloaded with video graphic  drivers that allows image rotation. Check 
the Graphic Properties setting on your comput er to see if this feature is available. 
Try these steps to check if image rota tion is available on your computer. 
1.   Right-click on the desktop and click  Properties. 
2.   Select the  Settings tab and click  Advanced. 
3.   If you have ATI, select the  Rotation tab and set the preferred rotation. If you have 
nVidia, click the  nVidia tab, in the left-hand column select  NVRotate, and then 
select the preferred rotation. If you have Intel, select the  Intel graphics tab, click 
Graphic Properties , select the Rotation tab, and then set the preferred rotation. 
Check with the manufacturer of your comput er to see if graphic drivers with image 
rotation can be downloaded from their support website. 
   
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 an d 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 stand 
After placing the monitor face down on a clean surface or soft cloth, remove the four 
screws from the stand to remove it from the monitor. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Chapter 2. Adjusting and using your monitor   2-8
 
 
 
 
						

							
 
 
 
 
 
Chapter 3. Reference information 
This section contains monitor specifications,  instructions to manually install the   
monitor drover, troubleshooting information, and service information. 
   
Monitor specifications 
Dimensions Height 
Depth 
Wi
dth 
Tilt range  Range: 0°/+30° 
Swivel  Range: -45°, +45° 
Lift  Range: 110.0 mm 
Stand 
Pivot  Yes (clock wise 90 degree) 
VESA mount Supported  100 mm (3.94 in) 
Image Viewable image size 
Maximum height 
Maximum width 
Pixel pitch 
Power input 
Supply voltage 
Max supply current 100-240 VAC, 60/503 Hz 
1.5 A 
Power consumption Note: Power consumption figures  
are for the monitor and the 
power supply combined. 
Standby/Suspend 
Off  < 1
W 
< 0.5 W 
Video input (Analog)  Input signal 
Horizontal addressability
 
Vertical addressability 
Clock frequency  Analog Direct Drive, 75 ohm 0.7 V 
1680 pixels (max) 
1050 lines (max) 
205 MHz 
Video input (Digital) 
Interface 
Horizontal addressability
 
Vertical addressability 
Clock frequency  DP 
1680 pixels (max) 
1050 lines (max) 
Communications VESA 
DDC  CI 
Altitude Test Operation 8,000 ft 
Horizontal frequency 
 
Vertical frequency 
50 Hz – 75 Hz Supported Display Modes 
 
(VESA Standard modes between 
noted ranges) 
Native Resolution  1680 x 1050 at 60 Hz 
Temperature  Operating 
Storage 
Shipping 0° to 40°C (32° to 104° F) 
-20° to 60°C (-4° to 140° F) 
-20° to 60°C (-4° to 140° F) 
 
 
 
 
 
 
 
Table 3-1. Monitor specific
ations for type-model 
  Copyright Lenovo 2009.                                                                                  3-1
10.8Gbps 
DP: 30 kHz – 83 kHz 

241.20 mm (9.496 in) 
506.00  mm (19.921 in)  
Max Consumption 
(
Without USB hub) 

Typical Consumption   
						

							
 
 
 
 
 
 
Table 3-1. Monitor specifications for type-model (continued) 
Humidity Operating 
Storage 
Shipping 10% to 80% 
5%° to 95% 
5% to 95% 
 
 
Troubleshooting 
If you have a problem setting up or using your monitor, you might be able to   
solve it yourself. Before ca lling your dealer or Lenovo,  try the suggested actions   
that are appropriate  to your problem. 
Table3-2.Troubleshooting 
Problem  Possible cause  Suggested action  Reference 
The words” Out 
of Range” are 
shown on the 
screen, and the 
power indicator   
is flashing green. The system is set 
to a display   
mode which is 
not supported   
by the monitor. 
● 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    Customer Support   
Center
.  
“Selecting a supported 
display mode” on page    2-6
 
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 
1-4 
The color   
settings may be 
incorrect.  Select another color setting 
from the OSD menu. 
“Adjusting your monitor 
image” on page 2-3 
The image   
quality is 
unacceptable. 
The automatic 
image setup 
function was not 
performed. Perform automatic image 
setup. 
“Adjusting your monitor 
image” on page 2-3 
The power 
indictator is not 
lit and there is no 
image. ● The monitor’s 
power switch 
 
is not   
switched on
.  
● The power   
cord is loose   
or 
disconnected.
  
● There is no  power at the 
outlet.
 
● Be sure the power cord   is connected properly.
  
● Be sure the outlet has 
power. 
 
●  Power on the monitor.  
● Try using another   
power cord.   
● Try using another   electrical outlet.
 
“Connecting and turning  
on your monitor” on   
page  1-4
 
 
 
 

 
 
 3-2  L2251x Wide Flat Panel Monitor User’s Guide 
 
						

							
 
 
 
 
 
Table3-2.Troubleshooting(continued) 
Problem Possible cause Suggested action  Reference 
Screen is blank 
and power 
indicator is 
steady amber or 
flashing green The monitor is in 
Standby/Suspen
d mode ● Press any key on the 
keyboard or move the 
  mouse to restore    operation.  
● Check the Power   
Options settings on   
your computer.
 
“Understanding power 
management” on page   
2-6
 
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 
1-4 
The power 
indicator is 
green, but there 
is no image. 
The monitor 
brightness and 
contrast are at   
the lowest 
setting.  Adjust the brightness and 
contrast setting on the OSD 
menu. 
“Adjusting your monitor 
image” on page 2-3 
One or more of 
the pixels appear 
discolored This is a 
characteristic of 
the LCD 
technology and 
 
is not an LCD 
defect.  If there are more than   
five pixels missing,   
contact the Customer 
Support Center.  Appendix A, “Service and 
Support,” on page A-1 
Adjust the resolution   
settings on your system   
to match the native 
resolution for this   
monitor: 1680x1050 at 60 
Hz. “Adjusting your monitor 
image” on page 2-3   
 
“Manual image setup” 
Perform automatic image 
setup. If automatic image 
setup does not help,   
perform manual image 
setup. 
“Selecting a supported 
display mode” on page   
2-6 
● Fuzzy lines in 
text or a blurry 
image. 
● 
Horizontal or 
vertical lines 
through the 
image.
 
● Image setup   
has not been 
optimized  
● Your system 
Display 
Properties 
setting have   
not been optimized
. 
When working in the   
native resolution, you   
may find additional 
improvements by  adjusting the  Dots Per   
Inch (DPI) setting on   
your system.  See the Advanced section  
of your system’s display 
properties. 
 
Manual image setup 
If automatic image setup does not estab
lish the image that you prefer, perform   
manual image setup. 
 
Note: Have your monitor powered on fo r 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  Clock and Phase  adjustment. 
 
 
Chapter 3. Reference information   3-3 
 
 
 
 
						

							
 
 
 
 
 
 
● Clock (pixel frequency) adjusts the nu mber of pixels scanned by one 
Horizontal sweep. If the frequency is no t 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. 
4.   When the image no longer looks di storted, save the Clock and Phase 
adjustments. 
5.   Press 
  to leave the OSD menu. 
 
 
 
 
Manually installing the monitor driver 
Below are steps for manually installing the mo nitor driver in Microsoft Windows Vista,   
Microsoft Windows XP. 
 
Installing the monitor driver in Windows Vista 
To install the device driver in Micros oft® Windows Vista, do the following:   
Note: You must download files from the Lenovo  Monitor 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.   Open the  Display Properties  window by clicking Start, Control Panel 
and then double-clicking 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.  Open the  Update Driver Software-Generic PnP Monitor  window by clicking on Update Driver 
and then click the  Browse my computer for driver software  button. 
12.  Select “ Let me pick from a list of device drivers on my computer ” and then click the Next button. 
13.  Insert the Lenovo Monitor CD in to the CD drive and click the Have Disk button. 
    Click on the  Browse button and navigate to the following directory: 
X:\Monitor Drivers\Windows Vista  (where X is the drive letter designat or for the CD-ROM drive). 
. The files will be copied from th e CD to your hard disk drive. 
16.  Close all open windows and remove the CD. 
17.  Restart the computer. 
   
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 1680 x 1050 at a refresh rate  of 60 Hz, or 640 x 480 at a refresh rate of 60 Hz. 
 
 
 
 

 
 
 
14. Select the   L2251xwD.inf   file and click the  Open button. Click the OK  button. 
15.  Select  L2251xwD  and click Next
3-4  L2251x Wide Flat Panel Monitor User’s Guide 
 
						

							
 
 
 
 
 
 
Installing the monitor driver in Windows XP 
To use the Plug and Play feature in Windows XP, files should be loaded from the   
Reference and Driver CD. 
 
Note: This section must be completed be fore continuing with the Windows XP   
automatic image setup. 
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 
Settings  Control  
Panel , and then double-clicking the  Display icon. 
5.   Click the  Setting tab. 
6.   Click the  Advanced  button. 
7.   Clink the  Monitor tab. 
8.   Clink the  Properties  button. 
9.   Clink the  Drivers tab. 
10.  Open the  Hardware Update Wizard  window by clicking on Update Driver,  
and then click  Next. 
11.  Select  Install from a list or Speci fic location (Advanced) , and then click Next. 
12.  Insert the Setup CD into the CD driv er, then click the Have Disk button. 
13.  Click on the  Browse button and navigate to the following directory: 
(where  X is the drive letter designat or for the CD-ROM drive). 
from the CD to your hard disk drive. 
16.  Close all open windows and remove the CD. 
17.  Restart the system. The system will auto matically select the maximum refresh   
rate and corresponding Color Matching Pro files. 
  Note: On LCD monitors, unlike CRTs, a fast er refresh rate does not improve   
display quality. Lenovo recommends usin g either 1680x 1050 at a refresh rate of 60 
Hz, or 640x480 at a refresh rate of 60Hz. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Chapter 3. Reference information   3-5 
 
 
 
X:\Monitor Drivers\Windows XP 
14.  Select the  L2251xwD.inf  file and click the Open button. Click the OK button. 
15.  Choose  L2251xwD  and click OK. The  files will be copied   
 
						

							
 
 
 
 
 
 
Getting further help 
If you still can’t solve your problem, please contact the Customer Support Center. 
For more information on contacting th e Customer Support Center, please see 
Appendix A, “Service and Support,” on page A-1. 
 
Service information 
Product numbers 
The product number for your mo nitor is located on the side of the display bezel as   
shown below. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Customer responsibilities 
The warranty does not apply to a prod uct which has been damaged due to   
accident, misuse, abuse, improper insta llation, 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 on to the screen of a CR T 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. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
 
 
Chapter 3. Reference information   3-6 
 
 
 
 
						

							
 
 
 
 
 
 
Service parts 
The following parts are for use by Lenovo service, or Lenovo authorized dealers, 
To support the customer warranty. Parts are for service use only. The table below 
Table 3-3. List of service parts 
FRU (Field 
Replaceable Unit) 
Part number  Description color 
Machine Type 
Model (MTM)
 
45J8746 
Business 
Black 2578-HB6 
45J8748
Business 
Black 
Business  
Black 

 
 
   
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
   
 
3-
7  
 
 
 
 
 
45J8747  L2251x Wide 
L2251x Wide Flat Panel Monitor User’s Guide 
2578-HB6 
2578-HB6 
2578 -HB6 

Business
Black 
shows information for model 2578-HB6.
 
45J8749 L2251x
 Wide 
  FRU Monitor 
  Analog  cable 
 L2251x  Wide Display
Port cable 
x Wide   
   FRU Stand and base   L2251
 
						

							
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 
 
    ©
Copyright Lenovo 2009