HP Hewlett Packard Hewlett Packard Computer Monitor L2045W User Manual

HP L2045w 20" LCD Monitor  
User Guide  
About This Guide  
This guide provides information on setting up the monitor, installing drivers, using the on-screen display  
menu, troubleshooting and technical specifications.  
WARNING! Text set off in this manner indicates that failure to follow directions could result in bodily  
harm or loss of life.  
CAUTION: Text set off in this manner indicates that failure to follow directions could result in damage  
to equipment or loss of information.  
NOTE: Text set off in this manner provides important supplemental information.  
iii  
iv  
About This Guide  
Table of contents  
2 Safety and Maintenance Guidelines  
3 Setting Up the Monitor  
4 Operating the Monitor  
v
Appendix A Troubleshooting  
Appendix B Technical Specifications  
Appendix C Agency Regulatory Notices  
Disposal of Waste Equipment by Users in Private Household in the European  
vi  
viii  
1 Product Features  
HP L2045w  
The flat panel monitor has an active matrix, thin-film transistor (TFT), liquid crystal display (LCD). The  
monitor features include:  
Large 20.1-inch (51 cm) wide-screen display with 1680 × 1050 resolution, plus full-screen support  
for lower resolutions  
Wide viewing angle to allow viewing from a sitting or standing position, or moving side-to-side  
Pivot capability to rotate display to portrait mode  
Tilt, swivel, and height adjustment capabilities  
Grounded aluminum pedestal base designed for stability  
Two sets of VESA 100mm mounting holes for flexible mounting solutions such as the optional HP  
Quick Release  
Removable pedestal base with VESA 40mm mounting holes for mounting an HP Thin Client with  
the optional HP Quick Release  
Video inputs that support DVI digital signal and VGA analog inputs  
One power cable and one VGA signal cable included  
USB 2.0 hub with one upstream (connects to the computer or to a USB hub) and two downstream  
(connects to USB devices) ports  
Accessory rail on monitor to accept optional mounted devices, such as an HP speaker bar  
Rubberized cable management on monitor back and pedestal base  
Plug and play capability if supported by the system  
On-Screen Display (OSD) adjustments in English, Dutch, French, German, Italian, Japanese, and  
Spanish for easy setup and screen optimization  
Software and documentation CD that includes HP Display Assistant, Pivot Pro software, monitor  
driver software, and product documentation  
HP LiteSaver feature to meet requirements for reduced power consumption  
HP L2045w  
1
   
Intelligent Management Asset Control  
Compliant with the following regulated specifications:  
European Union CE Directives  
Swedish MPR II 1990  
Swedish TCO Requirements  
Energy Star  
2
Chapter 1 Product Features  
2 Safety and Maintenance Guidelines  
Important Safety Information  
A power cord is included with the monitor. If another cord is used, use only a power source and  
connection appropriate for this monitor. For information on the correct power cord set to use with the  
monitor, refer to the Power Cord Set Requirements on page 38 section in Appendix C.  
WARNING! To reduce the risk of electric shock or damage to the equipment:  
• Do not disable the power cord grounding feature. The grounding plug is an important safety feature.  
• Plug the power cord in a grounded (earthed) outlet that is easily accessible at all times.  
• Disconnect power from the product by unplugging the power cord from the electrical outlet.  
For your safety, do not place anything on power cords or cables. Arrange them so that no one may  
accidentally step on or trip over them. Do not pull on a cord or cable. When unplugging from the electrical  
outlet, grasp the cord by the plug.  
To reduce the risk of serious injury, read the Safety and Comfort Guide. It describes proper workstation,  
setup, posture, and health and work habits for computer users, and provides important electrical and  
mechanical safety information. This guide is located on the Web at http://www.hp.com/ergo and/or on  
the documentation CD, if one is included with the monitor.  
CAUTION: For the protection of the monitor, as well as the computer, connect all power cords for the  
computer and its peripheral devices (such as a monitor, printer, scanner) to some form of surge  
protection device such as a power strip or Uninterruptible Power Supply (UPS). Not all power strips  
provide surge protection; the power strips must be specifically labeled as having this ability. Use a power  
strip whose manufacturer offers a Damage Replacement Policy so you can replace the equipment, if  
surge protection fails.  
Maintenance Guidelines  
To enhance the performance and extend the life of the monitor:  
Do not open the monitor cabinet or attempt to service this product yourself. Adjust only those  
controls that are covered in the operating instructions. If the monitor is not operating properly or  
has been dropped or damaged, contact an authorized HP dealer, reseller, or service provider.  
Use only a power source and connection appropriate for this monitor, as indicated on the label/  
back plate of the monitor.  
Be sure the total ampere rating of the products connected to the outlet does not exceed the current  
rating of the electrical outlet, and the total ampere rating of the products connected to the cord does  
Important Safety Information  
3
     
not exceed the rating of the cord. Look on the power label to determine the ampere rating (AMPS  
or A) for each device.  
Install the monitor near an outlet that you can easily reach. Disconnect the monitor by grasping the  
plug firmly and pulling it from the outlet. Never disconnect the monitor by pulling the cord.  
Turn the monitor off when not in use. You can substantially increase the life expectancy of the  
monitor by using a screen saver program and turning off the monitor when not in use.  
Slots and openings in the cabinet are provided for ventilation. These openings must not be blocked  
or covered. Never push objects of any kind into cabinet slots or other openings.  
Do not drop the monitor or place it on an unstable surface.  
Do not allow anything to rest on the power cord. Do not walk on the cord.  
Keep the monitor in a well-ventilated area, away from excessive light, heat or moisture.  
When removing the monitor pedestal base, you must lay the monitor face down on a soft area to  
prevent it from getting scratched, defaced, or broken.  
Cleaning the Monitor  
1. Turn off the monitor and the computer.  
2. Unplug the monitor from the wall outlet.  
3. Clean the monitor plastics with a clean cloth dampened with water.  
4. Clean the monitor screen with an antistatic screen cleaner.  
CAUTION: Do not use benzene, thinner, ammonia, or any other volatile substances to clean the  
monitor or the screen. These chemicals may damage the cabinet finish as well as the screen.  
Shipping the Monitor  
Keep the original packing box in a storage area. You may need it later if you move or ship the monitor.  
4
Chapter 2 Safety and Maintenance Guidelines  
   
3 Setting Up the Monitor  
To set up the monitor, ensure that the power is turned off to the monitor, computer system, and other  
attached devices, then follow the instructions below.  
Rear Components  
Figure 3-1 Rear Components  
Component  
Function  
1
USB Downstream  
Connectors  
Connects optional USB devices to the monitor.  
2
USB Upstream  
Connector  
Connects the monitor USB hub to a host USB port/hub.  
3
4
5
6
DVI-D Connector  
Connects the DVI-D signal cable to the monitor.  
Connects the VGA signal cable to the monitor.  
Provides slots for use with cable security locks.  
Connects the AC power cord to the monitor.  
VGA Connector  
Cable Lock Provisions  
AC Power Connector  
Rear Components  
5
   
The monitor features two sets of VESA 100mm mounting holes. Use the top mounting holes to allow  
the display head to be lowered 18.05 mm closer to the table surface, when used in landscape mode.  
Figure 3-2 Two Sets of VESA 100mm Mounting Holes  
Selecting the Signal Connectors and Cables  
The monitor features one DVI-D connector and one VGA connector capable of supporting either digital  
or analog input.  
The video mode is determined by the connector and video cable used.  
For digital operation, use an optional DVI-D signal cable. Connect the DVI-D signal cable to a DVI-  
D connector on the monitor and the other end to the DVI-D connector on the computer.  
For analog operation, use the VGA signal cable provided. Connect the VGA signal cable to a VGA  
connector on the monitor and the other end to the VGA connector on the computer.  
6
Chapter 3 Setting Up the Monitor  
 
The monitor will automatically determine which inputs have valid video signals. The inputs can be  
selected through the On-Screen Display (OSD) feature by pressing the Input Select button on the front  
panel.  
Figure 3-3 Connecting the DVI-D Signal Cable (not included with monitor)  
Figure 3-4 Connecting the VGA Signal Cable  
Connecting the Monitor  
1. Place the monitor in a convenient, well-ventilated location near the computer.  
Connecting the Monitor  
7
 
2. Connect one end of the USB hub cable to the USB connector on the rear panel of the computer  
or to a USB hub, and the other end to the upstream USB connector on the monitor.  
Figure 3-5 Connecting the USB Hub Cable (not included with monitor)  
WARNING! To reduce the risk of electric shock or damage to the equipment:  
• Do not disable the power cord grounding plug. The grounding plug is an important safety feature.  
• Plug the power cord into a grounded (earthed) electrical outlet that is easily accessible at all times.  
• Disconnect power from the equipment by unplugging the power cord from the electrical outlet.  
For your safety, do not place anything on power cords or cables. Arrange them so that no one may  
accidentally step on or trip over them. Do not pull on a cord or cable. When unplugging from the  
electrical outlet, grasp the cord by the plug.  
8
Chapter 3 Setting Up the Monitor  
3. Connect one end of the power cable to the AC power connector on the back of the monitor, and  
the other end to an electrical wall outlet.  
Figure 3-6 Connecting the Power Cable  
4. Place the cables through the cable management channel on the back of the monitor and on the  
pedestal base.  
Figure 3-7 Using the Cable Management Feature  
Connecting the Monitor  
9
Adjusting the Monitor  
1. Tilt the monitor's panel forward or backward to set it to a comfortable eye level.  
Figure 3-8 Tilting the Monitor  
2. Swivel the monitor to the left or right for the best viewing angle.  
Figure 3-9 Swiveling the Monitor  
10 Chapter 3 Setting Up the Monitor  
 
3. Adjust the monitor's height so that it is parallel to your eye height for a comfortable viewing position.  
WARNING! A lock-down/release button on the front of the column prevents the display head from  
sliding up when the monitor is lifted. If the display head is locked in the lowest height position:  
a. Make sure that the monitor is safely positioned on a stable surface.  
b. Gently push down on the display head.  
c. While pushing down the display head, press the lock-down/release button on the front of the  
column.  
d. Guide the display head up to the desired height.  
CAUTION: To prevent damage to the monitor, be sure not to lower it onto objects in the pedestal  
base tray.  
Figure 3-10 Adjusting the Height  
NOTE: The monitor features two sets of VESA 100mm mounting holes. Use the top mounting  
holes to allow the display head to be lowered 18.05 mm closer to the table surface, when used in  
landscape mode.  
Adjusting the Monitor 11  
4. Pivot the monitor from landscape to portrait orientation viewing to adapt to your application.  
Figure 3-11 Pivoting the Monitor  
NOTE: The monitor pivots from landscape clockwise to portrait orientation.  
To view information on the screen in portrait mode, you will need to install the Pivot Pro software  
included on the software and documentation CD.  
Turning on the Monitor  
1. Press the power switch to turn on the computer.  
2. Press the power button on the front of the monitor.  
CAUTION: Burn-in image damage may occur on monitors that display the same static image on  
screen for a prolonged period of time.* To avoid burn-in image damage on the monitor screen, you  
should always activate a screen saver application or turn off the monitor when it is not in use for a  
prolonged period of time. Image retention is a condition that may occur on all LCD screens.  
* A prolonged period of time is 12 or more consecutive hours of non-use.  
12 Chapter 3 Setting Up the Monitor  
 
Connecting USB Devices  
The monitor provides two USB connectors on the rear panel to connect devices such as a digital camera,  
USB keyboard, or USB mouse.  
NOTE: You must connect the USB hub cable from the monitor to the computer or to a USB hub to  
enable the USB 2.0 ports on the monitor. Refer to Step 2 in Connecting the Monitor on page 7.  
Figure 3-12 Connecting USB Devices  
Using the Accessory Rails  
The monitor features accessory rails on the rear that may be used to mount optional devices, such as  
the HP speaker bar, onto the monitor. Refer to the documentation included with the optional device for  
detailed mounting instructions.  
Figure 3-13 Using the Accessory Rails Feature  
Connecting USB Devices 13  
   
Mounting Solutions  
Removing the Monitor Pedestal Base  
You can remove the monitor panel from the pedestal base to mount the panel on a wall, a swing arm,  
or other mounting fixture.  
CAUTION: Before beginning to disassemble the monitor, be sure the monitor is turned off and the  
power and signal cables are both disconnected. If the monitor has a connected audio cable, disconnect  
it.  
1. Disconnect and remove the signal and power cables from the back of the monitor.  
2. Lay the monitor face down on a soft area to prevent it from getting scratched, defaced, or broken.  
3. Remove the four screws that attach the pedestal base to the back of the monitor panel.  
Figure 3-14 Removing the Monitor from the Pedestal Base  
Mounting the Monitor  
An optional HP Quick Release can be attached to the monitor panel. It allows you to quickly and securely  
attach the monitor panel to the mounting fixture.  
1. Remove the monitor panel from the pedestal base. Refer to Removing the Monitor Pedestal  
Base on page 14 steps in the previous section.  
14 Chapter 3 Setting Up the Monitor  
     
2. To mount the monitor to a swing arm, wall or other mounting fixture using the HP Quick Release,  
follow the instructions provided in the documentation that comes with Quick Release.  
Figure 3-15 Mounting the Monitor to a Swing Arm Using Quick Release  
Figure 3-16 Mounting the Monitor to the Wall Using Quick Release  
CAUTION: The Quick Release is designed to support a maximum of up to 24 lbs. (10.9 kg). If  
you are mounting to a wall, HP recommends that you consult with a qualified engineering,  
architectural, or construction professional to determine the appropriate type and quantity of  
mounting fasteners required for the application and to ensure that the mounting solution is properly  
installed to support applied loads.  
Mounting Solutions 15  
3. If mounting the monitor using another manufacturer’s solution, use the screws previously removed  
from the monitor base to mount the display to a swing arm or other mounting fixture. Consult the  
documentation included with the mounting fixture for additional instructions.  
CAUTION: This monitor supports the VESA industry-standard 100mm mounting holes. To attach  
a third-party mounting solution to the monitor, four 4mm, 0.7 pitch, and 10mm long screws are  
required (not provided with the monitor). Longer screws should not be used because they may  
damage the monitor. It is important to verify that the manufacturer’s mounting solution is compliant  
with the VESA standard and is rated to support the weight of the monitor display panel. For best  
performance, it is important to use the power and video cables provided with the monitor.  
Figure 3-17 Mounting the Monitor Using a Third-Party Solution  
16 Chapter 3 Setting Up the Monitor  
Mounting to the Pedestal Base  
An optional HP Quick Release can be attached to the pedestal base. It allows you to quickly and securely  
attach some models of the HP thin client to the monitor.  
To mount an HP thin client to the pedestal base using the HP Quick Release, follow the instructions  
provided in the documentation that comes with Quick Release.  
Figure 3-18 Mounting a Thin Client to the Pedestal Base  
CAUTION: It is important to verify that the weight of the thin client does not affect the stability of the  
monitor.  
Locating the Rating Labels  
The rating labels on the monitor provide the spare part number, product number, and serial number.  
You may need these numbers when contacting HP about the monitor model. The rating labels are  
located on the rear panel of the monitor display head.  
Figure 3-19 Locating the Rating Labels  
Locating the Rating Labels 17  
   
4 Operating the Monitor  
Software and Utilities  
The CD that comes with the monitor contains files you can install on the computer:  
an .INF (Information) file  
an .ICM (Image Color Matching) file  
auto-adjustment pattern utility  
additional software for the monitor model  
Adobe Reader is supplied on this CD and can be installed from the menu.  
NOTE: If the monitor does not include a CD, the .INF and .ICM files can be downloaded from the HP  
monitors support Web site. See Downloading from the Worldwide Web on page 19 in this chapter.  
The Information File  
The .INF file defines monitor resources used by Microsoft Windows operating systems to ensure monitor  
compatibility with the computer’s graphics adapter.  
This monitor is Microsoft Windows Plug and Play compatible and the monitor will work correctly without  
installing the .INF file. Monitor Plug and Play compatibility requires that the computer’s graphic card is  
VESA DDC2b-compliant and that the monitor connects directly to the graphics card. Plug and Play does  
not work through separate BNC type connectors or through distribution buffers/boxes.  
The Image Color Matching File  
The .ICM files are data files that are used in conjunction with graphics programs to provide consistent  
color matching from monitor screen to printer, or from scanner to monitor screen. The .ICM file contains  
a monitor color system profile. This file is activated from within graphics programs that support this  
feature.  
NOTE: The ICM color profile is written in accordance with the International Color Consortium (ICC)  
Profile Format specification.  
18 Chapter 4 Operating the Monitor  
       
Installing the .INF and .ICM Files  
After you determine that you need to update, you can install the .INF and .ICM files from the CD or  
download them.  
Installing from the CD  
To install the .INF and .ICM files on the computer from the CD:  
1. Insert the CD in the computer CD-ROM drive. The CD menu is displayed.  
2. View the Monitor Driver Software Readme file.  
3. Select Install Monitor Driver Software.  
4. Follow the on-screen instructions.  
5. After the software has been installed, restart Windows.  
6. Ensure that the proper resolution and refresh rates appear in the Windows Display control panel.  
NOTE: You may need to install the digitally signed monitor .INF and .ICM files manually from the CD  
in the event of an installation error. Refer to the Monitor Driver Software Readme file on the CD.  
Downloading from the Worldwide Web  
To download the latest version of .INF and .ICM files from the HP monitors support Web site:  
1. Refer to http://www.hp.com/support and select the country region.  
2. Follow the links for the monitor to the support page and download page.  
3. Ensure the system meets the requirements.  
4. Download the software by following the instructions.  
Using the Auto-Adjustment Function  
You can optimize the screen performance for the VGA (analog) input by using the /Auto button on the  
monitor and the auto-adjustment pattern software utility on the CD provided.  
Do not use this procedure if the monitor is using a DVI input. If the monitor is using a VGA (analog)  
input, this procedure can correct the following image quality conditions:  
Fuzzy or unclear focus  
Ghosting, streaking or shadowing effects  
Faint vertical bars  
Thin, horizontal scrolling lines  
An off-center picture  
Installing the .INF and .ICM Files 19  
       
To use the auto-adjustment feature:  
1. Allow the monitor to warm up for 20 minutes before adjusting.  
2. Press the /Auto button on the monitor front panel.  
You can also press the Menu/Select button, then select Auto-Adjustment from the OSD Main  
Menu. Refer to Adjusting the Monitor Settings on page 22 in this chapter.  
If the result is not satisfactory, continue with the procedure.  
3. Insert the CD in the disc drive. The CD menu is displayed.  
4. Select Open Auto-Adjustment Software. The setup test pattern is displayed.  
5. Press the /Auto button on the monitor front panel to produce a stable, centered image.  
6. Press the ESC key or any other key on the keyboard to exit the test pattern.  
20 Chapter 4 Operating the Monitor  
Front Panel Controls  
Table 4-1 Monitor Front Panel Controls  
Control  
Function  
1
2
Menu/Select  
Opens, selects or exits the OSD menu.  
(Minus)/Auto  
Navigates backward through the OSD menu and  
decreases adjustment levels.  
When the OSD menu is inactive, activates the auto  
adjustment feature to optimize the screen image.  
3
+ (Plus)  
Navigates forward through the OSD menu and increases  
adjustment levels.  
4
5
Input Select  
Power LED  
Selects the video input (DVI-D or VGA)  
Fully powered = Green.  
Sleep mode = Amber.  
Sleep Timer mode = Flashing Amber.  
Turns the monitor on or off.  
6
Power  
Front Panel Controls 21  
 
Adjusting the Monitor Settings  
The monitor settings can be adjusted from the On-Screen Display (OSD) menu or from the HP Display  
Assistant utility.  
Using the On-Screen Display Menu  
Use the On-Screen Display (OSD) to adjust the screen image based on your viewing preferences. To  
access the OSD, do the following:  
1. If the monitor is not already on, press the Power button to turn on the monitor.  
2. To access the OSD Menu, press the Menu/Select button on the monitor’s front panel.  
3. To navigate through the OSD Menu, press the + (Plus) button on the monitor’s front panel to scroll  
up, or the (Minus)/Auto button to scroll in reverse.  
4. To select an item from the OSD Menu, use the + or buttons to scroll to and highlight your selection,  
then press the Menu/Select button to select that function.  
5. Adjust the item using the + or buttons on the front panel to adjust the scale.  
6. After adjusting the function, select Save and Return, or Cancel if you don’t want to save the setting,  
then select Exit from the Main Menu.  
NOTE: If the buttons remain untouched for 10 seconds while displaying a menu, new adjustments will  
be discarded and the settings will revert to previous settings and exit the menu.  
OSD Menu Selections  
The following table lists the On-Screen Display (OSD) menu selections and their functional descriptions.  
After changing an OSD menu item, and if the menu screen has these options, you may choose to:  
Cancel - to return to the previous menu level.  
Save and Return - to save all changes and return to the OSD Main Menu screen. This Save and  
Return option is only active if you change a menu item.  
Reset - to change back to the previous setting.  
22 Chapter 4 Operating the Monitor  
     
Table 4-2 OSD Menu  
Icon  
Main Menu  
Submenu  
Description  
Brightness  
Adjusts the brightness level of the screen. The factory default  
range is 90.  
Contrast  
Adjustable scale  
Adjusts the contrast level of the screen. The factory default range  
is 80.  
Image Control  
Adjusts the screen image.  
Auto Adjustment  
Horizontal Position  
Vertical Position  
Clock  
Automatically adjusts the screen image.  
Adjusts the position of the screen image left and right.  
Adjusts the position of the screen image up and down.  
Minimizes any vertical bars or strips visible on the screen  
background. Adjusting the Clock will also change the horizontal  
screen image.  
Clock Phase  
Adjusts the focus of the display. This adjustment allows you to  
remove any horizontal noise and clear or sharpen the image of  
characters.  
Color  
Selects the screen color. The factory default is 6500 K.  
9300 K  
Changes to slightly blueish white.  
Changes to slightly reddish white.  
Selects and adjusts your own color scales:  
6500 K  
Custom Color  
R - sets your own red color levels  
G - sets your own green color levels  
B - sets your own blue color levels  
sRGB  
Sets your screen colors to adapt to the color standards used in the  
image technology industry.  
Language  
Selects the language in which the OSD menu is displayed. The  
factory default is English.  
Management  
Selects the power management features of the monitor.  
Enables the power saving feature. Select:  
Power Saver  
On  
Off  
The factory default is On.  
Power On Recall  
Restores power to the monitor following an unexpected removal  
of power. Select:  
On  
Off  
The factory default is On.  
Adjusting the Monitor Settings 23  
Table 4-2 OSD Menu (continued)  
Icon  
Main Menu  
Submenu  
Description  
Mode Display  
Displays the resolution, refresh rate and frequency information on  
the screen each time the OSD Main Menu is accessed. Select:  
On  
Off  
The factory default is Off.  
Power-On Status  
Display  
Displays the operating status of the monitor each time the monitor  
is powered on. Select the location to display the status to:  
Top  
Middle  
Bottom  
Off  
The factory default is Top.  
DDC/CI Support  
Allows the computer to control some OSD menu features such as  
brightness, contrast and color temperature. Set to:  
On  
Off  
The factory default is On.  
Sleep Timer  
Provides the timer adjustment menu options:  
Set Current Time - sets the current time in hours and minutes  
Set Sleep Time - sets the time you want to place the monitor  
in sleep mode  
Set on Time - sets the time you want the monitor to wake up  
from sleep mode  
Timer - sets the Sleep Timer feature On or Off. The default  
setting is Off  
Sleep Now - immediately sets the monitor to enter sleep  
mode  
OSD Control  
Adjusts the position of the OSD menu on the screen.  
Horizontal Position  
Vertical Position  
OSD Timeout  
Changes the viewing position of the OSD menu to the left or right  
area of the screen. The factory default range is 50.  
Changes the viewing position of the OSD menu to the top or  
bottom area of the screen. The factory default range is 50.  
Sets the time duration in seconds that the OSD is visible after the  
last button is pressed. The factory default is 30 seconds.  
OSD Transparency  
Adjust to view the background information through the OSD.  
Selects and displays important information about the monitor.  
Provides the current input video mode.  
Information  
Current Settings  
24 Chapter 4 Operating the Monitor  
Table 4-2 OSD Menu (continued)  
Icon  
Main Menu  
Submenu  
Description  
Recommended Settings Provides the recommended resolution mode and refresh rate for  
the monitor.  
Serial Number  
Reports the serial number of the monitor. The serial number is  
needed if contacting HP technical support.  
Version  
Reports the firmware version of the monitor.  
Reports the total hours of backlight operation.  
Backlight hours  
Video Input  
Control  
Selects the default or primary video input signal when the monitor  
is connected to two active and valid video sources. The monitor  
automatically determines the video format. The default input  
selection is DVI-D.  
DVI-D  
VGA  
Selects DVI-D input.  
Selects VGA input.  
Disable Input Auto-  
Switching  
Keeps the monitor's video input selection at its current setting.  
This menu selection is visible if the video input control is set to  
Enable Input Auto-Switching.  
Enable Input Auto-  
Switching  
Automatically returns the monitor's video input to the default auto-  
switching mode. This menu selection is visible if the video input  
control is set to Disable Input Auto-Switching.  
Factory Reset  
Exit  
Returns all OSD menu settings to the factory default setting,  
except the Language setting.  
Exits the OSD menu screen.  
Adjusting the Monitor Settings 25  
Optimizing Digital Conversion  
This monitor contains advanced circuitry that allows the flat panel screen to function like a standard  
monitor. Two controls in the on-screen display can be adjusted to improve image performance: Clock  
and Clock Phase.  
NOTE: The Clock and Clock Phase controls are adjustable only when using an analog input. These  
controls are not adjustable for digital inputs.  
The Clock must first be set correctly since the Clock Phase settings are dependent on the main Clock  
setting. Use these controls only when the auto-adjustment function does not provide a satisfactory  
image.  
Clock - Increases/decreases the value to minimize any vertical bars or stripes visible on the screen  
background.  
Clock Phase - Increases/decreases the value to minimize video distortion or video jitter.  
NOTE: When using the controls, you will obtain the best results by using the auto-adjustment pattern  
software utility provided on the CD.  
When adjusting the Clock and Clock Phase values, if the monitor images become distorted, continue  
adjusting the values until the distortion disappears. To restore the factory settings, select Yes from the  
Factory Reset menu in the on-screen display.  
Using the HP Display Assistant Utility  
HP Display Assistant, included on the software and documentation CD, is a software utility that guides  
you through the tuning process with easy to understand instructions and background patterns designed  
for each monitor control. It provides:  
Accurate screen calibration through the use of step-by-step instruction Wizards to obtain the best  
overall image quality  
Software control of the monitor image and color settings to eliminate dependence on the monitor’s  
front panel buttons and On-Screen Display (OSD) menu  
Defined preset display settings for each individual user in a multi-user environment  
Multiple preset display settings for a single user based on content and ambient lighting  
Asset Management and Power Management capabilities that include remote control for individual  
or a group of displays on the domain from a centralized console application  
The HP Display Assistant Utility has two modes of operation: Wizard and OSD mode. The preferred  
method of use is Wizard mode, which takes you through a step-by-step process to accurately calibrate  
the monitor. This method relies on a sequence of steps that will obtain the best display results when  
completed.  
NOTE: Refer to the HP Display Assistant user guide for additional information about the software.  
26 Chapter 4 Operating the Monitor  
   
Identifying Monitor Conditions  
Special messages will appear on the monitor screen when identifying the following monitor conditions:  
Input Signal Out of Range - Change resolution setting to 1680 × 1050 – 75Hz - Indicates the  
monitor does not support the input signal because the resolution and/or refresh rate are set higher  
than the monitor supports  
No Input Signal - Indicates the monitor is not receiving a video signal from the PC on the monitor  
video input connector. Check to determine if the PC or input signal source is off or in the power  
saving mode.  
Multiple Inputs are Active - Use the OSD to select the desired video input - Indicates the  
monitor is connected to two video inputs. The monitor is trying to display both inputs, but after 10  
seconds the monitor uses the default signal input.  
Auto Adjustment is in Progress - Indicates the auto-adjustment function is active  
Monitor Going to Sleep - Indicates the screen display is entering a sleep mode  
Check Video Cable - Indicates the video cable is not properly connected to the computer  
OSD Lock - The OSD can be enabled or disabled by pressing and holding the Menu button on the  
front panel for 10 seconds. If the OSD is locked, the warning message OSD Lock-Out is displayed  
for ten seconds.  
If the OSD is locked, press and hold the Menu button for 10 seconds to unlock the OSD.  
If the OSD is unlocked, press and hold the Menu button for 10 seconds to lock the OSD.  
Sleep Timer Mode  
The Sleep Timer mode is an energy-saving feature that enables you to set a time for the monitor to  
power on and off at the same time every day. This also extends the life of the backlight bulbs in the  
monitor. The Sleep Timer has five settings:  
Set Current Time  
Set Sleep Time  
Set On Time  
Timer: On/Off  
Sleep Now  
To set the timer:  
1. Press the Menu button on the monitor front panel to display the Advanced Menu.  
2. Scroll down and highlight Management.  
3. Press the Menu button to select Management.  
4. Scroll down and highlight and select Sleep Timer > Set Current Time.  
Identifying Monitor Conditions 27  
   
NOTE: You must set the current local time before you reset the time for Sleep Time or On  
Time. Note that the time is displayed in a 24–hour clock format. For example, 1:15 p.m. is displayed  
as 13 hours 15 minutes.  
5. Press the Menu button once to enter the adjustment mode for hours.  
6. Press the (Minus) or + (Plus) button to adjust the hour.  
7. Press the Menu button again to enter the time for minutes.  
8. Press the (Minus) or + (Plus) button to adjust the minutes.  
9. Press the Menu button to lock in the time chosen.  
10. After setting the current time, the highlight automatically skips to Set Sleep Time hours. Repeat  
steps 6 through 9 to set Sleep Time.  
11. If you do not want to set Sleep Time, press the Menu button twice, then select Save and  
Return to exit the menu.  
12. After setting Sleep Time, the highlight automatically skips to Set On Time hours. Repeat steps 6  
through 9 to set On Time.  
13. Set the Timer mode to On to activate the Sleep Timer settings.  
14. When you are finished, select Save and Return to exit the menu.  
The fifth selection, Sleep Now, turns the monitor backlights off immediately and stays in sleep mode  
until the next On Time activates or a monitor button is pressed.  
HP Display LiteSaver  
HP Display LiteSaver is a software application, available on the CD, that increases monitor life and  
saves energy. It allows you to place the monitor into its low power sleep mode at predefined times by  
shutting down or reducing power to most internal circuits. This helps protect the LCD panel against  
image retention. Image retention can occur when the monitor is left on while displaying the same image  
for an extended period of time, leaving a shadow of the image on the screen.  
Installing the HP Display LiteSaver Software  
1. Insert the CD in the computer CD-ROM Drive. The CD menu is displayed.  
2. Select Install HP Display LiteSaver Software.  
3. After installing the software, click the HP Display LiteSaver icon in the Windows system tray or  
right-click the icon and select Configure from the pop-up menu.  
4. Select the following options to configure the HP Display LiteSaver features:  
Table 4-3 HP Display LiteSaver Configuration Options  
Select This Option  
To Do This  
Enable Display LiteSaver  
Enables the HP Display LiteSaver functions; deselect to disable the HP Display  
LiteSaver  
Display Off  
Sets the time when the monitor automatically turns off. This does not affect screen  
saver operation, which has priority over the HP Display LiteSaver.  
28 Chapter 4 Operating the Monitor  
   
Table 4-3 HP Display LiteSaver Configuration Options (continued)  
Select This Option  
To Do This  
Display On  
Sets the time when the monitor automatically turns on. This does not affect screen  
saver operation, which has priority over the HP Display LiteSaver.  
Activity Extension  
Sets the time in minutes before the monitor turns off if there is any keyboard or mouse  
activity after the Display Off time is reached. If the keyboard or mouse is used, then  
HP Display LiteSaver waits until the set amount of time before turning the display  
off again. Set to 0 to disable. If disabled, the monitor will turn off as soon as the  
Display Off time is reached, regardless of keyboard or mouse activity.  
Show 1 minute Display Off Notice  
Displays a popup message in the system tray 1 minute before the monitor is turned  
off by HP Display LiteSaver  
Status  
OK  
Shows the time until the monitor is next due to be turned off by HP Display LiteSaver  
Stores the current settings and minimizes HP Display LiteSaver to the System Tray  
Cancel  
Restores the previous settings and minimizes HP Display LiteSaver to the System  
Tray. HP Display LiteSaver will continue to run.  
Help  
Exit  
Opens the online help file  
Exits and closes the HP Display LiteSaver. It will no longer control the monitor power  
until it is next run.  
View HP Display LiteSaver Readme on the CD for additional information on how to configure HP Display  
LiteSaver.  
sRGB Support  
The monitor is designed to support sRGB for color management, which adapts to the color standards  
used in the image technology industry.  
To take advantage of the sRGB support, you need to change the monitor’s color temperature to sRGB  
and install the sRGB color profile (ICM) file.  
NOTE: The sRGB color temperature preset improves the color accuracy of sRGB images on the  
computer monitor, but some color variation may still occur.  
Changing the Color Temperature  
1. Press the Menu button on the front panel of the monitor to launch the Main Menu of the OSD.  
2. Select Advanced Menu to access all options in the Main Menu.  
3. Select Color to display the Color Temperature menu.  
4. Select sRGB.  
5. Select Save and Return to exit the menu.  
Installing the sRGB ICM File for Microsoft Windows 2000 and Windows XP  
NOTE: To complete the following procedure, you must be logged in as an administrator or a member  
of the administrator’s group. If the computer is connected to a network, network policy settings may  
prevent you from completing this procedure. The sRGB ICM file does not support Windows 95 and  
Windows NT operating systems.  
sRGB Support 29  
     
1. Click the Display icon in the Control Panel.  
2. In the Display Properties windows, select the Settings tab, then click the Advanced button.  
3. Select the Color Management tab, then click the Add button to open the Add Profile  
Association dialog box.  
4. Select the sRGB Color Space Profile.icm file, then click the Add button  
5. To activate a color profile for the monitor, you must set it as the Default Monitor Profile. Select  
sRGB Color Space Profile, then click Set as Default button.  
6. Click Apply or OK.  
Installing the sRGB ICM File for Microsoft Windows Vista  
1. Click Appearance and Personalization icon in the Control Panel.  
2. Click Personalization.  
3. Click Display Settings.  
4. Click the Advanced Settings button.  
5. Click the Color Management tab, then click the Color Management button.  
6. Click the Advanced tab, then click the Change System Defaults button.  
7. On the Devices tab, click the Add button.  
8. Select the sRGB Color Space Profile.icm file, then click the OK button  
9. To activate a color profile for the monitor, you must set it as the Default Monitor Profile. Select  
sRGB Color Space Profile, then click the Set as Default button.  
30 Chapter 4 Operating the Monitor  
 
A Troubleshooting  
Solving Common Problems  
The following table lists possible problems, the possible cause of each problem, and the recommended  
solutions.  
Problem  
Possible Cause  
Solution  
Screen is blank.  
Power cord is disconnected.  
Connect the power cord.  
Power switch on front panel of the Press the front panel power button.  
monitor is turned off.  
Master power switch on rear panel Turn the master power switch to On.  
of the monitor is turned Off.  
Video cable is improperly  
connected.  
Connect the video cable properly. Refer to Chapter 3,  
Setting Up the Monitor on page 5 for more information.  
Screen blanking is active.  
Press any key on the keyboard or move the mouse to  
inactivate the screen blanking utility.  
Image appears blurred,  
indistinct, or too dark.  
Brightness and contrast are too low. Press the /Auto button on the front panel. If this does not  
correct the image, press the Menu button to open the Basic  
OSD Menu, and adjust the brightness and contrast scales  
as needed.  
Image is not centered  
Position may need adjustment.  
Press the Menu button to access the OSD menu. Select  
Image Control/Horizontal Position or Vertical Position to  
adjust the horizontal or vertical position of the image.  
Check Video Cable is  
displayed on screen.  
Monitor video cable is  
disconnected.  
Connect the DVI-D signal cable to the DVI-D connector on  
the computer, or the VGA signal cable to the VGA  
connector on the computer. Be sure that the computer  
power is off while connecting the video cable.  
Out of Range. Set Monitor Video resolution and/or refresh rate Restart the computer and enter Safe Mode. Change the  
to 1680 × 1050 @ 75Hz is  
are set higher than what the monitor settings to a supported setting (see Table B-2 L2045w  
displayed on screen.  
supports.  
computer so that the new settings take effect.  
HP Display LiteSaver  
The Activity Extension time has not The default Activity Extension value is set to 10 minutes.  
doesn't turn off the monitor elapsed.  
screen.  
The HP Display LiteSaver will wait to detect no input or  
movement from the keyboard or mouse for 10 consecutive  
minutes after the Display Off time has passed, before the  
monitor enters into low-power mode. For example, if the  
Display Off time is set to 5 minutes from the current time  
and the Activity Extension is set to 10 minutes, the HP  
Display LiteSaver will not actually turn off the display until  
10 minutes of inactivity has elapsed, even though the  
Display Off time is 5 minutes from now.  
Solving Common Problems 31  
   
Problem  
Possible Cause  
Solution  
The HP Display LiteSaver may not Confirm that the HP Display LiteSaver is compatible with  
be compatible with the computer  
system. Some notebook computers  
are not compatible and the monitor  
power can not be controlled.  
the system.  
1. Right-click on the HP Display LiteSaver icon in the  
system tray.  
2. Select Power Off Display from the menu.  
The monitor screen should turn off if the system is  
compatible. To turn the monitor back on, wait 5 seconds  
and move the mouse.  
NOTE: If the monitor did not turn off, then the computer  
graphics driver is not compatible with the HP Display  
LiteSaver software.  
The monitor is off but it did The monitor's power saving control Check the monitor's OSD menu setting for power saving  
not seem to enter into a low- is disabled.  
power sleep mode.  
enable/disable controls. The control should be set to  
enable to allow the monitor to enter into low-power modes.  
Using the Worldwide Web  
For the online access to technical support information, self-solve tools, online assistance, community  
forums of IT experts, broad mutlivendor knowledge base, monitoring and diagnostic tools, go to  
Preparing to Call Technical Support  
If you cannot solve a problem using the trouble shooting tips in this section, you may need to call  
technical support. Have the following information available when you call:  
The monitor  
Monitor model number  
Serial number for the monitor  
Purchase date on invoice  
Conditions under which the problem occurred  
Error messages received  
Hardware configuration  
Hardware and software you are using  
32 Appendix A Troubleshooting  
   
B Technical Specifications  
NOTE: All performance specifications are provided by the component manufacturers. Performance  
specifications represent the highest specification of all HP's component manufacturers' typical level  
specifications for performance and actual performance may vary either higher or lower.  
L2045w Model  
Table B-1 L2045w Specifications  
Display  
20.1 inches  
TFT LCD  
51 cm  
51 cm  
Type  
Viewable Image Size  
20–inch diagonal  
5 to 30°  
Tilt  
Swivel  
45 to 45°  
20.3 lbs.  
Maximum Weight (Unpacked)  
9.20 kg  
Dimensions (include pedestal base)  
16.7 inches  
425 mm  
220 mm  
443 mm  
Height  
8.7 inches  
Depth  
17.4 inches  
Width  
Maximum Graphic Resolution  
1680 × 1050 (75 Hz) analog input  
1680 × 1050 (60 Hz) digital input  
720 × 400  
Text Mode  
Dot Pitch  
0.258 (H) × 0.258 (W) mm  
30 to 94 kHz  
Horizontal Frequency  
Vertical Refresh Rate  
Environmental Requirements Temperature  
48 to 85 Hz  
41 to 95° F  
5 to 35° C  
Operating Temperature  
Storage Temperature  
Relative Humidity  
Power Source  
41 to 140° F  
20 to 80%  
20 to +60° C  
100 - 240 VAC, 50/60 Hz  
Altitude:  
L2045w Model 33  
   
Table B-1 L2045w Specifications (continued)  
Operating  
0 to 12,000 feet  
0 to 3657.6 m  
0 to 12192 m  
Storage  
0 to 40,000 feet  
Power Consumption (maximum)  
Input Terminal  
<75 watts  
One DVI-D connector, cable not included.  
One VGA connector with cable included.  
Recognizing Preset Display Resolutions  
The display resolutions listed below are the most commonly used modes and are set as factory defaults.  
This monitor automatically recognized these preset modes and they will appear properly sized and  
centered on the screen.  
Table B-2 L2045w Model Factory Preset Modes  
Preset  
Pixel Format Horz Freq  
(kHz)  
Horz Polarity Vert Freq  
(Hz)  
Vert Polarity Pixel Clk  
(MHz)  
Source  
1
640 × 480  
640 × 480  
640 × 480  
720 × 400  
800 × 600  
800 × 600  
800 x 600  
832 x 624  
1024 × 768  
1024 × 768  
1024 x 768  
1152 x 870  
1152 x 900  
31.469  
37.861  
37.500  
31.469  
37.879  
48.077  
46.875  
49.726  
48.363  
56.476  
60.023  
68.680  
71.710  
+
+
+
±
+
+
59.940  
72.809  
75.000  
70.087  
60.317  
72.188  
75.000  
74.551  
60.004  
70.069  
75.029  
75.060  
76.050  
60.020  
59.954  
74.892  
+
+
+
+
±
+
+
+
+
25.175  
31.500  
31.500  
28.322  
40.000  
50.000  
49.500  
57.284  
65.000  
75.000  
78.750  
100.000  
105.561  
108.000  
146.250  
187.000  
VGA  
2
VESA  
VESA  
VGA  
3
4
5
VESA  
VESA  
VESA  
Mac  
6
7
8
9
VESA  
VESA  
VESA  
Mac  
10  
11  
12  
13  
14  
15  
16*  
Sun  
1280 × 1024 63.980  
VESA  
VESA  
VESA  
1680 x 1050  
1680 x 1050  
65.290  
82.306  
* For analog inputs only.  
Entering User Modes  
The video controller signal may occasionally call for a mode that is not preset if:  
You are not using a standard graphics adapter.  
You are not using a preset mode.  
34 Appendix B Technical Specifications  
     
It this occurs, you may need to readjust the parameters of the monitor screen by using the on-screen  
display or HP Display Assistant software. Your changes can be made to any or all of these modes and  
saved in memory. The monitor automatically stores the new setting, then recognized the new mode just  
as it does a preset mode. In addition to the 18 factory present modes for the L2045w model, there are  
four user modes that can be entered and stored.  
Energy Saver Feature  
When the monitor is in its normal operating mode, the monitor uses less than 75 watts of power and the  
Power light is green.  
The monitor also supports a reduced power state. The reduced power state will be entered into if the  
monitor detects the absence of either the horizontal sync signal and/or the vertical sync signal. Upon  
detecting the absence of these signals, the monitor screen is blanked, the backlight is turned off, and  
the power light is turned amber. When the monitor is in the reduced power state, the monitor will utilize  
less than 2 watts of power. There is a brief warm up period before the monitor will return to its normal  
operating mode.  
Refer to the computer manual for instructions on setting energy saver features (sometimes called power  
management features).  
NOTE: The above power saver feature only works when connected to computers that have energy  
saver features.  
By selecting the settings in the monitor's Energy Saver utility, you can also program the monitor to enter  
into the reduced poser state at a predetermined time. When the monitor's Energy Saver utility causes  
the monitor to enter the reduced power state, the power light blinks amber.  
Energy Saver Feature 35  
 
C Agency Regulatory Notices  
Federal Communications Commission Notice  
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant  
to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful  
interference in a residential installation. This equipment generates, uses, and can radiate radio  
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful  
interference to radio communications. However, there is no guarantee that interference will not occur  
in a particular installation. If this equipment does cause harmful interference to radio or television  
reception, which can be determined by turning the equipment off and on, the user is encouraged to try  
to correct the interference by one or more of the following measures:  
Reorient or relocate the receiving antenna.  
Increase the separation between the equipment and the receiver.  
Connect the equipment into an outlet on a circuit different from that to which the receiver is  
connected.  
Consult the dealer or an experienced radio or television technician for help.  
Modifications  
The FCC requires the user to be notified that any changes or modifications made to this device that are  
not expressly approved by Hewlett Packard Company may void the user's authority to operate the  
equipment.  
Cables  
Connections to this device must be made with shielded cables with metallic RFI/EMI connector hoods  
to maintain compliance with FCC Rules and Regulations.  
Declaration of Conformity for Products Marked with the  
FCC Logo (United States Only)  
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions:  
1. This device may not cause harmful interference.  
2. This device must accept any interference received, including interference that may cause  
undesired operation.  
For questions regarding the product, contact:  
36 Appendix C Agency Regulatory Notices  
         
Hewlett Packard Company  
P. O. Box 692000, Mail Stop 530113  
Houston, Texas 77269-2000  
Or, call 1-800-HP-INVENT (1-800 474-6836)  
For questions regarding this FCC declaration, contact:  
Hewlett Packard Company  
P. O. Box 692000, Mail Stop 510101  
Houston, Texas 77269-2000  
Or, call (281) 514-3333  
To identify this product, refer to the Part, Series, or Model number found on the product.  
Canadian Notice  
This Class B digital apparatus meets all requirements of the Canadian Interference-Causing Equipment  
Regulations.  
Avis Canadien  
Cet appareil numérique de la classe B respecte toutes les exigences du Règlement sur le matériel  
brouilleur du Canada.  
European Union Regulatory Notice  
This product complies with the following EU Directives:  
Low Voltage Directive 2006/95/EC  
EMC Directive 2004/108/EC  
Compliance with these directives implies conformity to applicable harmonized European standards  
(European Norms) which are listed on the EU Declaration of Conformity issued by Hewlett-Packard for  
this product or product family.  
This compliance is indicated by the following conformity marking placed on the product:  
This marking is valid for non-Telecom  
This marking is valid for EU non-  
products and EU harmonized Telecom harmonized Telecom products.  
products (e.g. Bluetooth)  
*Notified body number (used only if  
applicable - refer to the product label).  
Canadian Notice 37  
     
Hewlett-Packard GmbH, HQ-TRE, Herrenberger Strasse 140, D-71034 Böblingen, Germany  
German Ergonomics Notice  
HP products which bear the “GS” approval mark, when forming part of a system comprising HP brand  
computers, keyboards and monitors that bear the “GS” approval mark, meet the applicable ergonomic  
requirements. The installation guides included with the products provide configuration information.  
Japanese Notice  
Korean Notice  
Power Cord Set Requirements  
The monitor power supply is provided with Automatic Line Switching (ALS). This feature allows the  
monitor to operate on input voltages between 100–120V or 200–240V.  
The power cord set (flexible cord or wall plug) received with the monitor meets the requirements for use  
in the country where you purchased the equipment.  
If you need to obtain a power cord for a different country, you should purchase a power cord that is  
approved for use in that country.  
The power cord must be rated for the product and for the voltage and current marked on the product's  
electrical ratings label. The voltage and current rating of the cord should be greater than the voltage and  
current rating marked on the product. In addition, the cross-sectional area of the wire must be a minimum  
of 0.75 mm² or 18 AWG, and the length of the cord must be between 6 feet (1.8 m) and 12 feet (3.6 m).  
If you have questions about the type of power cord to use, contact an authorized HP service provider.  
A power cord should be routed so that it is not likely to be walked on or pinched by items placed upon  
it or against it. Particular attention should be paid to the plug, electrical outlet, and the point where the  
cord exits from the product.  
Japanese Power Cord Requirements  
For use in Japan, use only the power cord received with this product.  
38 Appendix C Agency Regulatory Notices  
         
CAUTION: Do not use the power cord received with this product on any other products.  
Product Environmental Notices  
Materials Disposal  
This HP product contains mercury in the fluorescent lamp in the display LCD that might require special  
handling at end-of-life.  
Disposal of this material can be regulated because of environmental considerations. For disposal or  
recycling information, contact the local authorities or the Electronic Industries Alliance (EIA)  
Disposal of Waste Equipment by Users in Private Household in the  
European Union  
This symbol on the product or on its packaging indicates that this product must not be disposed of with  
your household waste. Instead, it is your responsibility to dispose of your waste equipment by handing  
it over to a designated collection point for the recycling or waste electrical and electronic equipment.  
The separate collection and recycling of the waste equipment at the time of disposal will help to conserve  
natural resources and ensure that it is recycled in a manner that protects human health and the  
environment. For more information about where you can drop off your waste equipment for recycling,  
please contact the local city office, the household waste disposal service or the shop where you  
purchased the product.  
Chemical Substances  
HP is committed to providing our customers with information about the chemical substances in our  
products as needed to comply with legal requirements such as REACH (Regulation EC No 1907/2006  
of the European Parliament and the Council). A chemical information report for this product can be found  
Restriction of Hazardous Substances (RoHS)  
A Japanese regulatory requirement, defined by specification JIS C 0950, 2005, mandates that  
manufacturers provide Material Content Declarations for certain categories of electronic products  
offered for sale after July 1, 2006. To view the JIS C 0950 material declaration for this product, visit  
Product Environmental Notices 39  
         
40 Appendix C Agency Regulatory Notices  
D LCD Monitor Quality and Pixel Policy  
The TFT monitor uses high-precision technology, manufactured according to HP standards, to  
guarantee trouble-free performance. Nevertheless, the display may have cosmetic imperfections that  
appear as small bright or dark spots. This is common to all LCD displays used in products supplied by  
all vendors and is not specific to the HP LCD. These imperfections are caused by one or more defective  
pixels or sub-pixels.  
A pixel consists of one red, one green, and one blue sub-pixel.  
A defective whole pixel is always turned on (a bright spot on a dark background), or it is always off  
(a dark spot on a bright background). The first is the more visible of the two.  
A defective sub-pixel (dot defect) is less visible than a defective whole pixel and is small and only  
visible on a specific background.  
To locate defective pixels, the monitor should be viewed under normal operating conditions, in normal  
operating mode at a supported resolution and refresh rate, from a distance of approximately 50 cm (20  
in).  
HP expects that, over time, the industry will continue to improve its ability to produce LCDs with fewer  
cosmetic imperfections and HP will adjust guidelines as improvements are made.  
41  
 

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