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Question posted by sscheurer on November 13th, 2012

Hp Photosmart 2540 Printer

My HP photosmart Series 2540 printer will not recognize my print cartridge. I have been printing and everythings has worked fine until today --- It also says to close a door -- there are no doors to close. Please help

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Related HP L1940T Manual Pages

Understanding pixel defects in TFT flat panel monitors - Page 1

Understanding pixel defects in LCD monitors Bob Myers Displays Business Unit Last revised: July 1, 2009 Introduction...2 Executive summary 2 Understanding TFT-LCD technology 3 How LCDs work 3 Why TFTs? ...3 Understanding pixel defects 4 How pixel defects occur 4 How to spot a sub-pixel defect 5 HP pixel-defect standards 5 HP specifications 5 International standards (ISO-9241 6 Defect type...

Understanding pixel defects in TFT flat panel monitors - Page 2

...HP doing about them, this white paper explains:  What are viewed under special conditions, or unless they work...some LCD monitors may produce a few sub-pixel defects per screen. In this important to me? Introduction Liquid crystal display (LCD) technology... flaws, HP has developed a set of pixel defects. 2 HP has conducted a detailed study of color and detail that today's high-...

Understanding pixel defects in TFT flat panel monitors - Page 3

..., passive-matrix drive system. 3 Before long, the technology was being applied to everything from the rear, and so create the image. Because of the display, and ...LCDs work A liquid crystal is driven such that will pass through a translucent plastic diffuser layer, which also exhibits some properties-such as an ordered arrangement of all HP LCD monitors as well as an active-matrix LCD...

Understanding pixel defects in TFT flat panel monitors - Page 5

... find it has been tightening those specifications over time. To locate defective sub-pixels, the monitor should be viewed under which can be refined, but will always represent the best panel quality standards which HP scans for HP monitors manufactured before May 2009: Bright sub-pixel defects: Dark sub-pixel defects: Total sub-pixel...

Understanding pixel defects in TFT flat panel monitors - Page 6

...61630; 50 single or double sub-pixels stuck on the number of the HP monitor. International standards (ISO-9241) The International Standards Organization (ISO) has published its own set ... a few pixel defects that fall within the ISO 9241 set of specifications for HP monitors manufactured in flat panel monitors:  Class 0 panels are shipping with only a single sub-pixel defect...

Understanding pixel defects in TFT flat panel monitors - Page 9

... best-of-breed products-and our line of LCD monitors is a set by the IEEE 1680 American National Standard for HP products. Designed with hundreds of third-party devices in a variety of networked environments to LCD-TFT displays, fewer pixel defects mean better quality. The HP L1950g and HP L2245wg are designated EPEAT Gold, which indicates...

Understanding pixel defects in TFT flat panel monitors - Page 10

... countries around the world who provide an impressive depth of service and support at the local level. HP service and support HP LCD monitors are also available. Additional support is still in warranty. In the United States, HP offers toll-free, round-the-clock telephone hotline support (terms and conditions may vary by region). Development...

HP Display Assistant User Guide - Page 5

... adjust it for multiple users or a single user working under various environmental conditions. To get the best image on your environment. The utility guides you through the monitor adjustment process with your monitor into a CD or DVD drive on a monitor, you correctly adjust the monitor settings. HP Display Assistant allows for each adjustment so that can...

HP Display Assistant User Guide - Page 6

... Assistant. 3. Click the Yes button to highlight it. 4. Follow the steps below to quickly adjust any monitor setting. 2 Chapter 1 Overview Uninstalling HP Display Assistant HP Display Assistant can be uninstalled from the Start menu). 2. In the Control Panel, click the Add/Remove Programs icon. 3. This method is Wizard mode, which ...

HP Display Assistant User Guide - Page 17

... colors. The process goes through an interactive series of targets used to display images from the square. Click the Color Calibration button on your LCD. 1. NOTE: Before proceeding, it is ... specifies a color matching technique to provide consistent monitor and output device color. HP Display Assistant color calibration is done through a series of the outer color ring until the tint ...

HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced) - Page 1

User Guide HP L1940T 19" LCD Monitor Document Part Number: 407540-001 January 2006 This guide provides information on setting up the monitor, installing drivers, using the on-screen display menu, troubleshooting and technical specifications. Enhanced for Accessibility

HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced) - Page 2

... herein is protected by copyright. and other countries. HP shall not be liable for HP products and services are trademarks or registered trademarks of Intel Corporation in damage to equipment or loss of this document may be construed as constituting an additional warranty. User Guide HP L1940T 19" LCD Monitor First Edition (January 2006) Document Part Number...

HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced) - Page 4

... 4-13 Installing the HP Display LiteSaver Software. . . . . 4-13 sRGB Support 4-15 Changing the Color Temperature 4-15 Installing the sRGB ICM File for Microsoft Windows 2000 and Windows XP 4-16 A Troubleshooting Solving Common Problems A-1 Using the Worldwide Web A-3 Preparing to call Technical Support A-3 B Technical Specifications L1940T 19" LCD Monitor B-1 Recognizing Preset Display...

HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced) - Page 5

Contents Disposal of Waste Equipment by Users in Private Household in the European Union C-4 Japanese Notice C-5 Korean Notice C-5 ENERGY STAR Compliance C-5 Power Cord Set Requirements C-5 Japanese Power Cord Requirements C-6 D LCD Monitor Quality and Pixel Policy User Guide v

HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced) - Page 7

...1-1 The monitor features include: ■ 19-inch/48...adjustment capabilities. ■ Easily removable base for flexible panel mounting with the optional HP Compaq Quick Release or other panel mounting solutions. ■ Video signal inputs ... connect the monitor's USB ports to the USB connector on the computer. ■ Mounting feature on bottom of monitor to accept an optional HP Speaker Bar ...

HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced) - Page 10

...disconnect the monitor by pulling the cord. ■ Turn your monitor off the monitor when not in use . Not all power cords for your computer and its peripheral devices (such as a monitor, printer, scanner) ... of your monitor by grasping the plug firmly and pulling it from the outlet. If your monitor is not operating properly or has been dropped or damaged, contact your HP authorized dealer,...

HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced) - Page 39

... Windows system tray or right-click the icon and select Configure... Operating the Monitor 13. It allows you are finished, select Save and Return to most internal circuits. This helps protect the LCD panel against image retention. Select "Install HP Display LiteSaver Software." 3. Set the Timer mode to On to activate the Sleep...

HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced) - Page 47

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. L1940T 19" LCD Monitor L1940T Specifications Display Type 19.0 inches TFT LCD 48.3 cm Viewable Image Size 19.0-inch diagonal 48.3 cm Tilt Swivel --5 to 35° --90 to 90° Face ...

HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced) - Page 57

D LCD Monitor Quality and Pixel Policy The TFT monitor uses high-precision technology, manufactured according to HP standards, to the HP LCD. The HP display does not have cosmetic ... all vendors and is always off (a dark spot on a specific background. This is common to all LCD displays used in products supplied by one blue sub-pixel. ■ A defective whole pixel is always turned...

HP L1940T 19" LCD Monitor User Guide (Accessibility Enhanced) - Page 58

D-2 User Guide LCD Monitor Quality and Pixel Policy 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 (16 in.). HP expects that, over time, the industry will continue to improve its ability to produce LCDs with...