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HP DreamColor Z27x, User Manual

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Table of contents

1  Product Features .............................................................................................................................................. 1

HP Z27x Monitor .................................................................................................................................. 1

2  Safety and Maintenance Guidelines ................................................................................................................. 3

Important Safety Information ................................................................................................................ 3
Maintenance Guidelines ....................................................................................................................... 3

Cleaning the Monitor ............................................................................................................ 4
Shipping the Monitor ............................................................................................................ 4

3  Setting Up the Monitor ...................................................................................................................................... 5

Use Caution When Setting Up the Monitor .......................................................................................... 5
Installing the Stand ............................................................................................................................... 6
Rear Components ................................................................................................................................ 7
Connecting the Cables ......................................................................................................................... 8
Front Panel Controls ..........................................................................................................................  12
Adjusting the Monitor .......................................................................................................................... 13
Turning on the Monitor ....................................................................................................................... 15
HP Watermark and Image Retention Policy ....................................................................................... 17
Connecting USB Devices ................................................................................................................... 17
Removing the Monitor Stand .............................................................................................................. 18
Mounting the Monitor .......................................................................................................................... 19

Mounting the Monitor Using the Quick Release 2 Mounting Bracket ................................  19
Mounting the Monitor Without Using the Quick Release 2 Mounting Bracket ................... 22

Installing an Optional HP Hood Kit ..................................................................................................... 23
Locating the Serial Number and Product Number .............................................................................. 24
Locating the Information Card ............................................................................................................ 24
Attaching a Device to the Rear of the Monitor .................................................................................... 25
Installing a Cable Lock ....................................................................................................................... 26

4  Operating the Monitor ..................................................................................................................................... 27

Software and Utilities .......................................................................................................................... 27

The Information File ........................................................................................................... 27
The Image Color Matching File .......................................................................................... 27

Installing the .INF and .ICM Files ....................................................................................................... 28

Installing from the Disc ......................................................................................................  28
Downloading from the Internet ........................................................................................... 28

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Summary of Contents for DreamColor Z27x

Page 1: ...HP DreamColor Z27x Display User Guide ...

Page 2: ...of the Microsoft group of companies The information contained herein is subject to change without notice The only warranties for HP products and services are set forth in the express warranty statements accompanying such products and services Nothing herein should be construed as constituting an additional warranty HP shall not be liable for technical or editorial errors or omissions contained her...

Page 3: ...nner 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 This product incorporates HDMI technology iii ...

Page 4: ...iv About This Guide ...

Page 5: ...n Policy 17 Connecting USB Devices 17 Removing the Monitor Stand 18 Mounting the Monitor 19 Mounting the Monitor Using the Quick Release 2 Mounting Bracket 19 Mounting the Monitor Without Using the Quick Release 2 Mounting Bracket 22 Installing an Optional HP Hood Kit 23 Locating the Serial Number and Product Number 24 Locating the Information Card 24 Attaching a Device to the Rear of the Monitor ...

Page 6: ... Show Entire DCI Container 36 Crop to DCI 1 85 1 Aspect Ratio 36 Crop to DCI 2 39 1 Aspect Ratio 37 Show Cropped Region 37 Set Cropped Region Opacity 37 Displaying 4K Source Video 37 Obey Aspect Ratio Display Option 37 Scale and Show Center Extraction 37 Scale and Show Left Side of Frame 37 Scale and Show Right Side of Frame 37 Show 4K Source Video Pixel for Pixel 38 Next 4K Corner 38 Scroll 4K Re...

Page 7: ...librating the Z27x Using the Onscreen Menus 53 Recalibrate the Current Preset 54 Select and Modify a Preset 54 Auto EDID Update 55 Appendix A Technical Specifications 57 Z27x Model 57 Recognizing Preset Display Resolutions 58 Z27x Model 58 Appendix B Support and Troubleshooting 60 Solving Common Problems 60 Button Lockouts 61 Product Support 62 Preparing to Call Technical Support 62 Appendix C LCD...

Page 8: ...viii ...

Page 9: ...separately purchased HP DreamColor Calibration Solution kit Option to return to Factory Calibration settings or User Calibration settings to easily restore the monitor to the factory or user settings User calibration that requires the DreamColor calibration solution kit sold separately or a third party measurement device Built in support for the Klein K10 A Photo Research PR 6xx 7xx series and Kon...

Page 10: ...rovision on rear of monitor for optional cable lock Cable management feature for placement of cables and cords On Screen Display OSD adjustments in several languages for easy setup and screen optimization HDCP High Bandwidth Digital Content Protection copy protection on all digital inputs Software and documentation disc that includes monitor drivers product documentation and Windows based calibrat...

Page 11: ... safety information This guide is located on the Web at http www hp com ergo 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 s...

Page 12: ...ace 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 stand 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 unplug the power cord from ...

Page 13: ...vent damage to the monitor do not touch the surface of the LCD panel Pressure on the panel may cause non uniformity of color or disorientation of the liquid crystals If this occurs the screen will not recover to its normal condition If installing a base lay the monitor face down on a flat surface covered with a protective sheet foam or non abrasive cloth This prevents the screen from getting scrat...

Page 14: ...he panel onto the stand 1 Lay the monitor panel face down on a flat surface covered by a clean dry cloth 2 Slide the top of the mounting plate 1 on the stand under the upper lip of the recess in the back of the panel 3 Lower the bottom of the stand s mounting plate 2 into the recess until it snaps into place 4 The HP Quick Release 2 latch 3 pops up when the stand is locked in place NOTE If you are...

Page 15: ...dio Out Connects headphones or optional HP Speaker Bar to the monitor 6 DisplayPort 1 Connects a DisplayPort cable to the monitor 7 HDMI Connects an HDMI cable to the monitor 8 DisplayPort 2 Connects a DisplayPort cable to the monitor 9 RJ 45 Network Connector Connects a network cable to the monitor 10 DreamColor USB 2 0 Ports Connects a color calibration instrument or a USB flash drive for color ...

Page 16: ...d video signals The inputs can be selected through the On Screen Display OSD feature by pressing one of the five front bezel buttons to activate the buttons and then press the bottom Open Menu button to open the OSD In the OSD select Video Input and choose the desired input source For DisplayPort digital operation connect the DisplayPort signal cable to the DisplayPort connector on the rear of the...

Page 17: ... For HDMI digital operation connect the HDMI signal cable to the HDMI connector on the rear of the monitor and the other end to the HDMI connector on the computer cable provided Connecting the Cables 9 ...

Page 18: ...other end to the upstream USB connector on the monitor NOTE The monitor supports USB 3 0 For optimal performance connect the USB cable to a USB 3 0 port on the computer if available 5 Connect a live network connector to the network connector on the rear of the monitor optional 10 Chapter 3 Setting Up the Monitor ...

Page 19: ...cessible at all times Disconnect power from the computer by unplugging the power cord from the AC outlet If provided with a 3 pin attachment plug on the power cord plug the cord into a grounded earthed 3 pin outlet Do not disable the power cord grounding pin for example by attaching a 2 pin adapter The grounding pin is an important safety feature For your safety do not place anything on power cord...

Page 20: ...e of the screen and the button LEDs are lit 3 Power button Turns the monitor on or off NOTE Be sure the master power switch on the rear of the monitor is in the ON position to turn on the monitor NOTE To view an OSD menu simulator visit the HP Customer Self Repair Services Media Library at http www hp com go sml NOTE You can adjust the bezel button brightness and change the function of the buttons...

Page 21: ...Adjusting the Monitor 1 Tilt the monitor s panel forward or backward to set it to a comfortable eye level 2 Swivel the monitor to the left or right for the best viewing angle Adjusting the Monitor 13 ...

Page 22: ... adapt to your application a Adjust the monitor to full height position and tilt the monitor back to full tilt position 1 b Pivot the monitor clockwise 90 from landscape to portrait orientation 2 CAUTION If the monitor is not in full height and full tilt position when pivoting the bottom right corner of the monitor panel will come in contact with the base and potentially cause damage to the monito...

Page 23: ...rait to landscape open the OSD and select Image Adjustment On Screen Menu Rotation Portrait Turning on the Monitor 1 Set the master power switch on the rear of the monitor to the On position 2 Press the power button on the computer to turn it on 3 Press the power button on the front of the monitor to turn it on Turning on the Monitor 15 ...

Page 24: ...ed on a Monitor Status message is displayed for five seconds The message shows which input is the current active signal the status of the auto switch source setting On or Off factory default is On the default source signal factory default is DisplayPort the current preset display resolution and the recommended preset display resolution The monitor automatically scans the signal inputs for an activ...

Page 25: ...screen for a prolonged period of time Static images may cause image retention damage that could look like stains or watermarks on the monitor s screen Monitors in use for 24 hours per day that result in image retention damage are not covered under the HP warranty To avoid image retention damage always turn off the monitor when it is not in use or use the power management setting if supported on yo...

Page 26: ... are all disconnected Also disconnect all USB cables connected to the monitor 1 Disconnect and remove all cables from the monitor 2 Lay the monitor face down on a flat surface covered by a clean dry cloth 3 Press down on the latch near the bottom center of the monitor to unlock the HP Quick Release 2 1 4 Swing the bottom of the stand up until the mounting plate clears the recess in the panel 2 5 S...

Page 27: ...third party mounting solution to the monitor four 4 mm 0 7 pitch and 10 mm long screws are required Longer screws must 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 c...

Page 28: ...e the four screws from the mounting plate to separate the mounting plate from its cover 3 Remove the four screws from the VESA holes located on the rear of the monitor panel 20 Chapter 3 Setting Up the Monitor ...

Page 29: ...the monitor panel 5 Place the monitor panel on the mounting bracket you ve installed by aligning its recess with the mounting bracket then sliding it down over the top of the bracket and pressing it back into place against the bracket The release latch on the monitor will pop up when the monitor is safely locked in place Mounting the Monitor 21 ...

Page 30: ...nitor panel directly to a mounting fixture without using the HP Quick Release 2 mounting bracket use the four screws removed from the VESA holes on rear of the monitor panel and install them to attach the mounting device to the rear of the monitor panel 22 Chapter 3 Setting Up the Monitor ...

Page 31: ... display from ambient light Reduces on screen glare from surrounding office lighting and windows Improves the monitor color and contrast performance 1 Assemble the hood according to the instructions included with the kit 2 Remove the plugs that cover the screw holes for the hood NOTE You may need to use a small screwdriver to pry the plugs out 3 Secure the hood to the monitor using the screws incl...

Page 32: ...ay head to read the label Locating the Information Card Identifying information is located on the pull out card and included on a label on the back of the monitor The card pulls out from behind the USB connectors on the left side of the panel Warranty support information model number serial number product number is printed on the front of the card and the label and regulatory information is printe...

Page 33: ...g holes that can be used to mount a device such as an SDI or HDMI converter 1 Remove the plugs from the VESA mounting holes on the rear of the monitor NOTE You may need to use a small screwdriver to pry the plugs out 2 Mount the device to the rear of the monitor Attaching a Device to the Rear of the Monitor 25 ...

Page 34: ...Installing a Cable Lock You can secure the monitor to a fixed object with an optional cable lock available from HP 26 Chapter 3 Setting Up the Monitor ...

Page 35: ...nsure 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 DDC2 compliant and that the monitor connects directly to the graphics card Plug and Play does not work through separate BN...

Page 36: ... 3 Select your model then select your language and operating system 4 Download the software by following the instructions Updating the Firmware HP recommends that you check for updated display firmware and install newer firmware if available NOTE By default the monitor s internal processor which is required for firmware updating is disabled You must enable the processor before you can update the m...

Page 37: ...ed e Download the firmware onto a USB flash drive The following USB drive formats are supported FAT FAT32 NTFS 3 Insert the USB flash drive with the latest firmware into one of the DreamColor USB ports and follow the onscreen instructions to install the firmware NOTE The firmware is distributed as a compressed signed tar file Do not decompress the file before installing CAUTION The monitor screen ...

Page 38: ...5 white point and a 2 2 gamma To select a color space preset 1 Press any button on the front bezel 2 Press the bottom Open Menu button to open the OSD 3 Select Color Space to display the color space configuration screen 4 Use the Up Down buttons to navigate to the desired color space then press the Select button to activate it Adjusting Luminance Though each preset is calibrated to a specific lumi...

Page 39: ...hites are darker and colors have less saturation than the signal actually contains When this option is enabled the blacks will be clipped at the 8 bit value of 16 and the whites at the 8 bit value of 235 for 10 bit the clipping will occur at the values of 64 and 960 The signal is then remapped to display the signal in the correct visual range It is important to note that the source and pre process...

Page 40: ... typically found in a computer monitor This section discusses these options with a focus of how these options are integrated into specific workflows The Fill To Options These options are used to determine how the source input is displayed onscreen if its resolution is different from the monitor s native resolution of 2560 1440 Fill to Source Aspect Ratio Proportional This option will maintain the ...

Page 41: ...e the source image so that the height matches the monitor height Then the source image is centered horizontally and the top and bottom of the image are cropped off leaving a 16 9 center extraction of the wider frame The proportions of the source image are maintained The Fill to Screen Height option should be used when horizontal center extractions are desired as part of the dailies or review scree...

Page 42: ...Figure 4 2 Fill to Aspect Ratio Figure 4 3 Fill to Entire Screen Figure 4 4 Fill to Screen Width 34 Chapter 4 Operating the Monitor ...

Page 43: ...96 2160 image formats containers as specified in the Digital Cinema Initiatives DCI Digital Cinema System Specification The following table lists the supported formats DCI Level Horizontal Pixels Vertical Pixels Frame Rate 1 4096 2160 24 00 2 2048 1080 48 00 3 2048 1080 24 00 TBD 2048 1080 60 00 At the time of this document s release the 60 00 fps 2K format has not yet been formally codified by th...

Page 44: ...ze To access the digital cinema display options 1 Connect a computer or video device to the monitor that is configured to output a 2048 1080 or 4096 2160 resolution 2 Press any button on the front bezel 3 Press the bottom Open Menu button to open the OSD 4 Select Image Adjustment to display the adjustment options screen 5 Select Aspect Ratio Display to display the display options 6 Select Digital ...

Page 45: ...6 2160 or 3840 2160 signal is input into the monitor the following scaling options are available via the 4K Sources section of the Digital Cinema Options page If DCI aspect ratio cropping has been selecting these options are applied after the image is cropped Obey Aspect Ratio Display Option This default option will display the image according to the selected Fill to Aspect Ratio Display option Re...

Page 46: ...f the monitor that shows the entire 4K image and indicates the area of interest being show full screen Use the directional bezel buttons to shift the area of interest When this option is turned off the pop up will vanish but the area of interest will continue to be displayed Using Picture in Picture PIP and Picture beside Picture PBP The monitor supports both PIP where one source is overlaid over ...

Page 47: ... nothing will be cut off on a consumer television Digital Cinema Options If you display a 2048 1080 signal as a PIP you can instruct the monitor to display either the full DCI container or crop the PIP to either the 1 85 1 or 2 39 1 aspect ratio If cropping to an aspect ratio the shape of the PIP will change to the chosen aspect ratio Black bars will not be visible at the edges of the PIP Changing...

Page 48: ... be used as another method of quickly switching between two inputs Next PIP Corner use this option to move the PIP from position to position on the screen Repeated use of this command will fly the PIP in the following order Upper Left Corner Upper Right Corner Lower Left Corner Lower Right Corner Show Display information this command will display useful display information including Display Mode A...

Page 49: ...nu button to open the OSD 2 In the OSD select Menu and Message Control Bezel Button Auto Fade Disable Always On If the bezel button fade out feature has been disabled as described above you can adjust the brightness of the buttons on the front bezel to different levels of ambient lighting To change the bezel button brightness 1 Press one of the five front bezel buttons to activate the buttons and ...

Page 50: ... image based on your viewing preferences To access the OSD do the following 1 Press any of the five buttons on the right side of the front bezel to activate the buttons 2 Press the bottom Open Menu button to open the OSD 3 Use the top four Function buttons to navigate select and adjust the menu choices The button labels are variable depending on the menu or sub menu that is active NOTE OSD menu it...

Page 51: ...2 Level 3 Level 4 Video Input DisplayPort 1 DisplayPort 2 HDMI Auto Switch Source Enable Disable Back Back Image Adjustment Menu Level 1 Level 2 Level 3 Level 4 Image Adjustment Aspect Ratio Display Fill to Source Aspect Ratio Proportional Fill to Entire Screen Non Proportional Fill to Screen Width Proportional Fill to Screen Height Non Proportional Pixel for Pixel Digital Cinema Options Image Reg...

Page 52: ...Use Video Levels 16 235 Overscan Frame by 5 Show Blue Channel Only On Screen Menu Rotation Landscape Portrait Back Advanced Overdrive Overdrive may improve refresh speed and eliminate image smearing but will cause other features such as PIP to be disabled for certain input resolutions Enable Disable Back Deinterlacer The deinterlacer should be enabled if you are using an interlaced source such as ...

Page 53: ... Mode Information PIP Control Menu Level 1 Level 2 Level 3 Level 4 PIP Control PIP On Off Picture in Picture Picture beside Picture Off Back PIP Size Enlarge Reduce Set to Maximum Size Set to Minimum Size Reset to Default Size Back PIP Position Top Left Top Right Bottom Left Bottom Right Fine Tune Position Back PIP Input DisplayPort 1 DisplayPort 2 HDMI Swap Primary and PIP Inputs Back Using the O...

Page 54: ... Ratio Show Cropped Region Back Primary PIP Source Information Language Menu Level 1 Level 2 Level 3 Level 4 Language Deutsch Traditional Chinese Simplified Chinese English Español Français Italiano Japanese Nederlands Português Management Menu Level 1 Level 2 Level 3 Level 4 Management Auto Sleep Do you want the display to go to sleep when there is no active video input Enable Disable Back 46 Cha...

Page 55: ...nt the display to initiate a Hot Plug Event when you switch color spaces Enable Disable Back DisplayPort Hot Plug Detection Do you want DisplayPort connections to switch to low power mode when the monitor sleeps or remain active so the monitor can respond to communication from the host Low Power Always Active Back Level 1 Level 2 Level 3 Level 4 Management continued DisplayPort Compatibility Not a...

Page 56: ...B Only Enable Via Network Only Disable Back Calibration Support Do you want to allow display calibration Enable Disable Back Management continued Remote Management Services Enable Disable Server Do you want to enable the internal remote management web server Enable Disable Back IP Configuration Mode DHCP Manual IPv4 Address xxx xxx xxx xxx IPv4 Subnet Mask xxx xxx xxx xxx IPv4 Gateway xxx xxx xxx ...

Page 57: ...Level 1 Level 2 Level 3 Level 4 Reset Administrator Password Back Using the On Screen Display Menu 49 ...

Page 58: ... Remind Me of the Warmup Time Notify Me When Recalibration is Due Back Level 1 Level 2 Level 3 Level 4 Menu and Message Control continued Configure Function Buttons Configure Function Button 1 Configure Function Button 2 Configure Function Button 3 Configure Function Button 4 Color Space Select Adjust Luminance Video Input Select Switch to Next Active Video Input Aspect Ratio Display Video Levels ...

Page 59: ...ey Menu Timeout Disable Always On Back Back Information and Factory Reset Menus Level 1 Level 2 Level 3 Level 4 Information Display Mode Display Mode Color Space Color Space Current Video Pipeline Delay xx ms Serial Number Serial Number Firmware Revision Firmware Revision ID Last Calibration xxxxx Hours Backlight Hours xxxxx Hours Internal Processor On Off Remote Management Server On Off IPv4 Addr...

Page 60: ... Green Primary u v Blue Primary u v White Point Gamma Luminance sRGB 0 451 0 523 0 125 0 563 0 175 0 158 D65 sRGB 250 cd m2 sRGB D50 0 451 0 523 0 125 0 563 0 175 0 158 D50 sRGB 250 cd m 2 AdobeRGB 0 451 0 523 0 076 0 576 0 175 0 158 D65 2 2 250 cd m2 BT 709 0 451 0 523 0 125 0 563 0 175 0 158 D65 2 4 100 cd m2 BT 2020 0 557 0 516 0 056 0 587 0 159 0 126 D65 2 4 100 cd m2 DCI P3 0 496 0 526 0 099 ...

Page 61: ...ibration This user guide only covers the onscreen menu driven calibration option Please refer to the HP DreamColor Z27x Advanced User Guide or the Calibration Best Practices white paper for information on the XML driven option Preparing to Calibrate In order to calibrate the Z27x internal processor must be enabled To meet the energy savings requirements of Energy Star 6 0 the internal processor is...

Page 62: ...uring the calibration process then display a calibration complete message at the end of calibration Select and Modify a Preset This option allows you to choose the color space to calibrate and change the gamut white point gamma and luminance targets This is the recommended procedure if you want to modify a color space preset from its factory configuration When this option is selected you will be p...

Page 63: ... cd m2 appropriate for the dim lighting used in a video post production suite 80 cd m2 also appropriate for the dim lighting used in a video post production suite 48 cd m2 appropriate for the darkened environment used in film post production and dailies screening NOTE Further information on these standard values is provided in the Z27x Advanced User Guide Once all of the options are selected the d...

Page 64: ...tons on the right side of the front bezel to activate the buttons 2 Press the bottom Open Menu button to open the OSD 3 In the OSD select Management Auto EDID Update and then select either Enable or Disable 56 Chapter 4 Operating the Monitor ...

Page 65: ...64 75 cm 21 10 inches 117 44 inches 9 49 inches 25 49 inches Maximum Graphic Resolution 2560 1440 60 Hz digital input Optimum Graphic Resolution 2560 1440 60 Hz digital input Environmental Requirements Temperature Operating Temperature Storage Temperature 5 to 35 C 20 to 60 C 41 to 95 F 4 to 140 F Power Source 100 240 VAC 50 60 Hz Input Terminal Two DisplayPort connectors one HDMI connector one Di...

Page 66: ...00 7 720 576 4 3 50 p 27 000 8 720 576 16 9 50 i 27 000 9 720 576 16 9 50 p 27 000 10 800 600 4 3 60 317 40 000 11 1024 768 4 3 60 004 65 000 12 1280 720 16 9 24 p 59 400 13 1280 720 16 9 30 p 74 250 14 1280 720 16 9 50 p 74 250 15 1280 720 16 9 60 p 74 250 16 1280 1024 5 4 60 020 108 000 17 1366 768 16 9 60 000 72 000 18 1600 1200 4 3 60 000 162 000 19 1920 1080 16 9 24 p 74 250 20 1920 1080 16 9...

Page 67: ...ated by p If no indication is given the mode is progressive scan NOTE The 2048 1080 and 4096 2160 modes represent the two standard envelopes described by the Digital Cinema Initiative DCI specification They have a native aspect ratio of approximately 1 896 1 256 135 but also support 1 85 1 and 2 39 1 aspect ratios For more information refer to Using the Digital Cinema Display Options on page 36 NO...

Page 68: ...ed Connect the appropriate video signal cable between the computer and monitor Be sure that the computer power is off while connecting the video cable Input Signal Out of Range is displayed on screen Video resolution and or refresh rate are set higher than what the monitor supports Change the settings to a supported setting see Recognizing Preset Display Resolutions on page 58 The monitor is off b...

Page 69: ...ns that must be held down for ten seconds to enable and disable the lockout Activation Button Lockout Notes Power button Power lockout When locked out the power button does not function The display can still be turned off via the power switch at the bottom of the display Bottom menu button Menu lockout The Primary OSD cannot be entered However any assigned function buttons such as switch color spa...

Page 70: ...ome hp com country us en wwcontact_us html Here you can Chat online with an HP technician NOTE When support chat is not available in a particular language it is available in English Find support telephone numbers Locate an HP service center Preparing to Call Technical Support If you cannot solve a problem using the troubleshooting tips in this section you may need to call technical support Have th...

Page 71: ...ub 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 cond...

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