Dell UltraSharp 27 Series User Manual Download Page 51

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Troubleshooting

Troubleshooting

WARNING: Before you begin any of the procedures in this section, follow the

Safety Instructions

Self-Test

Your monitor provides a self-test feature that allows you to check whether your monitor is

functioning properly. If your monitor and computer are properly connected but the monitor

screen remains dark, run the monitor self-test by performing the following steps:

Turn off both your computer and the monitor.

Unplug the video cable from the back of the computer. To ensure proper Self-Test

operation, remove all digital and the analog cables from the back of computer.

Turn on the monitor.

The floating dialog box should appear on-screen (against a black background), if the monitor

cannot sense a video signal and is working correctly. While in self-test mode, the power LED

remains white. Also, depending upon the selected input, one of the dialogs shown below will

continuously scroll through the screen.

U2720Q

U2720QM

Dell UltraSharp 27 Monitor

The display will go into Power Save Mode in 4 minutes.

No HDMI Cable

www.dell.com/support/U2720Q

U2720Q

Dell UltraSharp 27 Monitor

The display will go into Power Save Mode in 4 minutes.

No DP Cable

www.dell.com/support/U2720Q

U2720Q

Dell UltraSharp 27 Monitor

The display will go into Power Save Mode in 4 minutes.

No HDMI Cable

www.dell.com/support/U2720QM

U2720QM

Dell UltraSharp 27 Monitor

The display will go into Power Save Mode in 4 minutes.

No DP Cable

www.dell.com/support/U2720QM

U2720QM

Summary of Contents for UltraSharp 27 Series

Page 1: ...Model U2720Q U2720QM Regulatory model U2720Qt Dell UltraSharp 27 4K USB C Monitor U2720Q U2720QM User s Guide ...

Page 2: ...r loss of data if instructions are not followed WARNING A WARNING indicates a potential for property damage personal injury or death Copyright 2020 Dell Inc or its subsidiaries All rights reserved Dell EMC and other trademarks are trademarks of Dell Inc or its subsidiaries Other trademarks may be trademarks of their respective owners 2020 01 Rev A00 ...

Page 3: ...1 Attaching the Stand 21 Using the Tilt Swivel and Vertical Extension 24 Adjusting the Rotation Display Settings of Your System 25 Connecting Your Monitor 26 Requirements to view or play HDR content 28 Organizing Your Cables 29 Removing the Monitor Stand 29 Wall Mounting Optional 30 Operating the Monitor 31 Turning on the Monitor 31 Using the Front Panel Controls 31 Using the OSD Lock function 33 ...

Page 4: ...shooting 51 Self Test 51 Built in Diagnostics 53 Common Problems 54 Product Specific Problems 56 Appendix 58 Safety Instructions 58 FCC Notices U S only and Other Regulatory Information 58 Contacting Dell 58 Setting Up Your Monitor 59 Maintenance Guidelines 61 ...

Page 5: ...Make sure that you have received all the components and contact Dell if something is missing NOTE Some items may be optional and may not ship with your monitor Some features or media may not be available in certain countries Monitor Stand riser Stand base Power cable varies by country USB Type C cable C to C ...

Page 6: ...alibration Report Product Features The Dell UltraSharp U2720Q U2720QM monitor has an active matrix thinfilm transistor TFT liquid crystal display LCD and LED backlight The monitor features include 68 47 cm 27 in active area display Measured diagonally 3840 x 2160 16 9 resolution plus full screen support for lower resolutions Wide viewing angles with 99 sRGB color with an average Delta E 2 Tilt swi...

Page 7: ...About Your Monitor 7 Identifying Parts and Controls Front view 1 2 Label Description 1 Function buttons For more information see Operating the Monitor 2 Power on off button with LED indicator ...

Page 8: ... the regulatory approvals 3 Stand release button Release stand from monitor 4 Barcode serial number and Service Tag label Refer to this label if you need to contact Dell for technical support 5 Cable management slot Use to organize cables by placing them through the slot Side View 1 2 Label Description Use 1 USB downstream port Port with battery icon supports BC 1 2 2 USB Type C downstream port Po...

Page 9: ...lternate mode with DP 1 4 support the maximum resolution of 3840 x 2160 at 60 Hz PD 20 V 4 5 A 15 V 3 A 9 V 3 A 5 V 3 A NOTE USB Type C is not supported on Windows versions that are prior to Windows 10 6 Audio line out port Connect speakers to playback audio coming through USB Type C or DP audio channels Only supports 2 channel audio NOTE The audio line out port does not support headphones 7 USB d...

Page 10: ...ypical Display screen coating Anti glare treatment of the front polarizer 3H hard coating Backlight LED Response Time Gray to Gray 5 ms FAST mode 8 ms NORMAL mode Color depth 1 07 billion colors Color gamut 99 sRGB 99 REC709 95 DCI P3 Calibration accuracy Delta E 2 average Connectivity 1 x DP 1 4 HDCP 1 4 HDCP 2 2 1 x HDMI 2 0 HDCP 1 4 HDCP 2 2 1 x USB Type C Alternate mode with DisplayPort 1 4 US...

Page 11: ...DM Compatibility Easy Arrange and other key features Security Security lock slot cable lock sold separately Anti theft stand lock slot to panel At panel native only under Custom Mode preset Resolution Specifications Horizontal scan range 30 khz to 140 khz Vertical scan range 24 Hz to 75 Hz Maximum preset resolution 3840 x 2160 at 60 Hz Video display capabilities HDMI DP USB Type C alternate mode 4...

Page 12: ...x 768 60 0 75 0 78 8 VESA 1152 x 864 67 5 75 0 108 0 VESA 1280 x 1024 64 0 60 0 108 0 VESA 1280 x 1024 80 0 75 0 135 0 VESA 1600 x 1200 75 0 60 0 162 0 VESA 1680 x 1050 65 29 60 0 146 25 VESA 1920 x 1080 67 5 60 0 148 5 VESA 1920 x 1200 74 04 60 0 154 VESA 2048 x 1152 70 99 60 0 156 75 VESA 2048 x 1280 78 92 60 0 174 25 CVR 2560 x 1440 88 8 60 0 241 5 VESA 3840 x 2160 54 24 0 297 VESA 3840 x 2160 ...

Page 13: ... 0 downstream port connector x 3 Port with battery icon supports BC 1 2 USB 3 0 Type C downstream port connector x 1 Port with icon supports 3 A Signal cable type DP to DP 1 8 M cable U2720Q only HDMI 1 8 M cable U2720QM only USB Type C C to C 1 0 M cable USB Type C C to A 1 8 M cable Dimensions with stand Height extended 525 2 mm 20 68 in Height compressed 395 2 mm 15 56 in Width 611 3 mm 24 07 i...

Page 14: ...ble EPEAT registration varies by country See www epeat net for registration status by country TCO Certified Display RoHS Compliant BFR PVC Free monitor excluding external cables Meets NFPA 99 leakage current requirements Arsenic Free glass and Mercury Free for the panel only Temperature Operating 0 C to 40 C 32 F to 104 F Non operating 20 C to 60 C 4 F to 140 F Humidity Operating 10 to 80 non cond...

Page 15: ...ell UltraSharp 27 Monitor U2720Q No DP signal from your device Press any key on the keyboard or move the mouse or wake it up If there is no display press the monitor button again to select the correct input source Dell UltraSharp 27 Monitor U2720QM No DP signal from your device Press any key on the keyboard or move the mouse or wake it up If there is no display press the monitor button again to se...

Page 16: ...STAR specified limit NOTE Pon Power consumption of On Mode as defined in Energy Star 8 0 version TEC Total energy consumption in kWh as defined in Energy Star 8 0 version Pin Assignments DP port Pin number 20 pin side of the connected signal cable Pin number 20 pin side of the connected signal cable 1 ML3 n 11 GND 2 GND 12 ML0 p 3 ML3 p 13 CONFIG1 4 ML2 n 14 CONFIG2 5 GND 15 AUX CH p 6 ML2 p 16 GN...

Page 17: ... signal cable 1 TMDS DATA 2 11 TMDS CLOCK SHIELD 2 TMDS DATA 2 SHIELD 12 TMDS CLOCK 3 TMDS DATA 2 13 CEC 4 TMDS DATA 1 14 Reserved N C on device 5 TMDS DATA 1 SHIELD 15 DDC CLOCK SCL 6 TMDS DATA 1 16 DDC DATA SDA 7 TMDS DATA 0 17 DDC CEC Ground 8 TMDS DATA 0 SHIELD 18 5 V POWER 9 TMDS DATA 0 19 HOT PLUG DETECT 10 TMDS CLOCK ...

Page 18: ...C port Pin Signal Pin Signal A1 GND B12 GND A2 SSTXp1 B11 SSRXp1 A3 SSTXn1 B10 SSRXn1 A4 VBUS B9 VBUS A5 CC1 B8 SBU2 A6 Dp1 B7 Dn1 A7 Dn1 B6 Dp1 A8 SBU1 B5 CC2 A9 VBUS B4 VBUS A10 SSRXn2 B3 SSTXn2 A11 SSRXp2 B2 SSTXp2 A12 GND B1 GND ...

Page 19: ...n supports fast current charging capability if the device is 3 A compatible NOTE The monitor s USB ports work only when the monitor is on or in the power save mode In power save mode if the USB cable Type C to Type C is plugged in the USB ports can work normally Otherwise follow the OSD setting of USB if the setting is On During Standby then USB work normally otherwise USB is disabled If you turn ...

Page 20: ...ttings Most monitor installations are automatic you can select different settings if desired For more information about changing the monitor settings see Operating the Monitor LCD Monitor Quality and Pixel Policy During the LCD monitor manufacturing process it is not uncommon for one or more pixels to become fixed in an unchanging state which are hard to see and do not affect the display quality o...

Page 21: ...for the default stand If you purchased any other stand see the documentation shipped with the stand to set it up To attach the monitor stand 1 Align the stand base protruded blocks to the matching slot on the stand 2 Insert the stand base blocks fully into the stand slot 3 Lift the screw handle and turn the screw clockwise 4 After fully tightening the screw fold the screw handle flat within the re...

Page 22: ...ver as shown to expose the VESA area for stand assembly 6 Attach the stand assembly to the monitor a Fit the two tabs on the upper part of the stand to the groove on the back of the monitor b Press the stand down till it snaps into place b a ...

Page 23: ...nitor 23 7 Place the monitor upright Hold the monitor stand firmly with both hands Lift the monitor carefully to prevent it from slipping or falling NOTE Lift the monitor carefully to prevent it from slipping or falling ...

Page 24: ... from the factory Rotating the Monitor Before you rotate the monitor your monitor should be fully vertically extended and fully tilted up to avoid hitting the bottom edge of the monitor 2 1 90 90 NOTE To use the Display Rotation function Landscape versus Portrait view with your Dell computer you require an updated graphics driver that is not included with this monitor To download the graphics driv...

Page 25: ...y Settings 1 Right click on the desktop and click Properties 2 Select the Settings tab and click Advanced 3 If you have an AMD graphics card select the Rotation tab and set the preferred rotation 4 If you have an nVidia graphics card click the nVidia tab in the left hand column select NVRotate and then select the preferred rotation 5 If you have an Intel graphics card select the Intel graphics tab...

Page 26: ...MI USB type C cable from your monitor to the computer 3 Switch on your monitor 4 Select the correct input source at monitor OSD Menu and turn on your computer NOTE U2720Q U2720QM default setting is DP 1 4 A DP 1 1 Graphic card may not display normally Please refer to product specific problems No image when using DP connection to the PC to change default setting Connecting the HDMI cable HDMI HDMI ...

Page 27: ... up to 90 W NOTE Regardless of the power requirement actual power consumption of your laptop or the remaining power runtime in your battery the Dell U2720Q U2720QM monitor is designed to supply power delivery of up to 90 W to your laptop Rated power on laptops that have USB Type C with PowerDelivery Maximum charging power 45 W 45 W 65 W 65 W 90 W 90 W 130 W Not supported Connecting the USB Type C ...

Page 28: ...IA graphics cards include GTX1070 GTX1080 P5000 P6000 and so on For a full range of HDR capable NVIDIA graphics cards see the NVIDIA website www nvidia com Driver that supports Full Screen Playback mode for example computer games UltraBluRay players HDR on Win10 Redstone 2 OS 384 76 or later AMD HDR capable AMD graphics cards include RX480 RX470 RX460 WX7100 WX5100 WX4100 and so on For a full rang...

Page 29: ... To prevent scratches on the LCD screen while removing the stand make sure that the monitor is placed on a soft clean surface NOTE The procedure below is applicable for the default stand If you purchased any other stand see the documentation shipped with the stand to set it up To remove the stand 1 Place the monitor on a soft cloth or cushion 2 Press and hold the stand release button 3 Lift the st...

Page 30: ...r cushion on a stable flat table 2 Remove the stand 3 Use a Phillips crosshead screwdriver to remove the four screws securing the plastic cover 4 Attach the mounting bracket from the wall mounting kit to the monitor 5 Mount the monitor on the wall by following the instructions that comes with the wall mounting kit NOTE For use only with UL or CSA or GS listed wall mount bracket with minimum weight...

Page 31: ...rn on the monitor Using the Front Panel Controls Use the control buttons at the bottom edge of the monitor to adjust the characteristics of the image being displayed As you use these buttons to adjust the controls an OSD shows the numeric values of the characteristics as they change 3 4 5 1 2 ...

Page 32: ...tton to choose from a list of Input Source 3 Menu Use this menu button to launch the on screen display OSD and select the OSD menu See Accessing the Menu System 4 Exit Use this button to go back to the main menu or exit the OSD main menu 5 Power with power light indicator Use the Power button to turn the monitor On and Off The white LED indicates the monitor is On and fully functional A glowing wh...

Page 33: ...lowing message will appear U2720Q U2720QM Dell UltraSharp 27 Monitor Are you sure you want to lock the Menu Buttons To unlock the Buttons refer to the User s Guide Yes No U2720Q Dell UltraSharp 27 Monitor Are you sure you want to lock the Menu Buttons To unlock the Buttons refer to the User s Guide Yes No U2720QM 2 Select Yes to Lock the buttons the following table describes the control icons Opti...

Page 34: ... seconds when OSD locked Select the following table describes the unlock icons Options Description 1 Menu Buttons lock Use this icon to unlock OSD menu function 2 Power button lock Use this icon to unlock power button from powering off 3 Menu and Power buttons lock Use this icon to unlock OSD menu and power button from powering off ...

Page 35: ... of the monitor to adjust the image settings 2 3 1 Front Panel Button Description 1 Up Down Use the Up increase and Down decrease keys to adjust items in the OSD menu 2 OK Use the OK button to confirm your selection 3 Back Use the Back button to go back to the previous menu ...

Page 36: ...rp 27 Monitor Brightness Contrast Color Display Input Source 75 75 Menu Personalize Others 2 Press the and buttons to move between options As you move from one icon to another the option name is highlighted 3 Press the or or button once to activate the highlighted option 4 Press the and buttons to select the desired parameter 5 Press to enter the slide bar and then use the or button according to t...

Page 37: ...htness Contrast Adjust the Brightness first and then adjust Contrast only if further adjustment is necessary Press the button to increase contrast and press the button to decrease contrast between 0 and 100 Contrast adjusts the difference between darkness and lightness on the monitor Input Source Use the Input Source menu to select between different video inputs that are connected to your monitor ...

Page 38: ...o Select for USB C Allows you to set Auto Select for USB Type C to Prompt for Multiple Inputs always show Switch to USB Type C Video Input message for user to choose whether to switch or not Yes The monitor always switch to USB Type C video without asking while USB Type C connected No The monitor will NOT auto switch to USB Type C video from another available input Reset Input Source Resets your m...

Page 39: ...Set the screen about 20 to 28 in 50 70 cm from your eyes Blink frequently to moisten or rewet your eyes when working with the monitor Take regular and frequent breaks for 20 minutes every two hours Look away from your monitor and gaze at a distant object at 20 feet away for at least 20 seconds during the breaks Perform stretches to relieve tension in the neck arm back shoulders during the breaks M...

Page 40: ...using the USB Type C DP or HDMI cable YPbPr Select this option if your DVD player supports only YPbPr output Dell UltraSharp 27 Monitor Input Color Format Preset Modes Reset Color RGB YPbPr Brightness Contrast Color Display Input Source Menu Personalize Others Hue Use or to adjust the hue from 0 to 100 NOTE Hue adjustment is available only for Movie and Game mode Saturation Use or to adjust the sa...

Page 41: ...gh Dynamic Range automatically enhances the display output by adjusting the settings optimally to resemble life like visuals Desktop This is the default mode This mode is more suitable for general usage of the monitor with a desktop computer Movie HDR Use this mode during playback of HDR video content to expand the contrast ratio brightness and color palette It matches the video quality with real ...

Page 42: ...t the settings of the OSD such as the languages of the OSD the amount of time the menu remains on screen and so on Dell UltraSharp 27 Monitor Brightness Contrast Color Display Input Source English Rotation Language Transparency Timer 20 20 s Lock Reset Menu Disable Menu Personalize Others Language Set the OSD display to one of eight languages English Spanish French German Brazilian Portuguese Russ...

Page 43: ...ansparency Timer Lock Reset Menu Power Button Menu Power Buttons Disable Menu Buttons Menu Personalize Others Menu Buttons Through OSD to lock the Menu buttons Power Button Through OSD to lock the Power button Menu Power Buttons Through OSD to lock the all of Menu and Power buttons Disable Press and hold the button on the left of the power button for 4 seconds Reset Menu Restore the menu settings ...

Page 44: ...ontrast Input Source Aspect Ratio Smart HDR Rotation set as shortcut key 2 Power Button LED Allows you to set the state of the power light to save energy USB C Charging 90W Allows you to enable or disable Always On USB Type C Charging function during monitor Power Off mode NOTE Enabling this option on the monitor allows you to charge your notebook through the USB Type C cable C to C even when the ...

Page 45: ...ch as the DDC CI LCD conditioning and so on Display Info Displays the monitor s current settings DDC CI DDC CI Display Data Channel Command Interface allows you to adjust the monitor settings using software on your computer Select Off to turn off this feature Enable this feature for best user experience and optimum performance of your monitor Dell UltraSharp 27 Monitor Off On LCD Conditioning DDC ...

Page 46: ...ag Displays the Service Tag The Service Tag is a unique alphanumeric identifier that allows Dell to identify the product specifications and access warranty information NOTE The Service Tag is also printed on a label located at the back of the cover Reset Others Restores other settings such as DDC CI to factory defaults Factory Reset Restores all preset values to the factory default settings These ...

Page 47: ... it is receiving from the computer See Monitor Specifications for the Horizontal and Vertical frequency ranges addressable by this monitor Recommended mode is 3840 x 2160 You can see the following message before the DDC CI function is disabled U2720Q U2720QM Dell UltraSharp 27 Monitor The function of adjusting display setting using PC application will be disabled Do you wish to disable DDC CI func...

Page 48: ... connected a floating dialog box as shown below appears U2720Q U2720QM Dell UltraSharp 27 Monitor The display will go into Power Save Mode in 4 minutes No HDMI Cable www dell com support U2720Q U2720Q or Dell UltraSharp 27 Monitor The display will go into Power Save Mode in 4 minutes No DP Cable www dell com support U2720Q U2720Q or Dell UltraSharp 27 Monitor The display will go into Power Save Mo...

Page 49: ...ormance Please disconnect any USB storage device to your monitor during the switching process up to 12 seconds Do you want to continue Yes No Dell UltraSharp 27 Monitor U2720QM If your PC is not DP 1 4 this option will result in reduced screen performance Please disconnect any USB storage device to your monitor during the switching process up to 12 seconds Do you want to continue Yes No When you s...

Page 50: ...27 Monitor Are you sure you want to reset to default settings Yes No U2720Q Dell UltraSharp 27 Monitor Are you sure you want to reset to default settings Yes No U2720QM When you select Yes to reset to default settings the following message will appear U2720Q U2720QM Dell UltraSharp 27 Monitor Easy Initial Setup Select Yes to enable the following function s Always on USB C Charging Yes No U2720Q Wh...

Page 51: ...g dialog box should appear on screen against a black background if the monitor cannot sense a video signal and is working correctly While in self test mode the power LED remains white Also depending upon the selected input one of the dialogs shown below will continuously scroll through the screen U2720Q U2720QM Dell UltraSharp 27 Monitor The display will go into Power Save Mode in 4 minutes No HDM...

Page 52: ...ode in 4 minutes No USB Type C Cable www dell com support U2720QM U2720QM 4 This box also appears during normal system operation if the video cable becomes disconnected or damaged 5 Turn off your monitor and reconnect the video cable then turn on both your computer and the monitor If your monitor screen remains blank after you use the previous procedure check your video controller and computer bec...

Page 53: ...om the back of the computer or monitor The monitor then goes into the self test mode 3 Press and hold Button 4 for 4 seconds in lock Select Option Select the self inspection icon and press A gray screen appears 4 Carefully inspect the screen for abnormalities 5 Press Button 1 on the front panel again The color of the screen changes to red 6 Inspect the display for any abnormalities 7 Repeat steps ...

Page 54: ...the Input Source menu No video at HDMI DisplayPort USB Type C port When connected to some dongle docking device at the port there is no video when unpluging pluging the Thunderbolt cable from the notebook Unplug the HDMI DisplayPort USB Type C cable from dongle docking device then plug the docking Thunderbolt cable to the notebook Plug the HDMI DisplayPort USB Type C cable 7 seconds later Missing ...

Page 55: ...at comes with the package is used If the above steps fail choose the resolution 3840 x 2160 from the Display Properties to force the proper HDR signaling Missing Color Picture missing color Perform monitor self test Ensure that the video cable connecting the monitor to the computer is connected properly and is secure Check for bent or broken pins in the video cable connector Wrong Color Picture co...

Page 56: ...e does not fill the entire screen The picture cannot fill the height or width of the screen Due to different video formats aspect ratio of DVDs the monitor may display in full screen Run the built in diagnostics No image when using USB Type C connection to computer laptop and so on Black screen Verify if the USB Type C interface of the device can support DP alternate mode Verify if the device requ...

Page 57: ...pter or the adapter that comes with the product Ensure that the USB Type C cable is not damaged No image when using DP connection to the PC Black screen Verify which DP standard DP 1 1a or DP 1 4 is your Graphics Card certified to Download and install the latest graphics card driver Some DP 1 1a graphics card cannot support DP 1 4 monitors Go to OSD menu under Input Source selection press and hold...

Page 58: ...ww dell com regulatory_compliance Contacting Dell NOTE If you do not have an active Internet connection you can find contact information on your purchase invoice packing slip bill or Dell product catalog Dell provides several online and telephone based support and service options Availability varies by country and product and some services may not be available in your area To get online Monitor su...

Page 59: ...ck on the desktop and click Display Settings 2 Click Advanced display settings 3 Click the dropdown list of Resolution and select 3840 x 2160 4 Click Apply If you do not see the recommended resolution as an option you may need to update your graphics driver Please choose the scenario below that best describes the computer system you are using and follow the given steps Dell computer 1 Go to www de...

Page 60: ...After installing the drivers for your graphics adapter attempt to set the resolution to 3840 x 2160 again In Windows 10 1 Right click on the desktop and click Display Settings 2 Click Advanced display settings 3 Click Display adapter properties 4 Identify your graphics controller supplier from the description at the top of the window e g NVIDIA AMD Intel etc 5 Refer to the graphic card provider we...

Page 61: ...l screen cleaning tissue or solution suitable for the anti static coating Do not use benzene thinner ammonia abrasive cleaners or compressed air Use a lightly dampened soft cloth to clean the monitor Avoid using detergent of any kind as some detergents leave a milky film on the monitor If you notice white powder when you unpack your monitor wipe it off with a cloth Handle your monitor with care as...

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