Dell UltraSharp U2723QX Monitor Usage and Troubleshooting Guide
概要: Learn how to use and troubleshoot issues that are related to the Dell UltraSharp U2723QX Monitor.
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For help with video or display issues such as: no video or no display, blank or black screen, flickering, resolution or color issues, horizontal or vertical lines, so on, see the expanding section below.
The key features of Dell U2723QX monitor are:
- 68.47 cm (27.0 in.) active area display (Measured diagonally).
- 3840 x 2160 (16:9) resolution, plus full-screen support for lower resolutions.
- Tilt, swivel, pivot, and vertical extension adjustment capabilities.
- Removable stand.
- Video Electronics Standards Association (VESA) 100 mm mounting holes for flexible mounting solutions.
- Allow user to switch USB KVM function in PBP mode.
- Ultrathin bezel minimizes the bezel gap in multimonitor usage, enabling easier setup with an elegant viewing experience.
- Supports Picture By Picture (PBP) and Picture in Picture (PIP) Select mode.
- Optimize eye comfort with a flicker-free screen and low blue light feature to minimize hazard blue light emission.
- Ultrathin bezel minimizes bezel gap in multimonitor setup.
- Single USB-C to supply power to compatible laptop while receiving video signal.
- USB-C and RJ45 ports enable a single-cable, network-connected experience.
- Plug and play capability if supported by your computer.
- On-Screen Display (OSD) adjustments for ease of set-up and screen optimization.
- HDMI or DP connection supports 10-bit color at 60 Hz. USB Type-C connection supports 8-bit color at 60 Hz.
- Single USB Type-C with Alternate mode DP 1.4, Power Delivery up to 90 W to a compatible computer.
- Power and OSD buttons lock.
- Security lock slot.
- Upto 0.5 W in the Off Mode
- The Monitor allows multiple monitors that are daisy chained via DisplayPort to synchronize a pre-defined group of OSD settings in the background by MultiMonitor Sync (MMS).
- Premium Panel Exchange for peace of mind.
- The Monitor use Low Blue Light panel and compliance with TUV Rheinland (Hardware Solution) at factory reset/default setting model (Preset mode: Standard).
- Decreases the level of hazard blue light emitted from the screen to make viewing more comfortable for your eyes.
- The Monitor adopts Flicker-Free technology, which clears the eye visible flicker, brings comfort viewing experience and preventing users suffer from eye strain and fatigue.
- The Monitor is designed with Dell Power Button Sync (DPBS) feature to control computer power state from monitor power button.
NOTE: Computers that support DPBS are the Dell OptiPlex 7090 and 3090 Ultra platform.
This section provides some specifications of the Dell U2723QX monitor. To learn more about the specifications of Dell U2723QX monitor, see the User's Guide at the Dell Manuals website.
| Panel technology |
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| Maximum resolution |
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| Viewing angle |
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| Contrast ratio |
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| Response time |
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| Color gamut |
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| Color depth |
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| Ports and connectors |
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Ensuring that your Dell monitor is set up properly. Assembling the monitor stand and setting up the monitor ergonomically. Connecting the cables and organizing them. These will only help make the viewing experience the best it possibly can be.
Attaching the stand
The standard monitor stand is detached when the monitor is shipped from the factory. To learn more about attaching the standard monitor stand. See the Setting Up the Monitor section in the User's Guide of your Dell U2723QX monitor.
To learn how to set up any other stand with a monitor, see the respective stand setup guide for setup instructions.
Caution: Do not remove the monitor from the packaging box before attaching the stand.
Note: The Dell U2723QX monitor is heavy; handle with extreme care. It is recommended to have two people to lift or move this monitor.
Ergonomics
Where you put your monitor is almost as important as what model you buy. The monitor should be directly in front of you, at an arm’s length away (between 20-40 inches from your eyes). The top edge of the screen should be at eye level when you are sitting comfortably. You may adjust your chair height or the height of the monitor to achieve this.
Connecting your monitor to the computer
To connect your Dell U2723QX monitor to your computer:
- Turn off your computer and disconnect the power cable.
- Connect the DisplayPort, HDMI, or USB Type-C cable to the corresponding video or display port on the back of your computer.
- Connect the USB upstream cable to the monitor and computer.
Note: Dell U2723QX supports display over USB Type-C port with Alternate mode DP 1.4. Ensure that the USB Type-C on your computer supports Alternate mode DP 1.2 or above.
To learn more about connecting your monitor to the computer, see the Dell knowledge-base article: How to Connect a Monitor to a Dell Computer
Before you rotate the display, extend the display vertically until the top of the stand riser. Then tilt the display backward until the maximum to avoid hitting the bottom edge of the display.
Caution: Dell U2723QX setup must comply with the recommended panel orientation and working angle only. Setting up the monitor in an orientation that is not recommended may damage the monitor and/or cause a safety hazard.
When setting up your Dell U2723QX monitor, ensure that the monitor front panel buttons are on the bottom right.
Using the Tilt, Swivel, and Vertical Extension
Note: This is applicable for a monitor with a stand. When any other stand is bought, see the respective stand setup guide for set-up instructions.
With the stand attached to the monitor, you can tilt and swivel the monitor for the most comfortable viewing angle.
Figure 1: Using tilt, swivel, and vertical extension on Dell U2723QX monitor
When mounted on the wall or on a monitor arm, the set-up must comply to the recommended panel orientation and working angle.
Figure 2: Orientation of Dell U2723QX Monitor
Note: To switch the display setting on your Dell computer between landscape and portrait when rotating the display, download and install the latest graphics driver. To download, go to Dell U2722D Monitor driver and search for the appropriate driver.
Note: When the display is in portrait mode, you may experience performance degradation when using graphic-intensive applications such as 3D gaming.
Configuring the Display Settings on Your Computer after Rotation
After you have rotated the display, complete the procedure given below to configure the display settings on your computer.
- Right-click on the Desktop and click Properties.
- Select the Settings tab and click Advanced.
- If you have an AMD graphics card, select the Rotation tab and set the preferred rotation.
- If you have an nVidia graphics card, click the nVidia tab, in the left-hand column select NVRotate, and then select the preferred rotation.
- If you have an Intel® graphics card, select the Intel graphics tab, click Graphic Properties, select the Rotation tab, and then set the preferred rotation.
Figure 3: Illustration of DP Multi-Stream Transport (MST) Function
Use the joystick at the right rear bottom of the monitor to access the On-Screen Display (OSD) menu of the monitor. To access the On-Screen Display (OSD) menu, press the joystick (Figure 4) at the bottom of the monitor.
Learn more about using the On-Screen Display (OSD) menu. See the Operating Your Monitor section in the User's Guide of Dell U2723QX monitor.
Note: Any changes that you make are automatically saved. Whenever you move to another menu item, exit the OSD menu, or wait for the OSD menu to automatically close.
Figure 4: Dell U2723QX monitor Joystick control
| Function | Description |
|---|---|
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Press Joystick to open the OSD Menu Launcher. |
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For right and left navigation. |
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For up and down navigation. |
Resetting a monitor to factory defaults can help resolve many video or display issues. To reset your Dell U2723QX monitor to factory default settings, follow these instructions:
- Press the Joystick at the right rear bottom of the monitor to open the OSD Menu Launcher.
- Move the Joystick Up to open the Main Menu.
- Move the Joystick Left or Right to select Others and then press the Joystick.
- Move the Joystick Left or Right to select Factory Reset and then press the Joystick.
- Press Joystick to confirm the reset action.
Figure 5: Dell U2723QX Front Panel Buttons
If your Dell monitor has a blank or black screen, fuzzy or blurry image, flickering, distorted or any other screen abnormalities, running a diagnostic test helps determine if the Dell monitor is functioning normally. To learn more about diagnostic options on a Dell monitor, see the Dell knowledge-base article: How do I run diagnostics on a Dell monitor?
It is always essential to isolate the monitor while troubleshooting your computer for the following scenarios:
- No Power - Your computer is not powering ON or showing any signs of power.
- No POST - Your computer is not showing any indication of activity, the screen might be blank and will not display the Dell logo during start-up.
- No Video - You are unable to see any display on the screen, able to hear the windows chime but no display is seen.
Your Dell U2723QX Monitor provides a self-test feature check that allows you to check whether the monitor is functioning properly. If the 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 the video cables (VGA, DVI, HDMI, or DisplayPort) from the back of the computer.
- Turn on the monitor.
- 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 card (GPU) and computer because your monitor is functioning properly.
Your Dell U2723QX monitor has a built-in diagnostic tool. It helps to determine if the screen abnormality you are experiencing is a problem with the monitor or with the video card on your computer.
When you notice screen abnormalities like distortion, clarity, horizontal or vertical lines, color fade, it is always a good practice to isolate the monitor by running the Built-In Diagnostics.
- Ensure that the screen is clean (no dust particles on the surface of the screen).
- Select OSD items of Self-Diagnostics in Others feature.
- Press the Joystick button to start the diagnostics. A gray screen is displayed.
- Carefully inspect the screen for abnormalities.
- Toggle the Joystick once again until a red screen is displayed.
- Inspect the display for any abnormalities.
- Repeat step 5 and step 6 to inspect the display in green, blue, black, and white.
- The test is complete when the white screen appears.
- To exit, toggle the Joystick control again.
Note: If you do not detect any screen abnormalities upon using the built-in diagnostic tool, the monitor is functioning properly. Check the video card (GPU) and the computer.
If you notice any abnormalities during Built-In Diagnostics, you may get the monitor repaired or replaced if it is under warranty by contacting Dell Technical Support.
If you notice any abnormalities during Built-In Diagnostics, you may get the monitor repaired or replaced if it is under warranty by contacting Dell Technical Support.
During the LCD Monitor manufacturing process, it is not uncommon for one or more pixels to become fixed in an unchanging state. Which is hard to see and do not affect the display quality or usability. For more information, see the Dell knowledge-base article Dell LCD Monitor Pixel Guidelines.
This section provides information about troubleshooting steps that can help resolve the most common issues with the Dell U2723QX monitor. Alternatively, to learn more about troubleshooting common issues on Dell monitors, see the Dell knowledge-base article Troubleshooting Display or Video Issues on a Dell Monitor or use our Monitor self-help Guide.
| Common Problem | What User Experiences | Possible Solution |
|---|---|---|
| No Video - Power LED Off | No picture |
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| No Video - Power LED On | No picture or no brightness. |
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| Missing Pixels | LCD screen has spots. |
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| Stuck-On/Off Pixels | LCD screen has bright spot. |
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| Brightness Problems | Picture too dim or too bright. |
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| Safety-Related Issues | Visible signs of smoke or sparks. |
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| Intermittent Problems | Monitor malfunctions on and off. |
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| Missing Color | Picture does not have color. |
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| Wrong Color | Picture color is not good. |
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| Image Retention from a Static Image Left on the Monitor for a Long Period | Faint shadow from the static image appears on the screen. |
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| Screen image is too small. | Image is centered on screen, but does not fill entire viewing area. |
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| No Input Signal when user controls are pressed. | No picture, the power LED light is white. |
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| The picture does not fill the entire screen. | The picture cannot fill the height or width of the screen. |
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| No image when using DP connection to the computer. | Black screen |
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| No image when using USB-C connection to computer, laptop, and so on. | Black screen |
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| No charging when using USB-C connection to computer, laptop, and so on | No charging |
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| Intermittent charging when using USB-C connection to computer, laptop, and so on. | Intermittent charging |
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| The LAN port is not functioning. | OS setting or cable connection issue |
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| Troubleshooting USB Issues | ||
|---|---|---|
| Specific Symptoms | What User Experiences | Possible Solution |
| USB interface is not working. | USB peripherals are not working. |
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| Super-Speed USB 3.2 Gen2 interface is slow. | Super-Speed USB 3.2 Gen2 peripherals working slowly or not working at all. |
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| Wireless USB peripherals stop working when a USB 3.0 device is plugged in. | Wireless USB peripherals responding slowly or only working as the distance between itself and its receiver decreases. |
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To learn more about how to view or download the User Guides and Manuals for your Dell product. See the Dell knowledge-base article Manuals and Documentation for your Dell Product.
- Dell U2723QX – User’s Guide
- Dell U2723QX – Quick Setup Guide
- Dell U2723QX – Dell Display Manager User’s Guide
Frequently asked questions
Using Windows Display Settings
In Windows 11, Windows 10, Windows 8 or 8.1 and Windows 7:
- For Windows 8 and Windows 8.1 only, select the Desktop tile to switch to classic desktop view.
- Right-click on the desktop and click Screen Resolution.
- Click the dropdown list of the Screen Resolution and select 3840 x 2160.
- Click OK
Using Nvidia Control Panel
To change the resolution using the Nvidia Control Panel:
- Right-click on the desktop and click Nvidia Control Panel.
- Click the + symbol next to Display on the left pane.
- Select Change Resolution under Display.
- In the dropdown menu on the right pane, select the resolution 3840 x 2160.
- Click Apply.
Using AMD Catalyst Control Center
To change the resolution using the AMD Catalyst Control Center:
- Right-click on the desktop and click AMD Catalyst Control Center.
- Click the + symbol next to Display on the left pane.
- Select Change Resolution under Display.
- In the dropdown menu on the right pane, select the resolution 3840 x 2160.
- Click Apply.
Note: If you do not see the recommended resolution as an option. You may need to update the video card (GPU) driver by visiting the Dell Drivers & Downloads website or the video card (GPU) manufacturers website. To learn how to download and update a device driver, see the Dell knowledge-base article: How do I download and install a device driver?
To reset the Dell U2723QX Monitor to factory defaults, see the Reset to Factory Settings section of this article.
The Dell U2723QX monitor has two built-in diagnostics that are available:
- Self-Test Feature Check - The self-test feature check on the Dell U2723QX monitor allows you to check whether the monitor is functioning properly.
- Built-In Self-Test - The Dell U2723QX monitor has a built-in self-test that helps you identify if the screen abnormality is with the monitor or the video card (GPU) on your computer. When you notice screen abnormalities like distortion, clarity, horizontal or vertical lines, color fade. It is always a good practice to isolate the monitor by running the Built-In Diagnostics.
To learn how to run a diagnostic test, see the Running Diagnostics on Dell U2723QX Monitor section of this Dell knowledge-base article.
The Troubleshooting section of this Dell knowledge-base article provides information about troubleshooting common issues with the Dell U2723QX monitor. The section has troubleshooting steps on how to resolve power issues, video issues, color or clarity issues, distortion issues, horizontal or vertical lines, brightness issues or pixel issues and so on.
To navigate the On-Screen Display (OSD) menu, use the Joystick control on the monitor. To access the On-Screen Display (OSD) menu, press Joystick on the monitor.
For more information about using the On-Screen Display (OSD) menu and different menu options. See the Operating Your Monitor section in the User's Guide of your Dell U2723QX monitor.
Additional monitor information like the model number, firmware version and Service Tag can be accessed from the monitor's OSD (On-Screen Display).
- Press the Joystick at the right rear bottom of the monitor to open the On-Screen Display (OSD) Menu.
- Move the Joystick Left or Right to select Others and then press the Joystick.
- Move the Joystick Left or Right to select Display Info and then press the Joystick.
- Move the Joystick Left or Right to highlight Model Number or Firmware Version option in the menu and press Joystick to select.
USB Type-C port on your Dell U2723QX supports USB Power Delivery, Data, and DisplayPort video signal. The USB Type-C port can be used for video and data signal, and supply power (90 W) to a compatible laptop using a single USB Type-C cable that is provided with the monitor.
Note: Dell U2723QX can supply power over the USB Type-C cable only to a compatible laptop that supports Power Delivery (PD) over USB Type-C. Not all laptop PCs with USB Type-C support Power Delivery, for more information see the User Manual or contact your laptop manufacturer.
Note: USB Type-C power delivery-compliant port (PD version 2.0) delivers up to 90 W of power. If your laptop requires more than 90 W to operate and the battery is drained. It is recommended you use the standard AC adapter of the laptop to power on and charge the laptop battery.
If you are using a Dell laptop that supports charging through USB Type-C. It is recommended to update the BIOS and Video or Graphics card (GPU) driver. To learn how to download and update a device driver, see the Dell knowledge-base article: How do I download and install a device driver?
対象製品
Dell U2723QX文書のプロパティ
文書番号: 000196783
文書の種類: How To
最終更新: 29 4月 2022
バージョン: 3
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