Dell C2423H Dell C2723H Video Conferencing Monitor User’s Guide Model: C2423H/C2723H Regulatory model: C2423Hb/C2723Hb
NOTE: A NOTE indicates important information that helps you make better use of your computer. CAUTION: A CAUTION indicates potential damage to hardware or loss of data if instructions are not followed. WARNING: A WARNING indicates a potential for property damage, personal injury, or death. Copyright © 2022 Dell Inc. or its subsidiaries. All rights reserved. Dell, EMC, and other trademarks are trademarks of Dell Inc. or its subsidiaries.
Contents Safety Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . 6 About Your Monitor. . . . . . . . . . . . . . . . . . . . . . . . . . 7 Product Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Identifying Parts and Controls . . . . . . . . . . . . . . . . . . . . . . 11 Front View. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11 Back View . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Maintenance Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Cleaning Your Monitor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31 Setting Up the Monitor . . . . . . . . . . . . . . . . . . . . . 33 Setting Up the Stand . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating the Monitor Webcam. . . . . . . . . . . . . . . . . . . . Organizing Your Cables . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the Navigation keys . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 Accessing the Menu System. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 51 OSD Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Initial Setup. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 OSD Warning Messages . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63 Setting the Maximum Resolution. . . . . . . . . . . . . . . .
Safety Instructions WARNING: Use of controls, adjustments, or procedures other than those specified in this documentation may result in exposure to shock, electrical hazards, and/or mechanical hazards. • Place the monitor on a solid surface and handle it carefully. The screen is fragile and can be damaged if dropped or hit sharply. • Always be sure that your monitor is electrically rated to operate with the AC power available in your location. • Keep the monitor in room temperature.
About Your Monitor Package Contents Your monitor ships with the components shown in the table below. If any component is missing, contact Dell technical support. For more information, see Contact Dell. NOTE: Some items may be optional and may not ship with your monitor. Some features may not be available in certain countries. NOTE: If you are attaching a stand that you purchased from any other source, follow the set up instructions that were included with the stand.
Power Cable (varies by country) DisplayPort to DisplayPort cable Cable length: 1.80 M HDMI Cable Cable length: 1.80 M SuperSpeed USB 5 Gbps (USB 3.2 Gen1) Type-A to Type-B Upstream Cable (Enables the USB Ports on the Monitor) Cable length: 1.
Product Features The Dell C2423H/C2723H monitor has an active matrix, Thin-Film Transistor (TFT), Liquid Crystal Display (LCD) and LED backlight. The monitor features include: • C2423H: 60.47 cm (23.80 in.) viewable area (measured diagonally). 1920 x 1080 (16:9) resolution, plus full-screen support for lower resolutions. • C2723H: 68.58 cm (27.00 in.) viewable area (measured diagonally). 1920 x 1080 (16:9) resolution, plus full-screen support for lower resolutions. • Built-in speakers (2 x 5 W).
• 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. • Optimize eye comfort with a flicker-free screen and low blue light feature. WARNING: The possible long-term effects of blue light emission from the monitor may cause damage to the eyes, including eye fatigue, digital eye strain, and so on.
Identifying Parts and Controls Front View Front View with Monitor Stand No. Description Use 1 Microphones Monitor microphones (Mic). 2 IR LED Indicator of infrared (IR). 3 Webcam lens Transmits your image in a video conference. 4 Webcam LED indicator Indicator of Webcam. It will light up in white when webcam is in use. 5 Speaker mute & LED Press to mute and unmute speaker. LED will light up in static white when speaker is muted. LED will go dark when speaker is enabled/unmuted.
7 Volume up & LED Short press for 2 unit volume increment. Long press for continuous volume increment. 8 Microphone mute Press to mute and unmute microphone. & LED LED will light up in static red when mic is muted. LED will go dark when mic is enabled/unmuted. 9 Power LED indicator Solid white light indicates that the monitor is turned on and functioning normally. Breathing white light indicates that the monitor is in Standby Mode. Back View Back View with Monitor Stand No.
6 Joystick Use to control the OSD menu. (For more Information, see Operating the Monitor) 7 Cable-management slot Use to organize cables by inserting them through the slot. Bottom View Bottom View without Monitor Stand No. Description Use 1 Power connector Connect the power cable (shipped with your monitor). 2 Security lock slot Secures the monitor with security lock (security lock not included). 3 HDMI port Connect your computer with the HDMI cable.
6 DisplayPort (out) DisplayPort output for MST (multi-stream transport) capable monitor. To enable MST, see Connecting the Monitor for DP MultiStream Transport (MST) Function. NOTE: Remove the rubber plug when using DisplayPort out connector. 7 SuperSpeed USB 5 Gbps (USB 3.2 Gen1) Type-B upstream port Connect the USB cable that comes with your monitor to the computer. Once this cable is connected, you can use the USB connectors on the monitor. 8 SuperSpeed USB 5 Gbps (USB 3.
Monitor Specifications Model C2423H C2723H Screen type Active matrix - TFT LCD Panel technology In-Plane Switching Technology Aspect ratio 16:9 Viewable Image Diagonal 604.70 mm (23.80 in.) 685.80 mm (27.00 in.) Width (active area) 527.04 mm (20.75 in.) 597.89 mm (23.54 in.) Height (active area) 296.46 mm (11.67 in.) 336.31 mm (13.24 in.) Total area 156246.28 mm (242.18 in.2) Pixel pitch 0.2745 mm x 0.2745 mm 0.3114 mm x 0.3114 mm Pixel per inch (PPI) 92.53 81.
Connectivity • 1 x DisplayPort version 1.2* (HDCP 1.4) • 1 x HDMI port version 1.4 (HDCP 1.4) • 1 x DisplayPort (Out) with MST • 1 x USB Type-B (USB 3.2 Gen1) upstream port • 2 x SuperSpeed USB 5 Gbps (USB 3.2 Gen1) downstream ports • 2 x SuperSpeed USB 5 Gbps (USB 3.2 Gen1) downstream ports with BC1.2 charging capability at 2 A (maximum) • 1 x 3.5 mm headphone jack Border width (edge of monitor to active area) 5.37 mm (Top) 5.99 mm (Top) 5.38 mm (Left/Right) 6.01 mm (Left/Right) 17.
Supported Video Modes Model C2423H/C2723H Video display capabilities (HDMI 480p, 576p, 720p, 1080i*, 1080p & DisplayPort) *Supported by HDMI input only. Preset Display Modes Display Mode Horizontal Frequency (kHz) Vertical Frequency (Hz) Pixel Clock (MHz) Sync Polarity (Horizontal /Vertical) VESA, 720 x 400 31.47 70.08 28.32 -/+ VESA, 640 x 480 31.47 60.00 25.17 -/- VESA, 640 x 480 37.50 75.00 31.50 -/- VESA, 800 x 600 37.88 60.32 40.00 +/+ VESA, 800 x 600 46.88 75.00 49.
Multi-Stream Transport (MST) Modes MST Source Monitor Maximum Number of External Monitors that can be Supported 1920 x 1080 at 60 Hz • 3 1920 x 1080 at 60 Hz Unified Communications (UC) Platform Compatibility List The table below highlights the call functions that work on the Dell Video Conferencing Monitor – C2423H and C2723H when using the following UC platforms#.
Electrical Specifications Model C2423H Video input signals • HDMI 1.4*/DisplayPort 1.2**, 600 mV for each differential line, 100 ohm input impedance per differential pair AC input voltage/ frequency/current 100 VAC to 240 VAC / 50 Hz or 60 Hz ± 3 Hz / 1.5 A (typical) Inrush current • 120 V: 30 A (Max.) at 0°C (cold start) • 120 V: 40 A (Max.) at 0°C (cold start) • 240 V: 60 A (Max.) at 0°C (cold start) • 240 V: 80 A (Max.) at 0°C (cold start) Power consumption C2723H • 0.3 W (Off mode)1 • 0.
NOTE: This monitor is ENERGY STAR certified. This product qualifies for ENERGY STAR in the factory default settings which can be restored by “Factory Reset” function in the OSD menu. Changing the factory default settings or enabling other features may increase power consumption that could exceed the ENERGY STAR specified limit. Webcam and Microphone Specifications Model C2423H/C2723H Lens Field of view 88.9° for 2560 x 1920 Focus mode Fixed Focus Focus area 35 cm ~ 1.
Physical Characteristics Model C2423H C2723H Signal Cable Type • Digital: DisplayPort, 20 pins • Digital: HDMI, 19 pins • Universal Series Bus: USB Type-A to B NOTE: Dell monitors are designed to work optimally with the video cables that are shipped with your monitor.
Weight without stand assembly (For wall mount or VESA mount considerations - no cables) 3.83 kg (8.44 lb) 5.04 kg (11.11 lb) Weight of stand assembly 1.76 kg (3.88 lb) 1.76 kg (3.88 lb) Front frame gloss 2-4 Monitor Environmental Characteristics Model C2423H C2723H Compliant Standards • ENERGY STAR certified monitor • EPEAT registered where applicable. EPEAT registration varies by country. See www.epeat.net for registration status by country.
Thermal Dissipation • 279.78 BTU/hour (maximum) • 290.03 BTU/hour (maximum) • 40.94 BTU/hour (typical) • 45.04 BTU/hour (typical) Pin Assignments DP Port (in) Pin Number 20-pin Side of the Connected Signal Cable 1 ML3 (n) 2 GND 3 ML3 (p) 4 ML2 (n) 5 GND 6 ML2 (p) 7 ML1 (n) 8 GND 9 ML1 (p) 10 ML0 (n) 11 GND 12 ML0 (p) 13 GND 14 GND 15 AUX (p) 16 GND 17 AUX (n) 18 Hot Plug Detect 19 Re-PWR 20 +3.
DP Port (out) Pin Number 20-pin Side of the Connected Signal Cable 1 ML0 (p) 2 GND 3 ML0 (n) 4 ML1 (p) 5 GND 6 ML1 (n) 7 ML2 (p) 8 GND 9 ML2 (n) 10 ML3 (p) 11 GND 12 ML3 (n) 13 CONFIG1 14 CONFIG2 15 AUX CH (p) 16 GND 17 AUX CH (n) 18 Hot Plug Detect 19 Return 20 DP_PWR 24 │ About Your Monitor
HDMI Port Pin Number 19-pin Side of the Connected Signal Cable 1 TMDS DATA 2+ 2 TMDS DATA 2 SHIELD 3 TMDS DATA 2- 4 TMDS DATA 1+ 5 TMDS DATA 1 SHIELD 6 TMDS DATA 1- 7 TMDS DATA 0+ 8 TMDS DATA 0 SHIELD 9 TMDS DATA 0- 10 TMDS CLOCK+ 11 TMDS CLOCK SHIELD 12 TMDS CLOCK- 13 CEC 14 Reserved (N.C.
Universal Serial Bus (USB) Interface This section gives you information about the USB ports that are available on the monitor. NOTE: This monitor is SuperSpeed USB 5 Gbps (USB 3.2 Gen1) and High-speed USB 2.0 compatible. USB 3.2 Gen1 Transfer Speed Data Rate Power Supported SuperSpeed 5 Gbps 4.5 W High speed 480 Mbps 4.5 W Full speed 12 Mbps 4.5 W USB 2.0 Transfer Speed Data Rate Power Supported High speed 480 Mbps 2.5 W Full speed 12 Mbps 2.5 W Low speed 1.5 Mbps 2.
6 SSTX+ 7 GND 8 SSRX- 9 SSRX+ USB Downstream Connector Pin Number 9-pin Side of the Connector 1 VCC 2 D- 3 D+ 4 GND 5 SSRX- 6 SSRX+ 7 GND 8 SSTX- 9 SSTX+ USB Ports • 1 USB Type-B (USB 3.2 Gen1) upstream port - bottom • 4 SuperSpeed USB 5 Gbps (USB 3.2 Gen1) Type-A downstream ports- 2 at bottom, 2 at rear Power Charging Port - the ports with battery icon supports fast current charging capability if the device is BC 1.2 compatible. NOTE: SuperSpeed USB 5 Gbps (USB 3.
Plug and Play Capability You can connect the monitor to any Plug and Play-compatible system. The monitor automatically provides the computer system with its Extended Display Identification Data (EDID) using Display Data Channel (DDC) protocols so that the system can configure itself and optimize the monitor settings. Most monitor installations are automatic; you can select different settings if desired. For more information about changing the monitor settings, see Operating the Monitor.
• Adjust the tilt of the monitor, its contrast, and brightness settings. • Adjust the ambient lighting around you (such as overhead lights, desk lamps, and the curtains or blinds on nearby windows) to minimize reflections and glare on the monitor screen. • Use a chair that provides good lower-back support. • Keep your forearms horizontal with your wrists in a neutral, comfortable position while using the keyboard or mouse. • Always leave space to rest your hands while using the keyboard or mouse.
Handling and Moving Your Display To ensure the monitor is handled safely when lifting or moving it, follow the guidelines mentioned below: • Before moving or lifting the monitor, turn off your computer and the monitor. • Disconnect all cables from the monitor. • Place the monitor in the original box with the original packing materials. • Hold the bottom edge and the side of the monitor firmly without applying excessive pressure when lifting or moving the monitor.
• When lifting or moving the monitor, do not turn the monitor upside down while holding the stand base or stand riser. This may result in accidental damage to the monitor or cause personal injury. Maintenance Guidelines Cleaning Your Monitor Improper cleaning methods can result in physical damage to Dell monitors. Physical defects may affect the screen and body of the monitor. CAUTION: Read and follow the Safety Instructions before cleaning the monitor.
NOTE: Using cleaner may cause changes in the appearance of the monitor, such as color fading, milky film on the monitor, deformation, uneven dark shade, and screen surface peeling. NOTE: Monitor damage due to improper cleaning methods and the use of benzene, thinner, ammonia, abrasive cleaners, alcohol, compressed air, detergent of any kind will lead to a Customer Induced Damage (CID). CID is not covered under the standard Dell warranty.
Setting Up the Monitor Setting Up the Stand NOTE: The stand is not factory-installed. NOTE: The following steps are specifically for setting up the stand that is shipped with your monitor. If you are attaching a stand that you purchased from any other source, follow the set up instructions that were included with the stand. To set up the monitor stand: 1. Follow the instructions on the flaps of packaging box to remove the stand from the top cushion that secures it. 2.
3. Align and place the stand riser on the stand base. 4. Open the screw handle at the bottom of the stand base and turn it clockwise to secure the stand assembly. 5. Close the screw handle. 6. Open the protective cover to access the VESA slot on the display.
C2723H NOTE: Before attaching the stand assembly to the display, ensure that the front plate flap is opened to allow space for assembly. 7. Attach the stand assembly to the display. a. Align and slide the tabs on the stand riser into the VESA slot. b. Press the stand down till it snaps into place.
C2723H 8. Hold the stand riser with both hands firmly and lift the monitor. Then place the monitor in an upright position on a flat surface. NOTE: Hold the stand riser firmly when lifting the monitor to avoid any accidental damage.
C2723H 9. Lift the protective cover from the monitor.
Operating the Monitor Webcam When you want to use the monitor built-in webcam, press down on the webcam module and then release. The webcam module will pop up. Organizing Your Cables After attaching all necessary cables to your monitor and computer (See Connecting Your Monitor for cable attachment), organize all cables as shown above. If your cable is not able to reach your PC, you may connect directly to the PC without routing through the slot on the monitor stand.
Securing Your Monitor Using Kensington Lock (optional) The security-lock slot is located at the bottom of the monitor (see Security lock slot). Secure your monitor to a table using the Kensington security lock. For more information on using the Kensington lock (sold separately), see the documentation that is shipped with the lock. NOTE: The image is for the purpose of illustration only. The appearance of the lock may vary.
Connecting the HDMI Cable NOTE: The default out of factory setting is HDMI 1.4. Connecting the DisplayPort (DisplayPort to DisplayPort) Cable NOTE: The default out of factory setting is DP1.2. If the monitor fails to show any content after the DisplayPort cable is connected, follow the procedures below to change the settings to DP1.1: • Press the joystick to open the Menu Launcher. • Toggle the joystick to select Input Source. • Toggle the joystick to highlight DP.
Repeat the above steps to change the DisplayPort format settings if necessary. Connecting the Monitor for DP Multi-Stream Transport (MST) Function NOTE: This monitor supports the DP MST feature. To make use of this feature, your PC Graphics Card must be certified to at least DP1.2 with MST option. NOTE: Remove the rubber plug when using DP out connector. CAUTION: The graphics are used for the purpose of illustration only. Appearance of the computer may vary.
Using the Tilt, Swivel, and Vertical Extension NOTE: The following instructions are applicable only for attaching the stand that was shipped with your monitor. If you are attaching a stand that you purchased from any other source, follow the set up instructions that were included with the stand. Tilt, Swivel With the stand attached to the monitor, you can tilt and swivel the monitor for the most comfortable viewing angle. NOTE: The stand is not installed at the factory when shipped.
Vertical Extension NOTE: The stand extends vertically up to 150 mm. The figure below illustrates how to extend the stand vertically. Rotating the Monitor Before you rotate the monitor, your monitor should be fully vertically extended (Vertical Extension) and fully tilted up to avoid hitting the bottom edge of the monitor.
Rotate Clockwise Rotate Counterclockwise 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 driver, go to www.dell.com/support and see the Download section for Video Drivers for latest driver updates. NOTE: When in the Portrait View Mode, you may experience performance degradation in graphic-intensive applications (3D Gaming and etc.).
Adjusting the Rotation Display Settings of Your System After you have rotated your monitor, you need to complete the procedure below to adjust the Rotation Display Settings of your system. NOTE: If you are using the monitor with a non-Dell computer, you need to go the graphics driver website or your computer manufacturer website for information on rotating the 'contents' on your display. To adjust the Rotation Display Settings: 1. Right-click on the desktop and click Properties. 2.
Removing the Monitor Stand NOTE: To prevent scratches on the LCD screen when removing the stand, ensure that the monitor is placed on a soft, clean surface. NOTE: The following instructions are applicable only for attaching the stand that was shipped with your monitor. If you are attaching a stand that you purchased from any other source, follow the set up instructions that were included with the stand. To remove the stand: 1. Place the monitor on a soft cloth or cushion. 2.
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. For more information, see the documentation that shipped with the wall mounting kit. NOTE: For use only with UL or CSA or GS-listed wall mount bracket with minimum weight or load bearing capacity of 15.32 kg (C2423H)/ 20.16 kg (C2723H).
Operating the Monitor Power On the Monitor Press the Power Button to turn On the monitor. Using the Joystick Control To modify the OSD adjustments using the joystick control on the rear end of the monitor, do the following: 1. Press the joystick button to launch the OSD Menu Launcher. 2. Move the joystick up/down/left/right to toggle between the OSD menu options.
Joystick Functions Function Description Press joystick to open the OSD Menu Launcher. • For right and left navigation. • Move right to enter the submenu. • Move left to exit from the submenu. • For up and down navigation. • Toggle between the menu items. • Increases (up) or decreases (down) the parameters of the selected menu item. Using the Main Menu Using the Menu Launcher Press the joystick to open the OSD Menu Launcher.
The following table describes the Menu Launcher functions: Menu Launcher Details Menu Launcher Icon Description Opens the On-Screen Display (OSD). See Accessing the Menu System. Main Menu Adjusts the aspect ratio of your screen. Aspect Ratio (Shortcut Key 1) • Sets the Input Source. Input Source (Shortcut Key 2) • Select Auto from Input Source menu to scan for available input sources. Allows you to choose from a list of preset color modes.
Using the Navigation keys When the OSD main menu is active, move the joystick to configure the settings, following the navigation keys displayed below the OSD. After you change the settings, press the joystick to save the changes before proceeding to another menu or exit the OSD menu. NOTE: To exit the current menu item and return to the previous menu, move the joystick to the left until you exit.
Contrast Adjusts the Brightness first, and then adjust the Contrast only if further adjustment is necessary. Toggle the joystick up to increase the contrast and toggle the joystick down to decrease the contrast (Range: 0 - 100). The Contrast function adjusts the degree of difference between darkness and lightness on the monitor screen. Input Source DP HDMI Auto Select Rename Inputs Selects between the different video signals that may be connected to your monitor.
Reset Input Source Color Preset Modes Press the joystick to reset all settings under the Input Source menu to the factory preset values. Adjusts the color setting mode. Allows you to choose from a list of preset color modes. • Standard: Default Color setting. This monitor uses a low blue light panel, and is certified by TUV to reduce blue light output and create a more relaxing and less stimulating image while reading content on the screen.
• Movie: Ideal for movies. • Game: Ideal for most gaming applications. • Warm: Presents colors at lower color temperatures. The screen appears warmer with a red/yellow tint. • Cool: Presents colors at higher color temperatures. The screen appears cooler with a blue tint. • Custom Color: Allows you to manually adjust the color settings. Toggle the joystick up or down to adjust the RGB color values and create your own preset color mode.
Hue Shifts the color of the video image to green or purple. This is used to adjust the desired flesh tone color. Toggle the joystick up or down to adjust the hue from '0' to '100'. NOTE: Hue adjustment is available only when you select Movie or Game preset mode. Saturation Adjusts the color saturation of the video image. Toggle the joystick up or down to adjust the saturation from '0' to '100'. NOTE: Saturation adjustment is available only when you select Movie or Game preset mode.
MST DP Multi Stream Transport, select On to enable MST (DP Out), select Off to disable the MST function. See Connecting the Monitor for DP Multi-Stream Transport (MST) Function for details. NOTE: When DP upstream cable and DP downstream cable are connected, the OSD will set MST to On automatically. This action will only be done once after Factory Reset or Display Reset. Reset Display Press the joystick to reset all settings under the Display menu to the factory preset values.
• Voice: Load profile ideal for meetings. • Movie: Load profile ideal for movies. • Game: Load profile ideal for gaming. • Music: Load profile ideal for listening to music. Reset Audio & Webcam Press the joystick to reset all settings under the Audio & Webcam menu to the factory preset values. Menu Select this option to adjust the settings of the OSD, such as, the languages of the OSD, the amount of time the menu remains on screen, and so on.
Lock With the control buttons on the monitor locked, you can prevent people from accessing the controls. It also prevents accidental activation in multiple monitors side-by-side setup. • Menu Buttons: All joystick functions are locked and not accessible by the user. • Power Button: Only the Power Button is locked and not accessible by the user. • Menu + Power Buttons: Both the joystick & the Power Button are locked and not accessible by the user. The default setting is Disable.
Personalize Shortcut Key 1 Shortcut Key 2 Shortcut Key 3 Shortcut Key 4 Shortcut Key 5 Allows you to choose a feature from Preset Modes, Brightness/Contrast, Input Source, Aspect Ratio, Volume, Speaker, Microphone, Webcam, Rotation, or Display Info and set it as a shortcut key. Power Button LED Allows you to set the power LED indicator on or off to save energy. USB Allows you to enable or disable USB Type-A Downstream Ports charging function during monitor standby mode.
Others Display Info Select this option to adjust the OSD settings, such as DDC/CI, LCD Conditioning, and so on. Press the joystick to display the monitor's current settings.
DDC/CI DDC/CI (Display Data Channel/Command Interface) allows your monitor parameters (brightness, color balance, and etc.) to be adjustable via the software on your computer. You can disable this feature by selecting Off. Enable this feature for best user experience and optimum performance of your monitor. LCD Conditioning Helps reduce minor cases of image retention. Depending on the degree of image retention, the program may take some time to run. You can enable this feature by selecting On.
Service Tag Displays the service tag of your monitor. This string is required when you look for phone support, check your warranty status, update drivers on Dell's website, etc. Self-Diagnostic Press the joystick to initiate the self-diagnostic process. 1. When initiated, a gray screen appears. 2. Carefully inspect the screen for abnormalities. 3. Press the joystick. The color of the screen changes to red. 4. Inspect the display for any abnormalities. 5.
OSD Messages Initial Setup When Factory Reset is selected, the following message appears: When Yes is selected, the following message appears.
This means that the monitor cannot synchronize with the signal that it is receiving from the computer. See Monitor Specifications for the Horizontal and Vertical frequency ranges addressable by this monitor. Recommended mode is 1920 x 1080. NOTE: The message may be slightly different according to the connected input signal.
NOTE: If you select Yes for any one of the features mentioned above, the message will not appear next time you intend to change the settings of these features. When you perform a factory reset, the message will appear again. You will see the following message before the Lock function is activated: NOTE: The message may be slightly different according to the selected settings.
The OSD functions only in the normal operation mode. If you press any button other than the Power Button during the Standby mode, the following message will appear depending on the selected input: NOTE: The message may be slightly different according to the connected input signal. Activate the computer and the monitor to gain access to the OSD. NOTE: The message may be slightly different according to the connected input signal.
When Disable is selected for the Webcam, the following message appears: When the Webcam is disabled and the webcam module pop up, the following message appears: NOTE: For Webcam and Microphone to work, connect the USB upstream cable from the PC to the monitor. See Troubleshooting for more information.
Setting the Maximum Resolution To set the maximum resolution for the monitor: In Windows® 7, Windows® 8, and Windows® 8.1: 1. For Windows® 8 and Windows® 8.1 only, select the Desktop tile to switch to classic desktop. 2. Right-click on the desktop and click Screen Resolution. 3. Click the dropdown list of the Screen Resolution and select 1920 x 1080. 4. Click OK. In Windows® 10: 1. Right-click on the desktop and click Display settings. 2. Click Advanced display settings. 3.
Setting Up Windows Hello In Windows® 10: Click Windows Start menu, click Settings. Click Accounts. Click Sign-in options. You must set up a PIN before you can enroll in Windows Hello.
Click Add under PIN and enter to Set up a PIN. Enter New PIN and Confirm PIN, and then click OK. Once you have done that, the options to set up Windows Hello will unlock. Click Set up under Windows Hello, enter to Windows Hello setup.
The following message is displayed, click Get started. Keep looking directly at your screen and position yourself so that your face is in the center of the frame that appears on screen. The webcam will then register your face.
When the following message is displayed, click Close to exit Windows Hello setup. Once you have set up, you have another option to improve the recognition. Click Improve recognition if necessary.
Setting Up the Monitor Webcam as Default Setting When using a notebook with built-in webcam to connect this monitor, in the device manager interface, you can find the notebook built-in webcam and the monitor webcam. Normally, they are in enable status, and the default setting is using notebook built-in webcam. If you want to set up the monitor webcam as default setting, you need to disable the notebook built-in webcam.
Click Details > Property and select Hardware Ids.
The Value will show the detail hardware ids of this DELL Monitor IR Webcam. The hardware ids of the notebook built-in webcam and the monitor webcam are different. For C2423H/C2723H, the monitor webcam hardware ids will show as below: Right-click the PC/Notebook webcam, which has different hardware ids, and then click Disable.
Click Yes. The notebook webcam is now disabled and the monitor webcam will be used as the default setting. Restart the notebook.
Setting Up the Monitor Speaker as Default Setting When your computer connects multiple speakers, if you want to setup the monitor speaker as default setting, please follow below instructions: Right-click Volume in the Windows task bar notification area. Click Sounds to enter to Sound setting interface. If only the HDMI or DP cable is connected from your monitor to the computer, only one speaker named DELL C2423H/C2723H from the monitor will show in the Sound setting interface.
Click DELL C2423H/C2723H, and then click Set Default, the monitor speaker will be used as the default setting. Click OK to exit the Sound setting. If the USB cable and the HDMI or DP cable are connected from the monitor to the computer, two audio paths named DELL C2423H/C2723H and Echo Cancelling Speakerphone (C2423H/C2723H) from the monitor will show in the Sound setting interface. The DELL C2423H/C2723H monitor would show options for two audio paths supported in the monitor.
• Echo Cancelling Speakerphone (C2423H/C2723H) audio path is where audio streams through USB. This is through USB-A to USB-B cable. As the microphone path streams from monitor back to PC through USB, this selection is required for VoIP/UC conference applications. Audio Recording and Playback will work under this selection. • DELL C2423H/C2723H audio path is where audio streams through HDMI/ DP. Under this selection, there will not be microphone support. This selection is suitable for Audio Playback only.
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: 1. Turn off both your computer and the monitor. 2. Unplug the video cable from the back of the computer. 3.
If your monitor screen remains blank after you use the previous procedure, check your video controller and computer, because your monitor is functioning properly. Using the Joystick to Lock/Unlock Buttons Locking the Power and Joystick Buttons You can lock the joystick and Power buttons to prevent access to the OSD menu and/or power off the monitor. To lock the buttons: 1. Toggle and hold the joystick to the up or down or left or right for about 4 seconds until a pop menu appears. 2.
To unlock the button(s), press and hold the joystick to the up or down or left or right for 4 seconds. Select the Unlock icon to unlock the button(s). Updating Monitor Firmware You may verify your current firmware revision in Firmware. If this is not available, go to the Dell download support site for the latest application installer (Monitor Firmware Update Utility.exe) and refer to the Firmware Update Instruction User's Guide: www.dell.com/C2423H, www.dell.com/C2723H.
Common Problems The following table contains general information about common monitor problems you might encounter and the possible solutions: Common Symptoms No Video/Power LED off What You Experience No picture Possible Solutions • Ensure that the video cable connecting the monitor and the computer is properly connected and secure. • Verify that the power outlet is functioning properly using any other electrical equipment. • Ensure that the Power Button is pressed fully.
Missing Pixels LCD screen has spots • Cycle power On-Off. • Pixel that is permanently Off is a natural defect that can occur in LCD technology. • For more information on Dell Monitor Quality and Pixel Policy, see Dell Support site at: http:// www.dell.com/pixelguidelines. Stuck-on Pixels LCD screen has bright spots • Cycle power On-Off. • Pixel that is permanently off is a natural defect that can occur in LCD technology.
Synchronization Problems Screen is scrambled or appears torn • Reset the monitor to factory settings. • Perform monitor self-test feature check to determine if the scrambled screen appears in self-test mode. • Check for bent or broken pins in the video cable connector. • Restart the computer in the safe mode. Safety Related Issues Visible signs of smoke or sparks • Do not perform any troubleshooting steps. • Contact Dell immediately.
Image retention from a static image left on the monitor for a long period of time Faint shadow from the static image displayed appears on the screen • Set the screen to turn off after a few minutes of screen idle time. These can be adjusted in Windows Power Options or Mac Energy Saver setting. Webcam/Mic does not work • USB cable not plug in or not select the correct USB source • Plug in the USB Cable (Type-A to Type-B). • Alternatively, use a dynamically changing screensaver.
No Input Signal No picture, the LED • Check the signal source. Ensure the when user controls light is white computer is not in the standby mode are pressed by moving the mouse or pressing any key on the keyboard. • Check whether the signal cable is plugged in properly. Re-plug the signal cable if necessary. • Reset the computer or video player.
Headset with Mic (3.5 mm combo jack) not working with monitor mute / unmute button Headset with Mic Use UC App Mic icon to mute / unmute (3.
No sound can be heard from recorded video No sound can be • Disable Intel Smart Sound heard from recorded Technology for USB Audio driver in video with Intel Gen the Device Manager and re-boot the 11th CPU (Tiger PC Lake) platform • Alternatively, download the latest Audio Driver version for your computer or notebook When pressing either Volume down / Volume up, OSD volume bar response is lagging/delayed When pressing either • Disable Intel Smart Sound Volume down / Technology for USB Audio driver in Vol
Speaker volume is Speaker volume is • Increase the speaker volume of DELL low / sounds soft low / sounds soft C2423H/C2723H to maximum in the when speaker option Sound setting interface. is DELL C2423H/ • Press the Volume Up button to C2723H in Sound increase the speaker volume of DELL setting interface C2423H/C2723H. • If you select DELL C2423H/C2723H audio path, please ensure that the Echo Cancelling Speakerphone (C2423H/C2723H) volume is set to medium or high.
Microphone is muted Microphone is muted • Ensure that the USB upstream cable in the Windows is connected between the monitor Device Manager and the computer or notebook. • Reconnect the USB upstream cable to the computer or notebook. • Ensure that the microphone is enabled / unmuted on the monitor. If the microphone mute LED is lighting up in static red (indicates microphone muted), press the microphone button to unmute the microphone.
Front buttons do not work No response on the • Ensure that the USB upstream cable UC application when is connected from the PC to the pressing the buttons monitor. located on the front • For some UC platforms / bezel applications, the Mute function works by pressing the Mute button, but the Mute Icon on the UC platform is not sync (Icon shows unmute). For more information, see Unified Communications (UC) Platform Compatibility List.
Time lag between video and audio when playing XBOX When playing XBOX, • The monitor codec IC initialization the show out time time requires approximately 3 ~ 5 between video and seconds. This is normal behavior. audio has 3 ~ 5 • Wait for 3 ~ 5 seconds after turning second difference On monitor power or plugging-in the while turning On HDMI cable before playing video on monitor power or XBOX. unplugging/plugging HDMI cable.
Universal Serial Bus (USB) Specific Problems Common Symptoms What You Experience USB interface is not working USB peripherals are not working Possible Solutions • Check that your monitor is turned On. • Reconnect the upstream cable to your computer. • Reconnect the USB peripherals (downstream connector). • Switch Off and then turn On the monitor again. • Reboot the computer. • Some USB devices like external portable HDD require higher electric current; connect the device directly to the computer system.
Appendix FCC Notices (U.S. only) and Other Regulatory Information For FCC notices and other regulatory information, see the regulatory compliance website located at www.dell.com/regulatory_compliance. Contact Dell For customers in the United States, call 800-WWW-DELL (800-999-3355). 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.
