Dell U2723QE Service Manual
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Dell U2723QE Service Manual

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Service Manual - U2723QE/U3023E/U3223QE
Version: 01
Date: 2021/11/30

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Summary of Contents for Dell U2723QE

  • Page 1 Service Manual - U2723QE/U3023E/U3223QE Version: 01 Date: 2021/11/30...

  • Page 2: Important Safety Notice

    1. Important Safety Notice Product Announcement: ! To ensure using a proper screwdriver, follow the This product is certificated to meet RoHS torque and force listed in assembly and Directive and Lead-Free produced definition. disassembly procedures to unscrew screws. Using approved critical components only is ! Using Lead-Free solder to well mounted the recommended when the situation to replace parts.
  • Page 3 See “NOTE” NOTE: For replacement of power cord, connectivity cable and external power supply (if applicable), contact Dell: 1. Go to https://www.dell.com/support. 2. Verify your country or region in the Choose A Country/Region drop-down menu at the bottom-right corner of the page.
  • Page 4 3. Wiring Connectivity Diagram U2723QE&U3223QE Panel 3840*2160 HDR400 Joystic BD LED BD Interface Board Power BD USB board USBC USB3.0 Down 6 Down 5 AC In HDMI2.0 In DP1.4 In Type-C1 DP1.4 out USB3.0 LOUT 1 Type-C2 USB3.0 USB3.0 USB3.0...
  • Page 5 4. How to connect and disconnect power cable/ connectivity cable WARNING: To change power cable/ connectivity cable, switch off power before unplugging the cable and replugging in required cable. Connecting the HDMI Cable (optional) Connecting the DP Cable...
  • Page 6 4. How to connect and disconnect power cable/ connectivity cable Connecting the monitor for DP Multi-Stream Transport (MST) function Connecting the USB-C Cable (A to C) Connecting the USB-C Cable (C to C)
  • Page 7 4. How to connect and disconnect power cable/ connectivity cable Connecting the Monitor for USB-C Multi-Stream Transport (MST) Function Connecting the Monitor for RJ45 Cable (optional)

  • Page 8: Disassembly And Assembly Procedures

    This “Disassembly and Assembly Procedures” is for EMEA only, joystick key cable from the connector of the interface not for other regions. Please note that Dell will deem warranty void board, and then remove the rear cover and put it if any disassembly is done on the monitors.
  • Page 9 5. Disassembly and Assembly Procedures Use a Philips-head screwdriver to remove Lift up the middle bezel, and then put it on a cushion 18(13+5)pcs screws for unlocking the middle bezel foam for later disassembling. with the panel module. (No.1~13 screw size=M3x5, Torque=5 0.5kgfxcm;...
  • Page 10 5. Disassembly and Assembly Procedures Take away the bracket chassis module and then put Remove the power board board and interface the bracket chassis module on a protective cushion. board from the bracket chassis module carefully, and then disconnect all of the cables. Release the panel lamp cables from the hooks of the bracket, then remove the Mylar tape from the hooks of the bracket.
  • Page 11 5. Disassembly and Assembly Procedures Take a black mylar to insert the hooks of the bracket 5.1 Assembly Procedures: Place a bracket chassis base on a protective to cover the power board, then tear off the gum cushion, then stick 4pcs Silicon sheets on the paper of the panel lamp cable and locate the cable positions as the picture below shown.
  • Page 12 5. Disassembly and Assembly Procedures Move the middle bezel with the LED board close to the panel unit, then assemble the middle bezel with the front bezel and panel module. Adjust the bracket chassis module, and then u se a Philips-head screwdriver to tighten 4pcs screws for locking the bracket chassis module with the panel (No.1~4 Screw size= M3x5, Torque=5±0.5kgfxcm)
  • Page 13 5. Disassembly and Assembly Procedures Take 1pcs USB board, 2pcs cables and 1pcs Take 1pcs joystick key and 1pcs OSD board, assemble the joystick key with the OSD board. conductive foam. Connect the 2pcs cables to the Locate the board to the correct position of the rear connectors of the Usb board, then turn over the cover, then use a Philips-head screwdriver to tighten board and paste the conductive foam on the back of...
  • Page 14 5. Disassembly and Assembly Procedures Use a Philips-head screwdriver to tighten 4pcs screws for locking the rear cover with the unit. Stick two pieces of label on the specific positions, then insert 2pcs DP out Caps into the DP out connectors. (No.1~4 screw size=M4x11;...
  • Page 15 LED remains white. Also, depending upon the selected input, one of the dialogs shown below will continuously scroll through the screen. No DP Cable The display will go into Standby Mode in 4 minutes. www.dell.com/U3023E/U2723QE/U3223QE No HDMI Cable The display will go into Standby Mode in 4 minutes. www.dell.com/U3023E/U2723QE/U3223QE No USB-C Cable The display will go into Standby Mode in 4 minutes.

  • Page 16: Built-In Diagnostics

    6. Trouble Shooting Instructions Built-in diagnostics Your monitor has a built-in diagnostic tool that helps you determine if the screen abnormality you are experiencing is an inherent problem with your monitor, or with your computer and video card. UltraSharp 30/27/32 Monitor Brightness/Contrast Display Info Select...

  • Page 17: Common Problems

    Missing Pixels LCD screen has • Cycle power on-off. spots • 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: https://www.dell.com/pixelguidelines. Stuck-on Pixels LCD screen has • Cycle power On-Off. bright spots • Pixel that is permanently off is a natural defect that can occur in LCD technology. • For more information on Dell Monitor Quality and PixelPolicy, see Dell Support site at: https://www.dell.com/pixelguidelines.
  • Page 18 6. Trouble Shooting Instructions Common What you Possible solutions symptoms experience Intermittent Monitor • Ensure that the video cable connecting the Problems malfunctions on monitor to the computer is connected properly & off and is secure. • Reset the monitor to factory settings. • Perform monitor self-test feature check to determine if the intermittent problem occurs in self-test mode.

  • Page 19: Product Specific Problems

    6. Trouble Shooting Instructions Product specific problems Problem What you Possible solutions experience Screen image is Image is • Check the Aspect Ratio setting in the Display too small centered on menu OSD. screen, but • Reset the monitor to factory settings. does not fill entire viewing area...
  • Page 20 • If the Notebook requires a >90 W power laptop, and so adaptor, it may not charge with the USB-C connection. • Ensure that you use only Dell approved adapter or the adapter that comes with the product. • Ensure that the USB-C cable is not damaged. Intermittent Intermittent • Check if the maximum power consumption of...
  • Page 21 6. Trouble Shooting Instructions Problem What you Possible solutions experience The LAN port is OS setting • Ensure that the latest BIOS and drivers for your not functioning or cable computer are installed on your computer. connection • Ensure that the RealTek Gigabit Ethernet issue Controller is installed in the Windows Device Manager.
  • Page 22 6. Trouble Shooting Instructions Problem What you Possible solutions experience U3023E Three U3023E • Press “Windows” + “P” key, select “second connected as monitors screen only” monitors connected in • Goto Display setting, select 2560 x 1600 displayed daisy chain, image at lower displayed resolution in image at lower...
  • Page 23 2 or 3 monitors • Set Multi-Monitor Sync (MMS) turn off Brightness/ connected in • Or adjust Brightness/contrast through OSD Contrast daisy chain through when MMS Dell Display is On, some Manager functions of (DDM) the 2 or 3 monitors may not work on...
  • Page 24 6. Trouble Shooting Instructions Problem What you Possible solutions experience U3023E Two monitors • Connect U3023E as 1 Monitor connected as connected in monitor Daisy chain, 1 cannot set to monitor(non- 2560 x 1600 @ DSC) and 60Hz in Daisy monitor chain mode in U3023E cannot DP1.4 (DSC...
  • Page 25 6. Trouble Shooting Instructions Problem What you Possible solutions experience 3 Soundbar 3 soundbars • USB Topology limitation to 2. unit not unit connected • Connect 2 soundbar unit individually to 2 working when individually U3023E monitor connected to 3 U3023E to 3 U3023E monitor, monitor soundbar not...

  • Page 26: Universal Serial Bus (Usb) Specific Problems

    6. Trouble Shooting Instructions Universal Serial Bus (USB) specific problems Specific What you Possible solutions symptoms experience USB interface is USB peripherals • Check that your display is turned ON. not working are not working • Reconnect the upstream cable to your computer.

This manual is also suitable for:

U3023eU3223qe

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