Service Manual - U2723QE/U3023E/U3223QE Version: 01 Date: 2021/11/30
1. Important Safety Notice Product Announcement: This product is certificated to meet RoHS ! To ensure using a proper screwdriver, follow the Directive and Lead-Free produced definition. torque and force listed in assembly and Using approved critical components only is disassembly procedures to unscrew screws. recommended when the situation to replace defective parts. Vender assumes no liability express or implied, arising out of any unauthorized modification of design or replacing non-RoHS parts.
2. Exploded view diagram with list of items 1 2 8 Item 1 2 3 4 5 6 7 8 9 10 11 12 13 14 3 10 4 5 11 12 Description Panel ASSY Middle Frame PCBA USB BD PCBA Power BD PCBA Interface BD ASSY Main Chassis ASSY Rear Cover ASSY Stand Base Power cable DisplayPort 1.8 M cable USB-C Gen2 PD3.0 cable (U3023E only) USB-C Gen2 1.0 M cable (A to C) (U3023E only) USB-C 1.0 M cable (A to C) (U2723QE/U3223QE only) USB-C 1.
3. Wiring Connectivity Diagram U2723QE&U3223QE Panel 3840*2160 HDR400 KB1 KB2 Joystic BD LED BD Interface Board Power BD USB board USB3.0 Down 5 AC In HDMI2.0 In HDMI DP1.4 In Type-C1 DP1 USBC1 DP1.4 out DP2 LOUT 1 Type-C2 Line-out USBC2 USB3.0 Down 1 USB1 USB3.0 Down 2 USB3.0 Down 3 USB2 USB3 USB3.0 Down 4 RJ45 USB4 LAN1 USBC Down 6 U3023E Panel 2560*1600 LED Driver BD Joystick board Interface Board Power BD LED board USB board USB3.0 Down4 AC In HDMI1 .4 In DP1 .
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.
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5. Disassembly and Assembly Procedures NOTE: This “Disassembly and Assembly Procedures” is for EMEA only, not for other regions. Please note that Dell will deem warranty void if any disassembly is done on the monitors. Lift the rear cover up carefully. Disconnect the S4 joystick key cable from the connector of the interface board, and then remove the rear cover and put it aside for later disassembling.
5. Disassembly and Assembly Procedures Use a Philips-head screwdriver to remove 18(13+5)pcs screws for unlocking the middle bezel S8 S11 Lift up the middle bezel, and then put it on a cushion foam for later disassembling. with the panel module. (No.1~13 screw size=M3x5, Torque=5±0.5kgfxcm; No.13~18 screw size=M3x4.5, Torque=5±0.
5. Disassembly and Assembly Procedures S14 Take away the bracket chassis module and then put the bracket chassis module on a protective cushion. Release the panel lamp cables from the hooks of the S15 bracket, then remove the Mylar tape from the hooks of the bracket. Use a Philips-head screwdriver to remove 8pcs S16 screws for interface board and power board. (No.1 screw size=M4x8, Torque=7±1kgfxcm; No.2~8 screw size=M3x7.
5. Disassembly and Assembly Procedures 5.1 Assembly Procedures: Place a bracket chassis base on a protective S1 cushion, then stick 4pcs Silicon sheets on the Take a black mylar to insert the hooks of the bracket S4 positions as the picture below shown. paper of the panel lamp cable and locate the cable into the hook of the bracket..
5. Disassembly and Assembly Procedures Move the middle bezel with the LED board close to S9 the panel unit, then assemble the middle bezel with the front bezel and panel module. Adjust the bracket chassis module, and then use a S7 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.
5. Disassembly and Assembly Procedures Take 1pcs USB board, 2pcs cables and 1pcs Take 1pcs joystick key and 1pcs OSD board, conductive foam. Connect the 2pcs cables to the assemble the joystick key with the OSD board.
5. Disassembly and Assembly Procedures Use a Philips-head screwdriver to tighten 4pcs screws for locking the rear cover with the unit. Stick S17 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; Torque=11±1kgfxcm) 2 4 3 1 Take a stand base close to the monitor. Fit the two S18 tabs on the upper part of the stand into the grooves, and then lower the stand so that the monitor mounting area snaps onto the stand.
6. Trouble Shooting 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.
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.
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6. Trouble Shooting Instructions Common symptoms Intermittent Problems What you Possible solutions experience Monitor • Ensure that the video cable connecting the 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. Missing Color Picture missing • Perform monitor self-test.
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6. Trouble Shooting Instructions Problem What you experience No image when Black screen using USB-C connection to computer, laptop, and so on Possible solutions No charging when using USB-C connection to computer, laptop, and so on No charging Intermittent charging when using USB-C connection to computer, laptop, and so on No image when using USB-C MST Intermittent charging • Verify if the USB-C interface of the device can support DP alternate mode.
6. Trouble Shooting Instructions Problem What you experience The LAN port is OS setting not functioning or cable connection issue Possible solutions • Ensure that the latest BIOS and drivers for your computer are installed on your computer. • Ensure that the RealTek Gigabit Ethernet Controller is installed in the Windows Device Manager. • If your BIOS Setup has a LAN/GBE Enabled/ Disabled option, make sure it is set to Enabled.
6. Trouble Shooting Instructions Problem U3023E connected as 3rd monitors displayed image at lower resolution in DP1.4 (DSC Enable) 2nd monitor (U3023E) no displayed image when 1st monitor (non-DSC) connected to Discrete Graphic Card (E.g Nvidia) with DSC Enable U3023E as 2nd monitor cannot display 2560 x 1600 image when 1st monitor (non-DSC) connected to Intel Graphic Card with DP1.
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6. Trouble Shooting Instructions Problem What you experience Two monitors U3023E connected in connected as Daisy chain, 1st 2nd monitor monitor(noncannot set to 2560 x 1600 @ DSC) and 2nd monitor 60Hz in Daisy U3023E cannot chain mode in set to 2560 x DP1.
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6. Trouble Shooting Instructions Universal Serial Bus (USB) specific problems Specific symptoms USB interface is not working What you Possible solutions experience USB peripherals • Check that your display is turned ON. are not working • Reconnect the upstream cable to your computer. • Reconnect the USB peripherals (downstream connector). • Turn off the monitor and turn it on again. • Reboot the computer.
