Dell U2720QM Monitor Simplified Service Manual
Summary
This document is the service manual for Dell U2720Q and U2720QM 4K USB-C monitors. It provides safety notices, RoHS compliance, lead-free soldering requirements, exploded view diagrams, disassembly and assembly procedures, and troubleshooting. Emphasizes ESD precautions and manufacturer-specified parts. Target users are authorized service engineers performing monitor repairs.
Page 1 Text Content
Service Manual - U2720Q/QM
Version: 01
Date: 2021/10/30
Page Summary Contents For Dell U2720QM Monitor Simplified Service Manual
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Service Manual - U2720Q/QM Version: 01 Date: 2021/10/30
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1. Important Safety Notice Product Announcement: This product is certificated to meet Ro HS ! To ensure using a proper screwdriver, follow the Directive and Lead-Free produced definition. torque and f...
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2. Exploded view diagram with list of items Item Description Q'ty Remark 1 1 Panel ASSY Middle Frame Mylar tape 4 1 Key BD Panel Mylar Interface BD For EMEA Only, not for Power BD other regions 8 1 AS...
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3. Wiring Connectivity Diagram
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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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4. How to connect and disconnect power cable/ connectivity cable
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5. Disassembly and Assembly Procedures NOTE: Lift the rear cover up carefully. Disconnect the USB This “Disassembly and Assembly Procedures” is for EMEA only, S4 LVDS cable and function key cable from...
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5. Disassembly and Assembly Procedures Remove the bracket chassis module and then put the S10 bracket on a protector cushion. se a Philips-head screwdriver to remove four screws for unlocking the brac...
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5. Disassembly and Assembly Procedures Turn over the bracket chassis module. Remove the S12 Mylar tape from the hooks of the bracket. Use a Philips-head screwdriver to remove two screws S13 for unlock...
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5. Disassembly and Assembly Procedures 5.2 Assembly Procedures: Use a 2pcs Philips-head screwdriver to tighten Place a bracket chassis base on a protective screws for locking the AC-power outlet conne...
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5. Disassembly and Assembly Procedures Connect the EDP cable to the connector of the panel S10 module as the picture below shown. Move the bracket to locate the location columns, then connect the pane...
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5. Disassembly and Assembly Procedures Paste 4pcs conductive adhesive on the specific S14 positions to fix the bracket as the picture below shown. Move the assembled rear cover close to the panel unit...
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5. Disassembly and Assembly Procedures Take a stand base close to the monitor. Fit the two tabs on the upper part of the stand into the grooves S18 on the back of the monitor, and then lower the stand...
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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 co...
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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 yo...
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6. Trouble Shooting Instructions Setting USB-C Prioritization when USB-C Charging is set to On During Power Off If USB-C Charging is set to On During Power Off, the monitor allows you to specify the U...
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6. Trouble Shooting Instructions Common Problems The following table contains general information about common monitor problems you might encounter and the possible solutions: Common What You Possible...
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6. Trouble Shooting Instructions Common What You Possible Solutions Symptoms Experience Safety Related Visible signs of • Do not perform any troubleshooting steps. Issues smoke or sparks • Contact Del...
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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...
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6. Trouble Shooting Instructions Problem What you Possible solutions experience Intermittent Intermittent • Check if the maximum power consumption of charging charging device is over 90 W. when using ...
Manual Details
| Brand | Dell |
|---|---|
| Pages | 20 |
| File Size | 13.61 MB |
| Published | June 23, 2026 |
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Frequently Asked Questions
What are the required tools for disassembly?
Phillips-head screwdrivers #1 and #2, a penknife, and a soldering iron with absorber.
How do I handle USB Type-C cable replacement?
For replacement, contact Dell via support.dell.com to verify your region and select the appropriate service link.
What is the torque specification for the stand screws?
The M4x11 screws for the stand mechanism require a torque of 11±1kgfxcm.
What causes a black screen with a DP connection?
It may be caused by a graphics card certified to DP 1.1a, which cannot support DP 1.4 monitors.