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Dell P3421WB Simplified Service Manual
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Dell P3421WB Simplified Service Manual

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Service Manual–P3421WB
Version: 01
Date:2021/10/08
- 1 -

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Summary of Contents for Dell P3421WB

  • Page 1 Service Manual–P3421WB Version: 01 Date:2021/10/08 - 1 -...

  • Page 2: Table Of Contents

    Content Index 1. General Safety Instructions ..................3 1.1 SAFETY: General Safety ..................3 1.2 SAFETY: General Power Safety ................5 2. Exploded view diagram with list of items ..............6 3. Wiring connectivity diagram ..................8 4. How to connect and disconnect power cable/ connectivity cable......9 5.

  • Page 3: General Safety Instructions

    IMPORTANT NOTICE FOR USE IN HEALTHCARE ENVIRONMENTS: Dell products are not medical devices and are not listed under UL or IEC 60601 (or equivalent). As a result, they must not be used within 6 feet of a patient or in a manner that directly or indirectly contacts a patient 1.1 SAFETY: General Safety...
  • Page 4 When operating your equipment:  Do not use your equipment in a wet environment, for example, near a bath tub, sink, or swimming pool or in a wet basement.  Do not use AC powered equipment during an electrical storm. Battery powered devices may be used if all cables have been disconnected.

  • Page 5: Safety: General Power Safety

    Be sure to grasp the plug, not the cable, when disconnecting equipment from an electric  socket. If your equipment uses an AC adapter: Use only the Dell provided AC adapter approved for use with this device. Use of another AC  adapter may cause a fire or explosion. ...

  • Page 6: Exploded View Diagram With List Of Items

    2. Exploded view diagram with list of items - 6 -...
  • Page 7 USB 3.2 Gen1 (5 Gbps) upstream cable 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 8: Wiring Connectivity Diagram

    3. Wiring connectivity diagram Wire3 Wire4 FFC 1 Wire2 Wire1 FFC 2 - 8 -...

  • Page 9: How To Connect And Disconnect Power Cable/ Connectivity Cable

    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. Connect/ disconnecting the DisplayPort cable and Power cable Connecting/ disconnecting the HDMI cable and Power cable - 9 -...
  • Page 10 Connecting/ disconnecting the USB-TYPE C cable and Power cable Connecting/ disconnecting the USB 3.2 Gen1 (5 Gbps) cable and Power cable - 10 -...

  • Page 11: Disassembly And Assembly Procedures

    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. 5.1 Disassembly SOP Preparation before disassembly 1.
  • Page 12 1. Use hands or Bar Scraper scraper bar to disassemble Rear Cover from the monitor. Notice the disassembly order: Top Side=>Right/ Left Side=>Bottom Side 1. Pull out CTRL BD FFC from I/F BD to take off Rear Cover 1. Pull out USB FFC cable from I/F BD 1.
  • Page 13 1. Unlock 4 screws Philips-head to disassemble screwdriver Main SHD (Orange mark) Torsion of Main SHD screw: 4.5±0.5 kg 1. Tear off a tape from EDP cable 2. Pull out EDP cable from Panel 3. Take off Main SHD from panel 1.
  • Page 14 1. Unlock 10 PCBA Philips-head screws to screwdriver disassemble I/F Torsion of PCB BD, SPS BD and LED DRV BD screw: 9±1Kg from Main SHD 1. Tear off tape from Do not I/F BD touch the component without wearing insulating gloves when 2.

  • Page 15: Assembly Sop

    5.2. Assembly SOP Preparation before assemble 1. Clean the room for work 2. Identify the area for material 3. Prepare the implement, equipment, materials as bellow： 1) Working table 2) Philips-head screwdriver 3) Hex-head screwdriver 4) Gloves 5) Cleaning cloth 6) ESD protection 7) U3415 Curve Sponge Jig Item...
  • Page 16 1. Assemble “Mylar PWR BD” on Main SHD Panel and 1. Place P3421W panel on U3415W whole U3415W curve sponge jig curve monitor head sponge jig must be put on U3415W curve sponge jig to avoid panel damage. 2. Insert EDP cable into Panel It is not allowed to place the...
  • Page 17 1. Insert USB FFC cable into I/F BD 1. Insert CTRL BD FFC into I/F Philips- head Screwdriv Torsion of screw:11± 2. Assemble Rear Cover with Middle Frame 3. Fix Rear Cover by screw *4 To attach the monitor stand: 1.

  • Page 18: Trouble Shooting Instructions

    6. Trouble shooting instructions - 18 -...
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