Dell P2421B Simplified Service Manual
Dell P2421B Simplified Service Manual

Dell P2421B Simplified Service Manual

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Simplified Service Manual–P2421B
Version: 01
Date:2021/03/04
- 1 -

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Table of Contents
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Summary of Contents for Dell P2421B

  • Page 1 Simplified Service Manual–P2421B Version: 01 Date:2021/03/04 - 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 ..................7 4. Disassembly and Assembly Procedures ..............8 4.1 Disassembly SOP ....................
  • 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

     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. NOTE: Refer to your system rating label for information on the proper adapter model ...
  • Page 6: Exploded View Diagram With List Of Items

    2. Exploded view diagram with list of items Item Description Q'ty Item Description Q'ty 1 ASSY BZL TRIM 15 SCRW T FPH M3*6L DELTA-PT NI 2 BTN OSD 16 FFC USB3.0 3 BTN PWR 17 PCBA I/F BD 4 PCBA CTRL BD 18 SCRW FPHM4*10L(7.7/1.6)B-ZNNY 5 SCRW TP-B FPH M2*2.4L ZN 19 ASSY SHD MAIN...
  • Page 7: Wiring Connectivity Diagram

    3. Wiring connectivity diagram Wire 1 FFC 1 FFC 2 - 7 -...
  • Page 8: Disassembly And Assembly Procedures

    4. Disassembly and Assembly Procedures 4.1 Disassembly SOP Preparation before disassemble 1. Clean the room for disassemble 2. Identify the area for monitor 3. Check the position that the monitors be placed and the quantity of the monitor; prepare the area for material flow;...
  • Page 9 1. Tear off the small aluminum foil from Main SHD 1. Tear off the acetate adhesive tape from Panel 2. Pull out LED Backlight wire from SPS BD Pull out CTRL BD FFC cable from I/F BD and tear off it from Main SHD Pull out USB BD cable from I/F BD...
  • Page 10 1. Remove Safety 1. Philips- Mylar from SPS BD. head screwdriver Torsion of PCB screw: 6.5±1.0Kg 2. Hex-head screwdriver 2. Unlock 6 PCBA screws from PCBA. Torsion of hex screw: 5.0±0.6Kg 3. Unlock 4 hexagonal screws from Main 1. Disassemble I/F BD from Main SHD and unplug SPS BD wire 2.
  • Page 11: Assembly Sop

    4.2 Assembly SOP Preparation before assemble 1. Clean the room for work 2. Identify the area for material 3. Prepare the implement, equipment, material as bellow: 1) Working table 2) Philips-head screwdriver 3) Hex-head screwdriver 4) Glove 5) Cleaning cloth 6) ESD protection Item Picture...
  • Page 12 1. Place panel on worktable with panel surface facing down 2. Assemble Safety Mylar on Main 1. Insert LVDS cable into Panel and stick a tape on LVDS cable to fix it, then, stick a piece of large aluminum foil to cover it 1.
  • Page 13 1. Stick a small aluminum foil on Main SHD 1. Assemble Rear Cover with Mid- Frame 2. Follow the sequence to press on Rear Cover to make it be assembled with Mid-Frame tightly 1. Lock 4 screws on Rear Cover Philips- head screwdriver...
  • Page 14: Trouble Shooting Instructions

    5. Trouble shooting instructions - 14 -...
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