Dell E2425HS Service Manual
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Dell E2425HS Service Manual

Dell E2425HS Service Manual

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Dell E2425HS Monitor
Service Manual
Model: E2425HS
Regulatory Model: E2425HSf
August 2024
Rev. A00
Regulatory information
1

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Summary of Contents for Dell E2425HS

  • Page 1 Dell E2425HS Monitor Service Manual Model: E2425HS Regulatory Model: E2425HSf August 2024 Regulatory information Rev. A00...

  • Page 2: Notes, Cautions, And Warnings

    A WARNING indicates a potential for property damage, personal injury, or death. © 2024 Dell Inc. or its subsidiaries. All rights reserved. Dell Technologies, Dell, and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.

  • Page 3: Table Of Contents

    Chapter 2: Views of E2425HS monitor ........................... 5 Side view ......................................5 Front view ....................................... 6 Bottom view..................................... 7 Chapter 3: Major components of E2425HS monitor ....................... 8 Chapter 4: Wiring connectivity diagram.......................... 9 Chapter 5: Connecting the cables ..........................10 Connecting VGA cable ................................10 Connecting DP cable ................................

  • Page 4: Chapter 1: Safety Instructions

    Safety Instructions Use the following safety guidelines to protect your monitor from potential damage and to ensure your personal safety. Unless otherwise noted, each procedure included in this document assumes that you have read the safety information that shipped with your monitor. NOTE: Before using the monitor, read the safety information that is shipped with your monitor and printed on the product.

  • Page 5: Chapter 2: Views Of E2425Hs Monitor

    Views of E2425HS monitor Side view Figure 1. Side view of the monitor Views of E2425HS monitor...

  • Page 6: Front View

    Front view Figure 2. Front view of the monitor Display panel Provides visual output to the user. Views of E2425HS monitor...

  • Page 7: Bottom View

    DisplayPort 1.2 port Connect to your computer with the DisplayPort cable. HDMI port Connect to your computer with the HDMI cable. VGA port Connect to your computer with the VGA cable. Speakers To produce audio output. Views of E2425HS monitor...

  • Page 8: Chapter 3: Major Components Of E2425Hs Monitor

    Major components of E2425HS monitor Figure 4. Major components Table 1 Components Item Description Item Description Interface board Stand riser Power board Stand base Display panel VESA cover Midframe Back cover Keypad board Speakers Chassis Major components of E2425HS monitor...

  • Page 9: Chapter 4: Wiring Connectivity Diagram

    Wiring connectivity diagram Figure 5. Wiring connectivity diagram Table 2 Cables Item Description Lightbar cable Keypad cable LVDS cable Speaker cable Wiring connectivity diagram...

  • Page 10: Chapter 5: Connecting The Cables

    NOTE: Dell monitors are designed to work optimally with Dell-supplied inbox cables. Dell does not guarantee the video quality and performance if non-Dell cables are used. To connect your monitor to the computer: 1.

  • Page 11: Connecting Dp Cable

    Connecting DP cable Figure 7. Connecting DP cable Connecting HDMI cable Figure 8. Connecting HDMI cable Connecting the cables...

  • Page 12: Chapter 6: Disassembly And Reassembly

    Disassembly and reassembly NOTE: The images in this document may differ from your computer depending on the configuration you ordered. Recommended tools  Phillips screwdriver #2  Nut driver 5 mm  Plastic scribe Screw list NOTE: When removing screws from a component, it is recommended to note the screw type, the quantity of screws, and then place them in a screw storage box.

  • Page 13: Stand

    Stand Removing the stand Prerequisites Follow the procedure in Before working inside your monitor. Steps Loosen the thumbscrew anti-clockwise. Pull the stand from the monitor. Loosen the thumbscrew anti-clockwise on the bottom of the base to separate stand base from stand riser. Figure 9.

  • Page 14: Installing The Stand

    Installing the stand Steps Attach the stand riser to the stand base. Tighten the screw clockwise. Align the stand assembly bracket to the monitor groove. Slide the stand into the slot on the back cover. Tighten the thumbscrew clockwise. Figure 10. Installing the stand Next steps Install the...

  • Page 15: Vesa Cover

    VESA cover Removing the VESA cover Prerequisites Follow the procedure in Before working inside your monitor. Steps Press the rift on the VESA cover to release it from the back of the monitor. Lift the VESA cover away from the monitor. Figure 11.

  • Page 16: Back Cover

    Back cover Removing the back cover Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the VESA cover. Steps Remove the two screws (M4x10) that secure the back cover to the chassis assembly. Remove the two screws (M4x4.5) that secure the back cover to the chassis assembly. Using the plastic scribe, pry the back cover starting from the bottom edge of the monitor.
  • Page 17 Figure 14. Removing the back cover Disassembly and reassembly...

  • Page 18: Installing The Back Cover

    Installing the back cover Steps Hold the back cover above the chassis assembly. Connect the speaker cable to the connector on the interface board. Adhere the tape to secure the speaker cable to the display panel. Place and snap the back cover into place on the chassis assembly. NOTE: Align the screw holes on the back cover with the screw holes on the chassis assembly before applying slight pressure to the back cover.
  • Page 19 Figure 16. Installing the back cover Next steps Install the VESA cover. Install the stand. Follow the procedure in After working inside your monitor. Disassembly and reassembly...

  • Page 20: Speakers

    Speakers Removing the speakers Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the VESA cover. Remove the back cover. Steps Release the speaker cable from the cable management on the back cover. Remove the speakers from the back cover. Figure 17.

  • Page 21: Installing The Speakers

    Installing the speakers Steps Attach the speakers onto the back cover. Hold the speaker cable using the cable management on the back cover. Figure 18. Installing the speakers Next steps Install the back cover. Install the VESA cover. Install the stand.

  • Page 22: Chassis Assembly

    Chassis assembly Removing the chassis assembly Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the VESA cover. Remove the back cover. Remove the speakers. Steps Release the lightbar cable from the cable management on the midframe. Peel the tape at the bottom left corner of the monitor.
  • Page 23 Figure 20. Removing the chassis assembly Disassembly and reassembly...
  • Page 24 Figure 21. Removing the chassis assembly Disassembly and reassembly...

  • Page 25: Installing The Chassis Assembly

    Installing the chassis assembly Steps Align the chassis bracket to the rib on the midframe. And place the chassis assembly on the display panel. Connect LVDS cable to the connector on the display panel. Adhere two aluminum foils at the top and one aluminum foil at the bottom side of the chassis assembly. Connect the keypad cable to the connector on the interface board.
  • Page 26 Figure 23. Installing the chassis assembly Next steps Install the speakers. Install the back cover. Install the stand. Install the VESA cover. Follow the procedure in After working inside your monitor. Disassembly and reassembly...

  • Page 27: Keypad Board

    Keypad board Removing the keypad board Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the VESA cover. Remove the back cover. Remove the speakers. Remove the chassis assembly. Steps Remove the tape at the bottom. Remove the keypad board from the slot on the front bezel.

  • Page 28: Installing The Keypad Board

    Installing the keypad board Steps Align and place the keypad board onto the front bezel. Adhere the keypad cable on the panel shielding. Adhere the tape on the keypad cable. Figure 25. Installing the keypad board Next steps Install the chassis assembly.

  • Page 29: Interface Board

    Interface board Removing the interface board Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the VESA cover. Remove the back cover. Remove the speakers. Remove the chassis assembly. Remove the keypad board. Steps Remove the two hex screws from the VGA port. Peel the mylar from the chassis assembly.
  • Page 30 Figure 27. Removing the interface board Disassembly and reassembly...
  • Page 31 Figure 28. Removing the interface board Disassembly and reassembly...

  • Page 32: Installing The Interface Board

    Installing the interface board Steps Connect the LVDS cable to the connector on the interface board. Connect the power cable to the connector on the interface board. Assemble the interface board and power board to the chassis. Replace the two screws (M3x6) to secure the interface board with the chassis. Attach the mylar onto the chassis assembly.
  • Page 33 Figure 30. Installing the interface board Disassembly and reassembly...
  • Page 34 Figure 31. Installing the interface board Next steps Install the keypad board. Install the chassis assembly. Install the speakers. Install the back cover. Install the stand. Install the VESA cover. Follow the procedure in After working inside your monitor. Disassembly and reassembly...

  • Page 35: Power Board

    Power board Removing the power board Prerequisites Follow the procedure in Before working inside your monitor. Remove the stand. Remove the VESA cover. Remove the back cover. Remove the speakers. Remove the chassis assembly. Remove the keypad board. Remove the interface board.

  • Page 36: Installing The Power Board

    Installing the power board Steps Connect the lightbar cable to the connector on the power board. Figure 33. Installing the power board Next steps Install the interface board. Install the keypad board. Install the chassis assembly. Install the speakers. Install the back cover.

  • Page 37: Chapter 7: Troubleshooting Instructions

    Troubleshooting Instructions WARNING: Before you begin any of the procedures in this section, follow the Safety Instructions. Self-test Your monitor provides a self-test feature that allows you to check if 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: Turn off both your computer and the monitor.
  • Page 38 Figure 36. HDMI cable disconnected warning message NOTE: This message also appears during normal operation, when the video cable is disconnected or damaged. Turn off your monitor and reconnect the video cable; then turn on your computer and the monitor. If your monitor screen remains blank after you perform the previous procedure, check your video controller and computer, because your monitor is functioning properly.

  • Page 39: Built-In Diagnostics

    Built-in diagnostics Your monitor has a built-in diagnostic tool that helps you determine if any screen abnormality you experience is an inherent problem with your monitor, or with your computer and video card. Figure 37. Built-in diagnostics function buttons To run the built-in diagnostics: 1.

  • Page 40: Common Problems

    Cycle power On-off. • A pixel that is permanently off is a natural defect that can occur in LCD technology. • For more information about Dell Monitor Quality and Pixel Policy, see Dell Support site at: www.dell.com/pixelguidelines. • Stuck-on pixels Cycle power On-off.

  • Page 41: Product-Specific Problems

    Common symptoms Possible solutions • Missing color Perform monitor self-test feature check. • Ensure that the video cable connecting the monitor to the computer is connected properly and is secure. • Check for bent or broken pins in the video cable connector. •...

  • Page 42: Chapter 8: Contacting Dell

    Contacting Dell To contact Dell for sales, technical support, or customer service issues, see www.dell.com/contactdell. NOTE: Availability varies by country and product, and some services may not be available in your country. NOTE: If you do not have an active internet connection, you can find contact information about your purchase invoice, packing slip, bill, or Dell product catalog.

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