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OptiPlex 7090 Small Form Factor Service Manual

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Removing the system board

Prerequisites

  1. Follow the procedure in before working inside your computer.
  2. Remove the side cover.
  3. Remove the front bezel.
  4. Remove the 2.5/3.5-inch hard-drive caddy.
  5. Remove the graphics card.
  6. Remove the solid-state drive.
  7. Remove the WLAN card.
  8. Remove the fan assembly.
  9. Remove the memory modules.
  10. Remove the processor.

About this task

The following images indicate the location of the system board and provide a visual representation of the removal procedure.

System board removal step 1 image

System board removal step 2 image

System board removal step 3image

Steps

  1. Remove the screw (6-32) that secures the front I/O bracket to the chassis.
  2. Lift the front I/O panel away from the chassis.
  3. Unroute the SATA cables from the cable routing guide on the metal bracket.
  4. Remove the two (6-32) screws from the metal bracket from over the M.2 SSD slot and lift it away from the system.
  5. Disconnect the following cables from their connectors on the system board:
    • Intrusion switch
    • ATX system board power supply cables
    • Power button switch
    • ATX CPU power supply cable
    • SATA data cables
    • SATA power cable
    • Fan cable
  6. Remove the four screws (6-32) and the single standoff screw (M2x4) which secure the system board to the chassis.
  7. Free the system board from the back I/O panel by sliding it towards the right and lift the system board out of the chassis.

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