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OptiPlex 7490 All-In-One Service Manual

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Removing the side I/O-board

Prerequisites

  1. Follow the procedure in Before working inside your computer.
  2. Remove the stand.
  3. Remove the cable cover (optional).
  4. Remove the back cover.
  5. Remove the hard drive.
  6. Remove the system-board shield.
  7. Remove the bottom cover.
  8. Remove the rear-I/O bracket.

About this task

The following image indicates the location of the side I/O-board and provides a visual representation of the removal procedure.

Image: Removing the side-I/O board

Steps

  1. Remove the two screws (M3x5) that secure the side I/O-board shield to the display-assembly base.
  2. Lift and remove the side I/O-board shield off the side I/O-board.
  3. Disconnect the SIO-signal cable, SIO-power cable, and audio-board cable from the system board.
  4. Remove the SIO-signal cable, SIO-power cable, and audio-board cable from the routing guides on the display-assembly base.
  5. Remove the two screws (M2.5x3.5) that secure the side I/O-board to the display-assembly base.
  6. Lift and remove the side I/O-board with cables off the display-assembly base.

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