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OptiPlex 5480 All-in-One Service Manual

PDF

Removing the system board

Prerequisites

  1. Follow the procedure in Before working inside your computer.
    NOTE: Your computer’s Service Tag is stored in the system board. You must enter the Service Tag in the BIOS setup program after you replace the system board.
    NOTE: Replacing the system board removes any changes you have made to the BIOS using the BIOS setup program. You must make the appropriate changes again after you replace the system board.
    NOTE: Before disconnecting the cables from the system board, note the location of the connectors so that you can reconnect the cables correctly after you replace the system board.
  2. Remove the stand.
  3. Remove the cable cover (optional).
  4. Remove the back cover.
  5. Remove the system-board shield.
  6. Remove the memory module.
  7. Remove the wireless card.
  8. Remove the hard drive.
  9. Remove the M.2 2230 solid-state drive.
  10. Remove the M.2 2280 solid-state drive/Intel Optane.
  11. Remove the heat sink.
  12. Remove the processor.
  13. Remove the coin-cell.
  14. Remove the bottom cover.
  15. Remove the rear-I/O bracket.

About this task

The following image indicates the connectors on your system board.

  1. Power-supply unit (PSU) connector
  2. Intrusion switch
  3. Processor
  4. Display back-light cable connector
  5. Camera cable connector
  6. M.2 2230/2280 solid-state drive/Intel Optane PCIe connector
  7. System-fan cable connector
  8. Memory module
  9. LPC debug card connector
  10. Hard-drive connector
  11. SIO-signal cable connector
  12. SIO-power cable connector
  13. Audio-board cable connector
  14. Microphone-module cable connector
  15. Speaker cable connector
  16. Coin-cell battery
  17. Power-button cable connector
  18. Display cable connector
  19. M.2 WLAN connector
  20. PSU-fan cable connector
  21. Touch-screen cable connector

The following image indicates the location of system board and provides a visual representation of the removal procedure.

Image: Removing the system boardImage: Removing the system board

Steps

  1. Disconnect the camera cable from the connector on the system board.
  2. Disconnect the touchscreen cable from the connector on the system board.
  3. Disconnect the system fan cable from the connector on the system board.
  4. Disconnect the microphone-module cable from the connector on the system board.
  5. Disconnect the SIO-signal cable from the connector on the system board.
  6. Disconnect the speaker cable from the connector on the system board.
  7. Disconnect the audio-board cable from the connector on the system board.
  8. Disconnect the SIO-power cable from the connector on the system board.
  9. Disconnect the display cable from the connector on the system board.
  10. Open the latch and disconnect the power-button board cable from the connector on the system board.
  11. Disconnect the display back-light cable from the connector on the system board.
  12. Disconnect the PSU-fan cable to the system board.
  13. Disconnect the PSU cable to the system board.
  14. Remove the nine screws (M3x5) that secure the system board to the display-assembly base.
  15. Lift and remove the system board from the display-assembly base.

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