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Inspiron 3020 Small Desktop Service Manual

PDF

Removing the system board

CAUTION:The information in this section is intended for authorized service technicians only.

Prerequisites

  1. Follow the procedure in Before working inside your computer.
  2. Remove the left-side cover.
  3. Remove the front cover.
  4. Remove the 3.5-inch hard drive or 2.5-inch hard drive.
  5. Remove the hard-drive and optical-drive cage.
  6. Remove the memory.
  7. Remove the M.2 2230 solid-state drive or M.2 2280 solid-state drive, as applicable.
  8. Remove the wireless card.
  9. Remove the coin-cell battery.
  10. Remove the media-card reader.
  11. Remove the fan shroud.
  12. Remove the fan and heat-sink assembly.
  13. Remove the processor.

About this task

NOTE:The Service Tag information of your computer 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 that 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.

The following image indicates the location of the connectors and slots of the system board.

Removing the system board

  1. Processor-power cable connector (ATX CPU1)
  2. Processor socket
  3. Processor-power cable connector (ATX CPU2)
  4. Processor-fan cable connector
  5. Memory module slots
  6. M.2 2230/2280 solid-state drive slot
  7. Power-button cable connector
  8. Media-card reader cable connector
  9. System-board power cable connector (ATX SYS)
  10. M.2 wireless-card slot
  11. Optical-drive data cable connector (SATA-3)
  12. Hard-drive and optical-drive power cable connector (SATA PWR)
  13. Hard-drive data cable connector (SATA-0, boot drive)
  14. PCIe x16 slot (SLOT2)
  15. PCIe x1 slot (SLOT1)
  16. Coin-cell battery socket

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

Removing the system board

Removing the system board

Removing the system board

Steps

  1. Remove the screw (#6-32) that secures the front I/O bracket to the chassis.
  2. Lift and remove the front I/O bracket off the chassis.
  3. Disconnect the following cables from the system board.
    • hard-drive and optical-drive power cable
    • optical-drive data cable
    • hard-drive data cable
    • system-board power cable
    • power-button cable
    • processor-power cable
  4. Remove the seven screws (#6-32) and the screw (#6-32x3.8) that secure the system board to the chassis.
  5. Lift the system board at an angle and remove it from the chassis.

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