Vostro 3888 Service Manual

Removing the system board

Follow the procedure in Before working on 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 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.
Remove the side cover.
Remove the front bezel.
Remove the memory module.
Remove the M2 2230 SSD / M2.2280 SSD
Remove the graphics card.
Remove the coin-cell battery.
Remove the fan and heat sink assembly.
Remove the processor.

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

image of step 1 in removing the system board

image of step 2 in removing the system board

image of step 3 in removing the system board

image of step 4 in removing the system board

Remove the single screw (#6-32) that secures the front I/O-bracket to the chassis.
Slide and remove the front I/O-bracket from the chassis.
Disconnect the following cables that are connected to the system board and remove them from the routing points on the chassis:
- Power-supply cables
- Hard-drive cables
- Power-button cable
Remove the eight (#6-32) screws that secure the system board to the chassis.
Carefully lift the system board at an angle and remove the system board off the chassis.