Dell Precision 5520 Owner's Manual page 31

c. fans
d. heatsink
e. SSD
f. memory module
NOTE: Your computer's Service Tag is located under the system badge flap. You must enter the Service Tag in the
BIOS 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
re-connect them correctly after you replace the system board.
3. Remove the M2x2 screw securing the metal bracket for the LVDS to the system board [1] and
remove the bracket off the computer [2]. Then, disconnect the LVDS cable from the system board [3].
4. Slide out the connector latches to disconnect all the cables from the system board.
5. Perform the following steps to remove the system board from the computer:
a. Remove the five M2x4 screws that secure the system board to the computer [1].
Disassembly and reassembly 31