Dell Precision 3520 Owner's Manual

Removing the system board

Follow the procedure in Before working inside your computer .
Remove the:
To release the system board:
1. Remove the M2.0x3.0 screws that secures the metal bracket [ 1].
2. Lift the metal bracket that secures the display cable [ 2].
3. Disconnect the display cable from the connectors on the system board [ 3].
4. Disconnect the power cable [ 4].
To remove the system board:
1. Disconnect the LED board, mother board and touchpad cable from the system board [1].
2. Remove the M2.0x5.0 screws that secure the metal bracket and lift it away from the system board [2,3].
  - NOTE: The metal bracket referred is the USB-C port bracket.
Remove the M2.0x3.0 screws and lift the system board away from the computer [1, 2].