Dell OptiPlex 3000 Thin Client Service Manual page 47

Steps
1. Align and lower the system board into the system until the connectors at the back of the system board align with the slots
on the chassis, and the screw holes on the system board align with the standoffs on the system.
2. Replace the five (M3x5) screws and two (M3x4) screws to secure the system board to the computer chassis.
NOTE: The coin-cell battery has a black mylar for cosmetic purpose only and has no functional impact. During the
installation of a new system board, it is recommended to transfer the black mylar from the previous system board to the
new system board.
To install the mylar sheet, follow the below mentioned steps:
Removing and installing components 47