Acer Aspire E1-521 Service Manual page 172

Attach the screw to secure the power board to the upper case.
3.
Install the upper case (see
4.
Screw Name
M 2.0 x 3.0
5-73
Figure 5:108. Securing the Power Board Screw
Upper Case Installation
Table 5:12. Power Board Screw
on page 5-38).
Screw Type Quantity
1
Service and Maintenance