Acer Aspire E1-531 Service Manual page 108

Attach the 21 screws to secure the upper case and the lower case.
5.
Install the keyboard (see
6.
Install the base door (see
7.
Screw Name
M 2.0 x 2.5
M 2.5 x 5.0
M 2.5 x 8.0
3-40
Figure 3:55. Attaching the Upper and Lower Case Screws
Keyboard Installation
Base Door Installation
Table 3:8. Upper and Lower Case Screws
on page 3-32).
on page 3-13).
Screw Type Quantity
3
2
16
Service and Maintenance