Acer Aspire V5-571 Service Manual page 154

4. Turn the computer over to acces the base side of the lower case assembly.
5. Secure the keyboard to the lower case assembly using two screws.
Figure 3-116. Upper Case Screws – Base Side
Table 3-116. Screws
Step Screw Quantity Screw Type
Upper Case Reassembly M2.5 × L5 17
3-78 Machine Maintenance