Acer Aspire E1-421 - Page 152

3-66 Machine Maintenance Procedures
4. Install and secure eighteen (18) screws to the base assembly (Figure 3-75).
Figure 3-75. Upper Case Screw Location
ID Size Quantity Screw Type
Red
Call out
M2.5*6 13
Green
Call out
M2*3 5
CM2.5*6 2