Acer 1820PT - Manual (Page 67)

Chapter 3 57
Removing the Upper Cover
1. See “Removing the Keyboard” on page 53.
2. See “Removing the Hinge Covers” on page 55.
3. Remove the twenty-two (22) screws in the lower cover.
4. Flip the computer over and unlock the button board cable.
Step Screw Quantity Screw Type.
Lower Cover M2*5 (Red Call Out) 16
M2*4 (Green Call Out) 6