Remove The Upper Case - Lenovo Yoga C640-13IML Hardware Maintenance Manual

Figure 20. Remove three screws
Call out
2
Step 3. Remove the system board.
Figure 21. Remove the system board
Go to
https://support.lenovo.com/partslookup
part:
System board

Remove the upper case

Make sure the following FRU (CRU) have been removed.
Screw specifications
M2 x 2
to look up the Lenovo part number of the following replacement
Number of screws
3
.
Chapter 4 Removing a FRU or CRU
39