Remove The Thermal Pad - Lenovo 14M836 Hardware Maintenance Manual

Step 2. Remove six screws and remove the system board.
Figure 10. Remove six screws and remove the system board
Screw specifications
M2 x L3.5
Go to
https://support.lenovo.com/partslookup
replacement part:
System board

Remove the thermal pad

Make sure the following FRUs (or CRUs) have been removed.
"Remove the system board" on page 32
Step 1. Remove the thermal pad on the back of the system board.
Number of screws
6
to look up the Lenovo part numbers of the following
.
Chapter 5 Removing a FRU or CRU
33