Thermal rubbers location
Before installing the new system board, make sure that the
thermal rubbers are placed on the system board as shown
in the following figures.
For A21m/p series
Upper side of the system board
Bottom side of the system board
For A22m/p series
Upper side of the system board
Removing and replacing a FRU
ThinkPad A20m/p, A21m/p and A22m/p 93