IBM ThinkPad R40 Hardware Maintenance Manual page 119

Removing and replacing a FRU
W hen in s ta llin g :
• Attach the system board so that the two small
projections on the base cover f i t into the holes provided.
N ote: W h e n replacing the system board, you must replace
the thermal pad F R U 5 0 2 2 B Z 4 0 2 3 A also.
ThinkPad R40 115