Lenovo ThinkPad P72 Hardware Maintenance Manual page 91

Removal steps of the power button board
Step Screw (quantity)
1
M2 × 3 mm, flat-head, nylon-coated (2)
Color Torque
0.181 Nm
Silver
(1.85 kgf-cm)
.
Chapter 9 Removing or replacing a FRU
85