Lenovo ThinkPad T540p Hardware Maintenance Manual page 99

Removal steps of the system board and base cover
When installing:
Ensure that the connector is attached firmly.
Step Screw (quantity)
3
M2 × 3 mm, flat-head, nylon-coated (2)
d
1
3
4
3
2
Color
Silver
Chapter 9
2
Torque
0.181 Nm
(1.85 kgf-cm)
.
Removing or replacing a FRU
93