Lenovo ThinkPad P40 Yoga Hardware Maintenance Manual page 87

Removal steps of the ac power card
When installing: Ensure that the connectors are attached firmly.
Step Screw (quantity)
2
M2 × 3.5 mm, small-head, nylon-coated (3)
3
M2.5 × 6 mm, small-head, nylon-coated (1)
1
Torque
Color
Black 0.181 Nm
(1.85 kgf-cm)
Black 0.294 Nm
(3.0 kgf-cm)
.
Chapter 9 Removing or replacing a FRU
81