Lenovo K4450 Notebook - Manual (Page 71)

Removal steps of the system board assembly
Detach the connectors.
5
4
6
3
1
2
When installing: Ensure that all the connectors are attached firmly.
Remove the screws 7 .
7
7 7
Step Screw (quantity) Color Torque
7 M2 × 3 mm, flat-head, nylon-coated (3) Black 0.181 Nm
(1.85 kgf-cm)
Chapter 8 . Removing or replacing a FRU 65