Lenovo 019923U Hardware Maintenance Manual page 93

Removal steps of the system board assembly
For ThinkPad Edge 15" and E50:
Step Screw (quantity)
1
M2 × 5 mm, wafer-head, nylon-coated (4)
For ThinkPad Edge 14" and E40:
Step Screw (quantity)
1
M2 × 5 mm, wafer-head, nylon-coated (2)
Color Torque
Black 0.181 Nm
(1.85 kgf-cm)
Color Torque
Black 0.181 Nm
(1.85 kgf-cm)
.
Chapter 8 Removing or replacing a FRU
87