Lenovo E40-70 Notebook - Manual (Page 73)

Removal steps of the system board
Detach EDP cable connector 1 .
a
Remove one screw 2 and three screws 3 .
b
c
c
c
Step Screw (quantity) Color Torque
2 M2 × 5mm, flat-headed, nylon-coated (1) Silver 1.7– 2.0 kgfcm
3 M2.5 × 6mm, flat-headed, nylon-coated (3) Black 2.0– 2.5 kgfcm
Chapter 10 . Removing or replacing a FRU 67