Lenovo B70-80 Hardware Maintenance Manual page 67

Figure 14. Removal steps of base cover and LED board
a
Loosen the screw , then remove the USB and audio board.
When installing: Make sure that the power connector is attached firmly.
Step Screw (quantity)
c M2.5 × 4 mm, flat-head, nylok-coated (1)
Lenovo B70-80
a
Color Torque
Black 3.0 kgfcm
63