Lenovo B50-30 Touch Hardware Maintenance Manual page 55

Lenovo B50-30/B50-30 Touch/B50-45/B50-70/B50-80
Figure 13. Removal steps of system board (continued)
Disconnect the ODD board connector and the USB board connector in the
direction shown by arrow
direction shown by arrow
2
d
Remove two screws
4
Step Screw (quantity)
7
d d
M2.5 x 4 mm, flat-head, nylok-coated (2)
7
e d
M2 x 5 mm, flat-head, nylok-coated (1)
7
f d
M2 x 3 mm, flat-head, nylok-coated (2)
b
. Then disconnect the EDP connector in the
c
.
e
, screw and two screws
6
5
4
f
.
Color Torque
Black 2.0~2.5kgf.cm
Silver 1.5~2.0kgf.cm
Black 1.0~1.5kgf.cm
51