Lenovo B4400 Notebook - Manual (Page 60)

Lenovo B4400 Hardware Maintenance Manual
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Figure 14. Removal steps of base cover, power assembly and IO board (continued)
Remove two screws . Remove the power assembly in the direction shown by
arrow .
Remove two screws . Remove the IO board in the direction shown by arrow
.
Step Screw (quantity) Color Torque
M2 × 3 mm, flat-head, nylok-coated (2) Black 1.85 kgfcm
Step Screw (quantity) Color Torque
M2 × 6 mm, flat-head, nylok-coated (1) Black 1.85 kgfcm
a
b
2
1 1
c
a
b
2
1 1 5
d