Lenovo B4400 Notebook - Manual (Page 53)

Lenovo B4400
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Figure 10. Removal steps of system board
Loosen the screws .
Detach IO board connector in the direction shown by arrow , LCD connector
in the direction by arrow , unplug speakers connectors in the direction shown
by arrow , built-in microphone connector in the direction shown by arrow
.
Step Screw (quantity) Color Torque
M2.0 × 6 mm, flat-head, nylok-coated (3) Black 1.85 kgfcm
a
1
1
1
a
b
c
d
e
b
d
e
c