Lenovo B550 Notebook - Manual (Page 64)

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Lenovo B550 Hardware Maintenance Manual
Figure 13. Removal steps of system board (continued)
Unplug two connectors (bluetooth connector and speakers connector) in the
direction shown by arrow
2
, and remove two screws
3
.
3
3
2
When installing: Make sure that the connectors are attached firmly.
Step Screw (quantity) Color Torque
3
M2.5 × 5 mm, flat-head, nylon-coated (2) Black 2.0~2.5 kgf·cm