Lenovo B550 Hardware Maintenance Manual page 64

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 , and remove two screws .
2 3
3
3
2
When installing: Make sure that the connectors are attached firmly.
Step Screw (quantity) Color Torque
M2.5 × 5 mm, flat-head, nylon-coated (2) Black 2.0~2.5 kgf·cm
3
60