Lenovo B590 Notebook - Manual (Page 70)

Detach the DC-in cable 11 . Remove the system board in the direction shown by the arrow 12 .
12
11
Removal steps of USB board
Remove the screw 1 , and then detach the connectors as shown in the following illustration. Remove
the USB board 4 .
3
2
1
4
Step Screw (quantity) Color Torque
1 M2 × 5 mm, flat-head, nylon-coated (1) Black 1.85 kgf-cm
When installing: Ensure that the cable is attached firmly to the system board.
64 Hardware Maintenance Manual