Lenovo B590 Hardware Maintenance Manual - Page 70
Detach the DC-in cable, Ensure that the cable is attached firmly to the system board.
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Detach the DC-in cable 11 . Remove the system board in the direction shown by the arrow 12 . 11 12 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 1 Screw (quantity) M2 × 5 mm, flat-head, nylon-coated (1) Color Black When installing: Ensure that the cable is attached firmly to the system board. 64 Hardware Maintenance Manual Torque 1.85 kgf-cm
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