Lenovo B490 Hardware Maintenance Manual page 73

• "1130 Microphone assembly" on page 58
• "1140 Media card reader slot board" on page 59
• "1150 System board assembly and USB board" on page 60
Removal steps of LCD unit
Release the antenna cables from the cable guides. Then remove the screws
Step Screw (quantity)
1
M2.5 × 6 mm, flat-head, nylon-coated (4)
When installing:
• Route the antenna cables along the cable guides. As you route the cables, make sure that they are
not subjected to any tension. Tension could cause the cables to be damaged by the cable guides,
or a wire to be broken.
• Ensure that the LCD connector is attached firmly and make sure that you do not pinch the antenna cables
when you attach the LCD assembly. Route the LCD cable along the cable guides.
1 .
Color Torque
Silver 4.0 kgf-cm
.
Chapter 7 Removing and replacing a FRU
67