1140 I/O Board - Lenovo B490 Hardware Maintenance Manual

1140 I/O board

For access, remove these FRUs in order:
• "1010 Battery pack" on page 44
• "1020 Bottom slot cover" on page 44
• "1030 Optical drive" on page 45
• "1090 Keyboard" on page 51
• "1100 Keyboard bezel" on page 54
Removal steps of I/O board
Remove the screws 1 , and then detach the cable.
Step Screw (quantity)
1
M2 × 6 mm, flat-head, nylon-coated (2)
When installing: Ensure that the cable is attached firmly to the system board.
Color Torque
Black 1.85 kgf-cm
.
Chapter 7 Removing and replacing a FRU
59