Lenovo B490 Hardware Maintenance Manual - Page 66

System board assembly and USB board, 1060 PCI Express Mini Card for wireless LAN

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Remove the I/O board 4 . 4 1150 System board assembly and USB board Important notices for handling the system board: When handling the system board, bear the following in mind: • Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite. • Avoid rough handling of any kind. • At every point in the process, be sure not to drop or stack the system board. • If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a corrugated conductive surface. 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 • "1040 Memory modules" on page 46 • "1050 Hard disk drive assembly" on page 47 • "1060 PCI Express Mini Card for wireless LAN" on page 49 • "1070 mSATA solid state drive" on page 50 • "1080 Backup battery" on page 51 • "1090 Keyboard" on page 51 • "1100 Keyboard bezel" on page 54 • "1130 Microphone assembly" on page 58 60 Hardware Maintenance Manual

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Remove the I/O board
4
.
4
1150 System board assembly and USB board
Important notices for handling the system board:
When handling the system board, bear the following in mind:
•
Be careful not to drop the system board on a bench top that has a hard surface, such as metal, wood, or composite.
•
Avoid rough handling of any kind.
•
At every point in the process, be sure not to drop or stack the system board.
•
If you put a system board down, be sure to put it only on a padded surface such as an ESD mat or a corrugated
conductive surface.
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
•
“1040 Memory modules” on page 46
•
“1050 Hard disk drive assembly” on page 47
•
“1060 PCI Express Mini Card for wireless LAN” on page 49
•
“1070 mSATA solid state drive” on page 50
•
“1080 Backup battery” on page 51
•
“1090 Keyboard” on page 51
•
“1100 Keyboard bezel” on page 54
•
“1130 Microphone assembly” on page 58
60
Hardware Maintenance Manual