Lenovo ThinkPad T431s Hardware Maintenance Manual - Page 78

System board and media card reader slot

Page 78 highlights

5 1120 System board and media card reader slot Important notices for handling the system board When handling the system board, read the following: • The system board has an accelerometer, which can be broken when several thousands of G-forces are applied. Note: Dropping a system board from a height of as little as 6 inches so that it falls flat on a hard bench can subject the accelerometer to as much as 6,000 G's of shock. • 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 material. For access, remove these FRUs in order: • "1010 Base cover" on page 57 • "1020 Hard disk drive or solid-state drive" on page 58 • "1030 M.2 wireless LAN card" on page 59 • "1040 M.2 wireless WAN card" on page 60 • "1050 Memory module" on page 61 • "1060 Backup battery" on page 62 • "1070 Battery pack" on page 63 • "1090 Thermal fan assembly" on page 68 72 Hardware Maintenance Manual

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5
1120 System board and media card reader slot
Important notices for handling the system board
When handling the system board, read the following:
The system board has an accelerometer, which can be broken when several thousands of G-forces
are applied.
Note:
Dropping a system board from a height of as little as 6 inches so that it falls flat on a hard bench
can subject the accelerometer to as much as 6,000 G's of shock.
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 material.
For access, remove these FRUs in order:
“1010 Base cover” on page 57
“1020 Hard disk drive or solid-state drive” on page 58
“1030 M.2 wireless LAN card” on page 59
“1040 M.2 wireless WAN card” on page 60
“1050 Memory module” on page 61
“1060 Backup battery” on page 62
“1070 Battery pack” on page 63
“1090 Thermal fan assembly” on page 68
72
Hardware Maintenance Manual