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1140 System board
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 6000 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 surface.
For access, remove these FRUs in order:
• "1020 Base cover assembly" on page 61
• "1030 Keyboard" on page 63
• "1060 Wireless LAN card" on page 65
• "1080 M.2 solid-state drive" on page 67
Removal steps of the system board
Step
Screw (quantity)
1
M2 × 4 mm, flat-head, nylon-coated (3)
Color
Torque
Black
0.18 +/- 0.015Nm
(1.85 +/- 0.15 kgf-cm)
.
Chapter 8
Removing or replacing a FRU
73
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