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Step
Screw (quantity)
5
M2 × L2 mm, flat-head, nylon-coated (2)
6
M2 × L2.5 mm, flat-head, nylon-coated (2)
Attention: When you route the cables, ensure that they are not subject to any tension. Tension could cause
the cables to be damaged by the cable guides, or a wire to be broken.
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 six 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 material.
For access, remove these FRUs in order:
• "1010 Base cover assembly" on page 59
• "1020 2242 M.2 solid-state drive" on page 61
• "1030 Wireless-WAN card (for selected models)" on page 62
• "1040 Thermal fan assembly" on page 63
• "1060 Built-in battery" on page 65
• "1070 I/O bracket" on page 66
• "1130 SSD-WWAN board" on page 72
Color
Torque
Silver
0.098 Nm
(1.05 kgf-cm)
Black
0.098 Nm
(1.05 kgf-cm)
.
Chapter 8
Removing or replacing a FRU
73
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