1170 System Board Assembly - Lenovo ThinkPad X1 Carbon Gen 10 Hardware Maintenance Manual

Step Screw (quantity)
4
M1.6 × L2.6 mm, flat-head, nylon-coated (6)
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.

1170 System board assembly

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 64
• "1020 Built-in battery" on page 66
• "1030 M.2 SSD, bracket, and thermal pad" on page 67
• "1040 WWAN card (for selected models)" on page 67
• "1070 Thermal fan assembly" on page 70
• "1080 Audio board" on page 71
• "1090 USB board" on page 71
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XXX Hardware Maintenance Manual
Color Torque
Black or silver 0.181 Nm
(1.85 kgf-cm)