1150 System Board Assembly - Lenovo ThinkPad X1 Series Hardware Maintenance Manual

Step Screw (quantity)
3
M2 × L3.7+1.8 mm, flat-head shoulder, nylon-coated (6)

1150 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 71
• "1020 M.2 SSD and thermal pad" on page 73
• "1030 WWAN card" on page 74
• "1050 Thermal fan assembly" on page 75
• "1060 Built-in battery" on page 76
Removal steps of the system board assembly
This computer shares a common system board with another computer. After replacing the system board,
you will be prompted to input a brand name to correctly identify the machine type. The following table
contains the brand name required to complete this step.
Note: Input the exact brand name as shown in this table.
86
X1 Yoga and X1 Carbon Hardware Maintenance Manual
Color Torque
Black 0.181 Nm
(1.85 kgf-cm)