Lenovo ThinkPad X1 Hardware Maintenance Manual - Page 86

System board and base cover assembly, When installing

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5 4 6 Step 4 Screw (quantity) Color M2 x 3 mm (1) Black When installing: Make sure that the connector 5 is attached firmly. Torque 0.181 Nm (1.85 kgfcm) 1160 System board and base cover assembly Important notices for handling the system board: When handling the system board, bear the following in mind. • The system board has an accelerometer, which can be broken by applying several thousands of G-forces. 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. • If a system board is dropped, test it using PC-Doctor for DOS if the system supports PC-Doctor for DOS, to make sure that the Active Protection System™ is still functioning. 80 Hardware Maintenance Manual

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4
5
6
Step
Screw (quantity)
Color
Torque
4
M2 x 3 mm (1)
Black
0.181 Nm
(1.85 kgfcm)
When installing:
Make sure that the connector
5
is attached firmly.
1160 System board and base cover assembly
Important notices for handling the system board:
When handling the system board, bear the following in mind.
•
The system board has an accelerometer, which can be broken by applying several thousands of G-forces.
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.
•
If a system board is dropped, test it using PC-Doctor for DOS if the system supports PC-Doctor for DOS,
to make sure that the Active Protection System
™
is still functioning.
80
Hardware Maintenance Manual