Lenovo ThinkPad 11e Hardware Maintenance Manual - Page 72

Removal steps of the media-card-reader board Step 1 Screw (quantity) M2 × L3 mm, flat-head, nylon-coated (2) 1 1 2 Color Black Torque 0.181 Nm (1.85 kgf-cm) 5 3 4 When installing: Ensure that the connector is attached firmly. 1090 System board assembly, dc-in connector, and thermal fan 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 15 cm (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 material. 66 ThinkPad 11e and ThinkPad Yoga 11e Hardware Maintenance Manual