1120 System Board - Lenovo 21JK Hardware Maintenance Manual

Step Screw (quantity)
5
M2 × L1.7 mm, flat-head, nylon-coated (7)
Notes:
• A mylar might cover the trackpad, and ensure that you attach the mylar to the trackpad after replacement.
• Ensure that the connector is attached firmly.

1120 System board

Important notices for handling the system board:
When handling the system board, read the following:
• Some components mounted on a system board are very sensitive. Improper handling of a system board
can cause damage to those components, and may cause a system malfunction.
• 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 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.
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ThinkPad E14 Gen 5 / ThinkPad E16 Gen 1 Hardware Maintenance Manual
Color Torque
White 0.147 Nm
(1.5 kgf-cm)