1120 System Board - Lenovo K14 Gen 1 Hardware Maintenance Manual

When installing: 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.
• 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 surface.
• Avoid bending a system board and hard pushing to prevent cracking at each BGA (Ball Grid Array) chipset.
For access, remove these FRUs in order:
• "1010 Base cover assembly" on page 60
• "1020 Hard disk drive, cable and bracket (for 38 W built-in battery model)" on page 61
• "1030 Built-in battery" on page 63
• "1040 M.2 solid-state drive and thermal pad" on page 64
• "1050 Wireless LAN card" on page 65
• "1060 Coin-cell battery" on page 66
• "1070 Heatsink" on page 67
• "1090 Memory module" on page 69
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.
Lenovo K14 Gen 1
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Lenovo K14 Gen 1 Hardware Maintenance Manual
Machine types (MT): 21CS, 21CT, 21CU, 21CV