1170 System Board - Lenovo 20Y7 Hardware Maintenance Manual

Removal steps of the earbud tray front bezel

1170 System board

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 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.
ThinkPad E14 Gen 3 and ThinkPad E15 Gen 3 share a common system board. 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.
Brand name
ThinkPad E14 Gen 3
ThinkPad E15 Gen 3
For access, remove these FRUs in order:
• "1010 Base cover assembly" on page 64
• "1030 Memory module and memory module bracket" on page 68
• "1040 M.2 solid-state drive" on page 68
• "1020 Built-in battery" on page 67
• "1060 Wireless LAN card" on page 71
• "1070 Thermal fan assembly" on page 72
Attention: The following components soldered on the top side of the system board are extremely sensitive.
When you service the system board, avoid any kind of rough handling.
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E14 Gen 3 / E15 Gen 3 Hardware Maintenance Manual
Machine types
20Y7, 20YD, 20YE, and 20YF
20YG, 20YH, 20YJ, and 20YK