1160 System Board And Buzzer With Cable - Lenovo ThinkPad Hardware Maintenance Manual

P1 gen 4 and x1 extreme gen 4

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When installing:

• Ensure that the connector is attached firmly.

1160 System board and buzzer with cable

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 six 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.

For access, remove these FRUs in order:

• "1020 Nano-SIM-card tray (for selected models)" on page 63

• "1010 Base cover assembly" on page 61

• "1090 M.2 solid-state drive" on page 73

• "1030 Wireless WAN card (for selected models)" on page 63

• "1050 Built-in battery" on page 64

• "1060 Thermal fan assembly " on page 66

• "1040 Memory module" on page 63

• "1110 dc-in bracket and dc-in cable" on page 78

Attention: The microprocessor soldered on the system board is extremely sensitive. When you service the

system board, avoid any kind of rough handling.

Chapter 8

Removing or replacing a FRU

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