Remove The System Board - Lenovo Yoga Slim 9i Hardware Maintenance Manual

Figure 24. Remove the touchpad board cables
Go to
https://support.lenovo.com/partslookup
replacements parts:
Touchpad board cables

Remove the system board

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 28
"Remove the battery pack" on page 29
"Remove the solid-state drive (SSD) module" on page 31
"Remove the heat sink" on page 33
"Remove the fans" on page 34
"Remove the I/O board bracket (right)" on page 37
"Remove the I/O board bracket (left)" on page 37
Step 1. Tear off the mylar stuck on the system board.
Figure 25. Tear off the mylar stuck on the system board
Step 2. Disconnect cables connected to the system board, USB board and I/O board.
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Hardware Maintenance Manual
to look up the Lenovo part number of the following