Remove The System Board And The Touchpad Board Cable - Lenovo V14 Gen 3 Hardware Maintenance Manual

Figure 60. Separate the I/O board cable from the I/O board
Go to https://support.lenovo.com/partslookup
replacement parts:
I/O board
I/O board cable

Remove the system board and the touchpad board cable

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 54
"Remove the hard disk drive (HDD) module" on page 55
"Remove the battery pack" on page 56
"Remove the solid-state drive (SSD) module" on page 57
"Remove the Wi-Fi card" on page 58
"Remove the CMOS battery" on page 59
"Remove the memory module" on page 60
"Remove the heat sink" on page 61
"Remove the fan" on page 61
Step 1. Remove two screws and then open the hinge.
Figure 61. Remove two screws and then open the hinge
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Hardware Maintenance Manual
to look up the Lenovo part numbers of the following