Remove The Coin-Cell Battery; Remove The System Fan - Lenovo V17 Gen 2 Hardware Maintenance Manual

"Remove the lower case" on page 32
"Remove the system fan" on page 44
"Remove the USB board" on page 46
Step 1. Remove the USB board cable.
Figure 29. Remove the USB board cable
Go to https://support.lenovo.com/partslookup
replacement parts:
USB board cable

Remove the coin-cell battery

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 32
Step 1. Disconnect the battery pack cable from the system board.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
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Lenovo V17 Gen 2 Hardware Maintenance Manual
to look up the Lenovo part numbers of the following