Figure 4. Remove the lower case
Go to
https://support.lenovo.com/partslookup
part:
Lower case
Remove the battery pack
Make sure the following FRU (or CRU) have been removed.
"Remove the active pen" on page 28
"Remove the lower case" on page 29
Step 1.
Disconnect the battery 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 Yoga C940–15IRH Hardware Maintenance Manual
to look up the Lenovo part number of the following replacement