Remove The Fans; Make Sure The Following Frus (Or Crus) Have Been Removed - Lenovo 20V9003DIX Hardware Maintenance Manual

Figure 10. Peel off the pieces of tape
Step 3. Remove three screws and then remove the heat sink.
Figure 11. Remove three screws and then remove the heat sink
Screw specifications
M2 x L3
Go to
https://support.lenovo.com/partslookup
part:
Heat sink

Remove the fans

Make sure the following FRUs (or CRUs) have been removed.

"Remove the lower case" on page 35
"Remove the heat sink" on page 37
Step 1. Disconnect the battery pack cable from the system board.
Attention: Use your fingernails to pull the connector to unplug it. Do not pull the cable.
38
Hardware Maintenance Manual
Number of screws
3
to look up the Lenovo part number of the following replacement