Remove The Fans - Lenovo Yoga 9i Hardware Maintenance Manual

"Remove the lower case" on page 29
Step 1. Disconnect the battery pack cable from the system board. Then, loosen three screws in
alphabetical order and remove the heat sink.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
Figure 12. Loosen three screws and remove the heat sink
Go to
https://support.lenovo.com/partslookup
replacement part:
Heat sink

Remove the fans

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 29
"Remove the heat sink" on page 34
Step 1. Disconnect the battery pack cable and the I/O board cables from the system board.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
to look up the Lenovo part numbers of the following
.
Chapter 4 Removing a FRU or CRU
35