Remove The Heat Sink - Lenovo ThinkBook 13X Hardware Maintenance Manual

"Remove the lower case" on page 28
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.
Step 2. Remove two screws and then remove the Type C bracket.
Figure 10. Remove two screws and remove the Type C bracket
Screw specifications
M2.0 x L3.5
Go to
https://support.lenovo.com/partslookup
part:
Type C bracket

Remove the heat sink

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 28
"Remove the system board mylar" on page 30
Step 1. Remove four screws and then remove the heat sink.
Figure 11. Remove four screws and remove the heat sink
Number of screws
2
to look up the Lenovo part number of the following replacement
.
Chapter 4 Removing a FRU or CRU
33