Remove The Heat Sink - Lenovo ThinkBook Plus Gen 4 Hardware Maintenance Manual

Figure 8. Disconnect the cables, remove six screws and the speakers
Screw specifications
M2 × L2
Go to https://support.lenovo.com/partslookup
replacement part:
Speakers

Remove the heat sink

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 26
Step 1. Disconnect the battery pack cable from the system board. Then, loosen four screws in alphabetical
order and remove the heat sink from the bottom side.
Attention: Use your fingernail to pull the connector to unplug it. Do not pull the cable.
Number of screws
6
to look up the Lenovo part numbers of the following
.
Chapter 4 Removing a FRU or CRU
31