Remove The Fan; Remove The I/O Board - Lenovo 15ALC05 Hardware Maintenance Manual

Screw specifications
M2 x L3
Go to https://support.lenovo.com/partslookup
part:
Heat sink

Remove the fan

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 34
"Remove the battery pack" on page 35
"Remove the heat sink" on page 37
Step 1. Disconnect the fan cable from the system board. Remove two screws and then remove the fan.
Figure 12. Remove two screws and remove the fan
Screw specifications
M2 x L5
Go to
https://support.lenovo.com/partslookup
part:
Fan

Remove the I/O board

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 34
"Remove the battery pack" on page 35
Step 1. Disconnect the I/O board cable from the system board and then remove three screws.
38
Hardware Maintenance Manual
Number of screws
5
to look up the Lenovo part number of the following replacement
Number of screws
2
to look up the Lenovo part number of the following replacement