Remove The I/O Board Bracket (Left) - Lenovo 13ACN5 Hardware Maintenance Manual

Figure 23. Disconnect the speaker cable from the system board and release the speaker cable from the cable
guide
Step 4. Remove four screws and then remove the speakers.
Figure 24. Remove four screws and then remove the speakers
Screw specifications
M1.6 x L1.7
Go to https://support.lenovo.com/partslookup
part:
Speakers

Remove the I/O board bracket (left)

Make sure the following FRUs (or CRUs) have been removed.
"Remove the lower case" on page 36
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 left I/O board bracket.
Number of screws
4
to look up the Lenovo part number of the following replacement
.
Chapter 4 Removing a FRU or CRU
45