Remove The Audio Board - Lenovo Yoga C740 Series Hardware Maintenance Manual

Step 3. Carefully remove the speakers.
Figure 24. Remove the speakers
Go to
https://support.lenovo.com/partslookup
replacement parts:
Speakers

Remove the audio board

Make sure the following FRU (CRU) have been removed.
"Remove the lower case" on page 26
"Remove the battery pack" on page 27
Step 1. Remove two screws.
to look up the Lenovo part numbers of the following
.
Chapter 4 Removing a FRU or CRU
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