Acer A315-53G Service Manual page 204

Connect the speaker cable to the mainboard connector.
3.
Attach the mylar to secure the speaker cable, HDD cable, and WLAN antenna cables in place.
4.
Install the battery (see
5.
5-64
Figure 5-94. Connecting the Speaker Cable
Figure 5-95. Attaching the Mylar
Battery Installation on page 5-34).
Service and Maintenance