Acer AN515-51 Service Manual page 223

Firmly push down the hall sensor board into its slot until it is fully seated.
3.
Connect the hall sensor cable to the mainboard connector and secure the latch.
4.
Install the battery (see
5.
Service and Maintenance
Figure 5-125. Installing the Hall Sensor Board (2 of 2)
Figure 5-126. Connecting the Hall Sensor Cable (2 of 2)
Battery Installation on page 5-49).
5-85