LG CineBeam AI ThinQ Owner's Manual page 59

Prepare Live TV
Watching TV broadcasting
1
Connect the broadcast antenna/cable to the projector. You may also connect
a piece of equipment that can receive broadcasting such as a set-top box
instead of the antenna/cable.
Run the (Q. Settings)
select the [Set-Top Box/OTT] that appears in the device list, and you can see
it.
2
Start the (Q. Settings)
Tuning]. Finds and adds only channels being broadcast.
[Connection] [Device Connector] and
[Channels] [Channel Tuning]
7
[Auto