Camera tilt doesn't work

[AWDRONE]

Hi,

I founded this post:

Camera Tilt not Working

Hi Rusty,   Thanks for your quick reply!   Yes, I left one 5V wire from the ESC and I did not modify the camera tilt servo wires (signal, 5V, and GND). I checked for voltage coming out of the channel that is connected to the servo (both channels 8 and AUX 2) but there is no 5V. Should 5V power be coming out of the servo constantly?   Thanks, Grover

The problem seems to be the same as mine, but I don’t understand how to check that the servo is plugged to power.
How to check that?