Zoom control issue...

[OlWiseRedEye]

My brother was messing around with my DVX100A and somehow turned off the zoom control. Not the handlezoom, I know how to click the settings for that. The main zoom control directly above the mini-dv drive. How do I fix this?

 

[HorseFilms]

At the front of the camera, just below the lens, there's a switch that reads both "servo" and "manual." Switch it to servo.