Our lift won't go down unless you use the manual control, so it takes 2 people to operate it. Is there a common problem to look for? I've got a schematic but never worked on one of these before. https://www.skytrak.com/Content/files/JLGManuals/Parts-3121247-02-01-18-Gl.pdf
I also found this document which has a procedure I don't fully understand yet to diagnose the failure to go down when using the joystick. pg 88 https://techpub.skyjack.com/document/?type=manual&id=5567