I just purchased a used hl-2. Got it hooked up today and I get a couple alerts, 102 servo stop and 107 emergency stop. the book says it could be from the e-stop and to hit reset 2 times.
No matter what I do I can't get these to clear. I think it will be something small but I don't have a clue.
Any help on getting this running would be GREAT!

Did you release the e-stop nutton by giving it a twist clockwise; it locks on when it is pushed.

Yes, I wonder if they could have changed something before they shipped it. It also says "unclamped".