Validate Joint Brake System
If it is suspected that the detection of a faulty brake system was due to a false detection, and that there is not anything wrong with the brake system, a manual inspection can be done.
In that case, the operator should note which joint is reported to have a faulty brake system. If in doubt, powering up the robot again after the control box is restarted will show the brake system error popup screen again and make the user interface show which joint is faulty.
To inspect the brake, move the part of the robot arm connected to the faulty joint in both directions to evaluate if it hits the brake pin or not. If the brake is correctly engaged only very limited motion of the joint (1-2 degrees) will be possible before hitting the brake pin.