It is also important to locate the emergency power shut-off equipment connected to the drive. In case of an emergency, it is important to have at least two individuals working on the replacement. If an emergency situation occurs, help is available to call for emergency assistance or shut off the power using the emergency shutoff device First, if possible remove the defective board with the signal wires still attached and place it on a clean and stable surface with an EDS protective surface underneath it. For example, a flat static protective bag. Wear a wrist strap and place the replacement board next to the old board. And one at a time moves the signal wires from the old board to the new board.