An employee was troubleshooting a planer machine. From a control station in the planer room, he raised the feed roller that was in the down position, to clear a board that was jammed in the machine. The employee went back to the control room and locked out the planer machine. He then reentered the planer room and removed the board that was jammed in the machine. After removing the board, a release of stored energy caused the side heads in the machine to rotate, catching the employee s hand in the process. The employee suffered an amputation of his right index finger and a partial amputation of the middle finger.