In the computer game the legend of crystal valley how do you fix the robot

Did you pick up the arm and leg? Did you find all 3 pieces for the robot's sketch? There is one in the library the operating room and the machine room. After finding those go to the room on the left. ( it has a huge machine) Put the paper together and put it in the slot on the right. Next you put either the leg or arm in. (for the arm press yellow, purple, the leg-- green, purple) they should say the piece is fixed. then go to the operating room and put the pieces on the robot.