A test procedure control unit outputs control information for carrying out a transition test of a mobile communication terminal of a cellular system for a predetermined number of times. The grinding mechanism has a female grinder and a male grinder rotatable in the female grinder for grinding condiment seeds in an annular gap between the grinders. The front disc has a center opening for introducing an oil-contaminated air. On the other hand, the terminal lowers the power of the output laser beam to a predetermined level if the power drop is determined to be due to blockage thus avoiding harm to accidental observers that might intrude into the path of the laser beams.