Reading this manual CAUTIONS Explain warnings which, if not observed, may cause serious injury or even death. NOTICES Explain precautionswhich, if not observed, may cause damages or failures in the vehicle or devices. Represents operation or operating steps following number sequence. STEP Indicates actions (pushing, turning, etc.) used to operate switches and other devices. Indicates results of opera- tion(eg. Lid is open). Represents "Keep off","Do not do this","Please avoid this sit- uation ". 20 1 2 1 2 H50138O H51000O 2 2 H50138O H51000O