When should I immediately turn off the unit and contact a service provider?

You should immediately turn off the unit if the power cord is damaged or abnormally warm, you smell a burning odor, the unit emits loud or abnormal sounds, a power fuse blows or the circuit breaker frequently trips, or water or other objects fall into or out of the unit. Do not attempt to fix these issues yourself; contact an authorized service provider immediately. (Page 38)