Chapter 11-35F-1-33F-1-346) Turn on the main power switch.1.2.5 Safety1.2.5.1 Safety of the Laser Light 0007-3174iR2270 / iR2870 / iR3570 / iR4570 / / / / / iR2230 / / iR3530 /Laser light can prove to be hazardous to the human body. The machine's laser unit is fully enclosed in a protective housing and external covers so that its light willnot escape outside as long as the machine is used normally.1.2.5.2 CDRH Regulations 0007-3175iR2270 / iR2870 / iR3570 / iR4570 / / / / / iR2230 / / iR3530 /The Center for Devices and Radiological Health of the US Food and Drum Administration put into force regulations concerning laser products on August 2, 1976.These regulations apply to laser products manufactured on and after August 1, 1976, and the sale of laser products not certified under the regulations is bannedwithin the Untied States. The label shown here indicates compliance with the CDRH regulations, and its attachment is required on all laser products that are soldin the United States.F-1-35A different description may be used for a different product.1.2.5.3 Handling the Laser Unit 0007-3176iR2270 / iR2870 / iR3570 / iR4570 / / / / / iR2230 / / iR3530 /If you must service the area around the machine's laser unit, be sure to take full care to avoid exposure to laser light: do not insert a tool (e.g., screwdriver or thosewith a high reflectance) into the laser path; also, remove watches, rings, and the like before starting the work, as they reflect laser light.The machine's laser light is red in color, and an appropriate label ([1], [2]) is attached to all covers that can reflect laser light. Keep also in mind that the machine'slaser unit cannot be adjusted in the field.