xxi• The laser beam can be harmful to human bodies. Since radiation emitted inside theprinter is completely confined within protective housings and external covers, thelaser beam cannot escape from the printer during any phase of user operation. Readthe following remarks and instructions for safety.- Never open covers other than those instructed in this manual.- Do not remove the caution label attached to the cover of the laser scanner unit.- If the laser beam escapes from the printer, exposure may cause serious damage toyour eyes.Maintenance and InspectionsWARNING• When cleaning the printer, turn OFF the printer and computer, remove the USB cable,and then unplug the power plug. Failure to observe these steps may result in a fire orelectrical shock.• Unplug the power plug from the AC power outlet regularly, and clean the area aroundthe base of the power plug's metal pins and the AC power outlet with a dry cloth toensure that all dust and grime is removed. If the power plug is plugged for a longperiod of time in a damp, dusty, or smoky location, dust can build up around thepower plug and become damp. This may cause a short circuit and result in a fire.• Clean the printer using a slightly dampened cloth with water or a mild detergentdiluted with water. Do not use alcohol, benzene, paint thinner, or other flammablesubstances. If flammable substances come into contact with electrical parts insidethe printer, it may result in a fire or electrical shock.• There are some areas inside the printer which are subject to high-voltages. Whenremoving jammed paper or when inspecting the inside of the printer, do not allownecklaces, bracelets, or other metal objects to touch the inside of the printer, as thismay result in burns or electrical shock.• Do not throw a used toner cartridge into open flames, as this may cause the tonerremaining inside the cartridge to ignite, resulting in burns or a fire.
