iv Phaser 8400/8500/8550/8560 Color Printer Service ManualSymbols Marked on the ProductRead and obey all posted warning labels. Throughout the printer, warninglabels are displayed on potentially dangerous components. As you service theprinter, check to make certain that all warning labels remain in place.Power Safety PrecautionsPower SourceFor 115 VAC printers, do not apply more than 135 volts RMS between thesupply conductors or between either supply conductor and ground. For 230VAC printers, do not apply more than 254 volts RMS between the supplyconductors or between either supply conductor and ground. Use only thespecified power cord and connector. This manual assumes that the reader isa qualified service technician.Plug the three-wire power cord (with grounding prong) into a grounded ACoutlet only. If necessary, contact a licensed electrician to install a properlygrounded outlet. If the product loses its ground connection, contact withconductive parts may cause an electrical shock. A protective groundconnection by way of the grounding conductor in the power cord is essentialfor safe operation.Disconnecting PowerWarningThe power switch does not completely de-energize the printer. You mustalso disconnect the power cord from the printer’s AC inlet. Disconnect thepower cord by pulling the plug, not the cord.Disconnect the power cord in the following cases:■ if the power cord or plug is frayed or otherwise damaged,■ if any liquid or foreign material is spilled into the product,■ if the printer is exposed to any excess moisture,■ if the printer is dropped or damaged,■ if you suspect that the product needs servicing or repair,■ whenever you clean the product.Use caution (or draws attention to a particular component). Referto the manual(s) for information.Hot surface on or in the printer. Use caution to avoid personalinjury.