128Replacing the toner cartridge(485-5) CThe toner cartridge can print approximately7,000 pages using a high yield tonercartridge. When the toner cartridge is runninglow, the LCD shows Toner Low. Actualpage count will vary depending on youraverage type of document (i.e., standardletter, detailed graphics).NoteIt is a good idea to keep a new tonercartridge ready for use when you see theToner Low warning.Discard the used toner cartridge according tolocal regulations, keeping it separate fromdomestic waste. Be sure to seal up the tonercartridge tightly so that toner powder does notspill out of the cartridge. If you havequestions, call your local waste disposaloffice.We recommend that you clean the machineand corona wire of the drum unit when youreplace the toner cartridge. (See Cleaning thelaser scanner window on page 124 andCleaning the corona wire on page 126.)Replacing the toner cartridge CHOT SURFACEAfter you have just used the machine, someinternal parts of the machine will beextremely hot. When you open the front orback cover of the machine, DO NOT touchthe shaded parts shown in the illustration.a Open the front cover and take out thedrum unit and toner cartridge assembly.