Troubleshooting and routine maintenance155CReplacing a toner cartridge CThe 485-7 cartridges can print approximately8,000 pages 1 and the Standard tonercartridges can print approximately 3,000pages 1 . Actual page count will varydepending on your average type of document(i.e., standard letter, detailed graphics). Themachine is supplied with the Standard tonercartridge that will need to be replaced afterapproximately 3,000 pages 1 . When a tonercartridge is running low, the LCD showsToner Low.1 Approx. cartridge yield is declared in accordancewith ISO/IEC 19752.NoteIt is a good idea to keep a new tonercartridge ready for use when you see theToner Low warning.CAUTIONHOT SURFACEAfter you have just used the machine, someinternal parts of the machine will beextremely hot. To prevent injury, when youopen the front or back cover (back outputtray) of the machine DO NOT touch theshaded parts shown in the illustration. If youdo this you may get burned.a Press the front cover release button andopen the front cover.b Slowly take out the drum unit and tonercartridge assembly.IMPORTANT• We recommend that you put the drum unitand toner cartridge assembly on a clean,flat surface with a sheet of disposablepaper or cloth underneath it in case youaccidentally spill or scatter toner.• To prevent damage to the machinecaused by static electricity, DO NOT touchthe electrodes shown in the illustration.