86 A AppendixA.3 Life of Consumables and RegularReplacement PartsLife of ConsumablesImportant• The possible number of pages that can be printed with the toner cartridge is the number of pages printedcontinuously at a print ratio of 5% using A4 size paper. The replacement cycle varies according to theconditions of use.• The possible number of pages that can be printed of the drum cartridge is based on the continuousprinting on A4 size paper with a print ratio of 5%, the color and monochrome ratio is 2:1, and printing twopages at one time in average. The possible number of pages that can be printed differs according tofactors such as the print contents, paper size, paper type, environment used, and the frequency that theprinter is turned on and off.Life of Regular Replacement PartsNote• The number of sheets listed under lifespan is the number of pages that is based on the continuousprinting on A4 size paper with a print ratio of 5%, the color and monochrome ratio is 2:1, and printing twopages at one time in average.• As the lifespan differs according to factors such as the print contents, paper size, paper type,environment used, and the frequency of switching on/off the power to the printer, think of it as aguideline.• Service engineer will replace the regular replacement parts.• The message to prompt you to replace these parts is displayed when the number of remaining pagesthat can be printed reaches 1000 sheets.Functional PartsOur company will keep the functional parts (parts essential for the machine functions) of theprinter for replacement for 7 years after we have stopped manufacturing it.Product name Possible number of pages printedToner cartridge 4K About 4,000 pagesToner cartridge 1.5K About 1,500 pagesDrum cartridge (Including the waste toner cartridge) About 14,000 pagesProduct name Life spanFuser unit About 100,000 sheetsBTR unit assy About 100,000 sheetsDeve assy K About 100,000 sheetsDeve assy Y, M, C About 67,000 sheets