Brother International MFC 8890DW Service Manual - Page 59
Cartridge life, Toner life, Empty, s, Cartridge Life End, Toner Empty, Low-duty, High-duty - replace toner message
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3.4.2 Cartridge life A new toner cartridge can print approximately 3,000 (standard toner) or approximately 8,000 (high yield toner) A4 or Letter size single-sided pages at normal duty (ISO/IEC19752). In the case of low-duty printing, if the number of printed pages are reached the cartridge life, "Replace Toner" message appears on the LCD before the toner runs out because the developer roller surface or other toner sealing is worn out due to a rotation of the rollers. Toner life Full Normal-duty (ISO/IEC19752) Low-duty Low Empty High-duty Toner Empty Toner Empty Cartridge Life End pages Memo : • If reached the cartridge life end, "Replace Toner" message appears even if the toner is contained. As the deterioration of toner will be less in case of printing more pages continually once time than usual, the more printing pages per job, the more printable pages of toner cartridge. Table: The relationship between the average printing pages per job and the toner cartridge life Average printed pages (page/job) 1 2 3 4 5 6 7 8 Cartridge Life (Standard) 3,500 5,274 6,346 7,064 7,579 7,966 8,267 8,508 Cartridge Life (High Yield) 9,500 14,315 17,225 19,174 20,571 21,621 22,439 23,094 Increasing the number of times of power switch ON and warming operation in company with opening or closing cover will also cause the deterioration of toner, so the more frequency those operations be taken, the less pages the toner cartridge can print. Table: The toner cartridge lives in case of pressing power switch Off/ON before printing. Average printed pages (page/job) 1 2 3 4 5 6 7 8 Cartridge Life (Standard) 1,925 3,263 4,246 5,000 5,596 6,079 6,478 6,814 Cartridge Life (High Yield) 5,225 8,856 11,526 13,571 15,189 16,500 17,584 18,496 2-21 Confidential