Brother International HL-7050N Users Manual - English - Page 151

Toner cartridge A new toner cartridge contains enough toner to print up to 12,000 A4 or Letter-size single-sided pages at about 5% coverage. ■ Toner consumption varies according to the image coverage on the page and the print density setting. ■ The greater the image coverage, the greater the toner consumption. ■ If you change the print density setting for lighter or darker printing, toner consumption varies accordingly. ■ Wait to unpack the toner cartridge until immediately before you install it in the printer. TONER LOW Message (Appears at intervals) TONER LOW If the LCD shows TONER LOW, the toner cartridge has nearly run out of toner. Purchase a new toner cartridge and have it ready before you get a TONER EMPTY message. To replace the toner cartridge, see Replacing the toner cartridge in this chapter. TONER LIFE END message TONER LIFE END Check printed pages, page counter, and LCD messages routinely. When TONER LIFE END is displayed on the LCD, we have two conditions as to why this has happened. First condition: Actual: this is when the 'Actual' amount of toner in the toner cartridge has been used up. Second condition: Mechanical: this is when the 'Mechanical' components of the toner cartridge have physically reached the end of their life. For both conditions the printer will stop printing, until a new toner cartridge has been put into the printer. TONER LIFE END can only be cleared, by putting a new toner cartridge into the drum unit. 5 - 2 ROUTINE MAINTENANCE