68
Replacing the toner cartridge A
Order No. TN-720, TN-750
The Standard toner cartridge can print 
approximately 3,000 pages
1
. The High Yield 
toner cartridge can print approximately 8,000 
pages
1
. Actual page count will vary 
depending on your average type of 
document.
When the toner cartridge is running low, the 
LCD shows Toner Low.
The toner cartridge that comes supplied with 
the machine will need to be replaced after 
approximately 2,000 pages
1
 for 
MFC-8510DN and approximately 3,000 
pages
1
 for MFC-8710DW and 
MFC-8910DW.
1
Approx. cartridge yield is declared in accordance 
with ISO/IEC 19752.
• It is a good idea to keep a new toner 
cartridge ready for use when you see the 
Toner Low warning.
• To ensure high quality printing, we 
recommend that you use only Genuine 
Brother Brand toner cartridges. When you 
want to buy toner cartridges, please call 
Brother Customer Service.
• If you print graphics, bold text, charts, 
Web pages with borders, and other types 
of printouts that consist of more than 
simple text, the amount of toner used will 
increase.
• We recommend that you clean the 
machine when you replace the toner 
cartridge. (See Advanced User's Guide: 
Cleaning and checking the machine.).
• If you change the print density setting for 
lighter or darker printing, the amount of 
toner used will change.
• Wait to unpack the toner cartridge until 
immediately before you put it into the 
machine.
 
Toner Low A
 
Toner Low
Prepare...
If the LCD shows Toner Low, buy a new 
toner cartridge and have it ready before you 
get a Replace Toner message.
Replace Toner A
When the following message appears on the 
LCD, you need to replace the toner cartridge:
 
Replace Toner
Open the...
The machine will stop printing until you 
replace the toner cartridge. A new genuine 
Brother toner cartridge will reset the Replace 
Toner mode.