I replaced the toner for brother MFC 7860DW and still getting replace toner message. I cannot print. Please help. thanks

I have a brother printer too, nine times out of ten you have to make sure everything is closed tight

Time to really order a new drum and really replace with a new one.
Resetting the drum unit will not improve print quality. It only resets your drum and allows you to continue to print. You decide when to replace the drum unit not the manufacturer!

1.Remove the drum unit and toner cartridge. Wait 1 or 2 minutes.
2.Replace the drum unit and toner cartridge into printer.
3.The error message "Change Drum Soon/Drum end soon" will continue to appear if the drum counter was not reset when you replace the drum unit.
4.To clear this error message, you need to reset the drum counter as instructed below.
5.Make sure that the machine is turned on.
6.Press Options.
To confirm you are installing a new drum, press 1.
7.When the LCD shows Accepted, close the front cover.
8.Your drum is now reset.

Go to the printer's settings menu and look for an option to "Restore Default Settings" or similar words.

Hello,

You must reset the drum counter in order to print again. Here is the method http://support.brother.com/g/b/faqend.aspx?c=us&lang=en&prod=hl2280dw_us&faqid=faq00002837_000#instruction

Press Menu, 2, 5, 3.
Press Start.
Press Stop/Exit.
Manual page 29
http://www.brother-usa.com/VirData/Content/en-US/MFC/Consumer/UsersManual/UM_MFC_7360N_7460DN_7860DW_EN_2849.PDF

Open the front cover of the printer
Press and release the "clear" key
Press "start", then press the up arrow until you see the number 12 on the display
Press "ok", you will see "accepted" on the display
Close the front cover, your toner cartridge should now work.

Try cleaning the corona wire on each toner cartridge. This may help solve your solution.
If this does not help try another thing.
Try and replace the toner cartridge. Maybe your toner cartridge needs to be replaced. Usualy when printed images are light or pale a toner cartridge replacement is recommended.
To see how to replace your toner cartridges check here

found this for you https://help.brother-usa.com/app/answers/detail/a_id/65763/~/how-do-i-clear-the-message-print-unable-25%3F

I have a Brother MFC-440CN fax machine and I am receiving error message "unable to clean 50". Can anyone help me to fix this error problem