I PUT THE BRAND NEW TONER CATRIDGE AND THE ITS PRINTING WITH TOO MUCH INK .ITS ALL DARK ALL THE FAXES OR COPY IS COMING TOO DARK.SO WHAT IS THE PROBLEM

The ink toner is is now infected by foriegn matters by effecting the printer laser head.Tries air compressor machine blow out the ink toner print head ink injector and laser printer print head.Wait about and hour reinstall the the ink toner to the printer,the toner should work find again.Not the ink toner is not saveable,must have be replace for normal operation again.

don't always believe what they say. just because its "supposed to " last a certain amount of time, doesn't mean it will. Once you get the insides dirty, its hard to get them straight again. Sometimes there is build up on the printer head from a leaky cartridge. I'm just guessing cause I had a similar brand that was brand new act up on me and because I was printing bold it started rolling the paper. I put it on economy printing to save toner and after a few runs, it cleared up. plus using a watermark helped but don't think that will help you in your situation.
Sometimes when I get a streak on one side its from light coming in from somewhere and it thinks its part of the image and prints it. If you make sure that your material is flat and not allowing light to come in or its firmly against the glass it might help.

New cartridge wouldnt print but sounded like it was printing. You can check ink levels clean or align cartridge by pushing menu then tools. I cleaned contact points w qtip and alcohol. What seemed to work is putting alcohol on cartridge where ink is released and putting back into machine wet did this three times first time little dots of ink then a faint print and now it is printing must have been dried ink further then I could access.

Did you clean beneath copy glass ( adf copy glass and platen )?Did you clean scaner also?
Clean the laser unit.
Not genuine toner isnt best solution.

Try to print something.If the print is OK, then the problem is in copy glass and scaner.

do a quick check on 2 things.
- Copy a document(put a printed page on document feeder and press Copy button) , has the Copy come ok? if copy is also blank that means toner/ink problem, needs to be replaced.

- check with your Fax receive Print settings. is any setting of econo mode/ contrast/brightness Off the track? If found any of such issue then Reset it or put it on average (middle).

Hope this will put your Brother on the track

Yes , if the fax machine says low ink or toner , then it needs it alos check the drum corona wire, It may need cleaning, and you can clean it using a #2 lead pencil eraser, Gently in the wire, then replace wire and try receiving a fax.

Remove the toner cartridge and use a soft cloth to wipe the photo drum clean of toner. Put it back and try again, if you still get bad prints, then you need a new toner cartridge.

plull the drum out...and clean the roller....you will be able to see the ink on the roller where your lines are appearing.

have you replaced the drum??? are you using brother oem toner???? generic toner will give you all kinds of problems

1. It tries to pump toner into a reservoir. If it doesn't activate a full sensor for the reservoir, it shows toner low. 2. Take the toner out and shake it hard about 10 times, this will make any settled toner loose, and should solve this. The problem is normally caused by old toner (your supplier might have had it on their shelf for a year or two).