Brother DCP 7010 Multifunction Laser Copier "black lines down page" Questions

...black lines will appear horizontally across the page equi-spaced down the page. If I turn the printer of and put it on again it prints perfect for another 5 or 6 pages. Can you help? many thanks ...

...black line down center I have a Brother HL5250DN printer and after 10 pages it starts printing a thick black line down the center of the pages. But later when I start again, it starts clean then does ...

...black line running across the page about 2/3 of the way down the page. I have cleaned and the changed the cartridge. Still the black line. Any idea of what to do? Thank you Mike In service mode look ...

black line down the page. It doesnt do the black line when I print from the computer. Is this something that can be corrected? Thanks. Clean the paper path for the scan/fax portion.  The original

...down the page. Most likely you have a defective black toner cartridge. Open the front shutter on the black toner and look at the drum. If you see the drum has toner on it corresponding to the line ...

...If the line runs the way that the paper does I.E. vertical on a portrait then it is dirty rollers normally. If you open the lid and wipe the rollers this shoukd reduce or eliminate the black

black lines across the page. Is there a way to tell if it is the fuser or the cartridge? yes you have to catch printer making the line and then as a page is being printed you need to open door to stop

...the page. Printing on the rest of the page is fine, but there are two lines down the page which are faint. If the faint output is in black color you need to change black developer in Imaging

when I photocopy I get a black line down the page, I am using a C when I photocopy I get a black line down the page check the drum unit maybe the drum or the cleaning blade is the problem