Brother HL 1440 Laser Printer "black line down front" Questions

...black, vertical lines printing along the right hand side of the paper? If the lines go all the way down the page, check the position of the corona wire cleaner tab (blue or green) at the top front of ...

...black spots on the paper. It doesn't do it all the time only when we have something that is Really Important. Thanks for any suggestions. Stray dots (on a vertical imaginary line on the page) may not ...

black spots are now appearing on the left margin. It's new printer, only six weeks old, so I don't think I need to replace the drum or cartridge yet, at least I hope not. What other remedies, short of

...down power up machine holding go button until only 3 lights are lit (about 15 seconds). Press go button 2 times. Wait (I forget what happens but wait about 20-30 seconds and it will have happened) ...

Black Lines running down the right side outside of the print area I had thin gray lines all over the print area, and the REPLACE COLOR PCU error code was lit. I replaced the COLOR PCU - No help but ...

...black line down the front right edge copies from originals ran through the adf come out with a black line done the right side about 2 inches from the right edge Click here and perform the steps to ...

line all 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

...cartridges and found the one creating the mark and cleaned it. no more line Hi Trfilteau, Print just magenta and you still the get yellow line? The yellow or black cartridge could be faulty. Rgds ...

...is banding down the sheet after a copies Need more info.... Is it pitch line accross the page the whole page or banding on the front or back side of the copies or is it black streaks down the

black lines and splotches down the left side of my paper. This happens whether I'm scanning or printing from my PC. When I looked at my drum, it appears a My Brother MFC-7420 Printer always prints