Brother MFC7820N I purchased this machine 6 months ago but seldom used. The counter shows only 276 pages in all both printing and copying. I just noticed a vertical line approximately 1/2 inch wide on the right side when I made a copy. I made about a dozen copies and all of them showing the vertical line about 1/2 inch wide. The problem started yesterday. There is no vertical line when you print something. Printing part is fine. How do you correct the problem? I would appreciate your help.

<span>Your printer does not print certain colors or does not print completely. Well, this is a common problem with people who purchase Brother printers, but do not always use Brother Ink Cartridges. Brother has a cleaning agent in the print cartridge and the compatibles do not.<br /><br />"If you have a lack of one (or more) color do the following:<br /><br />Make sure all carts are full, placed well and are secured. Insert a new ORIGINAL BROTHER CART for the one that shows no color.<br /><br />Press menu then start bk-copy then four times arrow up quick after another. machine will switch into maintenance mode and all lights will flash. Press 7 then 6 then 4 then start bk-copy. machine will initialize the carts and refresh ink within tubes and print head. After that it does some power cleaning. When finished press 7 then 6 then 3 then start bk-copy. machine will run a power purge. when finished press 9 then 9 to leave the maintenance mode. do run a quality test print.<br /><br />This should clean the lines out and clear up your issue.</span>