Why do I get a line of faint or no copying on the page?

if it is a white void check laser shield glass. toner might be on it causing this problem. There should be a wand in front door use to clean laser area make sure you do each color. hope this helps.

Try an old toner cartridge if you have one. Does it do it when you use the copier function. Steven 805-520-3003

You need to clean the scanner glass. Also known as the strip glass. It is a 1 inch wide strip of glass that runs from the front to the back. Your documents pass over this glass when they are scanned. Some of the wax crayon probably smeared off onto the glass and now when you scan the scanner sees these marks as stationary and thus records them as solid lines. Just look into the scanner section where your documents are fed in or depending on model, some are just to the left of the large original glass.
Good Luck and thank you for using Fixya.

Usually just toner dust on the laser lens, you remove the toner and drum and look on top inside for a window about 1/2 inch wide. You wipe that window with a dry cloth, and also check for paper scraps inside or on the drum assembly.

For this kind of problem you need to call the tech support because the printer is already messed up and it is in need of replacement

Hope this help

Byron

I dont know what kind of copier you have but white vertical lines are virtually always caused by a dirty charge corona.There is usually a little plastic handle, blue, green or grey, that cleans the charge corona.pull it out ONCE, push it back in and try another copy.If you have an operators manual, it should have instructions for cleaning the charge corona.Good Luck, O'scope

Open the document feeder and clean the scanner glass.

Either the light source is failing or you have a piece of paper stuck in the way of the LED's and the drum.  Check the paper path very carfully to make sure there is no dirt or debris in the paper path.

There must be a strip of glass about one inch wide, next to
the large glass. There is the problem !
Clean that strip thourougly. When you use the feeder the pages
are scanned thru the small strip of glass.

TYPICALLY SF900 FAX USES A DIFFERENT CIS SCANNER , THSI SORT OF INDICATION IS EITHER SMPS BAD OR CIS SCANNER BAD. HAPPY FAXING OMNIRESENT